OVZ
OVZ K03/0416
page 9
9. Mechanical Operation
To avoid pressure peaks, the flow medium should flow slowly into the meter.
Important! Pressure peaks arising from a sudden influx of liquid,
caused by solenoid valves, ball valves etc, may seriously damage the
meter (water hammer!). Ensure that the sensor is always filled with
medium when in the operating state.
Important! Vent the piping, to prevent large air bubbles in the sensor
chamber which may cause measuring errors, erratic flow reading and
can possibly seriously damage the bearings.
10. Technical Information
Viscosity range:
10 to 800 mm
2
/s
(option: 1000 mm
2
/s)
Ambient temperature:
-10 °C to +60 °C
Medium temperature:
-10 °C to +80 °C
Max. pressure:
OVZ-..1, OVZ-..2: 10 bar
OVZ-..3, OVZ-..4: 16 bar
OVZ-..5 : 40 bar
Accuracy:
± 2.5 % f. s.
Filter mesh size:
max. 30 µm
Material:
combination/case/cover
OVZ-..1.. / POM /POM
OVZ-..2.. / POM /PMMA
OVZ-..3.. / aluminium /PMMA
OVZ-..4.. / aluminium /PSU
OVZ-..5.. / aluminium /aluminium
ovals wheels: POM
axles: stainless steel 1.4301
O-rings:
NBR; option: FPM, EPDM
Sensor targets:
oxide ceramic magnets
or stainless steel
Frequency range:
0.3-9 Hz to 2-57 Hz
Protection:
IP 65 (..I401, I302, -I303,
L 443, ...Z 3x0)
IP 67 (all others)
