HMG 3010
Page 24
Edition 2013-03-26 - V04 R01
Part No.: 669855
In order to measure the flow rate using a
differential pressure measurement at a flow
rate orifice, select the item
Orifice meas-
urement Q=f(dP)
. Then select the number
of decimal places and the unit (of measure-
ment).
A flow rate orifice is supplied with infor-
mation showing the correlation between
pressure differential and flow rate. For ex-
ample, on a HYDAC EVS 1000 it says: cali-
bration factor 4.87 bar at 350 l/min. Enter
these values under the flow rate and pres-
sure.
Here again the menu
Organise curves
appears, (for a function description and handling,
see
Pressure differential dP
above). Curve recording can be carried out exactly as de-
scribed above.
If you are using a HYDAC EVS 1000 flow rate measurement orifice, you can also use this to
record curves. On the EVS 1000 there are 2 pressure ports before the orifice (ports 1 and 2)
and one after (port 3).
To make a recording, connect the pressure transmitter from channel A to port 1, and the one
from channel B to port 2. To start measurement you need only then to change the pressure
transmitter from port 2 to port 3.