Certificate No:
MEDB000074D

Application of: Directive 2014/90/EU of 23 July 2014 on marine equipment (MED). This Certificate isissued by DNV GL SE based on the notification of the Federal Maritime and Hydrographic Agency ofGermany.

This is to certify:
That the Portable Oxygen analysis and gas detection equipmentwith type designation(s)Portable Gas Monitor GX-3R & GX-3R Pro
Issued toRIKEN KEIKI Co., Ltd.
Itabashi-ku, Tokyo, Japanis found to comply with the requirements in the following Regulations/Standards:
Regulation (EU) 2020/1170,
item No. MED/3.30. SOLAS 74, Regulation II-2/4, VI/3, XI-1/7, FSS Code 15 andMSC.1/Circ.1477, IMO MSC.1/Circ.1581.

Further details of the equipment and conditions for certification are given overleaf.
This Certificate is valid until 2025-12-06.
Issued at Hamburg on 2020-12-07
for DNV GL SE
DNV GL local station:
Yokohama

Digitally Signed By: Mydlak-Röder, Christine
Location: DNVGL SE Hamburg

Approval Engineer:
Didier Girardin

Notified Body
No.: 0098

Christine Mydlak-Roeder
Head of Notified Body

The mark of conformity may only be affixed to the above type approved equipment and a Manufacturer’s Declaration of Conformity issued when
the production-surveillance module (D, E or F) of Annex B of the MED is fully complied with and controlled by a written inspection agreementwith a Notified Body. The product liability rests with the manufacturer or his representative in accordance with Directive 2014/90/EU.
This certificate is valid for equipment, which is conform to the approved type. The manufacturer shall inform DNV GL SE of any changes to theapproved equipment. This certificate remains valid unless suspended, withdrawn, recalled or cancelled.
Should the specified regulations or standards be amended during the validity of this certificate, the product is to be re-approved before being
placed on board a vessel to which the amended regulations or standards apply.
LEGAL DISCLAIMER: Unless otherwise stated in the applicable contract with the holder of this document, or following from mandatory law, theliability of DNV GL AS, its parent companies and subsidiaries as well as their officers, directors and employees (“DNV GL”) arising from or inconnection with the services rendered for the purpose of the issuance of this document or reliance thereon, whether in contract or in tort(including negligence), shall be limited to direct losses and under any circumstance be limited to 300,000 USD.
Form code: MED 201.DEU

Revision: 2020-01

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© DNV GL 2014. DNV GL and the Horizon Graphic are trademarks of DNV GL AS.

Job Id:
344.1-011097-1
Certificate No: MEDB000074D

Product description
Portable Gas Monitor GX-3R/3R Pro is a gas monitor designed to measure the combustible gases (LEL),
oxygen (O2), hydrogen sulfide (H2S), and carbon monoxide (CO). The GX-3R Pro can additionallymeasure toxic gases 1) including carbon dioxid and sulfur dioxides (CO2 and SO2). The gas sampling isby diffusion. The model does not have internal suction pump. Li-ion battery unit BP-3R (for GX-3R) and
BUL-3R (for GX-3R Pro) are for power supply.
[GX-3R]
Detection
target gas
Detection
principle
Detection range<Service range>
1 digitHC or CH4O2CO

New ceramic type

Electrochemical type

Electrochemical type0 - 100.0 %LEL

0 - 25.0 vol%< - 40.0 vol%>0 - 500 ppm< - 2000 ppm>

Electrochemical
type
0 – 100.0 ppm<- 200.0 ppm>

1 %LEL0.1 vol%

1 ppm

0.1 ppm

Power supply
Dimensions
WeightOperating Temp.
Ingress proof rating[GX-3R Pro]
Detection
target gas
Detection
principle
Detection range<Service range>
1 digit
Detection
target gas
Detection
principle
Detection range<Service range>
1 digitPower supply
Dimensions
WeightOperating Temp.
Ingress proof rating

H2S

Lithium ion rechargeable battery unit [BP-3R]
Approx. 58mm (W) × 65mm (H) × 26mm (D) (excluding protrusions)
Approx.100g-20 °C to +50 °C (no sudden changes) (at a constant condition)
IP68

