Plug assignment
1: U
B
(brown)
2: Channel 1 (green)
3: Channel 2 (yellow)
4: 0 Volt (white)
H1: Transmitter channel 1 (red)
H2: transmitter channel 2 (red)
Circular plug connector M12x1 (for high temperature up to 220 °C)
1: U
B
(brown)
2: Channel 1 (white)
3: 0 Volt (blue)
4: Channel 2 (black)
Operation start-up
•
Before starting the product, make sure that a sufficient quantity of the service fluid
is extant to avoid dry running. This must be taken into account especially with large
line volumes.
•
Check all fastening screws on the product.
•
Fill the unit with media.
•
Open existing shut-off elements upstream and downstream of the device.
•
Adjust pressure relief valves in the system installed for lowest opening pressure.
•
Run the device for a few minutes depressurised or with low pressure.
•
Vent the system at the highest possible point.
•
Gradually increase the pressure load up to the desired operating pressure.
•
Operate the system for so long until the final operating state is achieved.
•
Check the operating data.
•
Document the operating data of the initial start-up for later comparison.
•
Check the level of the operating medium in the system.
•
Check the device for leaks.
•
Check all threaded connections for leaks and retighten if necessary.
During operation, the two LED displays in the equipment plug flash as long as there is a
continual flow of fluid through the measuring unit.
DV04 Instruction manual 02/2021
page 8
