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Humidity Sensors
46
customer.honeywell.com
70-6925
HP971 Pneumatic Humidity Sensor
One- or two-pipe, direct-acting humidity sensor used with RP908/
RP920 Controllers to provide proportional control of pneumatic
valve or damper actuators in systems requiring humidification or
dehumidification control.
•
Corrosion resistant materials.
•
Simple plug-in air head connections.
•
Factory calibrated.
•
Continuous relative humidity indication available by using receiver
gage.
•
Integral or external restriction can be used.
HP971A One-Pipe Application
HP971A Two-Pipe Application
Application Type:
Humidity Sensor
Dimensions, Approximate:
3 1/4 in. high x 2 in. wide x 1 5/8 in. deep
(88 mm high x 51 mm wide x 41 mm deep)
Action:
Direct Acting
Airflow Usage:
0.022 scfm (10.4 mL/s)
Connections:
Push-on barb for 5/32 in. (4 mm) O.D. tubing
Maximum Operating Temperature:
125 F (52 C)
Maximum Operating Pressure:
25 psi (172 kPa)
Output Pressure Range:
3 psi to 15 psi (21 kPa to 103 kPa)
Supply Pressure:
16-21 psi (110-145 kPa)
M
2
3
1
4
8
9
N.C.
RP920A
CONTROLLER
RA
M5569
HUMIDIFIER
VALVE
M B
HP971A
HUMIDITY
SENSOR
M
2
3
1
4
8
9
N.C.
RP920A
CONTROLLER
RA
M5568A
HUMIDIFIER
VALVE
M B
HP971A
HUMIDITY
SENSOR
RA
HP970B
HIGH LIMIT
(OPTIONAL)
M B
M
Product Number
Number of
Pipes
Sensor Range
Mounting
Description
Comments
HP971A1008
1 or 2
15 to 75% RH
Vertical or Horizontal Wall Mounting or
Mounted in Duct Sampling Chamber
Pneumatic Humidity Sensor, 15
to 75% RH range
Order Cover
Separately
HP971A1024
1 or 2
15 to 85% RH
Vertical or Horizontal Wall Mounting or
Mounted in Duct Sampling Chamber
Pneumatic Humidity Sensor, 15
to 85% RH range
Order Cover
Separately
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