The function of the
ABB temperature transmitter is to amplify the electrical signals from the sensor, to correct and depending on the model galvanically insulate them. The conditioned signal can then easily be transmitted over long distances to the in-/output sections of a process control system or controller.
Since the electrical signal from the thermocouple or resistance thermometer is relatively strong, signal amplification in close proximity to the sensors is not required. As a result, three basically different mounting arrangements for temperature transmitters have been evolved:
Mounting
In practice three types of mounting arrangements for temperature transmitters are distinguished.
- Rail Mounting
Rail Mounting is the oldest known mounting arrangement for temperature transmitters. The most common design is the 19" or DIN rail mounting, as well as the direct integration into the in-/output connections of regulators, valves or controllers.
- Field Mounting
Temperature transmitters for direct Field Mounting are mounted in their own rugged housings. The field mounted temperature transmitter can also be used in difficult industrial environments without the requirement for special protective measures and can be mounted in the close proximity to the sensor.
- Head Mounting
In Sensor Head Mounting the transmitter is integrated in the housing (connection head) of the temperature sensor. Temperature transmitters which are used for this mounting design are designated as sensor head transmitters.
Temperature Transmitter Applications