PC2E-0341

Usable even in hazardous atmosphereswith hydrogen and acetylene present!
HART communicationcompatible
Detection target gases
Combustible gases
Combustible gases/Toxic gases

Model

SD-1
SD-1RI
SD-1GH

Carbon monoxide/hydrogen sulfide SD-1EC
OxygenSD-1OX

Extensive lineup ofmodels for any location!

Oil refineries, plants producing
basic petrochemical products

Service and utility tunnels,
construction sites

Shipping and offshore facilities

SD-1 Series
ATEX
IECEx
TIIS (Japan Ex)
MED
SIL2

Example of connection with indicator/alarm unit (e.g., RM-5000 series) and alarm monitoring system
Create a secure workplace with a comprehensive system
The SD-1 series is a compact lightweight Intelligent Gas Detector ideal for deployment in refineries and petrochemicalplants. The series includes an extensive lineup of models for detecting combustible gases, toxic gases (hydrogensulfide/carbon monoxide), and oxygen. These devices also offer various functions and features, including HART
communication and SIL2 certification. The rugged chassis and range of accessories makes this series ideal for theharshest environments. Connecting this product to indicator/alarm units at local safety points and upstream systems incentralized monitoring rooms or metering rooms helps establish comprehensive disaster prevention systems.
RM‒5000 Series

SD-1 Series

Alarm monitoring system

SD-1 Series

CVVS-2 core
DC24V

CVVS-3 core

CVVS-3 coreLineup
For combustible gases

For combustible gases/toxic gases〉〉〉Specifications〉〉〉Specifications
SD-1

Model

SD-1RI

Model

SD-1GHType

TYPE GPTYPE NCーDetection principle

Semiconductor type

Detection principle

Catalytic combustion typeNew ceramic typeNon-dispersive infrared type

Detection target gas

For combustible gases/toxic gases

Detection target gas

Combustible gas

Detection method

Diffusion type

Detection method

Diffusion type

Detection range

Depends on detection target gas.

Detection range

0–100 ％ LEL

Depends on detection target gas.

0–100 ％ LEL

Alarm setpoints

Depends on detection target gas.

Alarm setpoints

25 % LEL (standard)

Depends on detection target gas.

25 % LEL (standard)

Alarm accuracy

Within ±25 % of alarm setpoint(combustible gases)
Within ±30 % of alarm setpoint (toxic gases)

Alarm accuracy

Within ±25 % of alarm setpoint

Alarm delay

Within 30 seconds after gas reaches 1 6 times the alarm setpoint

Alarm delay

Alarm indications

Gas alarm: ALM LED lights up (red).
Fault alarm: FAULT LED lights up (yellow)/information displayed.

(for identical conditions)

Transmission specifications*1

3-wire analog transmission 4–20 mA DC(common cable for power and signal [power, signal, common])Alarm indications

Gas alarm: ALM LED lights up (red).
Fault alarm: FAULT LED lights up (yellow)/information displayed.

Gas concentration display

4-digit 7-segment LED

Transmission specifications*1Explosion-proof

Flame-proof enclosure

3-wire analog transmission 4–20 mA DC(common cable for power and signal [power, signal, common])(for identical conditions)(for identical conditions)*2

Explosion-proof class

Japan Ex Ex d IIC T5 X
ATEX II 2G Ex db IIC T5 Gb
IECEx Ex db IIC T5 Gb

Protection level(for identical conditions)Japan Ex Ex d IIC T6 X
ATEX II 2G Ex db IIC T6 Gb
IECEx Ex db IIC T6 Gb

P65 equivalent

Operating temperature/ Japan Ex -20°C – +53°C (no sudden changes), up to 95 % RH (no condensation)
ATEX/IECEx -20°C – +60°C (no sudden changes), up to 95 % RH (no condensation)
humidity range
Power source
Power consumption

24 V DC ± 10％
Max. 3 W

Max. 3 W

Max. 2 W

Within 30 or 60 seconds (depending on detection target gas) after gas
reaches 1 6 times the alarm setpoint

Gas concentration display

4-digit 7-segment LED

Explosion-proof

Flame-proof enclosure

Explosion-proof class*2
Protection level

Japan Ex Ex d IIC T5 X
ATEX II 2G Ex db IIC T5 Gb
IECEx Ex db IIC T5 Gb
IP65 equivalent

Operating temperature/ Japan Ex -20°C – +53°C (no sudden changes), up to 95 % RH (no condensation)
ATEX/IECEx -20°C – +60°C (no sudden changes), up to 95 % RH (no condensation)
humidity range
Power source

24 V DC ± 10％

External dimensions

Approx. 148 mm (W) × 167 mm (H) × 88 mm (D) (excluding projections)Power consumption

WeightMax. 3.1 W

Approx. 2.0 kg

External dimensions

Approx. 148 mm (W) × 167 mm (H) × 88 mm (D) (excluding projections)

WeightApprox. 2 0 kg

*1 Specify HART communication specification requirements when ordering.
*2 Specify explosion-proof specification requirements when ordering.

