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Omega DPGM409S 数字压力计说明书

DIGITAL PRESSURE GAUGE foR SANITARY/CLEAN-IN-PLACE APPLICATIoNSf a s t D e l i v e r y–T y p i c a l l y S t oc k t o1-W e e k!IP65 case.DPGM409S15-17.5BG shown smaller than actual size.SPECIFICATIONSRoHS CompliantCE Compliant: Meets industrial emissions and immunity standardIEC61326 for industrial locations Accuracy: ±0.08% Best StraightLine Typ. (Linearity, Hysteresis and Repeatability combined) Calibration: 5-Pt NIST traceable calibration with zero and span values, calibrated in horizontal direction (compound gauge models calibratedin positive direction only). calibrated in horizontal directionZero Balance: ±0.5% FS typical ±1% maximum (for ranges ≤170 mb ±1% Typical ±2% maximum)Span Setting: ±0.5% FS typical ±1% maximum (for ranges ≤170 mb ±1% Typical ±2% maximum)Storage/Operating Temperature Range: -15 to 115°C (-5 to 240°F) Compensated Temperature Range:R anges ≤350 mb: 4.4 to 60°C(40 to 140°F)Ranges >350 mb: -4 to 85°C(25 to 150°F)Zero and Span shift over Compensated Range:R anges ≤170 mb:Zero: 1.00% Span: 0.70%Range = 350 mb:Zero: 0.80% Span: 0.50%Ranges > 350 mb:Zero: 0.50% Span: 0.50%550 & 880HB Barometric Range: Zero: 0.90% Span: 0.50% Minimum Isolation Between Case and Output Terminations:100M Ω @ 50 VdcAnalog Output: User selectable 0 to5 Vdc, 0 to 10 Vdc of 4 to 20 mA (external 24 Vdc power required) Note: Compound gage ranges have a unidirectional analog output equal to their full span; i.e. -1 to +1 bar = 0 to 10 Vdc.Set Jumper to Select Current or Voltage: Software selection of 0 to 5 Vdc, 0 to 10 Vdc, or 4 to 20 mAAnalog Output Cable: 2.7 m (8.9') with ferrite core includedAnalog Output Accuracy: 0.08% typical (0.15% max in RF field @10V/m)Pressure Cycles: 250,000, minimum Long Term Stability (1-Year): ±0.1% FS Typical Fill Fluid: NEOBEE M5 Food GradeApproved to 3A SanitarySpecification 74-05Environmental Protection:NEMA 4X (IP65) depending uponelectrical terminationPressure Rating: 1½" and 2" Tri-Grip™fitting (compatible the Tri-Clamp®):40 bar using suitable clampOver Pressure: 4 x rated pressure tomaximum rated flange pressureSecondary Containment: 6 x ratedpressure to a maximum of 138 bar (notin clamp)Display: 4-digit LCD with userselectable backlighting, (9999 count)25 mm (1") character heightComputer Interface: UBS connectionfor set-up, cable includedSample/Display Range: Userselectable from 0.35 to 30 seconds(preset to 1/second)Power: One 3.6V lithium 8.4 Ahcapacity (C cell) Included (two includedwith wireless option) (replacementbattery model no. BATT-C-3.6VBattery Life (Typical): Up to 4-yearsEnclosure Material: 316 stainlessSteel and ABS center gasketEnclosure Finish: ElectropolishedEnclosure Environmental Rating:Weatherproof, NEMA 4X (IP65)Connection Location: Lower(head rotates to position display)Front Panel FunctionsBacklight: Manually turns backlighton/offMin/Max: Recalls min/max valuesZero/Clear: Zeros display or clearsmin/maxSoftware Settings (via USB)Update Rate: 4 options; 10, 5, 2, 1times per secondUnits: psi, inHg, inH2O, bar, mbarLock: Allows the lock-out of frontpanel functionsAlarms: User selectable High andLow alarm limits (open collector)Backlight: On/Off, 10 sec, 30 sec,1 min, 5 minWireless Transmitter (Optional):channel number, Transmission rate,alarms, sensor offset, chart recording,data loggingCalibrate: Zero and SpanOverrange Indication: "_ _ _ _"Wireless Option SpecificationsTransmit Sample Rate: Userprogrammable from 1 sample/2 minuteto 1 sample/2 secondsRadio Frequency (RF) TransceiverCarrier: ISM 2.4 GHzRF Output: 10 dBm (10 mW)Range of RF Link:O utdoors (Line of Sight):Up to 120 m (400')Indoors/Urban: Up to 40 m (130')Included Software: Requires Windows®7 (32 bit); XP, VistaData Transmission to Host: Pressurereading, ambient temperature reading,RF transmit strength and battery levelDimensions:D isplay: 115 D x 89 W x 74 mm H(4.5 x 3.5 x 2.9")S ensor: 72 to 89 mm L (2.8 to 3.5")below displayWeight: 900 g (2 lb) typical dependingupon configurationDPGM409S15-17.5BGshown smaller thanactual size.Exploded view showing。

