3825 Ohio Avenue • St. Charles, IL 60174

Phone: 800-SENSOR2 • Fax: 630-377-6495

©2007 System Sensor.

Product specifications subject to change without notice. Visit systemsensor.com for

current product information, including the latest version of this data sheet.

A05-1031-002 • 3/07 • #1800

Ordering Information

Model No.

Pressure Range

EPS10EXP

4 to 20 psi

EPS40EXP

10 to 100 psi

EPS120EXP

10 to 200 psi

Accessories

EPSRK

Replacement Hardware Kit (contains tamper screws, wrenches, and conduit plug

G07-0151-000

O-ring for cover

EPSEXP Specifications

Architectural/Engineering Specifications

Model shall be EPS10EXP or EPS40EXP or EPS120EXP pressure type waterflow switch as manufactured by System Sensor of St. Charles, IL. They shall be installed

on the sprinkler system with connection as shown on the drawings and/or as specified herein. Pressure switches shall be of the bellows activated type. Switches

shall have a maximum service rating of 250 psi and shall be factory adjusted to operate at a pressure as follows: EPS10EXP: 4 to 8 psi, EPS40EXP: 10 to 100 psi,

EPS120EXP: 10 to 200 psi. There shall be two (2) contacts rated at 10.0 A @ 125/250 VAC and 2.5 A @ 6/12/24 VDC. The contractor shall furnish and install, where

indicated on the plans, pressure switches according to appropriate NFPA standards. Switches shall be provided with ½˝ NPT male connection to be connected

into the air supply line on the system side of any shut-off valve. Switches shall provide one (1) knockout type and one (1) open hole for ½˝ conduit fitting

attachment and a ground screw provision for electrical grounding. The switch enclosure shall be weatherproof and carry a NEMA 4 rating when used with

proper electrical fittings and conduit. The cover shall incorporate a tamper-resistant screw. Switches shall be listed by Underwriters Laboratories. It shall be rated

for use in hazardous locations classified as Class I, Division 1, Groups B, C, D; Class II, Division 1, Groups E, F, G; Class III, Division 1.

Standard Specifications

Hazardous Locations

Classifications

Class I, Div 1, Groups B, C, D

Class II, Div 1, Groups E, F, G

Class III, Div 1

Maximum System Pressure

250 psi (max.)

Pressure Connection

½˝ NPT male brass fitting

Contact Ratings

Two sets of SPDT (Form C)

10.0 A, ½ hp @ 125/250 VAC

2.5 A @ 6/12/24 VDC

Overall Dimensions Installed

4.9˝ W × 9.5˝ H

Conduit Entrances

Two openings for ½˝ conduit

Operating Temperature Range

–40°F to 160°F (–40°C to 71°C)

Enclosure Rating

NEMA 4 – suitable for indoor/outdoor use

Shipping Weight

6.2 lbs.

Service Use

Automatic Sprinkler: NFPA-13

National Fire Alarm Code: NFPA-72

Warranty

3 years

Pressure Ratings

Model Number

Maximum Adjustment Factory Setting

Pressure Range

Differential

EPS10EXP

Operates at rising pressure of 4 to 8 psi

4 to 20 psi

Approx. 3 psi throughout range

EPS40EXP

Operates on increase at 50 psi and on decrease at 30 psi

10 to 100 psi

Approx. 3 psi @ 10 psi, 6 psi @ 100 psi

EPS120EXP

Operates on increase at 125 psi and on decrease at 105 psi

10 to 200 psi

Approx. 3 psi @ 10 psi, 9 psi @ 200 psi