OHC-800

Innovative explosion-proof calorimeter which combines both an optical interferometric and an ultrasonic sensor to obtain continuous, highly accurate calorific value readings for mixed gases.

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Feature01

Perfect for facility operations control

Features OIML Class A precision which rivals that of gas chromatography. Allows for continuous measurements every 250 milliseconds and a rapid response time with a T90 of less than 5 seconds. The OHC-800 uses a combined optical interferometric and ultrasonic sensor system for optimal precision and rapid continuous response times, making it the perfect tool for facility operations control.

Feature02

Maintenance-free

The OHC-800 uses physical sensors rather than chemical reactions, eliminating the use of consumables and therefore the need for ongoing internal maintenance. (Regular verification of indicated values using standard gas is recommended.) Its physical sensors provide lasting stability without loss of sensitivity over time, and have even been known to last as long as 10 years before replacement.

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Feature03

Address climate change challenges

Measure the calorific value of a wide variety of gases, including those related to climate change such as hydrogen, methanol, and ammonia. Here are just a few examples of gases OHC-800 has been used with:

Hydrogen
Natural gas with hydrogen
Steel gases (COG, BFG, LDG)
Flare gas
E-methane
Renewable natural gas
Biogas
Methanation gas

Application

Robust design

A robust product design that can withstand harsh environments, eliminates the risk of sudden measurement outages.

・Operating temperature: -20 to 57℃
・IP: equivalent to IP66/67
・ATEX/IECEX/FM/ etc.

Customizable

We are able to customize a single unit to meet customer's requirements for measuring gases and applications.

Please contact us for more information.

Space saving

The optimized design of the OHC-800 sampling components means installation can be undertaken in the smallest possible space

Product Name	OHC-800
Product Image
Product Subtitle	Explosion-proof Calorimeter
Product Type	Fixed Gas Analyzer
Industries	Infrastructure, Sustainable Energy, Marine, Oil & Gas, Steel
Use Purpose	Measure Calorific value
Single/Multi	Single
Certification	Japanese Certification, IECEx, ATEX, China Ex (China), FM (USA, Canada), etc.(dependsonthespecification)
Detectable Gas	Fuel gases such as Natural gas, 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 gas, Biogas with LPG, Hydrogen
Detection Range	Calorific value : 25.00 to 50.00 MJ/m3 (Gross 0℃, 101.325 kPa converted) Density : 0.500 to 1.500 (specific gravity converted)
Principle of Detection	N/A
Sampling Method	External sampling device
Ingress Proof Rating	IP 66/67
Dimensions	Approx. 286(W)× 453(H)× 150(D) mm
Weight	Approx. 23 kg
Remarks	・Self-diagnostic function ・Easy to switch the display among “Calorific value”, “Density” and “WOBBE index”
Power Source	100 to 240 VAC±10 %, or 24 VDC ±10 % AC/DC switchable in the setting mode
Continuous Operation	N/A
Operating Temperature Range	-20 to +60 ℃ (no sudden changes)
Operating Humidity Range	0 to 95 %RH (no condensing)
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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.

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