WIKA operating instructions models TR10-0, TC10-0 (FM, CSA)
14503941.01 11/2021 EN/DE/FR/ES
5
EN
Sensor design in model TC10-0
The measuring insert of the thermocouple is manufactured from mineral-insulated cable.
The thermocouple consists of the internal leads of the mineral-insulated cable. The weld
spot of the thermocouple is, depending on the design, either ungrounded welded with the
internal leads of the mineral-insulated cable or grounded welded.
If the temperature sensor is designed as a grounded thermocouple, the thermocouple is
joined directly to the sheath. Designs with a diameter smaller than 3 mm and with grounded
thermocouples should be considered as galvanically connected with earth potential.
Available versions:
■
Flame path without thermowell
■
Flame path with thermowell
■
Thermometers without a flame path fitting may be designed as a welded bushing without
thermowell
Thermometers without a flame path fitting may only be used in combination with a solid-
machined, certified WIKA thermowell with a minimal wall thickness of 1 mm.
After installation of a flame path fitting into the connection head of the thermometer, a
thermowell is no longer mandatory for certification reasons. In most cases, however, the
use of a thermowell (with a wall thickness of 1 mm) is necessary for process engineering
reasons.
The design of the thermowell can be selected as desired, but the operational process
data (temperature, pressure, density and flow rate) must be taken into account. If a WIKA
thermowell is already available or installed, a flame path fitting is not necessary.
The thermometers models TR10-0 or TC10-0 are manufactured by WIKA with certified
connection heads or connection housings. These enclosures and covers are made from
aluminium or stainless steel. The cover is optionally available with a glass window.
Possible sensor measuring ranges see chapter 11 “Specifications”
The following mounting and operating information has been compiled with care.
However, it is not possible to consider all potential usage cases.
2.2 Scope of delivery
Cross-check scope of delivery with delivery note.
2. Design and function