HC or CH4O2CONew ceramic type

Electrochemical type

Electrochemical type0 - 100.0 %LEL

0 - 25.0 vol%< - 40.0 vol%>0 - 500 ppm< - 2000 ppm>

Electrochemical
type
0 – 100.0 ppm<- 200.0 ppm>

1 %LEL0.1 vol%

1 ppm

0.1 ppm

SO2

H2S

CO2 1)

1)

Electrochemicaltype
0 – 5.00 ppm<- 10.00 ppm>
0.05 ppm

Infrared type0 - 5.00 vol%< - 10.00 vol%>0.01 vol%0 - 10000 ppm
20 ppmLithium ion rechargeable battery unit [BUL-3R]
Approx. 73mm (W) × 65mm (H) × 26mm (D) (excluding protrusions)
Approx.120g-20 °C to +50 °C (no sudden changes) (at a constant condition)
IP68

Note: 1) Toxic gas detection not part of MED/3.30 homologation as documented by present certificate.

Form code: MED 201.DEU

Revision: 2020-01

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Job Id:
344.1-011097-1
Certificate No: MEDB000074D

Place of manufacture
RIKEN KEIKI Co., Ltd.
2-3.Minamisakae-cho, Kasukabe
SAITAMA, JAPAN 344-0057

Application/Limitation•Thermal shock test and Oil resistance test in accordance with IEC 60945 : 2002 (Ed.4) additionallycarried out (see report No. 20-284(E) dated 2020.11.19 and 20-329(E) dated 2020.12.03 and 20334(E) dated 2020.12.04).

•-The equipment is compliant with following DNVGL location Class and application:
EMC-A : All locations except bridge and open deck (IEC 60092-504 (2016) table 1 item 15-20)
Enclosure D: (IP68) (Location acccording ref. IEC 60529:2001
VIB-A: General applications (ref. IEC 60092-504 (2016) table 1 item 10)
TEMP-C : Location (-25°C to +45°C) (ref. IEC 60092-504 (2016) table 1 item 6-7),
Compliant with IACS UR E10 Rev, 07•Ex-certification is not covered by this certificate. Application in hazardous area to be approved ineach case according to the Rules and Ex-Certification/Special Condition for Safe Use listed in valid
Ex-Certificate issued by a notified/recognized Certification Body.
The following paragraph provided for information only, is based on information received from themanufacturer, but not verified by DNV GL.
Information on Ex-Certification received from manufacturer – Not verified by DNV GL
Equipment
CertifiedCertificate No.

[GX-3R][GX-3R Pro]
•II 1 G Ex da ia IIC T4 Ga or Ex ia IIC T4 Ga andI M1 Ex da ia I Ma or Ex ia I Ma,-40ºC to +60ºC

DEKRA 17ATEX0103 X

Each Equipment delivery to be provided with installation and user manual.

Type Examination documentation
HiddenDEKRA 17ATEX0103 X issued by DEKRA Certification B.V. Issuing date 2020.07.07
ReportNo. 20-260(E)No. 20-261(E)No. 20-281(E)No. 20-282(E)No. 20-283(E)No. 20-284(E)No. 20-329(E)No. 20-334(E)No. 382-180023-1
No. 382-180023-2
No. 400-2000035
No. 400-2000036-1
No. 200989-1
No. 200989-2
No. 41500120P

Form code: MED 201.DEU

Issuing
date
2020.11.10
2020.11.10
2020.11.18
2020.11.17
2020.11.11
2020.11.19
2020.12.03
2020.12.04
2018.08.10
2018.08.10
2020.08.31
2020.08.31
2020.10.14
2020.10.14
2020.07.30

Revision: 2020-01

Drawings
M3-4777-14-01K
M3-4777-14-02K
M3-4777-15-01K
M3-4777-15-02K
M3-4777-15-03K
M3-4777-15-04K
E4-6991-5797-70-01K
E4-6991-5798-40-01K

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Job Id:
344.1-011097-1
Certificate No: MEDB000074D

Tests carried out
IEC 60945:2002 incl. IEC 60945 Corr. 1: 2008,
IEC 60092-504:2016,
IEC 60533:2015,
Category 2: (explosive gas atmospheres):— EN 50104:2010,— EN 60079-29-1:2016,— EN IEC 60079-0:2018,— EN 60079-11:2012

Marking of productFor identification to this type examination certificate the products shall be marked with:- Manufacturer's name or trademark- Type designation- Mark of Conformity (see front page)
END OF CERTIFICATEForm code: MED 201.DEU

Revision: 2020-01

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