CERTIFICATE(1)

EU-Type Examination(2)

Equipment or protective systems intended for use inpotentially explosive atmospheres - Directive
2014/34/EU(3)

EU-Type Examination Certificate Number: DEKRA 21ATEX0089X(4)

Product:

Portable Gas Detector 9000 series(5)

Manufacturer:

RIKEN KEIKI Co., Ltd.

(6)

Address:

2-7-6, Azusawa, Itabashi-ku, Tokyo, 174-8744, Japan(7)

This product and any acceptable variation thereto is specified in the schedule to this certificate and the documents
therein referred to.

(8)

DEKRA Certification B.V., Notified Body number 0344 in accordance with Article 17 of Directive 2014/34/EU of theEuropean Parliament and of the Council, dated 26 February 2014, certifies that this product has been found tocomply with the Essential Health and Safety Requirements relating to the design and construction of products
intended for use in potentially explosive atmospheres given in Annex II to the Directive.

Issue Number: 1

The examination and test results are recorded in confidential test report number NL/DEK/ExTR21.0064/01.
(9)Compliance with the Essential Health and Safety Requirements has been assured by compliance with:EN IEC 60079-0 : 2018

EN 60079-11 : 2012

EN 60079-1 : 2014

except in respect of those requirements listed at item 18 of the Schedule.
(10)

If the sign ”X” is placed after the certificate number, it indicates that the product is subject to the Specific Conditionsof Use specified in the schedule to this certificate.

(11)This EU-Type Examination Certificate relates only to the design and construction of the specified product. Further
requirements of the Directive apply to the manufacturing process and supply of this product. These are not coveredby this certificate.

(12)

The marking of the product shall include the following:

II 1 Gor
II 1 G

Ex da ia IIC T4…T3 Ga
Ex ia IIC T4…T3 Ga

Date of certification: 26 April 2024
DEKRA Certification B.V.

ÙL.G. van Schie
Certification ManagerThroughout this document, a point is used as the decimal separator.
© Integral publication of this certificate and adjoining reports is allowed. This Certificate may only be reproduced
in its entirety and without any change.

DEKRA Certification B.V. Meander 1051, 6825 MJ Arnhem P.O. Box 5185, 6802 ED Arnhem The Netherlands
T +31 88 96 83000 F +31 88 96 83100 www.dekra-product-safety.com Registered Arnhem 09085396

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DescriptionIssue No. 1

The Portable Gas Detector 9000 series is designed to provide continuous exposure monitoring ofup to 6 mixture toxic gases and/or oxygen by suction type method.
It contains up to 3 R-sensors for the measurement of oxygen (O2), hydrogen sulphide (H2S) andcarbon monoxide (CO) as well as maximum of 3 F-sensors out of 5 sensors for measuring of
combustible gases, toxic gases, CO2 and VOC.
F-sensor will internally process concertation calculation and transmit digital data from gas
concentration to the main CPU.
Gas sampling is done by the internal pump. Up to two pumps can be installed, sampling of two
systems is possible.
The measurement results are displayed on the LCD while gas alarms can be issued via LED andbuzzer.
The examination of the Portable Gas Detector does not include a judgment of the functional
performance of the apparatus.
Type designation
The type GX-9000 contains all sensor combinations.
The type GX-9000H is limited to combinations ofR-sensors for detection of O2 and low concentration of H2S,
F-sensors ESF for detection of high concentration of H2S andF-sensors IRF.
The type SC-9000 is limited to multiple of ESF sensors.
Following sensor options are availible:

R-sensorsName

ESR (3EC)

ESR (3EC)

ESR (3EC)
orESR (4EC)

Target Gas

O2

H2S

CO

Electro Chemical

Electro Chemical

Electro Chemical

Appearance
Detection
Principle

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Issue No. 1F-sensors
NameTarget Gas
Range

NCF
Combustible
%LEL

TEF
Combustible
VOL%

ESF
Toxicppm

IRF
CO2 / CH4 / HC
ppm / vol%PIF
VOC
ppb / ppm

Catalytic

ThermalConductivity

ElectroChemical

NDIR

PID

Appearance

Detection
principle

Marking variations and thermal data
The relation between type of battery used, combustible gas thermo-catalytic sensor model NC6322, ambient temperature range and marking symbols is given below:
Marking code

Ambient

Combustible gas

Batterytemperaturethermo-catalyticunit

Cell typesensor NC-6322
II 1 G Ex da ia IIC T4-40 °C to +60 °C

Yes

BUL-9000Ga(Panasonic)

II 1 G Ex ia IIC T4 Ga
II 1 G Ex da ia IIC T4

NCR18650GA

No-40 °C to +60 °C

Yes

BUD-9000

LR6 (Toshiba)

BUD-9000

MN1500Ga
II 1 G Ex ia IIC T4 Ga
II 1 G Ex da ia IIC T4

No-40 °C to +40 °C

Yes

Ga(Duracell)

II 1 G Ex ia IIC T4 Ga
II 1 G Ex da ia IIC T3

No-40 °C to +60 °C

YesGa
II 1 G Ex ia IIC T3 Ga

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No

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Issue No. 1

Electrical data
Supply:Battery unit type BUD-9000 with 6 Alkaline Manganese AA batteries (2 parallel lines of 3 in seriesconnected batteries), type LR6 manufactured by Toshiba or type MN1500 manufactured byDuracell
orbattery unit type BUL-9000 with 3 lithium-ion rechargeable batteries (parallelly connected), type
NCR18650GA manufactured by Panasonic.
Main unit backup battery type CR1220 manufactured by Maxell.
ESF sensor backup battery type CR1632 manufactured by MuRata.
Installation instructions
The instructions provided with the product shall be followed in detail to assure safe operation.
(16)

Report Number
NL/DEK/ExTR21.0064/01.

(17)

Specific conditions of use
For ambient temperature range see (15).
Equipment must be prevented from impact to the buzzer opening at the enclosure.

(18)

Essential Health and Safety Requirements
Covered by the standards listed at item (9).

(19)

Test documentation
As listed in Report No. NL/DEK/ExTR21.0064/01.

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