Omega DPG110数字压力计说明书

DPG110DC Loop PoweredDigital Pressure GaugeIntroductionDPG110 is digital pressure gaugepowered by a seperate loop powersupply from 12 to 30VDC. It ismade for easy on-site installation.The DPG110 uses a high-precisionpiezo-resistive pressure sensor.The output signal is amplified by ahigh-precision, low-temperature driftamplifier. T he signal is then fed intoa high accuracy A/D converter for themicroprocessor to process and thenshow on the LED display.This flexible, simple to operatedigital pressure gauge is safe,reliable, and easy to debug. T heDPG110 is widely used in hydro-power, water, petroleum, chemical,mechanical, hydraulic, and otherindustries.Features• 4-20mA interface• 4-digit 0.56” LED display• Ceramic pressure sensor core• Digital Calibration• Anti-jamming design suitable forelectromagnetic and harsh industrialenvironments.• IP65 rated outlet port connectorSpecifications•Measuring Range 0- 20MPa •Overload Pressure150%~200%•Pressure Type A/G•Stability≤0.2% FS per year•Power Supply 12-30VDC•Display 4 digits LED•Accuracy Range ±0.25% for gauge pressure >5psi ±0.5% FS for all others including absolute, compound gauge, and Vacuum ranges •IP Rating IP65•Output 4-20mA Signal •Operating Temp -30ºC ~ 80ºC •Relative Humidity ≤90%•Thread Size 1/4 NPT •Thread Material SS316Dimensions Control Method Digital Pressure Gauge 24VDC Loop Power Supply Receiver ++--+-Operating Instructions •Wiring RED: +24VDC Black: Ground •Calibration Press ▼for 5 seconds for zero callibration.Press ▲ for 5 seconds for full scale calibration M5701/11181. Operation panel description:• The transmitter board provides a three-button and Led display man-machine interface to operate all transmitter Settings and calibration parameters.• Key functions are multiplexed. A down key is a shift key when the input data is shifted.2. Clear the zero deviation:• Given zero standard pressure, long press increase button for 10 seconds to calibrate full degree.• Given full standard pressure, hold down the reduce button for 10 seconds to calibrate zero.This operation is a shortcut provided to customers, generally not end users do not enter this function to prevent calibration data damage.3. Menu operation, as shown below:Calibration menu is the transmitter calibration way for factory calibration and general technical supervision department, general users do not enter the setting of any data, non-professionals modify any data may lead to the transmitter completelyunable to work.Circuit board through the panel of the three keys to achieve all the parameters input and calibration data Settings, collection. The circuit board on the meter setting and input to take a variety of optimization measures to improve customer operation speed:•The decrease key and increase key of the meter have variable speed function •For the menu that needs to be modified by a large number, the menu that needs to continuously input data adopts the shift mode, and the menu that needs to continuously input data adopts the incremental mode•The meter will stop analog output in the set state, so if the user does not operate the meter within 3 minutes, it will automatically exit to the measurement state•The shift input has a flashing prompt function•The full meter data will flash when it exceeds 120% of the normal setting display value. Less than 0.2% of the zero-setting value, the instrument displays the zero value, which can realize the zero-shielding function of the sensor •When the meter enters the factory password menu in the state of zero clearance, the zero-clearance value will be automatically cleared when the menu exits•The meter saves all settings only when it exits the menu normallyWARRANTY/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OM EGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OM EGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OM EGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER W ARRANTIES OR REPRESENTATIONS OF ANY KIND W HATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED W ARRANTIES INCLUDING ANY W ARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damagewhatsoever arising out of the use of the Product(s) in such a manner.RETURN REQUESTS / INQUIRIES Direct all warranty and repair requests/inquiries to the OM EGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOM ER SERVICE DEPARTM ENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:1. P urchase Order number under which the product was PURCHASED,2.M odel and serial number of the product under warranty, and3. R epair instructions and/or specific problems relative to the product.FOR NON-WARRANTY REPAIRS, consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA:1.Purchase Order number to cover the COST of the repair,2. Model and serial number of the product, and 3. R epair instructions and/or specific problems relative to the product.OM EGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering. OMEGA is a trademark of OMEGA ENGINEERING, INC.© Copyright 2018 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.WARNING : These products are not designed for use in, and should not be used for, human applications.Servicing North America:U.S.A. Omega Engineering, Inc. Headquarters: Toll-Free: 1-800-826-6342 (USA & Canada only) Customer Service: 1-800-622-2378 (USA & Canada only) Engineering Service: 1-800-872-9436 (USA & Canada only) Tel: (203) 359-1660 Fax: (203) 359-7700 e-mail:**************For Other Locations Visit /worldwide***********************。

