System Sensor EPS120-1 EPS120-2

EPS120 1 and Supervisory Switches Sensor EPS120 Series switches are designed to system air pressure in pipes or pressure tanks well as water or air pressure supplies of automatic water valves 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 EPS120 1 has a single SPDT switch The EPS120 2 model two SPDT switches The EPS120 Series features field pressure sensitivity to provide an alarm response between and 200 psi All models are factory set for use in a nominal 115 system The EPS120 1 is factory set to respond at 105 psi at pressure The EPS120 2 is factory set to respond at 125 on rising pressure and 105 psi on decreasing pressure The adjustment wheel requires no special tools and does not switch synchronization on the EPS120 2 Listings Series Specifications Specifications shall be an EPS120 1 or EPS120 2 pressure type waterflow switch as manufactured by System Sensor of St Charles IL They shall installed on the sprinkler system with connection as shown on the drawings and or as specified herein Pressure switches shall be of the type Switches shall have a maximum service pressure rating of 300 psi and shall be adjustable from 10 psi There 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 where indicated on the plans pressure switches according to appropriate NFPA standards Switches shall be provided with a NPT pressure connection to be connected into the air supply line on the system side of any shut off valve Switches shall provide 1 knockout and 1 open hole for conduit fitting attachment and a ground screw provision for electrical grounding The switch enclosure shall be and carry a UL 4x NEMA 4 rating when used with proper electrical fittings and conduit The cover shall incorporate tamper screws The unit shall be listed by Underwriters Laboratories Inc and Underwriters Laboratories of Canada Inc and approved by Mutual Specifications Operating Pressure Connection Adjustment Pressure Range Temperature Range Setting psi NPT male to 200 psi or outdoor use to 160 to 71 operates at decreasing pressure at 105 psi EPS120 2 operates at increasing at 125 psi and decreasing pressure at 105 psi One set SPDT Form C EPS120 2 Two sets SPDT Form C A HP 125 250 VAC 2.5 A 6 12 24 VDC 3 psi 10 psi 9 psi 200 psi UL 4x NEMA 4 for indoor or outdoor use H 3.325 W 4.250 L 13.0 cm 8.4 cm 10.8 cm Models Optional P N 546 8000 ULC Models Factory Installed Sprinkler NFPA 13 One or Two Family Dwelling NFPA 13D Occupancies up to 4 Stories NFPA 13R National Fire Alarm Code NFPA 72 lbs 54 Kg Weight years Switch Basic Dimensions Tamper Switch Use Sprinkler Applications Contact Ratings Connections SWITCH 2 ADJUSTMENT NPT EPS120 1 EPS120 2 AT 115 P S I NORMAL AT 105 P S I LOW TRIP PT AT 105 P S I LOW TRIP PT AT 115 P S I NORMAL 1 AT 125 P S I HIGH TRIP PT TO SUPERVISORY OF FIRE ALARM PANEL TO ALARM CIRCUIT FIRE ALARM PANEL FOR Y ALARM OFF SYSTEM LINE Y Y ALARM OFF SYSTEM Information Model No Parts Model No supervisory switch one SPDT 10 PSI supervisory switch two SPDT 10 PSI tamper screws for cover of EPS tamper proof wrench for cover of EPS tamper switch for EPS Series Ohio Avenue St Charles IL 60174 800 SENSOR2 Fax 630 377 6495 specifications subject to change without notice Visit systemsensor com current product information including the latest version of this data sheet System Sensor 2 15