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Gas Detection

Riken Keiki

OHC-800 Gas Calorimeter

With its advanced sensors and sophisticated technology, the Riken Keiki OHC-800 gas calorimeter delivers unparalleled precision and accuracy in monitoring gases. Whether deployed in industrial settings, laboratories, or commercial facilities, this system provides real-time data with unmatched reliability.

Price and delivery time will be given on request
Measuring principle Opt-Sonic method through measurement of light speed and sound speed
Measuring gas CH4 basis Paraffinic Hydrocarbon gases as represented by Natural Gas
Measuring targets Calorific value (Density / WOBBE index selectable)
Measuring range Calorific value : 25.00 - 50.00 MJ/m3 (Gross, 0 degree C, 101.325kPa converted)
Density : 0.500~1.500 MJ/m3 (Specific gravity converted)
Measuring method Constant-flow-rate gas introduction using external sampling devices
Display Full-dot LCD (with backlight), 3 color LED lamp
External Output 4-20 mA DC (isolated, source current type) maximum load resistance of 300 Ω / RS-485 communication
Failure alarm Low flow, Sensor unit abnormality, Low light amount
Failure alarm display Lamp (red) / Content indication on LCD
Failure alarm contact No-voltage contact 1a or 1b De-energize (Energize when alarming) or Energize (De-energize when alarming) Contact capacity of 2 A, 30 VDC (resistance load)
Self-diagnostic function FUNCTION CHECK (warm-up or maintenance mode), MAINTENANCE REQUIRED, OUT OF SPECIFICATION
Self-diagnostic display FUNCTION CHECK, OUT OF SPECIFICATION : Lamp (orange) / Content indication on LCD MAINTENANCE REQUIRED : Lamp (green) / Content indication on LCD
Self-diagnostic contact FUNCTION CHECK, OUT OF SPECIFICATION : No-voltage contact 1a or 1b De-energize (Energize when alarming) or Energize (De-energize when alarming) Contact capacity of 2 A, 30 VDC (resistance load) MAINTENANCE REQUIRED : SSR contact, contact capacity of 20 W, 240 VAC (resistance load)
Power supply 100 - 240 VAC ±10%, 50/60 Hz, max. 18 VA or 24 VDC ±10%, max. 5 W (The setting can be changed to either the AC or DC)
IP protection IP66 / IP67
Operation temperature -20...60℃
Operation humidity 95%RH or less (no condensing)
Dimensions 286 (W) x 453 (H) x 150 (D) mm
Weight Approx. 23 kg (50.7 lbs)

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Want more information

Get in touch with Sebastian our Riken Keiki specialist

Sebastian Kelderman

Sales Representative

WO-Europe-brochure-2025

Product catalog

General contact

Driemanssteeweg 190
3084 CB Rotterdam
The Netherlands