Low Range ZPM - Zone Pressure Sensor
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com
Specifications subject to change without notice.
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Installation & Operations
38926_ins_ZPM_LR
rev. 04/09/20
Selectable Low Ranges
Inches WC
Pascals
0 to 0.10................................0 to 30
0 to 0.25................................0 to 50
0 to 0.50..............................0 to 100
0 to 0.75..............................0 to 175
0 to 1.00..............................0 to 250
-0.10 to 0.10 ......................-30 to 30
-0.25 to 0.25 ......................-50 to 50
-0.50 to 0.50 ..................-100 to 100
-0.75 to 0.75 ..................-175 to 175
-1.00 to 1.00 ..................-250 to 250
Power:
7 to 40 VDC
for 4 to 20 mA Output
7 to 40 VDC or 18 to 32 VAC
for 0 to 5 or 1 to 5 V Output
13 to 40 VDC or 18 to 32 VAC
for 0 to 10 or 2 to 10 V Output
Port Size:
1/4” tubing (1/8” to 3/16” I.D.)
Specifications
Troubleshooting
POSSIBLE PROBLEMS:
LED does not light
LED is blinking fast
(1/2 second on, 1/2 second off)
Display is alternating between a
number and “err”
Output stuck (high or low)
Output not tracking pressure properly
POSSIBLE SOLUTIONS:
- Check power connections for proper power
- The unit may be performing an auto-zero. Wait 10 seconds and check again.
- Sensor is in an Error Mode. Cycle power.
- The measurement is out of selected range.
- Remove pressure from ports and perform auto-zero procedure
- Check rotary switch for proper pressure range selection
- Check rotary switch for proper output range selection
Typical Applications
NOTE:
Best practice is to form a drip loop in the tubing to prevent condensation from reaching the ZPM.
Fig. 8:
Duct Static Pressure Monitoring
(ZPM Pressure Sensor mounted on the duct
with a Static Pressure Probe in the duct.)
Fig. 9:
Air Filter Pressure Drop Monitoring
(ZPM Pressure Sensor mounted on the
duct with a Static Pressure Probe on either
side of the filter in a duct.)
