Description
The TCMC is a resistance thermometer cable probe.
It measures at measuring points where there is no space for a connection head: a rigid protective tube, pressed firmly at the transition, and a fixed cable directly leading to evaluation. There is no terminal compartment and no electronics – the probe is inserted into a bore, a compression fitting, or a flange. The protective tube is made of 1.4571 (316Ti) and is approved up to 600 °C, with Ø 4, 5, or 6 mm and a wall thickness of 0.25 … 1 mm; the nominal lengths are 30, 46, 50, and 70 mm, the maximum length 2000 mm. The protection class is IP 65 up to 250 °C.
The transition to the cable is pressed; a heat shrink tube serves as bend protection, optionally a spring or a crimped transition. The standard cable length is 2 m. The response time at 6×0.5 mm is t90 30.9 s, at 6×1 mm t90 22.1 s.
A Pt100 or Pt1000, single or double, in 2-, 3- or 4-wire circuit and without insulating material, serves as the measuring element. The sensor's operating range extends from -200 … +450 °C; the accuracy can be ordered in five stages from Class A to B1/10DIN. The resistance value is immediately available at the output, at open ends of 70 mm; the core colors are shown in the data sheet according to DIN 60751. A transmitter is not documented. For insulation, the manufacturer only specifies a test voltage of 500 VDC.
Note before ordering: The operating range is determined by the cable, not the probe – PVC withstands -5 … +70 °C, silicone -45 … +180 °C, PTFE -75 … +205 °C, and glass fiber -60 … +550 °C; a sensor up to +450 °C is useless with a PVC cable. The ambient temperature is not the medium temperature – with a cable probe, the cable is in the ambient environment. IP 65 does not apply to the version with braided shielding. The source does not specify a standard for the accuracy classes – if a limit deviation in Kelvin needs to be guaranteed, it must be requested in writing from the manufacturer. In the order key, the digit 3 is missing for the nominal length; digits 0, 1, 2, 4, and 5 are specified; therefore, the length must be clearly stated in the order. Weight, system pressure, CE mark, and explosion protection are not documented. The GL version is the TCMD with the number GL TAA00002H5, only with Ø 6 mm and two nominal lengths.
Advantages at a glance
- Pt100 or Pt1000, single or double, -200 … +450 °C
- 2-, 3- or 4-wire circuit, core colors according to DIN 60751
- Protective tube 1.4571 (316Ti), Ø 4, 5 or 6 mm, up to 600 °C
- Nominal length 30 … 70 mm, up to 2000 mm on request
- Five cable constructions from PVC to glass fiber, -5 … +550 °C
- GL version available as TCMD