Install Instructions

P7660/P7645 SERIES DRY PRESSURE SENSORS
31-00422—01 2
INSTALLATION
1. Screw mount sensor directly to duct, or in panel
using self-tapping screws or attach to a DIN rail (2
possible orientations for DIN mounting, BACK and
LEFT SIDE).
2. Plumb air lines to sensor hose barbs (Accepts 1/8” &
1/4” ID tubing). High (+) and low (-) ports are labeled
on the sensor.
3. Wire sensor for voltage or
current output as shown in
the wiring diagrams.
4. Recommendation: Apply power to sensor. With no
pressure applied, press the ZERO SET button for 2-
seconds. (For best results, temporarily connect high
and low pressure ports together while zeroing.)
LED STATUS/INDICATION
LED indicator will flash every 5 seconds for normal
operation.
LED indicator will rapidly flash when applied pressure is
greater than 110% of selected range.
LED indicator will rapidly flash momentarily when zeroing
process is complete.
TYPICAL APPLICATIONS
Velocity: Use a Pitot tube and plumb high (+) port to total
pressure (Pt) connection and low (-) port to static pressure
(Ps) connection to directly read Pt-Ps = Pv. Apply
correction constant provided by Pitot tube manufacturer.
Duct Static
: Install a static pressure pickup tube
approximately 2/3 of the way down the discharge air duct
and plumb to high (+) port for positively pressurized ducts.
Duct Static
(+)HI
HI(+)
LO(-)
Filter Status
HI(+)
HI(+)LO(-)