Metal airflow switch with cylindrical probe and adjustable set screw.

RH-3 | Columbus Electric | Pressure Components

Differential Pressure Switch, Adjustable, 0.05-12.00” WC, Automatic Reset, Compression Connector on Both Sides

Brand:Columbus Electric

MPN:RH-3

SKU:RH-3

List Price:

$206.00

Today's Price:

$107.12

product datasheet

catalog page

product specifications

Direction

Uni-Directional

Measurement

Inches of Water Column

Media Compatibility

Air

Connection Size

1/4 in

Type

Adjustable

Contact Type

SPDT

Connection

OD Tubing

Housing Material

Metallic

Contact Rating

15 A

Override

Automatic

Set Point Range

0.05 - 12 in

Power Required

Switch

Enclosure Rating

NEMA 1

Approvals

UL,CSA

product series specifications

Relay Type: SPDT

Relay Rating: 0.5A @ 24V AC/DC, 15 A resistive @ 120-277VAC

Motor Rating: 1/4 HP @125 VAC, 1/2HP @ 250 VAC

Calibration: RH-3-2 Adjustable, 0.05 to 2.0" WC

Differential:

RH-3: Fixed progressive, 0.05" to 2.0" WC over SP range

RH-3-2: Fixed progressive, 0.02" to 0.8" WC over SP range

Reset: Automatic reset by differential

Sensor Type: Silicone Diaphragm

Operating Pressure Range: 0.05 to (12" WC or 2.0" WC) (See ordering)

Overpressure: (Burst) 13.85"WC (3.45kPa)

Max Operating Pressure: (Proof) 13.85"WC (3.45kPa)

Operating Temperature: -40° to 180°F (-40° to 82°C)

Operating Humidity: 10 to 90% Non-condensing

Media Compatibility: Inert dry air

Process Connection: 1/4" compression

Wiring Terminations: 3 Terminals

Mounting Vertical: 2 tabs w/Holes 0.19" (0.48cm)

Enclosure Rating: NEMA 1

Dimensions: 4"W x 6.1"H x 1.69"D, (10.2 x 15.5 x 4.3 cm)

Weight: 2.0 lb (0.9 Kg)

Approvals: UL listed, file #MH10196, CSA

Warranty: 2 year

more information & related documents

Series Description

The RH-3 Series Differential Pressure Switches monitor low-air pressure, vacuum, or differentials of air pressure. These switches are commonly used to prove blower operation, to sense dirty filters, and to monitor pressure drop across coils. Both the Model RH-3 switch and Model RH-3-2 switch are shipped with 1/4 in compression fittings, suitable for use with 1/4 in OD copper or plastic tubing, and a 12 in (30.5 cm) length of 1/4 in plastic tubing.

Kele Description

DIFF PRESS SW, ADJUST, 0.05-12 INCHES WC

Manufacturer

Columbus Electric