Data Sheet
Temperature sensor
Type ETN
NTC temperature sensors for ETC & ERC controllers
For commercial refrigeration applications
Danfoss has selected a programme of
temperature sensors to be used with the ETC
and ERC range of controllers.
NTC (Negative Temperature Coecient)
temperature sensors change resistance with
temperature in a manner compatible with the
controller software.
They are fully compliant with the tolerance
requirements according to IEC 60060-1.
Features:
• High accuracy in temperature measurement
and close tolerances ensure improved control
• Plastic/steel moulded sensor case
• Insulated connecting cable
• Various cable lengths available
• Supplied with rast 2.5 connectors
• Poka-yoke (mistake-proof) cable connection
to the controller
AI201386422506en-000701
Double insulated
Operating temperature range
-40 – 80 °C
Thermistor
Encapsulated in plastic housing
Connecting cable
PVC double insulated
Climatic category (IEC 60068-1)
40/80/56
Rated resistance at 0 °C
16330 Ω ±2% (±0.4 °C)
Rated resistance at 25 °C
5000 Ω
Insulation resistance
>1000 MΩ
Voltage proof
3750 V
Thermal time constant
Approx. 35 sec.
Typical applications
Air sensing, evaporator sensing, condenser sensing
Double insulated
Operating temperature range
-20 – 100 °C
Thermistor
Encapsulated in plastic housing
Connecting cable
Thermoplastic elastomer double insulated
Climatic category (IEC 60068-1)
40/80/56
Rated resistance at 0 °C
16330 Ω ±1% (±0.2 °C)
Rated resistance at 25 °C
5000 Ω
Insulation resistance
>100 MΩ
Voltage proof
3750 V
Thermal time constant
Approx. 8 sec.
Typical applications
Ice bank
FEP insulation
Operating temperature range
-40 – 200 °C
Thermistor
Encapsulated in stainless steel housing. AISI 305
Connecting cable
Silicone rubber cable
Degree of protection
IP67
Rated resistance at 0 °C
346,9 kΩ (tolerance at 0 °C ±2.2%)
Rated resistance at 25 °C
100,0 kΩ (tolerance at 25 °C ±1.0%)
Insulation resistance
>100 MΩ
Voltage proof
3750 V
Thermal time constant
Approx. 8 sec.
Typical applications
Heating application
Temperature sensor, type ETN
Product specication
Technical data
Table 1: PVC standard sensors
Table 2: TPE precision sensors
Table 3: NTC sensor for heating application
Connection diagram
Danfoss NTC temperature sensors are clearly marked for easy identication during the assembly process.
Colour coding on the cable close to the sensor element is used to dierentiate between cabinet, evaporator
(defrost) and condenser sensors even if the plug part of the cable is not visible.
For example, a sensor marked with two blue stripes as shown in Figure 2: Sensor with blue stripes is the evaporator
or defrost sensor.
There are also dierent connector types or codes at the plug end of the cable. Using a combination of rib cuts on
the connectors ensures correct connection position to the controller as shown in Figure 3: Connection position. This
is known as Poka-Yoke design.
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Figure 1: ERC 11x controller
Figure 2: Sensor with blue stripes
Sensor colour
coding
Figure 3: Connection position
ETC controller
Poka-yoke (mistake-proof)
cable connection to the controller
30
L
22
L
50
Temperature sensor, type ETN
Table 4: Connection diagram
Dimensions and Weights (SI units)
Figure 4: PVC standard sensor
Figure 5: TPE precision
Figure 6: Silicone rubber cable, NTC 100 K ohm
© Danfoss | Climate Solutions | 2021.03 AI201386422506en-000701 | 3
Sensor type
Length in mm
Connector
Colour marking
Code number
PVC standard (±0.4 °C) NTC 5 K
470
C1/S1
077F8751
1000
C1/S1
077F8757
1500
C1/S1
077F8761
2000
C1/S1
077F8765
2200
C1/S1
077F8767
3000
C1/S1
077F8769
3500
C1/S1
077F8723
6000
C1/S1
080G2019
1000
C2/S2
077F8786
1500
C2/S2
077F8790
2000
C2/S2
077F8794
3000
C2/S2
077F8798
6000
C2/S2
080G2029
1000
C3/S3
077F8756
1500
C3/S3
077F8760
3000
C3/S3
077F8768
TPE precision (±0.2 °C) NTC 5 K
1500
C1/S1
077F8726
Silicone rubber cable, NTC 100 K ohm
1000
S1/S3
080G2041
2000
S1/S3
080G2043
3000
S1/S3
080G2045
Temperature sensor, type ETN
Ordering
Table 5: Ordering for NTC temperature sensor
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