Explosion-proof
Gas 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"
- Measurement of various gases
- 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 gas calorimeter 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
Documents to download
Download instructions
Download catalogs
Download certificates
Further information
Q&A Gas Calorimeter OHC-800
Contents
Anything you'd like to know more about?
1. What is the OHC-800?
The OHC-800 is an explosion-proof gas calorimeter for continuous, real-time measurement of fuel gas calorific value
It uses proprietary Opt-Sonic technology (optical + sonic sensors) for highly accurate results through evaluating the calorific value of fuel gas by measuring the sound speed and the light speed passing through the fuel gas
It enables combustion optimisation, fuel cost reduction and energy efficiency improvement
2. Why choose the OHC-800
For high accuracy:
Similar to gas chromatography (GC) without complex maintenance
Complies with OIML R140 Class A for natural gas and hydrogen-mixed gas measurement
For continuous measurement and rapid response:
It measures calorific value (CV), Wobbe index and gas density simultaneously, updates every 0.25 seconds, T90 in less than 5 seconds. It responds to sudden changes in calorific value
For low running cost:
Almost maintenance-free and neglectable operating cost, no consumables, minimal reference gas
For various measurement of gas types:
This gas calorimeter can measure Natural gas, Hydrogen, 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, Biogas with LPG, Low calorie gases
3. Where to apply the calorimeter OHC-800?
With its robust design with IP66/67 protection, it’s suited even for harsh industrial environments
Ideal for energy companies and various industries such as steel, glass, food and marine
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