M.:
Date: Feb. 98
Page: 11
Vacuum Leak Detector
VL - H9
SGB
Sicherungsgerätebau
GmbH
57076 Siegen
4.2 Functional description of type VL-H9/...-MV-... (design with solenoid valve)
This version of the leak detector VL-H9 is equipped with an additional solenoid valve in the suction
line. When an alarm is activated, the solenoid valve is closed, and the pump is switched off. For the
purpose of commissioning, the solenoid valve can be opened and the pump switched on by means
of a commissioning switch installed in the leak detector.
4.3 Functional description of type VL-H9/...-LS-... (design with leakage probe)
This version of the leak detector VL-H9 is equipped with an additional leakage probe which gives an
optical and acoustic signal when a leak is detected.
5
Design of the leak detector
The leak detector VL-H9 is available in various versions (see paragraph 3.5) which are listed as follows:
•
VL-H9-Ex
Complete
device
•
VL-H9/A-Ex
Operation
unit
•
VL-H9/ME
Signalling unit for one operation unit VL-H9/A-Ex
•
VL-H9/ZME
Central signalling unit for a maximum of 10 operation units VL-H9/A-Ex
•
VL-H9/A-MV-Ex
Operation unit with solenoid valve
•
VLH9/ME-MV
Signalling unit with solenoid valve control for one operation unit VL-H9/A-MV-Ex
•
Vl-H9/ME-MV-LS
Signalling unit with solenoid valve control for one operation unit VL-H9/A-MV-Ex
and the possibility of connecting a leakage probe
•
Leakage probe
Leakage probe FDL30
For further information, see additional print 'Drawings and technical data' for the vacuum leak detector VL-
H9.
This print is available upon request from SGB.
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