Rikien Keiki SD-1EC Smart Transmitter / Gas Detector


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The Riken Keiki SD-1EC Smart Transmitter/ Gas Detector line of smart transmitters features state-of-the-art gas detectors with durable flameproof enclosure, best operability and maximum safety, especially in hydrogen/acethylene atmospheres.

A simple magnetic control key is placed over clear marked positions on the surface plate to test and adjust the instrument without opening the transmitter in situations with the danger of explosion. This “single-man-calibration” is already in use and appreciated with other Reken Keiki gas detectors for easy maintenance. The built-in microprocessor features self-diagnosis functions and automatic zero setting to minimise maintenance work and costs compared to other sensors.

Dual alarm contacts or trouble alarm contact are provided for activation of external buzzer or alarm light. Powered by 24VDC, the unit has a 4-20mA output for communication to external controllers, for external readouts or alarming devices.

Riken Keiki SD-1EC Specification

Detection principle Electrochemical type
Gas to be detected CO/H2S
Detection range CO: 0-75 ppm/H2S: 0-30 ppm (Standard)
Detection method Diffusion type
External output 4-20mA
Power supply 24 VDC (17 – 26.4 VDC)
Operating temperature -20°C … 60°C
Placement Wall mounting
Dimensions 148 (W) x 203 (H) x 88 (D) mm
Weight 2.2 kg


Riken Keiki

The RIKEN KEIKI (KRI) product lineup includes more than 100 types of gas detectors and environmental monitoring products. Riken Keiki (RKI) Single gas detector range: 
  • 03 Series Smallest Single Gas Monitor
  • GasWatch 3 – Smallest Gas Monitor
  • 04 Series Smallest Toxic Gas Monitor
  • FP-31 Formaldehyde Gas Detector
  • SP-220 Gas Leak Checker for Combustible, Toxic, Freon and Fumigation Gases
  • SC-8000 Portable Toxic Gas Monitor
Riken Keiki (RKI) Multi-gas detector range: 
  • GX-3R Personal Gas Detector
  • GX-3R Pro Gas Detector with Wireless Communication
  • GX-6000 PID Gas Monitor
  • GX-2012 Confined Space Gas Monitor
  • GX-2009 Portable Multi Gas Detector
  • Gas Tracer PPM Leak Detector
  • Eagle 2 Multi Gas Detector for LEL, O2, H2S, CO, VOC & Toxics
  • Eagle Gas Detector
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