OMEGA HHM599数字压力计说明书

OMEGAHHM599 Digital Trms Clamp-On MeterOMEGAnet On-Line Service Internet e-mail **************Servicing North America:USA: ISO 9001 Certified Canada:One Omega Drive, Box 4047976 Bergar Stamford, CT 06907-0047Laval (Quebec) H7L5A1 Tel: (203) 359-1660Tel: (514) 856-6928 FAX: (203)359-7700FAX: (514) 856-6886e-mail:**************e-mail:**************SAFETY INFORMATIONThe following safety information must be observed to insure maximum personal safety during the operation at this meter:1. Do not use the meter if the meter or test leads look damaged, or if you suspect that the meter is not operating properly.2. Use caution when working above 60V dc or 30V ac rms. Such voltages posea shock hazard.3. When Using the probes, keep your fingers behind the finger guards on the probes.4. Measuring voltage which exceeds the limits of the clampmeter may damage the meter and expose the operator to a shock hazard. Always recognize the meter voltage limits as stated on the front of the meter.5. If the equipment is used in a manner not specified by the manufacturer, the protection provided the equipment may be impaired.SPECIFICATIONSDisplay: 3¾ digit (4000 counts), 9999counts (Frequency mode), 40 segments analog bar graph and function units sign annunciators.Polarity: Automatic, positive implied, negative polarity indication. Overrange: "4000"or"-4000" Most Significant Digit blinks.Low battery indication: the "" is displayed when the battery voltage drops below the operating level.Measurement rate: 2/sec,nominal. 1/sec, Capacitance and Frequency mode. 20/sec, Analog display.Operating Environment: 0°C to 40°C at < 70% relative humidity.Storage Temperature: -20°C to 60°C, 0 to 80% R.H. with battery removed from meter.Accuracy: Stated accuracy at 23°C ± 5°C, <75% relative humidity. Safety: According to EN61010-1 protection class II overvoltage category (CAT III 600V) pollution degree 2.Auto Power off: 30minutes after rotary switch or mode changes.Clamp jaw: According to EN61010-2-032 CAT IV 600V.Power: single standard 9-volt battery.Battery life: 150 hours typical.Dimensions: 250mm (H) x 100mm (W) x 46mm (D).Weight: Approx. 380g including battery.Accessories: One pair test leads, 9V battery.DC VOLTSRanges: 400mV,4V,40V,400V,600VResolution: 100µVAccuracy:±(0.25%rdg + 1dgt) on 400mV to 400V ranges ±(0.25%rdg + 3dgts) on 600V rangeInput impedance: >10M WOverload protection: 600VDC or AC rmsAC VOLTS (True RMS) (50Hz-500Hz)Ranges: 4V,40V,400V,600VResolution: 1mVAccuracy:±(0.75%rdg + 4dgts) on 50-60Hz±(2.0%rdg + 4dgts) on 40-500HzInput impedance: >10M WEffect Reading: 100 - 3999Overload protection: 600VDC or 600VAC rms RESISTANCERanges: 400W,4K W,40K W,400K W,4000K W,40M W Accuracy:±(0.3%rdg + 5dgts) on 400W range±(0.3%rdg + 1dgt) on 4K W to 400K W ranges±(0.5%rdg + 1dgt) on 4000K W range±(2.0%rdg + 4dgts) on 40M W rangeOpen circuit volts: 0.4VdcOverload protection: 600VDC or AC rmsCONTINUITYAudible indication: less than 40W±20WOverload protection: 600VDC or AC rmsDIODE TESTTest current: 1.0mA±0.6mAAccuracy:±(3.0%rdg + 3dgts)Open circuit volts: 3.0Vdc typicalOverload protection: 600VDC or AC rms FREQUENCY (Autoranging)Ranges: 100Hz,1KHz,10KHz,100KHz,500KHz Resolution: 0.01HzAccuracy:±(0.1%rdg + 2dgts)Sensitivity: 2.0Vrms minEffect reading: 10-9999Overload protection: 600VDC or AC rms CAPACITANCERanges: 4nF,40nF,400nF,4µF,40µFAccuracy:±(3.0%rdg + 20dgts) on 4n Frange(use D ZERO)±(3.0%rdg + 4dgts) on 40nF to 20µF ranges±(6.0%rdg + 4dgts) above 20µFOverload protection: 600VDC or AC rmsDC CURRENT (Put conductor at the center of the jaws)Ranges: 400A,700AResolution: 100mAAccuracy:±(1.5%rdg + 5dgts)*700A to 1200A: ±(2.0%rdg + 5dgts)Overload protection: 1200Adc max. for 1 minuteAC CURRENT (True RMS) (40Hz-500Hz)(Put conductor at the center of the jaws)Ranges: 400A,700AResolution: 100mAAccuracy:±(1.75%rdg + 5dgts) on 50Hz-60Hz±(3.5%rdg + 5dgts) on 40Hz-500Hz*700A to 1000A(50Hz/60Hz): ±(2.5%rdg + 5dgts)Overload protection: 1000Aac max. for 1 minuteOPERATIONBefore taking any measurements, read the Safety Information Section. Always examine the instrument for damage, contamination (excessive dirt, grease, etc.) and defects. Examine the test leads for cracked or frayed insulation. If any abnormal conditions exist do not attempt to make any measurements.In the Data Hold mode, the "HOLD" annunciator is displayed and the last reading is held on the display, the beeper emits a tone. Pressing (MIN / MAX) button when you are in the Data Hold mode causes you to exit Data Hold and enter the MIN MAX Recording mode.In the MIN MAX Recording mode, press (HOLD) button to stop the recording of readings, press (HOLD) again to resume recording.PEAK HOLD Button: (only AC current ranges 40-60Hz)PEAK Hold mode, the "HOLD" annunciator is displayed. {Accuracy:MIN / MAX buttonPress (MIN / MAX) button to enter the MIN MAX Recording mode. The minimum, maximum values are then reset to the present input, the readings are stored in memory, and the "HOLD" annunciator turns on. Push the button to cycle through the minimum (MIN), maximum (MAX), and present readings. The MIN or MAX annunciator turns on to indicate what value is being displayed.In the MIN MAX Recording mode, press (HOLD) button to stop the recording of readings, press again to restart recording. If recording is stopped, the minimum, maximum, or present values and analog diaplay are frozen. In the MIN MAX Recording mode, when a new minimum value is exceed the actual minimum readings or a new maximum value is overload, the minimum or maximum value will held on the display, but the analog display continues to be active.AC current ranges without MIN/MAX function.D ZERO ButtonPress (D ZERO) button to enter the Relative mode, the "D ZERO" annunciator turn on, zero the display, and store the displayed reading as a reference value. Press and hold down the (D ZERO) button for 2 seconds to exit the relative mode.RANGE ButtonPress (RANGE) button to select the Manual Range mode and turn off the "AUTO" annunciator. (The meter remains in the range it was in when manual ranging was selected).In the Manual Range mode. each time you press (RANGE) button, the range (and the input range annunciator) increments, and a new value is displayed. To exit the Manual Range mode and return to autoranging, press and hold down (RANGE) button for 2 seconds. The "AUTO" annunciator turns back on. Voltage Measurements1. Connect the red test lead to the "V" jack and the black test lead to the "COM" jack.2. Set the Function/Range switch to the desired voltage range (AC or DC). The meter will automatically select the best voltage range.3. Connect the test leads to the device or circuit being measured.4. For dc, a (-) sign is displayed for negative polarity; positive polarity is implied. Current Measurements1. Set the Function/Range switch to the desired highest 700A range (AC or DC). In DC current measurement use D ZERO button, offset the residual magnetic of the jaws.2. Press the trigger to open transformer jaws and clamp onto one conductor only. Read the current directly on the display. It is recommended that the conductor be placed at the center of the closed jaws for maximum accuracy.3. When the reading is lower than 400 counts, set the range switch to the next lower range position. For maximum accuracy, select the lower range possible without overranging the meter.Resistance Measurements1. Set the Function/Range switch to the resistance range.2. Remove power from the equipment under test.3. Connect the red test lead to the " + " jack and the black test lead to the "COM" jack.4. Touch the probes to the test points. In ohms, the value indicated in the display is the measured value of resistance.WARNINGThe accuracy of the functions might be slightly affected, when exposed to a radiated electromagnetic field environment, eg, radio, telephone or similar.Continuity Measurements1. Set the Function/Range switch to the "" position.2. Remove power from the equipment under test.3. Connect the red test lead to the " + " jack and the black test lead to the "COM" jack.4. Touch the probes to the test points. the beeper sounds continuously, if the resistance is less than 40W.Diode Tests1. Connect the red test lead to the " + " jack and the black test lead to the "COM" jack.2. Set the Function/Range switch to the "" position.3. Turn off power to the circuit under test.4. Touch probes to the diode. A forward-voltage drop is about 0.6V (typical fora silicon diode).5. Reverse probes. If the diode is good, "4000" is displayed. If the diode is shorted, ".000" or another number is displayed.6. If the diode is open, "4000" is displayed in both directions.Frequency Measurements1. Set the Function/Range switch to the Hz position.2. Connect the red test lead to the " + " jack and the black test lead to the "COM" jack.3. Connect the test leads to the point of measurement and read the frequency from the display.Capacitance Measurements1. Set the Function/Range switch to the " " range.2. Connect the test leads to the " + " jack and the black test lead to the "COM" jack.3. Connect the red test lead to the capacitor and read the eapacitance dircetly from the display.MAINTENANCEWARNINGRemove test leads before changing batteryor performing any servicing.Battery ReplacementPower is supplied by a 9 volt "transistor" battery. (NEDA 1604, IEC 6F22). The "" appears on the LCD display when replacement is needed. To replace the battery, remove the two screws from the back of the meter and lift off the battery cover. Remove the battery from battery contacts.CleaningPeriodically wipe the case with a damp cloth and detergent, do not use abrasives or solvents.WARRANTY / DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA's customers receive maximum coverage on each product.If the unit should malfunction, it must be returned to the factory for evaluation. OMEGA's Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective it will be repaired or replaced at no charge. OMEGA's WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive corrosion; or current, heat moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA's control. Components which wear are not warranted, including but not limited to contact points, fuses, and triacs.OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a "Basic Component" under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER language, and additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.RETURN REQUESTS / INQUIRIESDirect all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBT AIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA'S CUSTOMER SERVICE DEP ARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:1.P.O. number under which the product was PURCHASED.2.Model and serial number of the product under warranty, and3.Repair instructions and/or specific problems relative to theproduct.FOR NON-WARRANTY REP AIRS, consult OMEGA for current repair charges. Have the following informationavailable BEFORE contacting OMEGA:1.P.O. number to cover the COST of the repair.2.Model and serial number of product , and3.Repair instructions and/or specific problems relative to theproduct.OMEGA's policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering. OMEGA is a registered trademark of OMEGA ENGINEERING, INC. © Copyright 1999 OMEGA ENGINEERING,Where Do I Find Everything I Need for Process Measurement and Control?OMEGA...Of Course!TEMPERATUREþThermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies þWire: Thermocouple, RTD & Thermistor þCalibrators & Ice Point ReferencesþRecorders, Controllers & Process Monitors þInfrared PyrometersPRESSURE/STRAIN AND FORCEþTransducers & Strain GaugesþLoad Cells & Pressure GaugesþDisplacement TransducersþInstrumentation & AccessoriesFLOW/LEVELþRotameters, Gas Mass Flowmeters& Flow ComputersþAir Velocity IndicatorsþTurbine/Paddlewheel SystemsþTotalizers & Batch ControllerspH/CONDUCTIVITYþpH Electrodes, Testers & AccessoriesþBenchtop/Laboratory MetersþControllers, Calibrators, Simulators& PumpsþIndustrial pH & Conductivity Equipment DATA ACQUISITIONþData Acquisition &Engineering SoftwareþCommunications-Based Acquisition SystemsþPlug-in Cards for Apple, IBM& CompatiblesþDatalogging SystemsþRecorders, Printers & Plotters HEATERSþHeating CableþCartridge & Strip HeatersþImmersion & Band HeatersþFlexible HeatersþLaboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL þMetering & Control Instrumentation þRefractometersþPumps & TubingþAir, Soil & Water MonitorsþIndustrial Water & Wastewater TreatmentþpH, Conductivity & Dissolved Oxygen Instruments。

