Valves & Accessories » System Sensor
Supervisory Pressure Switches - EPS40-1 & EPS40-2
EPS40-1 and EPS40-2 Supervisory Pressure Switches
Product Overview
- Sensitivity adjustment wheel, no special tools required
- Reinforced diaphram resists pressure spikes
- Two conduit entrances provided
- NEMA 4 rated
System Sensor EPS40 Series switches are designed for use in dry pipe systems or pressure tanks and water pressure supplies of automatic water control valves. The EPS40-1 has a single SPDT switch while the EPS40-2 model contains two SPDT switches.
The EPS40 Series features field adjustable pressure sensitivity to provide an alarm response between 10 and 100 psi. All models are factory set for use in a nominal 40 psi system. The EPS40-1 is factory set to respond at 30 psi at decreasing pressure while the EPS40-2 is factory set to respond at 50 psi on rising pressure and 30 psi at decreasing pressure. The pressure adjustment wheel requires no special tools and does not affect switch synchronization on the EPS40-2..
Specifications
|
Standard Specifications
|
|
|---|---|
| Maximum Operating Pressure |
250 psi
|
| Differential |
Approximately 3 psi @ 10 psi, 6 psi @ 100 psi
|
| Maximum Adjustment Pressure Range |
10 to 100 psi
|
| Factory Setting |
EPS40-1 operates at decreasing pressure at 30 psi
EPS40-2 operates at increasing pressure at 50 psi and decreasing pressure at 30 psi |
| Pressure Connection |
1/2" NPT male
|
| Switch Contact Ratings |
EPS40-1: One set SPDT (Form C)
EPS40-2: Two sets SPDT (Form C) 10.0 A, 1/2 HP @ 125/250 VAC 2.5 A @ 6/12/24 VDC |
| Dimensions |
5.12" H x 3.325" W x 4.250" L
(13.0 cm x 8.4 cm x 10.8 cm) |
| Operating Temperature Range: |
Indoor or outdoor use
–40°F to 160 °F ( –40°C to 71°C) |
| Cover Tamper Switch |
UL Models: Optional P/N 546-8000
ULC Models: Factory Installed |
| Enclosure |
Rated UL 4x, NEMA 4 for indoor or outdoor use
|
| Shipping Weight |
1.2 lbs. (.54 Kg)
|
| Service Use |
Automatic Sprinkler: NFPA 13
One or Two Family Dwelling: NFPA 13D Residential Occupancies up to 4 Stories: NFPA 13R National Fire Alarm Code: NFPA 72 |
| Warranty |
3 years
|
Engineering Specifications
Model shall be an EPS40-1 or EPS40-2 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 pressure rating of 250 psi and shall be adjustable from 10 - 100 psi. There shall be one (1) or two (2) SPDT contacts rated at 10.0 Amp @ 125/250 VAC and 2.5 Amp @ 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 a 1⁄2" NPT male pressure connection to be connected into the air supply line on the system side of any shut-off valve. Switches shall provide 1 knockout type and 1 open hole for 1⁄2" conduit fitting attachment and a ground screw provision for electrical grounding.
The switch enclosure shall be weatherproof and carry a UL 4x/NEMA 4 rating when used with proper electrical fittings and conduit. The cover shall incorporate tamper-resistant screws.
The unit shall be listed by Underwriters Laboratories, Inc., the California State Fire Marshal, MEA, and approved by Factory Mutual.
Cross Section
Ordering Information
| Model Number | Description |
|---|---|
| EPS40-1 |
Low Pressure Supervisory Switch, One SPDT, 10-100 PSI
|
| EPS40-2 |
High/Low Pressure Supervisory Switch, Two SPDT, 10-100 PSI
|
| EPSA40-1 |
ULC/Canadian Version
|
| EPSA40-2 |
ULC/Canadian Version
|
| Replacement Parts | Description |
|---|---|
| S07-66-XX |
Replacement Tamper Screws for Cover of EPS
|
| WFDW |
Replacement Tamper Proof Wrench for Cover of EPS
|
| 546-8000 |
Cover Tamper Switch for EPS Series
|
Related Products
Globe Product Warranty
Globe agrees to repair or replace any of its own manufactured products found to be defective in material or workmanship for a period of one year from date of shipment.
For specific details of our warranty please refer to Price List Terms and Conditions of Sale (Our Price List).
Bulletin: A05-177-05 Last Revised: November 1999 Revision: 566