Always install control valves downstream of
flowmeter in order to avoid cavitation or distortion
of flow profile.
Never install flowmeter on a pump suction side in
order to avoid cavitation or flashing in the
flowmeter.
2.4 Pipe
flanges
Refer to dimensional drawings for flange spacing
and in addition allow for thickness of gaskets.
Install flowmeter in line with pipe axis. Pipe flange
faces must be parallel to each other, max.
Permissible deviation: Lmax - Lmin
≤
0.5 mm
(0.02").
2.5
Pipes with cathodic protection
Pipes with electric corrosion protection are generally insulated inside and outside so that the fluid
has no conductive connection to ground. The flowmeter must be insulated from the pipe. Note the
following when installing the flowmeter:
The pipe flanges must be connected to each other using a copper cable (L), but must not be
connected to the flowmeter.
The bolts for the flange connections and the gaskets must be insulated. Use sleeves and washers
that are made of insulating material (these must be provided by customer).
1. Flange of flow sensor
2. Pipe flange
3. Gasket
4. Bolt
5. Nut
6. Washer
7. Insulating sleeve
Follow grounding instructions.
Use
≥
4 mm² (
≥
AWG 10 cable).
Note: No earthing cables are supplied by KROHNE.
UFM
3030
7