OMEGA流量仪表产品说明书

Comes complete with operator’s manual. Other materials and lengths (up to 120") available. Consult OMEGA flow Engineering Department.For 230 Vac operation, add suffix “-230V” to model number, for additional cost. For 24 Vdc operation, add suffix “-24V” to model number, no additional cost. For 12 Vdc operation, add suffix “-12V” to model number, for additional cost.Ordering Examples: LVU-265S, 316 stainless steel, 2-wire, 4 to 20 mA output sensor,91.44 cm (36")�sensor immersion length. LVU-230S, 316 SS sensor with 10 A relay.K-34K LVU-230/260 Series U 1000:1 Wet-to-Dry Ratiowith 316 SS Machined Body SensorU E poxy Painted EnclosureU N o Calibration orSpecial Installation RequirementsU A C or 9 to 36 VdcPowered Models U Standard 3⁄4 NPT FittingsThe LVU-230 and LVU-260 liquid level switches are the ideal solution to a host of liquid-level sensing and control applications. Their small size and standard 3⁄4 NPT fittings make them suitable for new or existing applications. The LVU-230 models have a relay output along with a 316 SS or PVDF sensor and an integral miniaturized, encapsulated electronic control unit mounted in a cast aluminum, explosion-proof, watertight enclosure. The LVU-260 is a 2-wire, 4 or 20 mA output system.Both use an ultrasonic wave propagation sensor mounted in the liquid medium. The electronics generates a continuous wave ultrasonic signal that completely illuminates the liquid-sensing area. The absence of liquid in the sensing area causes the ultrasonic signal to dissipate, which the electronics senses as a “dry” condition (and provides a 4 mA output signal in the LVU-260). When liquid is present, the amplitude of the ultrasonic signal increases, indicating a “wet” condition. This signal is converted by the electronics and energizes the 10 A relay (LVU-230) or a 20 mA output signal (LVU-260). The LVU-230 electronics may be set to provide the control output to an alarm, pump, or other device on either a dry or wet condition.SPECIFICATIoNS Repeatability: 2 mm (0.08") typical Delay (on): 0.5 s Input Power: LVU-230: 115 Vac 50/60 Hz standard; 230 Vac 12 Vdc, or 24 Vdc (optional) LVU-260: 9 to 36 Vdc outputs: LVU-230: 10 A DPDT LVU-260: Low-level fail-safe: 4 ±1 mA dry; 20 ±1 mA wet; high level: 20 ±1 dry, 4 ±1 wet ¾ NPT THREAD Ultrasonic liqUid level switchesLVU-230S, shown smaller than actual size.Housing: NEMA 4/NEMA 7 watertight, explosion-proof enclosure, cast aluminum Class I, Group C and D, Class II, Groups E, F and G; and Class III, Division I and 2Sensor Material: L VU-230S, L VU-260S: 316 L SS L VU-230K, L VU-260K: PVDF Temperature: Sensor: -40 to 149°C (-40 to 300°F) Electronics: -29 to 77°C (-20 to 170°F)operating Pressure: Up to 1000 psig Mounting: 3⁄4 NPT standard Weight:453 g (1 lb)。

Omega DPG2001B数字压力计说明书

DIGITAL PRESSURE GAUGES WITh SELEcTAbLE EnGInEERInG UnITS AnD MEASUREMEnT MEMoRyDPG2001B-300G88888To OrderRANGE ABSOLUTE PRESSURE, VACUUM AND COMPOUND RANGES 15.00 to 0 psia 0 to 15.00 psiv ±15.00 psig 30.00 to 0 psia 100.0 to 0 psia -15.0 to 100.0 psig -15.0 to 200.0 psig GAUGE PRESSURE 0 to 3.000 psig 0 to 5.000 psig 0 to 15.00 psig 0 to 30.00 psig 0 to 60.00 psig 0 to 100.0 psig 0 to 200.0 psig 0 to 300.0 psig 0 to 500.0 psig 0 to 1000 psig 0 to 2000 psig 0 to 3000 psig 0 to 5000 psig OPTION S -BL DPG2004B-(range) -NIST DPG2001B-300G shown smaller than actual size with customerinstalled pipe fitting.NEMA 4X: ABS/Polycarbonate NEMA 4X case, rear gasket, polycarboinate labelPressure Connection: 1⁄4 NPT male fitting, 316L SS Media Compatibility: Liquids and gases compatible with 316L SSDimensions: 86 L x 73 H x 42 mm D (3.38 x 2.88 x 1.65")Weight: 250 g (8.8 oz)OPTIONSBacklighting: Add suffix “-BL” to standard battery powered model, add additional cost to priceNEMA 4X Case: Change model number to DPG2004, add additional cost to priceComes complete with operator’s manual and 2 “AA” batteries.* To order with optional backlighting add suffix “-BL” to model number and additional cost to the price; To order with optional 5-point NIST calibration “-NIST” to model number and additional cost to price.Ordering Examples: DPG2004B-15V15G, ±15 psig digital gauge in NEMA 4X case with selectable units and memory.DPG2001B-100G, 100 psig digital gauge in standard case with selectable units and memory.。

