Pressure Controllers
42 customer.honeywell.com 70-6925
PP905 Static Pressure Sensor
One-pipe, direct-or reverse-acting pressure sensor used with
RP908/RP920 Controllers to provide control of duct static,
velocity, or differential pressure in airflow applications.
Replacement devices available for Johnson, Powers, Robertshaw,
Barber-Colman, and older Honeywell devices.
• Three-diaphragm design minimizes calibration shift with static
pressure changes in velocity pressure applications.
• Not sensitive to normal supply air variations.
• Continuous static, total, velocity, or differential pressure indication
available by using differential pressure gage.
Dimensions in inches (millimeters) PP905 in Pneumatic Static Pressure Application
Application Type: Static Pressure
Airflow Usage: 0.021 cfm (9.9 ml/s)
Connections: Push-on barb for 1/4 in (6 mm) Diameter tubing
Mainline Air Pressure (min.): 16 psi (112 kPa)
Mainline Air Pressure (max.): 25 psi (175 kPa)
Maximum Safe Static Pressure: 28 in. wc (7 kPa)
Maximum Safe Operating Pressure:
25 psi (172 kPa)
Pressure Range: 2 in. wc (0.5 kPa)
Mounting: Duct mount
Temperature Range: 40 F to 120 F (4 C to 50 C)
Accessories:
14004238-001 Static Pressure Duct Head for 1/4 in., 6 mm diameter
Plastic Tubing
2-1/4
(57)
KEYHOLE SLOTS
FOR FOUR (4) NO.
10 SCREWS
8-3/8 (212)
1 (25)
4-3/16
(107)
9 (229)
M27075
X
7-7/8 (200)
4-1/8
(105)
3/64
(1)
5/8
(16)
ALLOW 2-1/2 (63)
MINIMUM CLEARANCE
FOR COVER REMOVAL
2-1/2
(63)
PNEUMATIC
AUCTATOR
PP905B
SENSOR
M
M5570A
DISCHARGE
AIR
RP920C
CONTROLLER
NORMALLY
OPEN
DAMPER
A
C
DUCT
1
2
39
REFERENCE
STATIC
Product Number Action
Output Pressure
Range Setpoint Range
Span (Non-
Adjustable)
Comments(psi) (kPa) (in. wc) (kPa) (in. wc) (kPa)
PP905B1008 Can be set for Direct
Acting or Reverse Acting
3 psi to
15 psi
21 kPa to
103 kPa
0 in. wc. to 7 in.
wc. (Adjustable)
0 kPa to 1.7 kPa
(Adjustable)
2 in. wc. 0.5 kPa The setpoint determines
the midpoint of the span.
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