Explosion-proof
      Calorimeter OHC-800

      Technical Data & Features

      • “Opt-Sonic calculation” by using Optical Sensor and Sonic Sensor
      • Easy to switch the display within "Calorific value", "Density” and "WOBBE index"
      • Self-diagnosis function installed
      • Low running costs
      • Can be installed in all kinds of locations
      • High accuracy: OIML R140 Class A
      • Data updated every 0.25 seconds
      • High-speed response: T90 within 5 seconds

      This explosion-proof calorimeter is being used in all kinds of industrial sectors where calorimetric measurement is necessary: Gas companies, glass manufacturers, steel industry, oil refining, steel industry, ship building, laboratories, as well as universities, food industry and turbine manufacturers.

      Sampling device model RS-400
      The OHC-800 is designed to have it incorporated in the specific sampling device RS-400 series. The model of sampling device is selected in accordance with the location where the calorimeter is installed, as well as gas sampling point pressure condition etc.
      Selectable are

      • Enclosure
      • Use of pressure reducing valve for measuring gas
      • Bypass flow rate of measuring gas
      • Pressure gauge unit

      Please refer to the brochure or contact us directly for more information.

      Supported Gases

      Natural gas

      Steel gases (COG, BFG, LDG)

      LPG

      Natural gas with Hydrogen

      Flare gas

      Methane

      Natural gas with LPG

      Boil-off gas

      E-methane

      Renewable natural gas

      Off-gas from refinery

      Butane

      Biogas

      Methanation gas

      Low calorie gases

      Biogas with LPG

      Hydrogen

      Etc.

      Other gases can be accommodated by customizing sensors or settings.

      Properties:

      Principle of detection
      Constant-flow-rate gas introduction using external sampling devices
      Detection range
      Calorific value: 25.00 to 50.00 MJ/m3 (Gross 0°C, 101.325 kPa converted)

      Density: 0.500 to 1.500 (specific gravity converted)
      Explosion protected construction
      Flameproof enclosures
      Explosion proof class
      IECEx: Ex db II B+H2 T4 Gb
      ATEX: II 2G Ex db II B+H2 T4 Gb
      Ingress protection rating
      IP 66/67 equivalent
      Approvals
      Japan Ex, ATEX, IECEx, China Ex, FM
      Power source
      100 to 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 spec.)
      Dimensions
      Approx. 286 (W) x 453 (H) x 150 (D) mm
      Weight
      Approx. 23 kg
      Operating temperature range
      -20°C to +60°C (no sudden changes)
      Operating humidity range
      0 to 95 %RH (no condensation)
      Target gases
      Calorific value