OMEGA 产品说明：温度、湿度、压力、流量和力仪器校准说明书

OMEGA constantly strives for new By maintaining these standards in-house, we can ensure fast turnaround.Our calibrations are always done by experienced technicians. Call OMEGA’s Customer Service department today to discuss your calibration needs:FAST AND DONE RIGHTT h e I n d u s tr y ’s B e s t -E q u i p p e d L a b s/omegacal for detailsCAL-1documents that the products you buy comply with the specifications printed in OMEGA’s handbooks. This calibrationCAL-2documents not only that theequipment you buy meets the published specification, but also that calibration CAL-3provides the same documentation as CAL-1/CAL-2 along with discrete test points of data and NIST-traceable testTemperature Calibration ServicesߜNIST TraceableߜAlways Meet or ExceedISO10012-1, ANSI/NCSLZ540-1-1994 StandardsߜFast Yet Preciseߜ5 Levels of Superior-Quality CalibrationߜOMEGA Will Calibratean Instrument or anEntire System (ProbeConnected to Instrument)For each of the calibration certificates OMEGA issues,we use different standards over varied temperatureranges to attain the highest quality and reliability.The standards we use for temperature calibrations arelisted in the table below; the standards that we selectfor a customer depend on the probe being calibrated.OMEGA meticulously maintains its in-house standardsso that our customers get the quickest, most convenient,and highest-quality calibrations available. For thosecustomers wishing to do their own calibrations, someof our standards are available for purchase. Visit/omegacal to learn more.For Calibration Services Call:OMEGA’s benchtop hot point®dry block probe calibrator modelCL900A ($3295) can be used to calibrate a handheld generalpurpose thermocouple probe and meter.Probe furnaces in OMEGA’s calibration laboratory are usedalong with NIST-traceable precision instrumentation to performtemperature calibrations renowned for their accuracy.Visit /temp-calfor details on ourcomplete line ofcalibration instruments.Calibration Block† Probe must meet requirements of calibration standards shown in table on previous page.* Prices are for new instruments and subject to change without notice. For recalibration, call Customer Service for price. Charges vary depending on the instrument being calibrated.Note: Because of the large selection of temperature probes, thermocouple wire andinstrumentation that OMEGA ®offers, the pricing and calibration data points shown above are examples only and do not apply to every probe or system calibration. Contact OMEGA Customer Service for advice before returning any instrument for calibration service.Ordering Example:CAL-3 (designate this calibration level when NIST traceability is required on the thermocouple probe or probe/instrument system you are purchasing new or when you are returning previously purchased equipment for calibration), $95 (probe only); $125 (probe with instrument).OMEGA can calibrate a probe by itself, an instrument by itself,or a probe connected to an instrument (system calibration). The pricing and temperature ranges listed below apply to most types of equipment; however, our product offering is so broad that you need to check with us for current pricing on a particular calibration. Be aware that there may be inherent limitations in a particular instrument that can restrict the temperature range over which it can be calibrated.Note:CAL-3 and CAL-4 also available on thermocouple wire. Upper temperature value may be limited by wire insulation.Note:CAL-3 calibration data is given in °C and °F.Visit /thermocouple for the complete selection of thermocouple probes available.Infrared Temperature Calibration ServicesߜAll Calibration Standards Used by OMEGA are NIST Traceable ߜChoose System orSensor-Only Calibrations—No Job is Too Small ߜ4 Calibration LevelsߜWide Temperature Ranges Covered—to 1648°C (3000°F) and Higher—When RequiredߜThe Industry’s Fastest,Most Reliable Blackbody CalibrationsNote: Because of the large selection of infrared pyrometers and blackbody calibration services that OMEGA offers, the pricing and calibration data points shown above are examples only and do not apply to every pyrometer or blackbody calibration. Contact OMEGA Customer Service before returning any instrument for calibration service.Ordering Example:CAL-3-IR (designate this calibration level when NIST traceability is required on the infrared pyrometer you are purchasing new or when you are returning previously purchased equipment for calibration), $125.BB-4A benchtop blackbody calibration source, $3595, below, shown calibrating as a system the OS1551-A infrared 4-wire transmitter, $690, and the DP41-B meter, $595.For Calibration Services Call:OMEGASCOPE $1195, with sighting scope,shown being calibrated using the OMEGA temperature blackbody calibration source, $9995.Visit to see our complete line of blackbody calibrators.OMEGA offers a complete range of infrared calibration services,performed by professionals with years of experience. As a company,our testing and calibration experience spans decades.OMEGA is an industry leader in temperature measurement and laser sighting technologies, with numerous patents and a global presence. Let our knowledge and technology work for you. Wemaintain an extensive line of high-temperature and low-temperatureblackbody calibration standards—all NIST traceable. Call our Customer Service department to arrange yournext infrared calibration.Relative HumidityCalibration ServicesCTXL-TRH, microprocessor-based,portable, temperature and relative humidity circular chart recorder,$795. See page S-38 for complete details.OMEGA’s highly accurate, temperature-compensated relative humidity calibration standards result in fast, stable, NIST-traceable calibrations. All work is performed by highly trained in-house technicians dedicated to superior-quality, economically priced service. We calibrate most of the relative humidity sensors, meters, controllers, recorders, data loggers, and data acquisition systems that we sell. Contact our Customer Service department to arrange calibration of your equipment.Note:Because of the large selection of relative humidity instrumentation OMEGA offers, the pricing and calibration data points shown above are examples only and do not apply to every relative humidity calibration. Contact OMEGA Customer Service before returning any instrument for calibration service.Ordering Example:CAL-3-HU (designate this calibration level when NIST traceability is required on the relative humidity instrument you are purchasing new or when you are returning previously purchased equipment for calibration), $125.NIST-traceable temperature/humidity chamber calibrates thermo-hygrometers and temperature and humidity products.ߜAccurate, Stable,Temperature-Compensated StandardsߜTraceable to NIST ߜExpert Technical Staff ߜFast, Economical ServicePressure Calibration ServicesNote:Because of the large selection of load cells and pressure instrumentation OMEGA/OMEGADYNE offers, the pricing and calibration data points shown above are only an example anddo not apply to every pressure calibration. Contact OMEGADYNE (1-800-USA-DYNE) or OMEGACustomer Service (1-800-622-BEST) before returning any instrument for calibration service.Ordering Example: EI-CAL-3-PRESSURE(designate this calibration level when NISTtraceability is required on the pressure transducer or when you are returning previouslypurchased equipment for calibration), $150.(Specify Calibration Level)Price Description$0Statement of conformance(must be requested at time of purchase)0Statement of traceability, no data points(must be requested at time of purchase) ߜNIST-Traceable StandardsߜSensor Calibration, Meter Calibration,and System Calibrations AvailableߜFast, Accurate Service by HighlyExperienced Engineering andTechnical StaffOMEGA/OMEGADYNE maintains highly accurateprimary deadweight standards that are NIST traceable.These standards are used directly or throughsecondary transfer standards for pressure calibrationsfrom vacuum to 75,000 psi. OMEGA/OMEGADYNEalso offers a wide selection of pressure sensors.Please consult your sales representative.NIST-traceablelow-pressure andForce/Load Calibration ServicesProvided by OMEGADYNEOMEGADYNE, located in Columbus, Ohio, maintainsin-house state-of-the-art NIST-traceable calibration standards for all your load cell calibration needs. Pictured above is ahigh-capacity deadweight tester (left) and hydraulic tester (right).“S” type load cell shown with DP41-S pressure indicator, $545.ߜNIST -Traceable Calibrations: 5, 11, and 21-Point Available ߜReliable, Accurate Certificates ߜSensor, Meter, and System Calibration Available: Tension,Compression, or BothߜHigh-Capacity Deadweight and Hydraulic Testers to 300,000 lbFor Calibration Services Call:orNote:Because of the large selection of load cells and pressure instrumentation OMEGADYNE and OMEGA offer, the pricing and calibration data points shown above are only an example and do notapply to every calibration. Contact OMEGADYNE (1-800-USA-DYNE)or OMEGA Customer Service (1-800-622-BEST) before returning anyinstrument for calibration service.Ordering Example:EI-CAL-3-FORCE(designate this calibrationlevel when NIST traceability is required on the load cell or when you are returning previously purchased equipment for calibration),$150.ߜFast Turnaround TimesNote: Because of the large selection of flow sensors, meters and instrumentation OMEGA offers, the pricing and calibration data points shown above are only an example and do not apply to every flow calibration. Contact OMEGA Customer Service before returning any instrument for calibration service.Ordering Example:CAL-3-FLOW (designate this calibration level when NIST traceability is required on the flow sensor or instrumentation when you are returning previously purchased equipment for recalibration), $225. Note: To request NIST-traceable calibration on new flow products, add suffix “-NIST”to the model number at time of purchase.OMEGA maintains a full line of standards for calibrating hot-wire anemometers and large vane-style handheld units. Pictured at the top right is our large wind tunnel,which is fully equipped with chillers,pumps, and condensers to keep therecirculating air at a constant temperature and flow ratewhile achieving flow rates from 25 to 9000 AFPM. This largewind tunnel is used for anemometer and vane-type sensor calibration.HHF141A microprocessor-based handheld air velocity meter, comes complete with 25 mm (1") dia. vane probe, flexible,straight and handle extension rods,1.5 m (5') cable, 3 “AA” alkaline batteries,hard carrying case and operator’s manual,$795. Visit /hhf141for details.with 25 mm (1") dia.vane (included).WTM-1000, OMEGA’s benchtop mini wind tunnel, $2995, shown with Flow Calibration Services。

