Riken Keiki GX-3R User Manual

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2-4. Safety information
Necessaryy information for explosion proof construction of Model GX-3R.
Overview
The GX-3R can measure up to 4 gases using 3 sensors.
The GX-3R measures the combustible gases (LEL), oxygen (O2), hydrogen sulfide (H2S), and carbon
monoxide (CO).
This model displays measurement results on an LCD and issue gas alarms (via LED and buzzer) as
needed.
Gas sampling is by diffusion. The model does not have internal suction pumps.
Power sources
The GX-3R draws power from an integrated rechargeable Li-ion battery that is not user-replaceable.
A dedicated AC adapter is used for recharging the Li-ion battery.
<ATEX/IECEx specification>
Explosion proof
structure
Intrinsically safe explosion-proof construction and flame-proof enclosures
Specification for safety
Ex da ia I Ma , Ex da ia IIC T4 Ga (with combustible gas sensor NCR-6309)
Ex ia I Ma , Ex ia IIC T4 Ga (without combustible gas sensor NCR-6309)
Ambient temperature
range
-40°C to +60°C
Ambient temperature
range (for charging)
0°C to +40°C
Electrical data
・ Lithium-ion battery: Maxell rechargeable battery model no. ICP463048XS
・ The battery should be charged with the dedicated AC adapter or by power
from a IEC60950-certified SELV power source. The maximum voltage from
the charger shall not exceed 6.3Vdc.
Certificate numbers
・ IECEx : IECEx DEK 17.0050 X
・ ATEX : DEKRA 17 ATEX 0103 X
List of standards
・ IEC 60079-0:2011
・ IEC 60079-1:2014-06
・ IEC 60079-11:2011
・ EN60079-0:2012+A11:2013
・ EN60079-1:2014
・ EN60079-11:2012
・ EN50303:2000
I M1 Ex da ia I Ma, II 1 G Ex da ia IIC T4 Ga
(with combustible gas sensor NCR-6309)
I M1 Ex ia I Ma, II 1 G Ex ia IIC T4 Ga
(without combustible gas sensor NCR-6309)

Riken Keiki GX-3R Specifications

General

Brand	Riken Keiki
Model	GX-3R
Category	Monitor
Language	English