Cable type RTD sensor

"PS" range

Such temperature sensors are suitable for a large number of applications and operating conditions (food industry, home automation, special tooling…).
Their design makes them easy and efficient to use ; the active part of generally small dimension is prolonged by a flexible cable of variable length.
The choice of materials depends on the operating conditions of the sensor.

Temperature range
-200°C to +500°C

Mechanical data
The choice of the materials for the encapsulation, the cable and the type of crimping are the essential criteria that determine the sensor performance: tensile strength, resistance to vibrations, resistance to the operating conditions....

Accuracy
1) of the sensing element
    • PT100 - PT500 - PT1000
         - Class A : + 0,15 + 0,002 [t°]
         - Class B : + 0,30 + 0,005 [t°]
         Reduced tolerances on request

• CTN / CTP thermistor or semiconducor : depending on the chosen components

2) of the sensor
Accuracy depends on the assembly: 2, 3 or 4 wires

Response time
Below indications correspond to a PS probe with platinum resistance, 1 x 100 Ohms at 0°C.
Tests performed in compliance with IEC 751 standard, on a 1 x PT100 RTD probe, with 3 wires, temperature range: –20°C + 100°C

Time needed to reach % of the temperature step to be measured

_^diameter	_^50%	_^90%
_^3mm	_^4.4	_^9.8
_{^{4 mm}}	_^6.5	_^15.4
_{^{6 mm}}	_^11.2	_^30.4

Applicable standards :
IEC 751
UTE 46202

Certifications
PS range RTD probes may be used in potentially explosive atmospheres, provided that the requirements of the European directive ATEX 94/9/CE and our EC type examination certificate LCIE 03 ATEX 6427X are complied with. More information ...

The most common dimensions are:

2mm < D < 8mm
0.1mm < L < 50m
20mm < L1 < 1m

Sensing element :

- 2, 3, 4 wire assembly with 1x, 2x 100  at 0° platinum resistance
- NTC (negative temperature coefficient) or PTC (positive temperature coefficient) thermistor
- Semiconductor

protecting sheath / tip :
- metallic (stainless steel, brass, aluminium) with annular, hexagonal or square crimping on cable
- overmoulded resin

insulation :
- Epoxy resin
- Silicone
- Ceramics
- Teflon

box :
- undismantable junction box
- bending spring

cable :

Its choice depends on :
- the temperature to be measured
- room temperature,
- the requested level of tightness
- compatibility with the working conditions of the sensor

Operating temperatures :

_{^{conductor / insulation}}	_{^{Temperatures (°C)}}
_{^{plated copper / PVC}}	_{^{-10 / +105}}
_{^{nickel coated copper / Silicone}}	_{^{-50 / +200}}
_{^{nickel coated copper / Teflon}}	_{^{-50 / +260}}
_{^{nickel coated copper / glass fiber}}	_{^{-10 / +250 600 peak}}

Other conductors and insulation on request.

connexion :
- Bare threads or connector on request

Connecting diagram

Platinum resistance

2 wires 3 wires 4 wires

Recommendations

- Immersion length: diameter x 10
- the chosen connexion with 2, 3 or 4 wires and the required accuracy determine the "L" length
- 4-20 mA / Ohms converters may be used with such sensors

Cable type RTD sensor "PS" range

Cable type RTD sensor

"PS" range