omega美国PX309_CH系列

全不锈钢传感器PX319-100GVPX329-100GVPX309-100GV.电缆型。

微型扭锁式。

坚固耐用的通用传感器通用规格订购一个缓冲器保护您的压力传，图片为实际尺寸。

规格OMEGA 的PX309系列量程低于100 psi 的型号使用高精度硅传感器，该传感器受充油不锈钢膜片的保护。

100 psi 及以上量程装置使用以分子状固定在不锈钢膜片上的硅应变片。

长期稳定性（1年）: ±0.25%（常规）常规寿命: 一千万次（常规）工作温度: -40 ~ 85°C (-40 ~ 185°F)耐受压力:全psia 及≤50 psig 量程:容量的3倍或20 psi ，以较大值为准 100 psig 量程: 容量的2倍破裂压力: 容量的500%或25 psi ，以较大值为准响应时间: <1 ms冲击： 50 g, 11 ms 半正弦波冲击振动: ±20 g 保护等级: IP 65接液部件:全psia 及1 ~ 50 psig 量程为316不锈钢； 100 ~ 10,000 psig 量程为17-4 PH 不锈钢压力端口: 1⁄4-18 MNPT 电气连接:PX309: 1.5 m (5') 2芯、3芯或4芯电缆（分别为mA 、5V 及 mV 输出） PX319: 微型DIN 连接器（含对接连接器）P X329: 扭锁式连接器，导气对接连接器单独销售(PT06V-10-6S) PX359: M12，4针连接器重量:PX309: 154 g (5.4 oz)PX319、PX329、PX359: 100 g (3.5 oz)100 mV 输出激励:0 ~ 50 psig 及全psia 量程:10 Vdc (比率式)，(5 ~ 12 Vdc 范围内) 100 ~ 10,000 psig 量程:5 Vdc (ratiometric), (3 ~ 10 Vdc limits)输出: 0 ~ 100 mV ，例外情况2 psi = 40 mV ，1 psi = 20 mV精度: 25ºC 温度下为 ±0.25% FS BSL （包括线性度、滞后性及重复性）零点偏移: ±2% FSO ；对1和2 psi 量程为±4%跨距设置: ±2% FSO ；对1和2 psi 量程为±4%补偿温度: 0 ~ 50°C （32 ~ 122°F ）归零和跨距校正热效应（在补偿范围内）:15 ~ 10,000 psi 量程: ±2% FSO 5 psi 量程: ±3% FSO 2 psi 量程: ±4% FSO 1 psi 量程: ±5% FSO5V 输出激励: 9 ~ 30 Vdc（反向极性和过压保护）输出: 0 ~ 5 Vdc 或 4 ~ 20 mA5 ~ 10,000 psi 的静态精度: 25ºC 温度下为±0.25% FS BSL （包括线性度、滞后性及重复性）零点偏移: ±2% FSO; 对1和2 psi 量程为±4%跨距设置: ±2% FSO; 对1和2 psi 量程为±4% 补偿温度:>5 psi 量程: -20 ~ 85°C (-4 ~ 185°F) ≤5 psi 量程: 0 ~ 50°C (32 ~ 122°F)总误差范围: ±2% FSO ；包括线性度、滞后性、重复性、热滞后及热误差（例外情况：2 psi = ±3%，1 psi = ±4.5%）0-10,000 psi0-690 bar微型DIN式。

