Sure-Aire™ Flow Monitoring System
13
®
2-10 VDC Transmitter Calibration Procedure
1. Test Equipment
1.1 Digital multimeter - set multimeter to read DC
voltage.
1.2
Make sure Output Signal type is set to 2-10
VDC.
2. Interconnect wiring
2.1
Validate the power is OFF on the DC power
supply and the Sure-Aire electronics.
2.2
Validate the multimeter is set to read DC
voltage.
2.3
Interconnect the multimeter (+) probe to TB3-6.
2.4
Interconnect the multimeter (-) probe to TB3-7.
2.5
Apply power to the Sure-Aire electronics.
2.6
Press the “Setup” button on the touch panel
interface.
2.7
Keep pressing the “Next” button until you reach
the Transmitter Min Value screen.
2.8
Press “Edit”, then “Inc” or “Dec” until the digital
multimeter reads exactly 2.00 VDC.
2.9
Press “Enter” to store the new value.
Greenheck
Sure-Aire V 2.00
Transmitter Min Value:
1827
Exit
Prev
Next
Edit /
Enter
2.10
Press “Next”.
2.11
On the Transmitter Max Value screen, press
“Enter”, then “Inc” or “Dec” until the digital
multimeter reads exactly 10.00 mA.
2.12 Press “Enter” to store the new value.
2.13 Press “Exit” to return to the main screen.
The 2-10 VDC transmitter calibration is complete.
Greenheck
Sure-Aire V 2.00
Transmitter Max Value:
720
Exit
Prev
Next
Edit /
Enter
NOTE
Apply a vacuum to the Low Port and the 2-10 VDC
transmitter to track the span of the pressure range.
For example, the Sure-Aire electronics with a pressure
sensor of 0 - 41.51 in. wg installed, 2 VDC = 0 in. wg,
10 VDC = 41.52 in. wg.
