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 24ATEX0017X(4)

Product:

Gas detectors type SD-3 and GD-3

(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: 0The examination and test results are recorded in confidential test report number NL/DEK/ExTR24.0018/00.
(9)Compliance with the Essential Health and Safety Requirements has been assured by compliance with:EN IEC 60079-0 : 2018
EN 60079-28 : 2015

EN 60079-1 : 2014

EN 60079-11 : 2012

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 2 GII 2 GII 2 G

Ex db IIC T6…T4 Gb
Ex db ia IIC T4 Gb
Ex db [op is] IIC T4 Gb

Date of certification: 12 June 2024
DEKRA Certification B.V.

?
R. Schuller
Certification Manager
Throughout 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

Page 1/2

(13)SCHEDULE(14)

to EU-Type Examination Certificate DEKRA 24ATEX0017X(15)

Description
The gas detectors type SD-3 and GD-3 are stationary, continuous-monitoring detectors which
operate in accordance with two detection principles (diffusion and suction) and six detection
methods (non-dispersive infrared absorption method, solid sensor semi-conductor, catalytic
combustion method, hot wire type semiconductor method, thermal conductivity method andpotentiostatic electrolysis method).

Issue No. 0

They consist of flameproof enclosures with included sensor unit which can be either intrinsicallysafe (EC barrier) or flameproof with or without inherently safe optical radiation source.
Remote sensor head RIP models include a heater and optical radiation source mounted inside aflameproof enclosure.
Equipment contains the connection terminals for field connection and is provided with threadedholes M25, NPT ½” or NPT ¾” intended for Ex certified threaded entry devices.
The examination of the gas detector does not include a judgment of the functional performance ofthe equipment.
For more information about Type designation, Thermal data and Electrical data see Annex 1 toReport No. NL/DEK/ExTR24.0018/00.
Installation instructions
The instructions provided with the product shall be followed in detail to assure safe operation.
(16)

Report Number
NL/DEK/ExTR24.0018/00.

(17)

Specific conditions of use
1. The equipment with glass window plate must only be placed in areas with low risk ofmechanical danger.
2. Refer to manufacturer’s instructions for ambient temperature and T-class.
3. The flameproof joints are not intended to be repaired.
4. The manufacturer’s instructions provide guidance for the user to minimize the risk fromelectrostatic discharge. Maximum capacitance of 6 nF can occur.
5. If the surge protection device are attached to the flameproof enclosure it shall be provided
with a high strength locking compound on the mounting thread.
6. The property class of (M5) fastening screws used for fixing of the parts of the sensor headflameproof enclosure of “RIP” models specified by the manufacturer is A4-70.

(18)

Essential Health and Safety Requirements
Covered by the standards listed at item (9).
Test documentation
As listed in Report No. NL/DEK/ExTR24.0018/00.

AM 2972:4

Page 2/2