Steam boiler level control and monitoring

What are steam boiler level control and monitoring devices?

Level transmitters transmit information about surface level movements to a controller, which in turn controls control valves and pumps according to set parameters.

Selection of level control and monitoring devices

For continuous level measurement, our selection includes GESTRA capacitive electrodes. The measurement works as follows: the sensor and the tank form the two electrodes of a capacitor. A change in capacitance due to a change in surface level is further converted by the electronics into surface level information, and the sensor sends a 4-20 mA signal to the system. The sensor is either equipped with an integrated active transmitter (4-20 mA output) or with a separate amplifier, in which case the communication between the sensor and the amplifier is digital.

When sufficient limit data is available for surface control, the best solution is GESTRA conductive electrodes, from which a maximum of four separate limit signals can be obtained. A compact model is also available, in which the electrode is integrated with four separate voltage-free switching contacts.

For surface level monitoring, there are SIL 3 rated water level monitoring systems available.

Aplisens pressure isolation transmitters are suitable for the same applications as electrode type sensors. Additionally, they can be used in applications where electrode type sensors are not suitable due to high temperature or pressure.

We assist in selecting surface level measurement and control devices according to application requirements. Ask our contacts for more information.