1 Outline of the Product
1-1. Preface
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1
Outline of the Product
1-1. Preface
Thank you for choosing our fixed combustible gas detector head GD-A80-70.
Please check that the model number of the product you purchased is included in the specifications on this
manual.
This manual explains how to use the detector and its specifications. It contains information required for
using the detector properly. Not only the first-time users but also the users who have already used the
product must read and understand the operating manual to enhance the knowledge and experience before
using the detector.
Note that the detector cannot be used alone. Use it with the dedicated indicator/alarm unit. Be sure to read
the operating manual of the indicator/alarm unit as well.
1-2. Purpose of use
This detector is a fixed type gas detector head which detects leak of combustible gases.
The detector is a safety unit, not an analyzer or densitometer which performs quantitative/qualitative
analysis/measurement for gases.
Please fully understand the features of the detector before using it, so that it can be used properly.
The detector detects abnormalities caused by presence of gases (leak) with the built-in gas sensor.
Use the detector in combination with an indicator/alarm unit that indicates a gas concentration and
triggers an alarm.
When the detector detects a leak of combustible gas, it outputs a voltage according to the gas
concentration. The indicator/alarm unit indicates the gas concentration and triggers an alarm if a preset
concentration level is exceeded.
1-3. Definition of DANGER, WARNING, CAUTION and
NOTE
DANGER
This message indicates that improper handling may cause serious damage on
life, health or assets.
WARNING
This message indicates that improper handling may cause serious damage on
health or assets.
CAUTION
This message indicates that improper handling may cause minor damage on
health or assets.
NOTE
This message indicates advice on handling.
