Connector type RTD sensor

"DS" range

 

Industrial RTD sensor

The active part of this sensor is made of a sensing element protected by a metallic sheath. Connection is made by a Jaeger, Lemo, Amphenol.... connector. Sliding or welded fittings allow a tight fixing.

Temperature range
from -200°C to +500°C

Mechanical Data
The choice of the materials and the fixing means are key elements for the sensor performance:

  • tightness
  • resistance to vibrations
  • resistance to the specific operating conditions

Mechanical resistance and response time, which seem opposite requirements, may be improved by reducing the sheath diameter in the active part.

Accuracy
1) of the sensing element:
   PT100 - PT500 - PT1000

  • Class A : + 0,15 °C + 0,002  °C [t°]
  • Class B : + 0,30 °C + 0,005  °C [t°]
  • Reduced tolerances on request

2) of the sensor:

    Accuracy depends on the sensing element and the type of assembly with 2, 3 or 4 wires.

Response time

Indicative data for a "DS" RTD sensor 1xPT100, 3 wires, with 304 SS 100 mm long protector,
temperature range –20°C + 100°C.

Time to reach x% of the temperature scale interval  :

 Diameter

 63%

 90%

  6 mm

 6.6

 13.7

  9 mm with replaceable 6 mm thermic element

 31.3

 78

Tests carried out in compliance with IEC 751 standard.

Applicable standards

IEC 751
UTE 46202

 

 

The most common dimensions are:

  • total length "L" < 1000 mm
  • diameter "D": 3 to 9 mm

 

 

 

Sensing element :


•  simple or double 100 Ohm platinum resistance
   2, 3, 4 wires

protecting tube :
•  Generally stainless steel,
•  with or without reduced tip

insulation :
•  Ceramics, ceramic powder
•  Silicone, Teflon, Epoxy resin

connexion :


•  connectors:
   Jaeger, Lemo*, Amphenol*, Souriau*...

* trademarks

options :
•  threaded fitting welded on protecting tube
•  compression fitting

Connecting diagram:

           
2 wires              3 wires            4 wires


Recommendations:

immersed length into the measured process = 10 x diameter