OMEGA DPGM409数字压力表产品说明书

背光超高精度数字压力表不锈钢接液部件和壳体快速交付一般只需2周！标配模拟输出，可选配无线变送器标准一体式压力传感器。

磁针（随附）。

NEMA 4X 等级外壳。

DPG409-500G ，图片小于实际尺寸。

规格CE 合规性: 当使用3 m (98')的模拟输出电缆和随附的铁氧体磁心时，符合EN1326-1:2006关于工业场所的规定精度（综合线性度、滞后性和重复性） : ±0.08% BSL （复合压仅可正向校准）温度:储存温度: -40 ～ 82°C (-40 ～180°F) 工作温度: -18 ～ 66°C (0 ～ 150°F)热效应（在工作范围内） : 零点平衡: 范围 >5 psi: 量程的±0.3% 范围 ≤5 psi: 量程的±0.5% 量程设置: 范围 >5 psi: 量程的±0.3% 范围 ≤5 psi: 量程的±0.5%传感器壳体与任何电缆之间的最小电阻: 100M Ω @ 50 Vdc 压力循环: 至少100万次长期稳定性（1 年）: 通常为满量程的±0.1% 模拟输出: 用户可选0 ~ 5 Vdc 、 0 ~ 10 Vdc 或4 ~ 20 mA （需要外部24 Vdc 电源）注: 复合压力范围具有等于其满量程的单向模拟输出，即-15 ~ +15 psi = 0 ~ 10 Vdc 。

设置跳线可选择电流或电压软件选择 0 ～ 5 Vdc 、0 ～ 10 Vdc 或4 ～ 20 mA模拟输出电缆: 2.7 m (8.9')，带铁氧体磁心精度: 通常为0.08%（10V/m 射频场中最大0.15%）过压力: 表压和密封压10 inH 2O: 10倍量程1 psi: 6倍量程2.5 ~ 3500 psi:4倍量程 5000 psi:最大15,000 psi绝对压力/大气压范围 5 psia: 6倍量程，范围 >5 psia ， 4倍量程 5000 psi 范围: 达15,000 psia 围阻压力: 表压 10 inH 2O ~ 5 psi: 达1000 psi 15 ~ 1000 psi: 达3000 psi 1500 ~ 5000 psi: 达15,000 psi绝对压力／大气压:5 ~ 1000 psi ：达6000 psia显示屏: 4位数字LCD ，用户可选背光，（9999计数）25 mm (1")字符高度计算机接口: 用于设置的USB 连接，含电缆采样/显示范围: 用户可选0.38 ~ 30 sec （预设为1/sec ）电源: 含一节3.6V 8.4 Ah 锂电池（C 电池）（对于无线选件，则提供两枚）（备用电池零件号 BA TT -C-3.6V ）电池寿命（常规）: 可达4年外壳: 材质: 316不锈钢和ABS 中心垫圈表面处理: 电镀环境等级:防水，NEMA 4X (IP65)传感器接液部件: 316L 不锈钢压力连接口: 1⁄4-18 NPT 外螺纹连接位置: 下部外形尺寸: 显示屏: 115（高） x 89（宽） x 74 mm （厚）(4.5 x 3.5 x 2.9") 传感器: 显示屏下方 72 ~ 89 mm 长 (2.8 x 3.5")重量: 900 g (2 lb)典型，取决于配置前面板功能背光: 手动开／关背光最小／最大值: 调用最小／最大值归零／清除: 归零显示或清除最小／最大值软件设置（通过USB ）更新速率: 4个选项：每秒10、 5、 2或1次单位: psi 、inHg 、inH 2O 、bar 、mbar 、hPa 锁定: 允许锁定前面板功能报警: 用户可选“上限”和“下限”报警限值（开路集电极）背光: 开／关、10 sec 、30 sec 、 1 min 、5 min无线变送器（可选）: 通道编号、传输速度、报警、传感器偏移、图表记录、数据记录校准: 归零和量程超出范围指示: “_ _ _ _”无线选件规格传输采样率: 用户可编程：从1个采样/2分到1个采样/2 秒射频(RF)收发器载波: ISM 2.4 GHz射频输出: 10 dBm (10 mW)射频链路范围: 室外（视线内）: 最远120 m (400')室内／市区: 最远40 m (130') 随附的软件: 需要Windows ® 7（32位)；XP 或Vista传输到主机的数据: 压力读数、环境温度读数、射频传输强度及电池电量水平新的安全功能使用磁针（内含）激活键盘。

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压力表压力表和压力开关压力表和压力开关是工厂中最常用的仪器。

然而，由于为数众多，维护和可靠性经常会被忽视。

从而，在老旧厂区见到大量无法使用的压力表和压力开关就不足为奇。

这种情况非常危险，因为如果压力开关失灵，工厂的安全就得不到保障。

反之，如果压力表损坏时工厂依然能安全运转，则说明该仪表毫无使用的必要。

因此，良好的过程仪表设计的首要目标便是，以较少的压力表和压力开关获得较好的作用和可靠性。

减少工厂中仪表数量的一种有效方法是，不再按照原有的陋习进行安装（例如在每个泵的出口都安装一块压力表）。

而是逐个核对每个设备的需要。

在核对过程中，我们应该思考以下问题：“这个压力表的读数对我有什么用处？”，只有在得到合理的答案时，才需要安装压力表。

如果压力表只是用来指示泵是否正在运转，就没必要安装，因为无需仪器即可做出判断。

如果压力表指示的是过程控制中的压力（或压降），则只有当我们能对结果采取相应措施（例如清洁滤清器）时这些信息才有意义，否则就毫无用处。

如果以上述原则来使用压力表，所用的压力表数量就会大幅减少。

如果工厂使用的压力表少而精，可靠性也会随之升高。

压力表设计压力表（和开关）损坏的两个常见原因是管道振动和水气凝结，在寒冷天气下会冻结和损坏仪表外壳。

图1 所示为传统压力表和更可靠的“充液式”压力表。

传统压力表的专用连杆、枢轴和小齿轮对水气凝结和振动都十分敏感。

充液式压力表的使用寿命会更长，不只是因为它的移动部件较少，还因为它的外壳充满了粘稠的机油。

充油带来的好处不仅有指针减振，还可以阻止周围环境中的潮湿空气进入仪表。

如此一来，水气就无法凝结和积聚。

仪表的特性还包括可以提高可见度的表盘照明和数字读数，能够纠正环境温度变化误差的温度补偿功能，用于测量压差的压差表以及在同一表盘指示两个压力读数的双针表。

压力表根据精度可以分为4A 级（允许误差为满量程的0.1%）到D 级（误差为5%）。

防护配件压力表最主要的配件是仪表与工业过程之间的截流阀（图5-2），截流阀在仪表拆卸或维护时起到拦截作用。

此外经常还会出于以下两个原因而加装辅助阀：在蒸汽（例如水蒸气）中使用时排出冷凝水，或是在高精度应用中对外部压力源进行校准。

其它配件还包括盘管或虹吸管（图 5-2A），它们可以保护仪表在蒸汽中使用时免于高温损坏；以及缓冲器或脉动缓冲器（图 5-2B），它们可以吸收压力冲击并平衡压力波动。

