Atest Gaz Alpa MOD LED8, User Manual

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1 Preliminary information
The Alpa MOD LED8 Control Unit Module is a device designed to detect the presence of:
flammable gas such as natural gas (methane) and LPG (propane, propane – butane),
vapours of volatile substances (alcohol vapour, liquid fuels),
toxic gases (hydrogen sulphide, carbon monoxide),
any other gas, detectable by an appropriate sensor.
Control unit module:
reads the signals in 4 – 20 mA standard,
signals exceeding the warning alarm thresholds,
indicates gas detectors damage (e. g., breaking a wire),
works with optical – acoustic beacons.
This system is designed to protect such structures as:
residential buildings,
public utility buildings,
structures serving operation and distribution of gas and media,
sewage treatment plants,
parking lots.
A complete, typical system consists of the following elements:
gas detectors, making direct measurement of gas concentration and transforming the information
to an electrical signal. This signal is then fed to the control unit module,
the control unit which is responsible for:
• measuring gas detectors signals,
• generating warnings and alarms,
• diagnostics,
power supply unit with a battery, responsible for power supply to the control unit module and gas
detectors,
additional external acoustic device used to directly informing about the threat.
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User Manual: POD-006-ENG R03