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Temperature sensor - Metal connection head

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  • Resistance temperature sensor.
  • Contact with liquid or gaseous substances.
  • Designed for air conditioning ducts.
  • Combination temperature sensor and thermowells.
  • Operates in a chemically non-aggressive environment.
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GNK120R Datasheet | Temperature sensor - Metal connection head

Product features Temperature sensor - Metal connection head

DESCRIPTION AND APPLICATION

These resistance temperature sensors are designed to measure the contact temperature of liquid or gaseous substances. The combination temperature sensor and central support is suitable for temperature measurements in air conditioning ducts. The temperature sensor and thermowell combination is suitable for temperature measurements in tubes.

La sensor variant with welded thread is ideal for the direct measurement of fluids in ducts. The standard operating temperature range is between -30°C and 200°C. By using a sensor with a longer stem, the upper permissible temperature limit can be extended up to 250°C.

Temperature sensors can be used for any compatible control system with the sensing element output signals or the output signals shown in the sensing element type table.

Temperature sensors are designed to operate in a chemically non-aggressive environment.

ACCESSORIES
  • central metal support K120
  • stainless steel thermowell JS 130
  • screw with collar or cutting rings - if different immersion lengths of the temperature sensor are set

DECLARATION, CERTIFICATION, CALIBRATION

  • The manufacturer provides an EU declaration of conformity.
  • Calibration - The final metrological control - comparison with standards or working instruments - is carried out for all products. The continuity of standards and work measurement instruments is ensured within the meaning of article 5 of Law No. 505/1990 on metrology. The manufacturer offers the possibility of supplying the calibrated sensors.
  • Features
  • Cable schematics
  • Dimensional draft
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Sensor type NK-120 NK-121 NK-122 320 NK NK-321
Sensitive element type Nor 1000/5000 Nor 1000/6180 Ni 891 Nor 10000/5000 Nor 10000/6180
Measuring range -30 to 200 ° C (ambient temperature of the connection head -30 to 100 ° C)
Maximum continuous current 1 mA 1 mA 1 mA 0.3 mA 0.3 mA

Sensor type NK-123 PTK120 PTK220 PTK320 HK-120
Sensitive element type T1 = Ni 2226 Point 100/3850 Point 500/3850 Point 1000/3850 20 kΩ NTC thermistor
Measuring range -30 to 150 ° C - 50 to 200 ° C (ambient temperature of the connection head -30 to 100 ° C) -30 to 150 ° C
Maximum continuous current 0.7 mA 3 mA 1.5 mA 1 mA 10 mW *)


*) maximum power consumption

Sensor type NK-520 Footnotes
Sensitive element type Point 1000/3850
Output signal 4 to 20 mA
Measuring ranges -50 to 50 ° C 
-30 to 60 ° C 
0 to 35 ° C 
0 to 100 ° C 
0 to 150 ° C 
0 to 200 ° C 
0 to 250 ° C
ambient temperature around the connection head -30 to 70 ° C
Measurement error <0.6% of range not less than 0.5 ° C
Power supply (U) 11 to 30 V DC recommended value 24 V DC
Load resistance 150 Ω for 12 VDC power supply 
700 Ω for 24 VDC power supply
Output signal 
breaking the sensitive element
> 24 mA
Output signal 
- short circuit of the detection element
<3.5 mA

OTHER PARAMETERS
Precision class Elements sensitive to Ni: class B, Δt = ± (0,4 + 0,007t), for t ≥ 0; Δt = ± (0,4 + 0,028 | t |), for t ≤ 0 in ° C; 
Elements sensitive to pt: class B according to EN 60751, Δt = ± (0,3 + 0,005 | t |) in ° C 
NTC 20 kΩ: ± 1 ° C for the range from 0 to 70 ° C
Sensor connection according to the wiring diagram
Standard length of rod L1 70, 120, 180, 240, 300, 360, 420 mm
Response time τ 0,5 <9 s (in white water at 0,4 ms -1 )
Recommended wire section - 
sensors with grommet
0,35 to 1,5 mm 2
Isolation resistance > 200 MOhm at 500 V DC, 25 ° ± 3 ° C; humidity <85%
Ingress protection IP 54 according to EN 60529
Material of the stem DIN 1.4301 stainless steel
Connection head type LIMATHERM MA
Connection head material aluminum alloy
operating conditions ambient temperature: 
-30 to 100 ° C; -30 to 70 ° C with converter 
relative humidity: max. 100% (at room temperature 25 ° C) 
atmospheric pressure: 70 to 107 kPa
Weight about 0,15 kg

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