*1 Specify HART communication specification requirements when ordering.
*2 Specify explosion-proof specification requirements when ordering.

Functions〉〉〉Explosion-proof in hydrogen/acetylene environments

Flame-proof enclosures enable use as an explosion-proof product in hydrogen/acetylene environments.

〉〉〉Waterproof/Dust-proof
Protection rating equivalent to IP65. Suitable for use in harsh environments.

〉〉〉Compatible with HART communications
The product sends digital signals across general analog 4 - 20 mA output lines to allow data exchange over a broadrange.

〉〉〉Equipped with self-diagnostic function
The device performs self-diagnostics after power supply starts.
In the event of an error, instead of displaying the gas concentration, the product will display a fault description(error code) pointing to a potential cause of the problem.

〉〉〉Supports gas detection by aspiration
Connecting the SD-1 Series suction cap (with gas flow inlet/outlet) to the product sensor allows gas detection byaspiration.
* Use for gas detection by aspiration requires a suction pump and aspirator unit (available separately), in addition toa power supply.

For hydrogen sulfide/carbon monoxide〉〉〉Specifications

For oxygen〉〉〉Specifications
SD-1EC

ModelModel

SD-1OX
Galvanic cell type

Detection principle

Electrochemical type

Detection principle

Detection target gas

Hydrogen sulfide/carbon monoxide

Detection target gas

OxygenDetection method

Diffusion type

Detection method

Diffusion type

Detection range

Hydrogen sulfide: 0–30 ppm Carbon monoxide: 0–75 ppm

Detection range

0–25 0 vol％Alarm setpoints

Depends on detection target gas.

Alarm setpoints

18.0 vol％Alarm accuracy

Within ±30 % of alarm setpoint(for identical conditions)

Alarm accuracy

Alarm delay

Within 30 seconds after gas reaches 1.6 times the alarm setpoint(for identical conditions)

The difference between the alarm setpoint and the concentration readingwhen the alarm is triggered is 0.
Within five seconds after detecting a 10 to 11 vol% gas
for oxygen deficiency alarm(for identical conditions)(for identical conditions)

Alarm delay

Alarm indications

Gas alarm: ALM LED lights up (red).
Fault alarm: FAULT LED lights up (yellow)/information displayed.

Alarm indications

Gas alarm: ALM LED lights up (red).
Fault alarm: FAULT LED lights up (yellow)/information displayed.

Transmission specifications*1

3-wire analog transmission 4–20 mA DC(common cable for power and signal [power, signal, common])Transmission specifications*1

3-wire analog transmission 4–20 mA DC(common cable for power and signal [power, signal, common])Gas concentration display

4-digit 7-segment LED

Gas concentration display

4-digit 7-segment LED

Explosion-proof

Flame-proof enclosure

Explosion-proof

Flame-proof enclosure

Japan Ex
Explosion-proof class*2

ATEX
IECEx

Ex d IIC T6 X
II 2G Ex db IIC T6 Gb
Ex db IIC T6 Gb

Explosion-proof class*2

Japan Ex
ATEX
IECEx

Ex d IIC T6 X
II 2G Ex db IIC T6 Gb
Ex db IIC T6 Gb

Protection level

P65 equivalent

Protection level

IP65 equivalent

Operating temperature/humidity range-10°C – +40°C (no sudden changes), up to 30 – 80 % RH (no condensation)

Operating temperature/humidity range-10°C – +40°C (no sudden changes), up to 95 % RH (no condensation)
24 V DC ± 10％Power source

24 V DC ± 10％

Power source

Power consumption

Max. 1.1 W

Power consumption

Max. 1.1 W

External dimensions

Approx. 148 mm (W) × 203 mm (H) × 88 mm (D) (excluding projections)

External dimensions

Approx. 148 mm (W) × 208 mm (H) × 88 mm (D) (excluding projections)

WeightApprox. 2 2 kg

WeightApprox. 2.5 kg*1 Specify HART communication specification requirements when ordering.
*2 Specify explosion-proof specification requirements when ordering.

*1 Specify HART communication specification requirements when ordering.
*2 Specify explosion-proof specification requirements when ordering.

