Features

Superior resolution

Long life

Easy setpoint adjustment

Ideal for pressure or vacuum applications

NEMA 1, 3 & 4

Applications

Medical equipment

Pump & compressor monitoring

Air proving in HVAC systems

Irrigation systems

Engine monitoring

Machine tools

Water & sewage treatment facilities

Pulp & Paper Mills

Metal working

Food & beverage

Steel mills

General Specifications*

Accuracy: ± 2% of the adjustable range

Temperature Range:

Operating: -20° to +165°F (-29 to +74°C)

Switch:

Type:

Rating:

Single pole double throw (SPDT) snap

action; single circuit

Class H limit switch: 10 amps @ 125/250

VAC; 3 amps @ 480 VAC; 0.5 amps @ 24

VDC (standard).

Wetted Parts:

Process Fitting:

Seals & Diaphragms:

Enclosure:

Anodized aluminum (standard)

Buna-N (standard)

Anodized aluminum (housed models)

Adjustment Setpoint:

Positive Pressure:

Vacuum:

Adjustable Deadband

(Optional):

Turn self locking adjustment nut clockwise to

increase setpoint; counterclockwise to decrease

setpoint.

Turn self locking adjustment nut

counterclockwise to increase setpoint,

clockwise to decrease setpoint (towards 30”

Hg).

Turn small self locking adjustment nut on limit

switch counterclockwise to increase differential.

As the differential is increased, the setpoint is

also increased. Balance one adjustment against

the other to obtain the desired setpoint.

Electrical Connection:

Stripped Models:

Housed models:

Screw terminals

Screw terminals via 1/2” NPT female

conduit connection

Options: -Plastic cover (stripped models only)

-NEMA 4X enclosure (housed models only)

-Manual reset

-Adjustable deadband

Enclosure Ratings:

Stripped models:

Housed models:

NEMA 1

NEMA 4 & IP65

Shipping Weight:

Housed models:

Stripped models:

1.5 lbs. approx.

0.75 lbs. approx.

Pressure Connection:

Stripped models:

Housed models:

1/2” NPT external with 1/8” NPT internal

1/4” NPT female

Wiring Diagram

Approvals:

UL:

CSA:

PED (European):

Stripped models: UL recognized

component (UR)

Housed models: UL listed. File No. E42816

All models and modifications shown are

CSA listed under Guide 380-W-1.16, Class

3231, File LR22355

Compliant to PED 97/23/EC