Yamatake Corporation Operation of the Transmitter
ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter 5-17
Introducing process pressure and venting air
Step Description
1 1. Open the main valve (refer to "Figure 4-11 Gas Pressure Measurement
- Piping".) to introduce process pressure into the connecting pipe.
2. Open the local valve gradually, to introduce process pressure into the
pressure-receiving part of the transmitter.
2 1. Open the high-pressure side vent plug gradually, to vent air from the
center body.
2. After vent air, close the vent plug and the local valve.
3 Check for pressure leaks in the connecting pipe and the transmitter.
Vent / Drain plug
High-pressure side
Local valve
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