Pressure calibratorIt is a precision equipment used for calibrating instruments such as pressure transmitters, pressure switches, and pressure gauges. Common faults involve modules such as pressure sources, sensors, electrical signals, and mechanical components. The following are typical fault phenomena, cause analysis, and handling methods:

Fault phenomenon	Possible reasons	treatment method
Unable to build pressure	Air pump/hand pump damaged	Replace the pump body or sealing ring
	Pipeline leakage (loose joints, aging sealing rings)	Use soapy water to detect leaks, tighten joints or replace sealing rings
	Valve not closed (e.g. pressure relief valve stuck)	Clean or replace valves
Unstable pressure/large fluctuations	Gas source contains impurities (oil, water)	Install a filter and use a dry and clean air source
	Pressure controller PID parameter imbalance	Re tune the PID or contact the manufacturer for calibration
Slow boost speed	Insufficient pump power	Check the power supply voltage and replace the high-power pump
	Pressurization of large volume containers (such as gas storage tanks)	Segmented pressurization or selection of high-pressure gas source