SIL2-certified for all aspects of the functional safety standard—a first for Japanese manufacturers
The growing importance of safety within the processing
industry has generated demand for devices certified to becompliant with the IEC 61508 functional safety standard.
Functional safety certification seeks to promote thedevelopment of safe systems with lower risks by dividing
system safety into levels based on the likelihood of faults
that would lead to system stoppages.

Certificate / Certificat

Certificate / Certificat / Zertifikat /RK 1310015 C001

Zertifikat /Systematic Capability: SC 3 (SIL 3 Capab e)

RK 1310015 C001

Random Capabil ty: ype B Element
S L 2 @ HF =0; SIL 3 @ HF = 1; Route 1exida he eby con i ms hat theSD 1RI Infrared Gas Detector

he manu actu e
may u e he ma k

SD 1RI Infrared GasDetector

IEC 61508 : 2010 Parts 1 7
and meets equi ements p oviding a evel o nteg ity toVa id until Oct

Rev sion

20 7m sOct 2 20 4eaes aaaasea esas aasTev e

USD- RI Gas Detec oSa e y unction
he SD- RI s a th ee wi e ou wi e 4-20 mA sma t device
which detects combus ible gas haza ds It conta ns sel diagnost cs and s p og ammed to send i s ou put to a speci ed
ai u e state upon inte nal detection o a ai u eWith the SD-1 series, Riken Keiki becomes the firstmanufacturer of gas detectors in Japan to be certified tocomply with SIL2 levels in all aspects of the IEC
61508:2010 functional safety certification.

ehe SI m t mposed by the A chi ectu al Const ain s must be met oeach element

Random Capability: ype B E ement
SIL 2 @ HF =0; S L 3 @ HF = 1; Route 1eeaRandom Capab l ty

Systematic Capabi ity: SC 3 (SIL 3 Capable)a Ae ve eeSys ema ic Capab l ty
he p oduct has met manu ac u e des gn p ocess equi emen s o Sa e yIn eg i y evel SI ) 3 hese a e ntended o ach eve su ic ent in eg ty
aga nst sys emat c e o s o des gn by the manu ac u e
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SI Ve i cat on

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Assessment Repo t RK

Evaluating Assessor

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Explosion-proof/Certifications/Functionality
Model

SD-1

SD-1RIType

TYPE GP TYPE GP H TYPE NC TYPE NC H

－SD-1GHTYPE H TYPE HS

TYPE H TYPE HS－TYPE H TYPE HS

Ex d IIC T5 X

Ex d IIC T6 X

Ex d IIC T5 X

Ex d IIC T6 X

Ex d IIC T6 X

ATEX

II 2G Ex db IIC T5 Gb

II 2G Ex db IIC T6 Gb

II 2G Ex db IIC T5 Gb

II 2G Ex db IIC T6 Gb

II 2G Ex db IIC T6 Gb

ECEx

Ex db IIC T5 Gb

Ex db IIC T6 Gb

Ex db IIC T5 Gb

Ex db IIC T6 Gb

Ex db IIC T6 Gb

Compliant

MED *1〇－－－

SL
Communication
functiona ity－

Japan ExCE marking
Certifications

TYPE H

SD-1OX

Flame-proof enclosure

Explosion-proof construction

Explosionproof－

SD-1ECHART communication－－－

HART 7－－－

HART 7

*2－

－－－
－

S L2
HART 7－

HART 7－

－－－－

S L2－

HART 7*2－－－

SIL2
HART 7*1 Depends on gas type.
*2 MED-compliant models are also available. (4 - 20 mA, no contact)

Optional accessories (sold separately)
Model

Optionalaccessories(soldseparately)

Sunshade(for mounting on wallor pipe)
Protective cover(for mounting on wallor pipe)

Applications

SD-1

SD-1RI

SD-1GH

SD-1EC

SD-1OX

〇

〇

〇〇

〇

This cover minimizes rising temperatures in the main unit due toexposure to direct sunlight or radiant heat.

〇〇〇

〇

〇

Cover for protecting main unit

Display cover〇〇

〇

〇

〇

Sunshade for the display section

Calibration adapter〇〇〇〇〇

Calibration adapter

Solvent protection cover〇〇〇〇〇

Solvent protection cover for the display section.

U-bolt unit〇〇〇〇〇

Kit for mounting main unit to 2B poleRound splash-proof cap〇〇〇－－

Splash-proof cover for the sensor section.

Distributed by:
2 -7-6 Azusawa, Itabashi-ku, Tokyo 174 - 8744, Japan

Phone : +81-3-3966-1113
Telefax : +81-3-3558-9110
E-mail : intdept@rikenkeiki.co.jp
Web : https://www.rikenkeiki.co.jp/english* The contents described in this catalog aresubject to change without notice according
to the performance improvement.

PC2E-0341-210600