如果需要冻结保护，应使用蒸汽或电伴热对仪表进行加热。

化学密封（图 5-2C）可避免仪表在粘稠浆液中使用时发生堵塞，并防止腐蚀性、有害或有毒物质接触传感器。

它们可以防止过程液体在传感器末端空腔中发生冻结或胶凝。

密封通过工业过程和仪表之间的一层隔膜来保护仪表。

仪表和隔膜之间的空腔中充满了稳定、热膨胀系数低、粘性低且无腐蚀性的液体。

在高温应用中通常使用钠钾共晶合金，在室温下使用甘油和水的混合液，在低温下则使用乙醇、甲苯或硅油。

如果化学密封通过毛细管与压力表相连，便可将压力表放置到操作员视野更好的位置。

为了保持精度，毛细管不能暴露在过高温度下，长度也不能超过 25 英尺（7.5 米）。

有四种化学密封方式：离线式、“流通”自洁式、密封件探入式或法兰连接式。

化学密封中隔膜的弹簧刚度可能导致在低压（低于 50 psig ，350 kPa ）和真空环境（溶解在填充液体中的气泡可能从溶液中析出）下检测时出现测量错误。

因此，这类应用中的密封应优先选用压力中继器。

我们提供的压力中继器的量程精度范围为 0.1% 到 1%，绝对压力范围为 0-5 mm Hg 到 0-50 psia （0-0.7 到 0-350 kPa ）。

商业级压力表OMEGA® 商业级压力表系列卓越的可靠性主要源于独特的 OMEGA® 弹簧悬挂机芯。

整个机芯悬挂在两个弹簧之间，上方是波登管，下方是连杆。

已尽可能减少了易损零件的使用。

此外，这些机芯零件经过超声波清洗，并经过硅油润滑，确保了较长的使用寿命。

OMEGA® 弹簧悬挂机芯能够承受较大的冲击、脉动和振动，从而延长了仪表的使用寿命。

OMEGA® 商业级仪表应用广泛，可以安装在泵、便携式压缩机、工业机械、液压和气动系统、仪器和压力容器上。

对用户而言，这意味着更高的耐机械冲击性和抗振性。

这有助于提高对粗暴使用的耐受性，从而延长仪表寿命。

通用可充液压力表OMEGA 的 PGUF 系列通用可充液压力表适用于各种泵、压缩机、液压系统、机床和石油化工加工设备。

对于高冲击和振动应用，PGUF 可以进行现场充液，以降低仪表指针运动幅度。

PGUF 系列可充液压力表提供的量程包括 (PSI/BAR) 0-30/2、60/4、100/7、160/11、300/20、600/40 和 1000/70 (63 mm (21.2") 压力表还提供 2000/140 和 3000/200 两种量程）。

额定精度为量程的 ± 2.5%。

压力表配有耐腐蚀的 304 不锈钢外壳及表圈和耐用的聚碳酸酯面板。

标配磷青铜波登管和黄铜机芯、插座以及 NPT 接头。

PGUF 压力表提供的尺寸有 38 mm (11.2")、50 mm (2") 和 63 mm (21.2")，配有背面中心或下部安装式 NPT 接头。

通用压力表始终如一的精度和出色的可读性是 OMEGA® 通用压力表系列的重要用户特性。

通用压力表满足许多工业应用的要求，应用范围包括蒸汽锅炉或其它压力容器，泵和压缩机，多种工业机械，化工、石化和相关过程行业，电厂、纸浆厂和造纸厂等。

OMEGA® 通用压力表产品系列中的压力表驱动系统是经过精心设计的标准 316 SS 波登管系统，该系统具有精密的容差，能够实现一致的可重复性并对压力波动作出响应。

警告：选择所有压力表部件时，都应注意将暴露于其中的介质和周围的工作条件，以避免误用。

错误使用会损坏仪表、造成故障，并可能导致人身伤害或财产损失。

不锈钢工业级压力表OMEGA 的 PGM 系列压力表适用于各种腐蚀性环境，包括化学、石油化学、炼油、电力、船舶、食品和医药加工应用等。

PGM 系列配备 63 mm (21.2") 或 100 mm (4") 外壳，该外壳采用全不锈钢结构，环境防护等级为 IP65。

PGM 系列还可以进行现场充液。

在某些特定应用种，充液压力表可以为用户带来诸多便利。

它们非常适合在泵、压缩机和机床等振动和脉动过大的设备中使用。

充液可以最大程度地减小此类恶劣环境的影响，保护仪表内部并为机构提供持续润滑，这些都有助于延长使用寿命。

充液可以更好地保护仪表内部免受腐蚀气体影响。

仪表可以充注多种液体，包括甘油、矿物油和硅油等。

工业过程压力表这些压力表采用了工厂车间内中非常常见的样式。

世界范围内安装了成千上万台这种压力表来监控过程压力。

这种压力表可在真空中使用，量程高达 20,000 psi (1380 bar)。

密封条可以提供更好的保护并带来更高的效率。

T 型：高精度，采用蒙乃尔合金接液部件高精度仪表适用于仪表车间、所有类型的工厂和各个行业的实验室。

多数型号可提供高达0.25% 满量程的持久精度。

高性能、高可靠性和精密测量，再加上一致的精度，可以满足众多测试仪表应用严格的使用需求。

这类仪表通常在试验台测量中用作主参考仪表，用于检查生产和验证通用压力表的精度。

它们配有能够反射指针的不锈钢镜面表圈，可有效避免视差误差。

镜面可以反射处于任何位置的指针，能够提高仪表读数的精度。

差压压力表差压压力表是耐用的工业级仪表，用于指示两个输入连接之间的差异。

在一个输入的压力始终高于另一个输入的应用中，差压压力表可提供最高的精度。

在一个输入可能高于也可能低于另一个输入的情况下，可以使用双向差压量程。

OMEGA PGD 系列由两根独立的波登管构成。

相对的两根波登管与一个小齿轮相连，这个小齿轮可驱使指针转动来指示压力读数。

通过两根独立的波登管，该压力表可对任一端或同时对两端的液体或气体进行测量。