Maintenance
Control of contact densimeter thresholds
P51--1001EN/03
4/8
07--2012
© ALSTOM 2010. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be
relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is
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strictly prohibited.
GRID
Checking densimeter thresholds
Adjusting the
pressure of the SF
6
gas
The following table defines the steps for adjusting SF
6
pressure in t he
connection valve unit (5):
Step Action Remark
1 Open the tap (21) on the SF
6
cylinder and adjust the gas outlet
using the reducing valve (22 (low
rate of flow).
From time to time, close the tap
(21) to read the pressure on the
pressure gauge (11).
See the ”Calculating the SF
gas filling pressure for use
of the pressure gauge
(tools)” module.
2 Resume filling until the desired
pressure is reached.
3 Close the tap (21) and the valve
(22) in that order.
21
Open
Closed
22
SF
6
11
Continued on next page.
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