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TEMPERATURE SENSORS WITH A STEM AND METAL CONNECTION HEAD

Description and application

TEMPERATURE SENSORS WITH A STEM AND METAL CONNECTION HEAD

These resistance-type temperature sensors are intended for contact temperature measurements of liquid or gaseous substances. The temperature sensor-central holder combination is suitable for temperature measurements in air condition ducts. The temperature sensor-thermowell combination is suitable for temperature measurements in tubing. The sensor variant with welded thread is ideal for direct measuring of mediums in ducts. The standard operating temperature range is -30 °C to 200 °C. By using a sensor with a longer stem the upper limit of allowable temperature can be extended up to 250 °C. The temperature sensors can be utilised for any control systems that are compatible with sensing element output signals or output signals quoted in the table of sensing element types.

The temperature sensors are designed to be operated in a chemically non-aggressive environment.

ACCESSORIES

DECLARATION, CERTIFICATION, CALIBRATION

  • Manufacturer provides EU Declaration of Conformity.
  • Calibration – The final metrological inspection – comparison with standards or working instruments – is carried out for all the products. Continuity of the standards and working measuring instruments is ensured within the meaning of the Section 5 of Act no.505/1990 on metrology. The manufacturer offers a possibility to supply the sensors calibrated in SENSIT s.r.o.’s laboratory (according to requirements of the EN ISO/IEC 17025 standard) or in an Accredited laboratory.  

 


  • Specifications
  • Wiring diagram
  • Dimensional draft
  • Download
Sensor type NK 120 NK 121 NK 122 NK 320 NK 321
Type of sensing element Ni 1000/5000 Ni 1000/6180 Ni 891 Ni 10000/5000 Ni 10000/6180
Measuring range -30 to 200 °C (connection head ambient temperature -30 to 100°C)
Maximum measuring DC current 1 mA 1 mA 1 mA 0.3 mA 0.3 mA

Sensor type NK 123 PTK 120 PTK 220 PTK 320 HK 120
Type of sensing element T1 = Ni 2226 Pt 100/3850 Pt 500/3850 Pt 1000/3850 thermistor NTC 20 kΩ
Measuring range -30 to 150 °C - 50 to 200 °c (connection head ambient temperature -30 to 100 °C) -30 to 150 °C
Maximum measuring DC current 0.7 mA 3 mA 1.5 mA 1 mA 10 mW *)

*) maximum power consumption

Sensor type NK 520 Note
Type of sensing element Pt 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
Error of the measurement < 0.6 % of the range no less than 0.5 °C
Power supply (U) 11 to 30 V DC recommended value 24 V DC
Load resistance 150 Ω for power supply 12 VDC
700 Ω for power supply 24 VDC
Output signal
-sensing element break
> 24 mA
Output signal
- sensing element short circuit
< 3.5 mA

OTHER PARAMETERS
Accuracy class Ni sensing elements: B class, Δt = ± (0.4 + 0.007t), for t ≥ 0; Δt = ± (0.4 + 0.028|t|), for t ≤ 0 in °C;
Pt sensing elements: B class according EN 60751, Δt = ± (0.3 + 0.005|t|) in °C
NTC 20 kΩ: ± 1 °C for the range 0 to 70 °C
Sensor connection according to the wiring diagram
Standard lenght of stem L1 70, 120, 180, 240, 300, 360, 420 mm
Time response τ0,5 < 9 s (in flowing water at 0.4 m.s-1)
Recommended wire cross section
-sensors with the grommet
0.35 to 1.5 mm2
Insulation resistance > 200 MΩ at 500 V DC, 25° ± 3 °C; humidity < 85 %
Ingress protection IP 54 in accordance with EN 60529
Material of the stem stainless steel DIN 1.4301
Type of connection head LIMATHERM MA
Material of connection head aluminium alloy
operating conditions ambient temperature:
-30 to 100 °C; -30 to 70 °C with a converter
relative humidity: max. 100 % (at the ambient temperature 25 °C)
atmospheric pressure: 70 to 107 kPa
Weight approximately 0.15 kg

Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your dealer.

Datasheet - TEMPERATURE SENSORS WITH A STEM
Datasheet - TEMPERATURE SENSORS WITH A STEMDatasheet - TEMPERATURE SENSORS WITH A STEM
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