Calibration Equation
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.
SP300 Calibration Curves - RDVQ w/Packless Silencer
( )
VP =
Q
2
VP
- differential pressure
at sensor, inches w.g.
Q
- air flow rate, cfm at
standard density.
K
- calibration constant
K
Unit Size
K
6
382
7
690
8
790
9
1130
10
1380
12
2025
14
2415
16
3425
5
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AIR VOLUME CONTROL VALVE - Manual
AIR VOLUME CONTROL VALVE
INSTALLATION INSTRUCTIONS
