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 combustible gas detection alarm system GP-147.
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 alarm system and its specifications. It contains information required for
using the alarm system 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 alarm system.
1-2. Purpose of use
This product is a combustible gas detection alarm system designed exclusively for the detector head
using combustible gas sensor.
The alarm system is a safety unit, not an analyzer or densitometer which performs
quantitative/qualitative analysis/measurement for gases. Please fully understand the features of the
alarm system before using it, so that it can be used properly.
A combustible gas that leaked into the air is detected by a combustible gas detector head connected to
the indicator/alarm system.
As a detection result, gas concentration is displayed on the LCD (bar meter display (green and red)).
Gas concentrations are displayed in different colors according to danger levels, i.e., in green when the
alarm setpoint is not exceeded, and in red if the alarm setpoint is reached or exceeded.
The alarm system is equipped with the gas alarm contacts of two individual outputs "(First gas alarm
contact) + (First gas alarm contact [standard] or Fault alarm contact [option])".
The base unit provides a common alarm contact, common alarm voltage output (0/6/12 VDC
[standard]), contact output for an external buzzer and 24 VDC (load: 10 mA or less) voltage output.
The alarm system can incorporate a UPS (uninterruptible power system) battery to continue gas
detection in the event of a blackout.