90.2424 Heat meter resistance thermometers with terminal head, PTB approved
■ for temperatures from 0 to 200°C, Type Direct Long (DL) and Pocket Long (PL)
■ approved to calibration regulations EO 22 and EN 14 34 as interchangeable
■ temperature probes according to AGFW regulation FW 202
■ paired and certified in-house
■ measurement directly in medium or in additional pocket
Heat meter resistance thermometers are used for temperature measurement in closed
pipe systems. Mounting in pockets with close tolerances avoids drainage of the system
in the event of replacement after the end of the certification period. Screw-in or push-in
versions with terminal head Form J are available.
The measuring insert is normally fitted with a Pt100 temperature sensor to EN 60 751,
Class B in 2-wire circuit. Versions with Pt500 or Pt1000 are also approved. 3-wire and 4-wire circuit
connections can be provided.
The resistance thermometers can be tested, paired and certified at temperatures between 20 and 150°C in the
in-house Heat Test Laboratory KF2, which has state approval, or inthe accredited test laboratory.
Measurement and certification charge for resistance thermometers to Federal Legal
Document No. 28 of 1st August 2001.