Description
The TCMB is a thermocouple cable sensor with GL type approval.
It is the approved version of the cable sensor for measuring points where there is no space for a connection head: rigid protective tube, pressed transition, fixed cable for evaluation, no terminal compartment and no electronics. Compared to the TCMA, it is shorter – the nominal length is between 30 and 70 mm and is limited to 200 mm, the cable to 6 m. 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 protection class is IP 65 up to 250 °C.
The transition to the cable is pressed, with a heat shrink tube serving as kink protection, optionally a spring. Five cable designs from PVC to glass silk are available, standard length 2 m. The response time is t90 30.9 s for 6x0.5 mm, and t90 22.1 s for 6x1 mm.
The measuring element is a thermocouple Type J (Fe-CuNi) or Type K (NiCr-Ni), single or double, without insulating material. The operating range for Type J is -200 … +700 °C and for Type K it is -200 … +1000 °C. The limit deviation follows DIN EN 60584-2 Class 1: ±1.5 °C in the range -40 … 375 °C and ±0.004|t| above. The thermoelectric voltage is directly available at the output, at open ends or at a TE plug; the sensor has no transmitter. The insulation is tested with 500 VDC.
Note before ordering: The approval GL TAA00002H3 is confirmed as a mark and number, not as a certificate; the certificate must be requested before making an assurance to the classification society. We will confirm the available nominal lengths on request; the desired length must be specified in plain text in the order. The operating range is determined by the cable, not by the sensor: PVC withstands -5 … +70 °C, silicone -45 … +180 °C, PTFE -75 … +250 °C, glass silk -60 … +550 °C. The ambient temperature is not the medium temperature, and for cable sensors, the cable is in the ambient environment. IP 65 does not apply to the version with screen braiding. A declaration of conformity is available on request. Explosion protection is not documented. The version without GL approval is the TCMA, available up to 2000 mm.
Advantages at a glance
- GL type approval TAA00002H3 documented in manufacturer's data sheet
- Thermocouple type J or type K, operating range up to +1000 °C
- Limit deviation according to DIN EN 60584-2 Class 1
- Protective tube 1.4571 (316Ti), Ø 4, 5 or 6 mm, up to 600 °C
- Nominal length 30 … 70 mm, maximum 200 mm
- Cable standard 2 m, maximum 6 m, PVC to glass silk
- Version without GL up to 2000 mm as TCMA