Checking The Device For Any Signs Of Damage; Changing The Battery; Changing The Transducer - RMG USM GT400 Operating Manual

11 Maintenance

11.3 Checking the device for any signs of damage

The device must only be used in a technically sound state.
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▪ Checking the device
1 Perform a visual check of the ultrasonic electronics viewing window.
The viewing window must be free of cracks and complete.
2 Perform a visual check of the transducer covers.
The covers must be free of cracks and breaking points.
3 Perform a visual check of the ultrasonic gas meter housing.
The housing must be free of damage resulting from mechanical influences.

11.4 Changing the battery

The ultrasonic electronics contains a battery which keeps date and time when no
power is available. If the battery is empty, the setting for the time and date are lost.
1 Have the empty battery changed by the RMG service.
Notice
Recommendation: The battery should be changed on the regular base of
recalibration but latest each 10 years.

11.5 Changing the transducer

Danger
Mortal danger from incorrect replacement of the transducer
If transducers of a system under pressure are not changed correctly, this may
cause an explosion. Escaping gas may lead to intoxication.
• Change the transducer only if you have obtained a training from RMG for
this activity.
• Observe the separate service instructions for changing the transducer.
Manual USM GT400 · EN10 · May 2021