Electronic Humidity Alarms0 pages

Humidity Alarm

Features:
●● Continuously Monitors
Compressed Air Dryness
●● Models with 3% RH or 10%
RH Sensors
●● Models with Internal Shut-Off
of Wet Air Flow
●● Dry Contact Relay for Remote
Alarm Signal
●● Local Red Alarm Light
●● NEMA 4 Electrical Enclosure
●● Solid State Humidity Alarm
Board
●● Easily Installed Anywhere
Downstream of Desiccant
Dryer

Use these inexpensive humidity alarms for monitoring a dry compressed air line to
make sure a dry condition is present. A small sample from the air line is
continuously in contact with a relative humidity (RH) sensor. When moisture level
rises, the solid state alarm board lights the red alarm lamp and closes an internal
dry contact which can be used to operate a remote device such as a shut-off valve
or provide PLC input.

Typical Applications:
●● Desiccant Dryers
●● Dry Air Storage Tanks
●● Dry Sprinkler Systems
●● Any Critical Dry Air Application

Model
Number
20506-R
20506-R3

Discription
humidity alarm, 115 vac, 10% RH

humidity alarm, 115 vac, 3% RH

Ports

Max
PSIG

Shut Off
Valve

LxWxH (IN)

WT (LBS)

sample port 1/4” OD tube fitting

150

n/a

8” x 6” x 4.5”

10

sample port 1/4” OD tube fitting

150

n/a

8” x 6” x 4.5”

10

For additional information please go to our web site @

PUREGAS, LLC
226A Commerce St.
Broomfield, CO 80020
Tel 800-700-8537
Fax 303-465-9294
sales@airdryers.com