Sp300 Cal. Curves - Rdv - Price RDV Series Installation, Operation And Maintenance Manual

AIR VOLUME CONTROL VALVE
INSTALLATION INSTRUCTIONS
SP300 Calibration Curves - RDV
Calibration Equation
( )
Q
2
VP =
K
Unit Size
VP - differential
4
pressure
5
at sensor,
6
inches w.g.
7
Q - air flow
8
rate, cfm
9
at standard
density.
10
12
K - calibration
14
constant
16
Notes:
1. Gauge taps are normally supplied
with the pneumatic controls to allow
K
field measurement of the differential
340
pressure at the sensor with a
426
manometer, magnahelic or other
468
measuring device.
673
If the terminal velocity controls utilize
890
a flow-through transducer, a proper
1155
velocity pressure reading will NOT
1487
be read at the gauge taps and the
2141 calibration curves CANNOT be used
for field measurement. The flow-
3045
through transducer operates on the
4074
principle of mass flow rather than
pressure differential.
2.
3.
priceindustries.com | PRICE FUME HOOD CONTROLLER - Manual
Controls utilizing a dead-ended
pressure transducer will allow field
measurement with the gauge taps
and calibration curves provided.
Setting flow limits for a differential
pressure of less than 0.02 inches
in NOT recommended. Stability
and accuracy of flow limits may not
be acceptable due to low velocity
pressure signal. Performance will
vary depending on the terminal unit
controls provided.
For field calibration of air flow limits
refer to the control contractors
documentation.
3