IECEx Certificateof Conformity
INTERNATIONAL ELECTROTECHNICAL COMMISSION
IEC Certification System for Explosive Atmospheres
for rules and details of the IECEx Scheme visit www.iecex.com

Certificate No.:

IECEx KEM 10.0038

Page 1 of 4Status:

Current

Issue No: 7

Date of Issue:

2024-04-24

Applicant:

RIKEN KEIKI Co., Ltd.
2-7-6, Azusawa, Itabashi-ku,
Tokyo, 174-8744,
Japan

Equipment:

Portable Gas Monitor Model GX-8000

Optional accessory:
Type of Protection:

Ex ia

Marking:

Ex ia IIC/IIB T4 Ga

Approved for issue on behalf of the IECEx
Certification Body:

L.G. van Schie

Position:

Certification Manager

Signature:(for printed version)Date:(for printed version)

2024-04-24

1. This certificate and schedule may only be reproduced in full.
2. This certificate is not transferable and remains the property of the issuing body.
3. The Status and authenticity of this certificate may be verified by visiting www.iecex.com or use of this QR Code.

Certificate issued by:
DEKRA Certification B.V.
Meander 1051
6825 MJ Arnhem
Netherlands

Certificate history:
Issue 6 (2022-10-28)
Issue 5 (2021-06-16)
Issue 4 (2020-06-25)
Issue 3 (2013-12-20)
Issue 2 (2011-03-07)
Issue 1 (2010-09-24)
Issue 0 (2010-05-31)

IECEx Certificateof Conformity
Certificate No.:

IECEx KEM 10.0038

Page 2 of 4

Date of issue:

2024-04-24

Issue No: 7

Manufacturer:

RIKEN KEIKI Co., Ltd.
2-7-6, Azusawa,
Itabashi-ku,
Tokyo, 174-8744,
Japan

Manufacturinglocations:

RIKEN KEIKI NARA MFG. Co., Ltd.
49‐1, Abe, Sakurai‐shi,Nara, 633‐0054,
Japan

RIKEN KEIKI Co., Ltd.
2-3, Minamisakae-cho,
Kasukabe-shi,
Saitama, 344-0057,
Japan

This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with theIEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed andfound to comply with the IECEx Quality system requirements.This certificate is granted subject to the conditions as set out in IECEx SchemeRules, IECEx 02 and Operational Documents as amended
STANDARDS :The equipment and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was foundto comply with the following standards
IEC 60079-0:2017
Edition:7.0

Explosive atmospheres - Part 0: Equipment - General requirements

IEC 60079-11:2011
Edition:6.0

Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"This Certificate does not indicate compliance with safety and performance requirements
other than those expressly included in the Standards listed above.
TEST & ASSESSMENT REPORTS:
A sample(s) of the equipment listed has successfully met the examination and test requirements as recorded in:
Test Report:
NL/KEM/ExTR10.0035/06
Quality Assessment Reports:
NL/DEK/QAR23.0010/00

NL/DEK/QAR23.0011/00

IECEx Certificateof Conformity
Certificate No.:

IECEx KEM 10.0038

Page 3 of 4

Date of issue:

2024-04-24

Issue No: 7

EQUIPMENT:
Equipment and systems covered by this Certificate are as follows:
The Portable Gas Monitor Model GX-8000 is a gas monitor designed to provide continuous monitoring of exposure to combustible gas,
oxygen (O2), carbon monoxide (CO) and hydrogen sulfide (H2S) in hazardous areas.
Ambient temperature range for use -20 ºC to +50 ºC.
Ambient temperature range during charging 0 ºC to +40 ºC.
The relation between sensor type used and gas group is per following table:Sensor typeGas group

O2 (oxygen)
CO (carbon monoxide)
H2S (hydrogen sulphide)
TE-7515 (combustible gas thermal conductivity sensor)
SH-8605 (combustible gas hot-wire semiconductor sensor)

IIC

NC-6215 (combustible gas thermocatalytic sensor)

IIB

Additional information
The performance of the Portable Gas Monitor Model GX-8000, as a safety device, is not covered by this certificate.
Electrical data
Supply: Battery unit type BUD-8000 with three series connected Alkaline Manganese AA batteries, type LR6 manufactured by Toshiba, orrechargeable battery unit type BUL-8000. Backup battery type CR1220 manufactured by Maxell.

SPECIFIC CONDITIONS OF USE: NO

IECEx Certificate
of Conformity
Certificate No.:

IECEx KEM 10.0038

Page 4 of 4

Date of issue:

2024-04-24

Issue No: 7

DETAILS OF CERTIFICATE CHANGES (for issues 1 and above)
1. Minor change on the label drawing.
2. Linked to new QARs.
3. Manufacturing location Ebina Denki is no longer listed.