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English–DPI 610E Instruction Manual | 27
Pneumatic System
2. Pump Operations
2.1 Pneumatic System
2.1.1 Use of Blanking Plug
2.1.2 Flexible hose
A flexible hose is delivered with the DPI 610E, to enable connection to other equipment. Two
types of hose are available: one for Safe area use and the other for Intrinsically Safe (IS)
environments.
Before use always visually check the hose for faults, such as splits or cuts in the hose.
Always make sure the instrument is safe to use.
2.1.3 Venting to atmosphere
A Blanking Plug seals the test port and stops foreign matter getting into the port.
It is good practice to attach the Blanking Plug when the test port is not in use.
To attach the Blanking Plug to the test port: put the plug into the swivel connector
and hold in position while turning the swivel connector fully counter-clockwise until
it is hand tight.
To release the plug, hold the plug in position while turning the swivel connector
clockwise until the plug can be removed.
A rapid drop in pressure can damage the instrument. Open the pressure release
valve slowly and monitor the pressure reading until you reach the desired
pressure.
To vent the system to atmospheric pressure, slowly turn the pressure release valve
fully counter-clockwise until the sensor returns to zero (gauge sensor) or 1 bar
(absolute sensor).
Pump Operations
