Dangerous substances
For dangerous media such as e.g. Oxygen, Acetylene, flammable or toxic substances as
well as refrigeration systems, compressors, etc. must comply with the relevant regulations
beyond the general rules.
Qualified Personnel
The DV04 devices may only be installed by trained, qualified personnel who are able to
mount the devices correctly. Qualified personnel are persons, who are familiar with
assembling, installation, placing in service and operating these devices and who are suit-
ably trained and qualified.
Inward Monitoring
Please check directly after delivery the device for any transport damages and deficiencies.
Additional with reference to the accompanying delivery note the number of parts must be
checked.
Claims for replacement or goods which relate to transport damage can only be considered
valid if the delivery company is notified without delay.
Functional principle and construction
Within the DV04 there two gearwheels that are supported in low-friction bearings. During
operation, the gearwheels are driven by the flowing liquid. The movement of the gear-
wheels is sensed by two non-contact sensors located in the cover and converted into elec-
trical signals.
Between the sensor area and the measuring chamber there is a pressure-resistant anti-
magnetic separator. The signals are transmitted to the connected display device.
1: Cover
2: A-magenetic divider
3: Sensor
4: Equipment plug/socket
5: O-Ring
6: Housing
7: Measurement unit
8 Bearing jounal
9 Bearing
DV04 Instruction manual 02/2021
page 3
