Valves & Accessories » System Sensor
Alarm Pressure Switches - EPS10-1 & EPS10-2
EPS10-1 and EPS10-2 Alarm Pressure Switches
Product Overview
- Sensitivity adjustment wheel, no tools required
- Reinforced diaphram resists pressure spikes
- Two conduit entrances provided
- NEMA 4 rated
System Sensor EPS10 Series switches are designed for use in wet, dry, deluge, and preaction automatic sprinkler systems to indicate a discharge from a sprinkler. The EPS10-1 has a single SPDT switch while the EPS10-2 model contains two SPDT switches..
The EPS10 Series features field adjustable pressure sensitivity to provide an alarm response between 4 and 20 psi. It is factory set to respond at 4 – 8 psi on rising pressure. The pressure adjustment wheel requires no special tools and does not affect switch synchronization on the EPS10-2.
Specifications
|
Standard Specifications
|
|
|---|---|
| Maximum Operating Pressure |
250 psi
|
| Differential |
Approximately 3 psi throughout range
|
| Maximum Adjustment Pressure Range |
4 to 20 psi
|
| Factory Setting |
Operates at rising pressure 4 to 8 psi
|
| Pressure Connection |
1/2" NPT male glass reinforced nylon
|
| Switch Contact Ratings |
EPS10-1: One set SPDT (Form C)
EPS10-2: 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 EPS10-1 or EPS10-2 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 factory adjusted to operate at a pressure of 4 – 8 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 to the alarm check valve of a “wet” sprinkler system, into the intermediate chamber of a “dry” system, or to a pre-action or deluge valve. They shall be activated by any flow of water equal to or in excess of the discharge from one sprinkler head. 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. and approved by Factory Mutual.
Cross Section
Ordering Information
| Model Number | Description |
|---|---|
| EPS10-1 |
Alarm Water flow Pressure Switch, One SPDT, 4 –20 PSI
|
| EPS10-2 |
Alarm Water flow Pressure Switch, Two SPDT, 4 –20 PSI
|
| EPSA10-1 |
ULC/Canadian Version
|
| EPSA10-2 |
ULC/Canadian Version
|
| Replacement Parts | Description |
|---|---|
| S07-66-02 |
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: A05-176-06 Last Revised: July 1999 Revision: 491