Sp300 Cal. Curves - Rdvq W/Absorptive Silencer - Price RDV Series Installation, Operation And Maintenance Manual

AIR VOLUME CONTROL VALVE
INSTALLATION INSTRUCTIONS
SP300 Calibration Curves - RDVQ w/Absorptive Silencer
Calibration Equation
VP - differential pressure
( )
Q
2
VP =
at sensor, inches w.g.
K
Q - air flow rate, cfm at
standard density.
K - calibration constant
Unit Size K
6 570
7
790
8 1100
9 1325
10 1770
12 2450
14 3500
16 4600
4 AIR VOLUME CONTROL VALVE - Manual | priceindustries.com
Notes:
1. Gauge taps are normally supplied
with the pneumatic controls to allow
field measurement of the differential
pressure at the sensor with a
manometer, magnahelic or other
measuring device.
If the terminal velocity controls utilize
a flow-through transducer, a proper
velocity pressure reading will NOT
be read at the gauge taps and the
calibration curves CANNOT be used
for field measurement. The flow-
through transducer operates on the
principle of mass flow rather than
pressure differential.
Controls utilizing a dead-ended
pressure transducer will allow field
measurement with the gauge taps
and calibration curves provided.
2. Setting flow limits for a differential
pressure of less than 0.02 inches
is 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.
3. For field calibration of air flow limits
refer to the control contractors
documentation.