SGB VL-H9, Manual

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M.:
Date: Feb. 98
Page: 1
Vacuum Leak Detector
VL - H9
SGB
Sicherungsgerätebau
GmbH
57076 Siegen
Technical description
of the explosion-proof
vacuum leak detector VL-H9
Table of contents Page
1 Object 3
2 Type 3
3 Field of application 3
3.1 Unpressurised tanks 3
3.1.1 Double-walled tanks 3
3.1.2 Interstitial spaces 3
3.2 Tanks with excess pressure 4
3.3 Liquids to be stored 4
3.4 Utilisation of an acoustic alarm 4
3.4.1 Tanks without a suction line to the tank bottom 4
3.4.2 Flat-bottom tanks 5
3.4.3 Tanks with a suction line to the tank bottom 5
3.4.4 Calculation for utilisation of an acoustic alarm for tanks with a suction line to the bottom 6
3.4.5 Other tanks 6
3.5 Leak detector types 6
4 Functional description 10
4.1 General 10
4.2 Functional description of type VL-H9/...-MV-... (design with solenoid valve) 11
4.3 Functional description of type VL-H9/...-LS-... (design with leakage probe) 11
5 Design of the leak detector 11
6 Installation instructions 12
6.1 General instructions 12
6.2 Place of installation of the leak detector 12
6.2.1 Installation of the leak detector VL-H9-Ex and of the operation unit VL-H9/A-...-Ex 12
6.2.2 Installation of the (central) signalling unit VL-H9/ZME, VL-H9/ME-... 12
6.3 Installation of the pneumatic connection lines 13
6.4 Electrical connection 14
6.5 Installation of the electrical connection line between operation unit and (central) signalling unit 15
6.6 Connection of another SGB leak detector to the central signalling unit 16
6.7 Installation of the connection line between leakage probe FDL30 and
signalling unit VL-H9/ME-MV-LS
17
6.8 Additional instructions for underground tanks 18
6.9 Additional instructions for tanks the interstitial space of which is filled with leak detection liquid 18
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