Installation and User Guide for Ultrasonic Gas Leak Detectors
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1. IntrodUCtIon
This installation guide describes how to install Ultrasonic Gas Leak Detectors Gassonic MM0100 / EH6028
and how to make the necessary checks and adjustments to ensure optimal performance.
2. desCrIptIon of GassonIC MM0100 / eH6028
The Gassonic MM0100 / EH6028 detects leaks from pressurised gas systems by sensing the airborne
ultrasound produced by the gas escaping. This detection method is Omni-directional. It can function in
extreme weather conditions and is ideal for monitoring leaks from valves and flanges in complex pipeline
systems, both onshore and offshore.
The Gassonic MM0100 detector has an adjustable alarm trigger level setting (7 levels, from 44 to 104dB
in 10dB steps) and an internal adjustable alarm delay from 0 – 480 seconds. If the internal alarm delay
is set to zero, an alarm delay of at least 15 seconds should be introduced at the control system. These
functions enable the detector to recognise leaks more easily and prevent the occurrence of false alarms.
The Gassonic EH6028 detector has an adjustable alarm trigger level setting (10 levels, from 54 to 99dB
in 5dB steps) and no internal alarm delay. It is necessary for an alarm delay of at least 15 seconds to be
introduced at the control system.
Ex approved isolators must be used to limit the current and voltage to the detector. These isolators need
to be installed in the non-hazardous area. The detectors satisfies ATEX –
EEx ib IIC T6
and UL/ULC –
Class
1/Div. 1/ Group ABCD
classifications. It is certified by DEMKO (certificate no. DEMKO 02 ATEX 131173X
and UL File/NO. E228468). Copies of the certificates are available on request from your local Gassonic
representative.
3. InstallInG tHe deteCtor
3.1. Area Monitored by Gassonic MM0100 / EH6028
sound in Air:
Sound pressure levels (SPL) decrease by
approximately 6dB each time the distance
is doubled.
This means that if a gas leak generates
a SPL of 100 dB at 1 metre the SPL will
drop by 6 dB every time the distance from
the gas leak is doubled. As illustrated in
the diagram, the SPL at 2 metres will be
94 dB.
Summary of Contents for GASSSONIC EH6028
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