Differential Pressure Measurement - oventrop AQH Notice D'utilisation

Commissioning
Presetting
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.2
7.2

Differential pressure measurement

To find out whether the differential pressure is high enough for an automatic
flow control of the thermostatic valve AQH, you measure the differential
pressure with the help of the Oventrop measuring system OV-DMC 3, the
differential pressure measuring stem and the Demo-Bloc (see section 4 auf
Seite 23).
Proceed as follows:
1. Unscrew the valve insert with the help of the Demo-Bloc.
For further information please refer to the operating instructions
supplied with the Demo-Bloc.
2. Measure the differential pressure with the help of the differential pres-
sure measuring stem. The differential pressure must reach or exceed the
differential pressure Δp min. (see section 3.3 auf Seite 22).
3. Refit the valve insert. The torque amounts to 15 Nm.
4. Carry out a leakage test.
28
Presetting values,
∆p = 150 mbar - 1500 mbar
qm [kg/h]
50
100
150
200
250
300
350
400
420
Thermostatic valve AQH
V
[l/s]
0.0139
0.0278
0.0417
0.0556
0.0694
0.0833
0.0972
0.1111
0.1167
118309480-V01.05.2020
∆t = 20 K
Heat output
1200 W
2300 W
3500 W
4650 W
5800 W
7000 W
8150 W
9300 W
9800 W