SD-3

Trusted worldwide, this functional safety standard SIL-certified high-performance fixed gas detector is found on the Approved Vendor List (AVL) of companies across the globe and is perfect for integration into your comprehensive safety management system. Supports multiple communication protocols including 4-20mA + HART and 4-20mA+RS-485 for versatility of use in a range of working environments.

Packed with Features

SD-3 series is RIKEN's most premium fixed gas detector ever. High-performance, multi-functional gas detection for larger and more sophisticated plant facilities.

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Feature01

On the Approved Vendor List of Companies Worldwide

Known for its reliability worldwide, the SD-3 Series is found on the Approved Vendor List (AVL) of companies across the globe. High-performance, versatile gas detection designed to meet the demands of larger and increasingly sophisticated plants such as those in the petrochemical industry. SD-3 Series Gas Detectors with Signal Converter are certified explosion-proof in various countries and comply with a variety of global standards such as EN Performance, SIL 2, and FM.

Feature02

Versatile Sensor Installation Methods

The SD-3 Series is suitable for four different installation methods: diffusion, suction, remote and duct mount installation.The remote-type model is equipped with sensors designed to be installed up to 20 meters away from the main unit, allowing them to be placed directly in the detection area for accurate detection in real time. Use with our optional splash guard and duct mounting kit for installation inside of ducts, or use together with an external sample pump to detect gases at heights or other hard-to-maintain places, or in environments without sufficient room to install a gas detector.

Feature03

Multiple Output Options Available

Supports a versatile range of output options including 4-20mA + HART as well as optional 4-20mA + Modbus (RS-485) and 4-20mA + contact for ease of integration into your existing system. In addition, optional contact output can output alarms (ALARM1/ALARM2) and fault alarms (FAULT), allowing you to create a local gas detection architecture using external equipment such as alarm lights and buzzers.

Product Name	SD-3
Product Image
Product Subtitle	Gas Detector with Signal Converter
Product Type	Fixed Gas Detector
Industries	Infrastructure, Sustainable Energy, Marine, Oil & Gas, Steel
Use Purpose	Safety management
Single/Multi	Single
Certification	Japanese Certification, IECEx, ATEX, China Ex (China), Functional safety(SIL), EN, etc.(depends on the specification)
Detectable Gas	Combustible, O2, Toxic
Detection Range	N/A
Principle of Detection	Semi-Conductor Method
Sampling Method	Diffusion, Suction, Remote, Duct mount
Ingress Proof Rating	IP66/67
Dimensions	Approx. 171(W) ×277(H) ×127(D) mm (Diffusion type) Approx. 171(W)× 289(H) ×127(D) mm (Suction type)(excluding projections)
Weight	Approx. 6.7 kg (Diffusion type) Approx. 7.0 kg (Suction type)
Remarks
Power Source	24 VDC (18 to 30VDC)
Continuous Operation	N/A
Operating Temperature Range	IECEx/ATEX : -40℃～+70℃(no sudden changes) or in accordance with sensor specifications if restrictions apply
Operating Humidity Range	0～95%RH(no condensation) or in accordance with sensor specifications if restrictions apply
Applicable Instruments

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Why Customers Choose Us

Since our beginnings in 1939, Riken Keiki has continued to lead the way in gas detection technology, laying the foundations that support our modern society.

Discover why customers continue to choose Riken Keiki, the global standard in gas detection equipment.

Since our beginnings in 1939, Riken Keiki has continued to lead the way in gas detection technology, laying the foundations that support our modern society.

Discover why customers continue to choose Riken Keiki, the global standard in gas detection equipment.