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Danger of explosion!
Measuring explosive gas mixtures with OXYMAT 6
Non-explosive sample gases and gas mixtures below the LEL may be introduced into the
OXYMAT 6. Flame arrestors are not required. However, it must be guaranteed that the sample
gas in the gas path (containment system, CS) always remains below the lower explosive limit!
Rarely or occasionally explosive gas mixtures must only be introduced into the gas analyzer
if the inputs and outputs for sample gas have been each provided with a flame arrestor.
The flame arrestors must meet the safety requirements for the combustible medium.
A flame arrestor can be omitted at the reference gas inlet if it is guaranteed that the reference
gas is introduced before the analyzer is switched on and that the reference gas pressure is
monitored continuously.
Frequently or continuously explosive gas mixtures must not be connected to the gas
analyzer.
Gas mixtures above the upper explosive limit: The introduction must be individually
assessed in accordance with a separate certificate based on on-site acceptance testing.
NOTICE
Checking leak tightness of the gas path
In case of leakages of the gas path (containment system, CS), hydrogen (H
can concentrate in the gas analyzer to form an explosive mixture. Only after checking for a
suitable leak tightness of the gas path, may these gases be fed into the gas analyzer.
OXYMAT 6E (rack unit)
The enclosure of the gas analyzer has to be equipped with sufficient openings so that a gas
exchange with the environment takes place and an explosive mixture cannot build up in the
device.
The device must be set up in a well ventilated place so that an explosive mixture cannot build
up in the device environment.
If the device is installed into a cabinet, it must be insured through suitable measures that the
ventilation rate in this cabinet amounts to at least 1/h (exhaust air at cabinet cover, supply air
at cabinet bottom).
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB
DANGER
2.5 Measurement of oxygen in hydrogen with Oxymat 6E
Safety instructions
) and oxygen (O
)
2
2
21
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