What is boiler instrumentation?
There could be an elaborate answer !
In short - for an efficient, reliable, and safe boiler
operation, there is a need of basic instrumentation.
1. Safe sequence of motors and control devices.
2. Air fuel ratio control. Fuel measurement meter.
3. Inlet water flow measurement and control to maintain safe
water level. Mobrey switch or suitable level switch or transmitter.
Water flow meter.
4. Differential steam pressure control - pressure switch or
pressure transmitter.
5. Firing sequence controller.Purging sequence. Flame detection
and ignition control.
6. Two element or three element water level control method.
7. Safety valves.
8. Fuel tank level control if not gas used.
9. Dearator level control, deareator pressure / temp control
10. Alarm and trip limits and control
11. Suitable control cabinet with PLC or hardwired logic and
devices and suitable user interface / HMI
12. Exhaust temp, and other sox, nox measurement.
13. Blow down method and control.
14. Intet water quality monitoring and control.
If coal or bio mass used there will more add on instrumentation
and control necessary.