PC2E-0361

For plant safety and disaster prevention
management

Fixed WirelessGas Detectors
ModelSDWL-1 Series
ATEX (European directive for explosion-proof equipment)
explosion-proof certified
IECEx (IEC explosion-proof electrical equipment
standard test) certified<Intrinsically safe explosion-proof construction>
II 1G Ex ia IIC T4 Ga● Allows wireless communication withvarious measuring devices.
Adopts ISA100.11a (IEC 62734) wireless communication standard.
Ideal for improving safety management in locations where wiring is impractical.
ISA100.11a is an open standard that allows connection between a wide range ofmeasuring devices from various manufacturers. It promotes safety management,
allowing new connections to be established via other devices if the maincommunication route becomes unusable for some reason.

● Internal battery eliminates wiring.
The product is completely standalone, eliminating the need for power supply wiring.

● Reduced initial and running costs
Gas concentration signal is transmitted via wireless communication, eliminating the needfor cable wiring.
This greatly expands the area monitored and ensures safe, stable operation.

● Mounting configuration allows easy installation
anywhere.
Can be mounted on a horizontal or vertical pole or a wall using mounting brackets.

● Also supports suction type gas detection.
Connecting the SDWL-1 Series suction cap (with gas flow inlet/outlet) to the product sensor
allows suction type gas detection.
*Use for suction type gas detection requires a suction pump and aspirator unit (available separately), together with a power supply.

RIKEN KEIKI CO., LTD.

Specifications

Wireless specifications
SDWL-1RI

ModelDetection principle Non-dispersive infrared typeDetection target gasDetection rangeMethane/isobutane

0 to 100 %LEL

Concentration display
Detection method*
Alarm setpoints(standard settings)

Alarm delay time(for identical conditions)

SDWL-1EC

SDWL-1OXElectrochemical typeHydrogen sulfide/carbon monoxide/chlorine
H2S: 0 to 30 ppm or
0 to 50/100 ppm
CO: 0 to 75 ppm or
0 to 150/200/250/300 ppm/500 ppm
CI2: 0 to 1.5 ppm
LCD

Galvanic cell type

SDWL-1 Series

OxygenFrequency band

0 to 25.0 vol%2,400 MHz to 2,483.5 MHz

Wireless output powerNot more than 12 dBm

Applicable wirelessstandards

Construction type certiﬁcation (JPN), FCC(USA), IC (CANADA), IMDA(SINGAPORE)

Applicable EMC standards EN 50270, EN 61326-1

Diffusion type
Depends on detection
target gas

ALM1: 25 %LEL
ALM2: 50 %LEL

ALM1: 18.0 vol%ALM2: 18.0 vol%Control system configuration example

18.0 vol% alarm: Within
5 seconds after detecting
a 10 to 11 vol% gas

Within 30 seconds after providing gas
at 1.6 times the alarm setpoint

Power source(Mesh type network)

Thionyl chloride lithium battery
1 yearContinuous
operating time

2 years

Upper system for monitoring, control, etc.

In 25 °C installation environment with no alarms

Operation method

Operated using magnet control key

Operating-20 °C to +60 °C
temperature range (no sudden fluctuations)Operatinghumidity range

Model

Wireless communication
ISA100.11a (IEC 62734)
standard-10 °C to +40 °C(no sudden fluctuations)

95 %RH or less(no condensation)

30 to 80 %RH(no condensation)

95 %RH or less(no condensation)）

IP class

IP65 (excluding sensor)

Mounting method

Pole mounting or wall mounting

Explosion-proof
construction

Intrinsically safe explosion-proof construction

Explosion-proof class

II 1G Ex ia IIC T4 Ga

Externaldimensions

Approx. 157 mm (W) ×Approx. 157 mm (W) ×Approx. 157 mm (W) ×
297 mm (H) × 206 mm (D) 292 mm (H) × 206 mm (D) 297 mm (H) × 206 mm (D)WeightPole mounted type: approx. 4.5 kg; wall-mounted type: approx. 5.5 kg

Exterior color

Munsell 7.5BG5/2

Gateway

On-site wireless devices*Connecting the SDWL-1 Series suction cap (with gas flow inlet/outlet) to the product allows suction type gas detection.

Exterior drawings
157 mmInstallation schematic
Vertical pole mounting206 mm

Wall mounting (optional)

2B pole297 mm(SDWL-1RI)(SDWL-1OX)
292 mm(SDWL-1EC)

U-bolt unit

DisplaySensor

Mounting bracket Wall-mounting bracket

Accessories ・Control key

・Battery pack・U-bolt unit
(Battery case + thionyl chloride(for 2B pole)lithium battery)・Mounting bracket set ・Antenna connector cap
・Hex key wrench

Optional items

Mounting bracket

・Remote antenna cable*
・Antenna module(3 m, 10 m, 20 m)
・Solvent protection cover・Wall-mounting bracket (N-5)(Protects LCD display.)
・Small-diameter pole mounting bracket ・Aspirator unit
・Calibration adapter(Model: AS-1)*Note that configurations incorporating the remote antenna cable are not explosion-proof.

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 site : https://www.rikenkeiki.co.jp/english

PC2E-0361-210800