WARNING
If this device is used with flammable gases such as natural gas, propane or butane, mount it on the
upstream side of the safety shutoff valve.
When air gets in the pipe and an explosive mixture is produced, and if a sensor should make a spark
due to lightning or other reasons, the mixture may explode inside the pipe.
The mass of this device is 7 to 23 kg according to the model number.
Ensure to take complete precautions and care while handling for transportation or installation. For
safe handling, two or more persons are required while handling this device.
Accidental dropping of the device on the foot might cause injury.
Do not hold the device by the converter alone.
Doing so might damage the device, or the pipe connector section may drop off.
Do not use this device or its installed pipes as a scaffolding.
Doing so might damage the device or the pipe, or might cause physical injury.
Do not disassemble this device.
If it is disassembled when pressure remains in the pipes, the device could be damaged or someone
could be injured by flying parts.
CAUTION
Be sure to use this device for a flow not exceeding 36 m/s, the maximum measurable velocity.
To prevent excessive flow, use a suitable means to control the supply pressure or use a throttle valve
or the like to control the flowrate. If the velocity exceeds the maximum measurable velocity, both
the flowrate display and the output voltage/current may indicate considerably lower values than
the actual flowrate. Refer to;
Behavior when the flowrate greatly exceeds the upper limit of flowrate (page 7).
If damage could result from the abnormal functioning of this device include appropriate redun-
dancy in the system design.
Be sure that the operating gas temperature does not fall below −15°C.
Using the gas below −15°C, the O-ring might crack and cause gas leakage.
Prevent foreign matter from entering the device.
If the rust, water droplet, oil mist or dust in the piping flows into the device, measurement error
might occur and result in damaging the device.
If there is a possibility that any foreign matter flows into the device, provide a filter, strainer or mist
trap capable of eliminating more than 1 μm foreign matter at the upstream, and periodically in-
spect and replace the filter.
If this device is used for monitoring flowrate of the burner, consider the piping instrumentation lest
the backfire damage this device.
When connecting the load to the output terminals, do not exceed the rated value shown in the
specifications.
Doing so might cause the damage of this device.
This device is a precision instrument.
Do not drop it or subject it to shock. Doing so might damage the device.
Safety Precautions
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