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SCR121-Exi

Code: SCR121-Exi
  • resistance intrinsically safe temperature sensor for hazardous areas
  • ATEX Exi approval: II 1G Ex ia IIC T4-T1 Ga; II 1D Ex ia IIIC T135°C÷450°C Da
  • temperature range -40...+550°C
  • operating temperature of connection heads max. 150°C
  • stainless steel sheath
  • drilled pressure sheath
  • sensor with a replaceable measuring insert
  • possibility of mounting a 4…20 mA temperature transmitter
Description

The resistance thermometer SCR121-Exi consists of an exchangeable measuring insert, outer protective tube (thermowell), drilled pressure sheath, and aluminum connection head. Intended for measuring the temperature of pipelines, tanks, boilers in difficult conditions. Mounting a temperature transmitter with 4...20 mA output signal is possible. The measuring insert represents the replaceable element of the complete sensor, which reduces the time and costs of maintenance of the measuring apparatus installed in the object. Spring fixation of the measuring insert provides perfect pressure to the bottom of the protecting tube, reduces the time of reaction of temperature changes, and increases the accuracy. It also reduces natural vibration. Thus, mechanical and electrical defects can be avoided.

Application areas:

  • technological installations in various industries,
  • temperature measurement of pipelines, tanks, boilers,
  • measurement of all media (gases, liquids, solids).

Specification
Measurement range
-40...+550°C
Measuring element
Pt500 resistor
Pt100 resistor
Pt1000 resistor
Accuracy
A class
B class
1/3 B class
Sheath
stainless steel 1.4541
threaded drilled thermowell
diameter 24 mm
1.7335 steel
sheath cone
diameter 18 mm
Connection head
B, IP65, -40...150ºC, aluminum
NA, IP65, -40...150ºC, aluminum
DAN, IP65, -40...150ºC, aluminum
Intrinsic safety
II (1)G [Ex ia] IIC
II (1)D [Ex ia] IIIC
Files
Data sheet