A pressure gauge with electrical contacts can’t have an alarm function, right?
Thread Content
A pressure gauge with electrical contacts can’t have an alarm function, right? Because its upper and lower limits still need to be interlocked with the pump
A relay can be installed in the control cabinet; the normally open contacts for low or high alarm signals from the electric contact pressure gauge can be connected in series with the relay coil. The contacts of the relay can be used to transmit the alarm signals to the DCS or PLC, and they can also be used for interlocking control to start and stop the pump.
Gauge with electrical contacts can have an alarm function. Although its primary function is to measure pressure, modern pressure gauges can be equipped with alarm devices. In this way, when the set upper and lower limits are reached, the pressure gauge will trigger an alarm to alert the operator to any changes in pressure. At the same time, the alarm function of the pressure gauge can also be connected to other devices, such as pump interlock systems, to achieve automatic control and protection. Therefore, pressure gauges with electrical contacts can have an alarm function. .
Adding a relay to the circuit can enable alarm functionality
An electric contact pressure gauge only provides a contact signal; whether an alarm is triggered or interlocks are activated depends on the subsequent equipment that receives this signal.