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China Good Price Supervisory Pressure Switches UL FM

Basic Info

Model No.:  EPS120-1/120-2

Product Description

Model NO.: EPS120-1/120-2 Number of Switch: Multi Control Switch Usage: Control Switch Explosion-proof Type: Flameproof Contact Type: Type c Contact Brand: System Sensor Maximum Operating Pressure: 300 Psi Maximum Adjustment Pressure Range: 10 to 200 Psi Differential: Approximately 3 Psi @ 10 Psi, 9 Psi @ 200 Psi Dimensions: 5.120 H * 3.325W * 4.250 L (13.0 Cm*8.4 Cm*10.8cm) Shipping Weight: 1.2 Lbs. (.54 Kg) Transport Package: as Customer Require Origin: China Type: Electronic Structure: Power Built-in Type Application: Home, Commercial, Industrial, Vehicles Contact: Normally Close Detection Method: Retro-reflective Mode Certification: UL, UL Vds Pressure Connection: 1/2 NPT Male Operating Temperature Range: Indoor or Outdoor Use -40f to 160f (-40c to 71c Enclosure: Rated UL 4X, NEMA 4 for Indoor or Outdoor Use Cover Tamper Switch: UL Models: Optional P/N 546-8000 Ulc Models: Facto Trademark: System Sensor Specification: 1/2 inch NPT China Good Price Supervisory Pressure Switches UL FM

EPS120-1 and
EPS120-2 Supervisory
Pressure Switches

General     Description

System Sensor EPS120 Series switches are designed to supervise system air pressure in pipes or pressure tanks, as well as water or air pressure supplies of automatic water control valves

The EPS120-1 has a single SPDT switch. The EPS120-2 model contains two SPDT switches. The EPS120 Series features fieldadjustable pressure sensitivity to provide an alarm response between 10 and 200 psi. All models are factory set for use in a nominal 115 psi system. The EPS120-1 is factory set to respond at 105 psi at decreasing pressure. The EPS120-2 is factory set to respond at 125 psi on rising pressure and 105 psi on decreasing pressure. The pressure adjustment wheel requires no special tools and does not affect switch synchronization on the EPS120-2.

• Pressure adjustment wheel, no special tools required
• Field-adjustable pressure sensitivity
• Factory set for use in a nominal 115 psi system
• Reinforced diaphragm resists pressure spikes
• Two conduit entrances provided
• NEMA 4 rated

Model shall be an EPS120-1 or EPS120-2 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 300 psi and shall be adjustable from 10-200 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 ½˝ 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 ½˝ 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 tamperresistant screws. The unit shall be listed by Underwriters Laboratories, Inc. and Underwriters Laboratories of Canada, Inc. and approved by Factory Mutual.

Maximum Operating Pressure                             300 psi  
Pressure Connection                                         ½" NPT male
Maximum Adjustment Pressure Range                    10 to 200 psi
Operating Temperature Range                             Indoor or outdoor use −40°F to 160°F (−40°C to 71°C)  
Factory Setting                                                 EPS120-1 operates at decreasing pressure at 105 psi; EPS120-2 operates at increasing pressure at 125 psi and decreasing pressure at 105 psi
Switch Contact Ratings                                       EPS120-1: One set SPDT (Form C); EPS120-2: Two sets SPDT (Form C) 10.0 A, ½ HP @ 125/250 VAC 2.5 A @ 6/12/24 VDC
Differential                                                      Approximately 3 psi @ 10 psi, 9 psi @ 200 psi Enclosure                                                       Rated UL 4x, NEMA 4 for indoor or outdoor use Dimensions                                                     5.120˝ H × 3.325˝ W × 4.250˝ L (13.0 cm × 8.4 cm × 10.8 cm)
Cover Tamper Switch                                         UL Models: Optional P/N 546-8000 ULC Models: Factory Installed
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
Shipping                                                         Weight 1.2 lbs. (.54 Kg)
Warranty                                                         3 years


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