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 DEK 16.0005X

Page 1 of 4

Status:Current

Issue No: 2

Date of Issue:

2020-07-07

Applicant:

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

Equipment:

Gas detector Model SDWL-1EC, SDWL-1DEC, SDWL-1OX, SDWL-1DOX, SDWL-1RI, SDWL-1DRI andRepeater Model RTWL-1

Optional accessory:
Type of Protection:

Ex iaMarking:Ex ia IIC T4 Ga

Approved for issue on behalf of the IECEx
Certification Body:

R. Schuller

Position:

Certification Manager

Signature:(for printed version)Date:

2020-07-07

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 1 (2017-06-22)
Issue 0 (2016-07-19)

IECEx Certificateof Conformity
Certificate No.:

IECEx DEK 16.0005X

Page 2 of 4

Date of issue:

2020-07-07

Issue No: 2

Manufacturer:

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

Additional
manufacturinglocations:

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

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

This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with
the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, wasassessed and found to comply with the IECEx Quality system requirements.This certificate is granted subject to the conditions as set out in
IECEx Scheme Rules, 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/DEK/ExTR16.0008/02
Quality Assessment Report:
NO/PRE/QAR19.0018/01

IECEx Certificateof Conformity
Certificate No.:

IECEx DEK 16.0005X

Page 3 of 4

Date of issue:

2020-07-07

Issue No: 2

EQUIPMENT:
Equipment and systems covered by this Certificate are as follows:
The Gas detector Models SDWL-1EC, SDWL-1DEC, SDWL-1OX, SDWL-1DOX, SDWL-1RI and SDWL-1DRI are fixed-type gas monitorswith wireless communication function designed to provide continuous exposure monitoring of toxic gas, oxygen (O2) and flammable gas bydiffusion sampling method. The reading of gas detected or the status information of the equipment is indicated on the front LCD display, orsent to the high-order system by wireless communication. The Repeater Model RTWL-1 is a fixed-type repeater with wirelesscommunication function and no function of gas measurement. An optional antenna cable is available for the Gas detector or the Repeater.
Ambient temperature: -20 °C to +60 °C.
Additional information
The performance of the Gas detector Models SDWL-1EC, SDWL-1DEC, SDWL-1OX, SDWL-1DOX, SDWL-1RI and SDWL-1DRI, assafety devices, are not covered by this certificate.
Electrical data
Supply: Replaceable battery pack type RK9915, which includes two series-connected lithium-thionyl chloride batteries, model TL-5930
manufactured by TADIRAN.
SPECIFIC CONDITIONS OF USE: YES as shown below:
Because a part of the antenna is made of plastic, if it is mounted in an area where the use of EPL Ga equipment and group IIC is required,precautions have to be taken to avoid electrostatic charge.
Because the enclosure is made of aluminium, if it is mounted in an area where the use of EPL Ga equipment is required, it must be
installed such, that, even in the event of rare incidents, ignition sources due to impact and friction sparks are excluded.

IECEx Certificate
of Conformity
Certificate No.:

IECEx DEK 16.0005X

Page 4 of 4

Date of issue:

2020-07-07

Issue No: 2

DETAILS OF CERTIFICATE CHANGES (for issues 1 and above)- addition of the manufacturing location- evaluation per IEC 60079-0: 2017 (ed.7.0)