Riken Keiki 04 Series User Manual

4. Alarm Functions 4-1. Gas alarm types and alarm setpoints
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A gas alarm is triggered if the concentration of the detected gas reaches or exceeds the alarm setpoints shown in the
following table. (Japan models: Auto reset/Export models: Self-latching)
Gas alarm types include the first alarm (WARNING), second alarm (ALARM), third alarm (ALARM H), STEL alarm
(STEL), integrated alarm (A-1H) or TWA alarm (TWA)
*
, and OVER alarm (OVER).
Alarm type
First alarm
(WARNING)
Second alarm
(ALARM)
Third alarm
(ALARM H)
STEL alarm
(STEL)
Integrated
alarm
(A-1H)
TWA alarm
(TWA)
OVER alarm
(OVER)
Measured
gas name
Carbon
monoxide
Japan
50 ppm 150 ppm 150 ppm 200 ppm 150 ppm - 2,000 ppm
Oxygen
18.0 % 18.0 % 25.0 % - - - 40.0 %
Carbon
monoxide
Export
25 ppm 50 ppm 1,200 ppm 200 ppm - 25 ppm 2,000 ppm
Oxygen
18.0 % 18.0 % 25.0 % - - - 40.0 %
*Japan models: Integrated alarm/Export models: TWA alarm
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Riken Keiki 04 Series Specifications

General

Brand	Riken Keiki
Model	04 Series
Category	Measuring Instruments
Language	English