WIKA TR81 防废气型热电阻温度计,带TW81保护套管,烟气电阻温度计
Resistance Thermometers for Flue Gas Temperature Measurement
Model TR81 with Thermowell Model TW81
Resistance Thermometer for Flue Gas Temperature
Measurement, Model TR81
Applications
Blast furnaces, air heaters
Red-heat and heat treatment processes
Combustion of waste and special waste products
Major heating plants, heat generation
Special Features
Application ranges up to +600 °C
Thermowell made of heat resistant steel
Measuring insert exchangeable
Gastight process connection (optional)
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? Description
These straight resistance thermometers assemblies consist of a connection head Form B, a measuring insert per DIN 43 735 and a thermowell Model TW81. Form A or C
DIN-thermowells as well as thermowells with customer specific design are available.
Process connection can be provided with a stop flange or pipe coupling, the latter type gives a gastight connection.
These temperature probes are suitable for gaseous media in low pressure ranges (up to approx. 1 bar). Various thermowell materials are used with or without enamelling to meet the requirements of thermal stress.
The measuring insert is replaceable. This makes inspection and, when servicing is necessary, replacement possible during operation and while the plant is running. Selection of normal or standard lengths enables short delivery time and the possibility of stocking spare components.
Thermowell material, connection head and sensor can be selected individually for the respective application.
A transmitter can be fitted as an option.
One of the advantages of a built-in transmitter is the increased reliability of the signal transmission.
Measuring insert
The measuring insert is made of a vibration-resistant sheathed measuring cable (mineral-insulated cable).
It is possible to ensure a spring-loaded installation of the measuring insert by means of two screws and springs in a connection head (form B). Due to this installation method, the measuring insert is easily exchangeable.
When fitting the measuring insert with a thermowell, it is very important to determine the correct insertion length (= thermowell length with bottom thicknesses of ≤ 5.5 mm).
In this connection the fact that the measuring insert is spring-loaded (spring travel: max. 10 mm) has to be taken into account in order to ensure that the measuring insert presses against the bottom of the thermowell.
The standard material used for the measuring insert sheath is stainless steel. Other materials may be offered on request.
TR81 components (with thermowell TW81)
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