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Thermocouple Temperature Sensor – Type BM/BMC

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BM/BMC thermocouple temperature sensor with a steel protection tube and a Form B connection head
Type BM/BMC – a thermocouple temperature sensor for high temperatures in flue gases and air in ovens, kilns and furnaces

Application

Type BM/BMC is a thermocouple temperature sensor for measuring high temperatures in flue gases and air in large ovens, kilns, furnaces and hot-gas channels. Its heat-resistant steel protection tube is suited to measuring points exposed to hot combustion gases, including sulphurous atmospheres.

The sensor is configured to the duty, with a type K, N, R or S thermocouple for measurement up to 1150 °C, depending on the operating conditions. An adjustable flange or compression fitting allows the immersion depth to be set during installation.

Contamination can affect the thermocouple and cause the measurement to drift. A ceramic inner tube provides an additional barrier around the element where this protection is required.

Where it is used
Brick, tile and ceramic kilns
Furnace and boiler flue gas ducts
Combustion air ducts and hot air channels
Waste and hazardous waste incineration plants
Heat treatment and annealing furnaces
Refinery and petrochemical process heaters

Related product: Thermocouple Temperature Sensor – Type AM/AMC

Properties

Sensor element
Type K, N, R or S thermocouple to IEC 60584-1, selected for the temperature and process atmosphere.
Temperature capability
Configurations are available for temperature measurement up to 1150 °C, depending on the operating conditions.
Connection head
A Form B connection head houses the electrical terminals or an optional transmitter.
Protection tube
EN 1.4749 heat-resistant stainless steel provides resistance to sulphurous combustion gases.
Internal protection
A ceramic inner tube in C610 or C799 is available for additional protection against thermocouple contamination.
Process connection
An adjustable flange or compression fitting allows the immersion depth to be set during installation.
Transmitter
Head-mounted transmitter option for direct 4–20 mA output.
Standards
The thermocouple assembly is constructed in accordance with DIN EN 50446.