Danfoss ETN Data sheet
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.
© Danfoss | Climate Solutions | 2021.03 AI201386422506en-000701 | 2
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