AKS21

Data sheet

Temperature sensors type AKS and ESM

Introduction

Temperature sensors AKS and ESM are temperature dependent resistance sensors.The sensor unit consists of a platinum element the resistance value of which

changes proportionally with the temperature.Except for one type of

PT 500 ohm sensor all sensors are Pt 1000ohm units.

The sensors are offered in two series:1.AKS 2.ESM

Sensors in the AKS series are mainly for commercial and industrial refrigeration plant use where the requirements on grade of enclosure and temperature range are high.Sensors in the ESM series are mainly for use in air conditioning and comfort applications where the design of the sensor housing is important.

The sensors are adjusted and meet the tolerance requirements of DIN IEC 751class B.

Technical data

Type Sensor / sensor body

Connection / cable Enclosure

Time constant t in seconds

AKS 11Top part:PPO (Noryl)PVC-kabel, 3 1)IP 67

10 2)AKS 15Bottom:

Stainless steel

2 ′ 0.2 mm 235 3)AKS 21A

Fire-resistive

6 1)

18/8 stainless steel tube

silicone rubber cable IP 6714 2)AKS 21M

2 ′ 0.2 mm 235 3)

Sensor pocket: 18/8 stainless steel tube Fire-resistive Weld nipple:

Free cutting steel

silicone rubber cable AKS 21W

Thread nipple:Free cutting steel 2 ′ 0.2 mm 2IP 5618 1)

Top part:

18/8 - 18/12 stainless steel

Terminal box Terminal box:Aluminium - brass AKS 21D 18/8 stainless steel tube Terminal box IP 5650 3)ESMT Cover:ABS-plastic Terminal box IP 43400 3)Bottom:PC (polycarbonate)ESMA Cover:PBTB (polyester)Terminal box IP 44 3 2)Bottom:PA (polyamide)ESMU Pocket:Copper DIN 43650IP 65 2 1)ESMR

Cover:ABS-plastic Terminal box

IP 32

50 3)

Bottom:

PA (polyamide)

1) Agitated liquid.2

) Clamped to pipe.3

) Air 4 m/s.

Data sheet Temperature sensors, type AKS and ESM

°C ohm°C ohm 01000.01000.0 11003.9-1996.1 21007.8-2992.2 31011.7-3988.3 41015.6-4984.4 51019.5-5 980.4 61023.4-6976.5 71027.3-7 972.6 81031.2-8968.7 91035.1-9964.8 101039.0-10960.9 111042.9-11956.9 121046.8-12953.0 131050.7-13949.1 141054.6-14945.2 151058.5-15941.2 161062.4-16937.3 171066.3-17933.4 181070.2-18929.5 191074.0-19925.5 201077.9-20921.6 211081.8-21917.7 221085.7-22913.7 231089.6-23909.8 241093.5-24905.9 251097.3-25901.9 261101.2-26898.0 271105.1-27894.0 281109.0-28890.1 291112.8-29886.2 301167.7-30882.2 311120.6-31878.3 321124.5-32874.3 331128.3-33870.4 341132.2-34866.4 351136.1-35862.5 361139.9-36858.5 371143.8-37854.6 381147.7-38850.6 391151.5-39 846.7 401155.4-40842.7 411159.3-41838.8 421163.1-42835.0 431167.0-43830.8 441170.8-44826.9 451174.7-45822.9 461178.5-46818.9 471182.4-47815.0 481186.3-48811.0 491190.1-49807.0 501194.0-50803.1°C ohm°C ohm 0500.00500.0 1502.9-1498.1 2503.9-2496.1 3505.9-3494.2 4507.8-4492.2 5509.8-5490.2 6511.7-6488.3 7513.7-7 486.3 8515.6-8484.4 9517.6-9482.4 10519.5-10480.5 11521.5-11478.5 12523.4-12476.5 13525.4-13474.6 14527.3-14472.6 15529.3-15470.6 16531.2-16468.7 17533.2-17466.7 18535.1-18464.8 19537.0-19462.8 20539.0-20460.8 21540.9-21458.9 22542.9-22456.9 23544.8-23454.9 24546.8-24453.0 25548.7-25451.0 26550.6-26449.0 27552.6-27447.0 28554.5-28445.1 29556.4-29443.1 30558.4-30441.1 31560.3-31439.2 32562.3-32437.2 33564.2-33435.2 34566.1-34433.2 35568.1-35431.3 36570.0-36429.3 37571.9-37427.3 38573.9-38425.3 39575.8-39 423.4 40577.6-40421.4 41579.7-41419.4 42581.6-42417.5 43583.5-43415.4 44585.4-44413.5 45587.4-45411.5 46589.3-46409.5 47591.2-47407.5 48593.2-48405.5 49595.1-49403.5 50597.0-50401.6

Resistance values, Pt 1000 ohm Resistance values, Pt 500 ohm Technical data

Extension of sensor cables

When extending a sensor cable, the new resistance value of the longer cable may give rise to indication error.

It is recommended that the total cable resistance should not exceed 2 ohm corresponding to an indication error of 0.5°C (Pt 1000 ohm).Typical resistance values for cables

-2,4 ohm/100 m for core cross-sectional area of 0.75 mm2.

-1,2 ohm/100 m for core cross-sectional area of 1.50 mm2.

-0,7 ohm/100 m for core cross-sectional area of 2.50 mm2.

Data sheet Temperature sensors, type AKS and ESM Ordering

Symbol Type Description Temperature Cable

Code no.

range length

°C m

3,5084N0003

AKS 11Surface and duct sensor-50 to +100 5.5084N0005

8.5084N0008

AKS 15 1)Surface and duct sensor-50 to +100 3.5084N0023

Surface sensor-70 to +180 2.5084N2007

with clip 5.0084N2008 AKS 21A Surface sensor

with screened cable-70 to +180 2.0084N2024

and clip

AKS 21M Multipurpose sensor-70 to +180 2.5084N2003

Immersion sensor

with cable and sensor-70 to +180 2.5084N2017

pocket, weld version

AKS 21W

Immersion sensor with

terminal box and sensor-70 to +180084N2016

pocket for weld version

1) Pt 500 ohm

Data sheet Temperature sensors, type AKS and ESM

Dimensions and weights (continued)

Data sheet Temperature sensors, type AKS and ESM

Data sheet Temperature sensors, type AKS and ESM