Contact Temperature Sensors with a Plastic Connection Head

These resistance-type sensors are intended for contact surface temperature measurement. The sensors, which are available including the fastening strap and a closing device are suitable for temperature measurements on piping. The plastic connection head is provided with a cable outlet ending (the terminal board is placed in the connection head) or a connector. the standard operating temperature range is -50 to 130 °C. The proper sensing element is constructed to be isolated from the ambient influence. The 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. Easy mounting of the temperature sensor is ensured by the unique “S head” design invented by SENSIT s.r.o.

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

Specification

Sensor type
(K - with connector)		 Type of sensing element Maximum measuring DC current Measuring range
NS 140
NS 140K		 Ni 1000/5000 1 mA -50 to 130 °C (connection head ambient temperature -30 to 100°C)
NS 141
NS 141K		 Ni 1000/6180 1 mA
NS 142
NS 142K		 Ni 891 1 mA
NS 340
NS 340K		 Ni 10000/5000 0,3 mA
NS 341
NS 341K		 Ni 10000/6180 0,3 mA
NS 143
NS 143K		 T1 = Ni 2226 0.7 mA -50 to 130 °C (connection head ambient temperature -30 to 100°C)
PTS 140
PTS 140K		 Pt 100/3850 3 mA
PTS 240
PTS 240K		 Pt 500/3850 1,5 mA
PTS 340
PTS 340K		 Pt 1000/3850 1 mA
HS 140
HS 140K		 thermistor NTC 20 kΩ 1 mW *)

*) maximum power consumption
Note: x = version A or version B

Sensor type NK 560 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 		ambient temperature around the connection head -30 to 70 °C
Power supply (U) 11 to 30 VDC recommended value 24 VDC
Load resistance 150 Ω for power supply 12 VDC
700 Ω for power supply 24 VDC
Output signal - sensing elements break > 24 mA
Output signal - sensing element short circuit < 3.5 mA

**)According to the customer‘s requirement, it is possible to provide a customized measuring range from -40 to 150 °C; the minimum span of the range must be 35 °C (e.g. -20 to 15 °C; -30 to 80 °C)

Others Parametrs
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
Measuring error for NS 540(K), NS 740(K) *), **) < 0.6 % of the measuring range, minimum 0.5 °C
Sensor connection according to the wiring diagram
Time response τ0,5 < 4 s (in flowing water at 0.4 m.s-1)
Recommended wire cross section - sensors with the grommet 0.35 to 1.5 mm2
Type of connector in the head - sensors with connector RSFM4 - Lumberg
Insulation resistance > 200 MΩ at 500 VDC, 25° ± 3 °C; humidity < 85 %
Ingress protection IP 65 in accordance with EN 60529
Material of the case brass
Material of connection head POLYAMIDE
Standard strap length 40 cm
Minimum pipe diameter 20 mm
Operating conditions
ambient temperature:
-50 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

*) The temperature sensor´s measurement error is dependent on the influence of ambient temperature, environmental variables and the characteristics of the measured surface (error of method).
**) It is recommended to apply heat-conducting paste or silicon grease to the measured surface, which will ensure faster response time and minimise the measurement error of the contact temperature sensor.
Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your deale

Dimensional Draft

Wiring Diagram

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