Operation, Maintenance, Troubleshooting – Bronkhorst Mass Flow User Manual
Page 6: Appendices
BRONKHORST HIGH-TECH B.V.
3.
Operation
3.1
General ...................................................................................................................................... page 20
3.2
Power and warm-up ................................................................................................................... page 20
3.3
Zeroing ....................................................................................................................................... page 20
3.4
Start-up ...................................................................................................................................... page 20
3.5
Operating conditions .................................................................................................................. page 20
3.6
Instrument performance ............................................................................................................. page 21
3.6.1 Sensors ...................................................................................................................................... page 21
3.6.2 Controllers .................................................................................................................................. page 21
4.
Maintenance
4.1
General ...................................................................................................................................... page 22
4.2
Gas flow sensor ......................................................................................................................... page 22
4.3
Liquid flow sensor ...................................................................................................................... page 22
4.4
Pressure sensor ......................................................................................................................... page 22
4.5
Controllers .................................................................................................................................. page 22
4.6
Control valves ............................................................................................................................ page 22
4.6.1 Solenoid valves ........................................................................................................................... page 22
4.6.2 Vary-P valve ................................................................................................................................ page 23
4.6.3 Pilot operated valve .................................................................................................................... page 23
4.6.4 Bellows valve .............................................................................................................................. page 23
4.7
K
v
-value calculation ................................................................................................................... page 24
4.7.1 For gases ................................................................................................................................... page 24
4.7.2 For liquids .................................................................................................................................. page 24
4.8
Maximum pressure drop ............................................................................................................ page 25
4.9
Calibration procedure ................................................................................................................. page 26
5.
Troubleshooting
5.1
General ...................................................................................................................................... page 27
5.2
Troubleshooting summary ......................................................................................................... page 27
Appendices
1
Gasconversion table
2
Enclosures