Pressure Switch Products EPD1S, EPD1H Pressure Switch Differential Pressure ✧ High Reliability EPD1S, EPD1H Series ✧ High Reliability ✧ High Accuracy ✧ High Accuracy ✧ Extremely Versatile ✧ Extremely Versatile ✧ Easy Setpoint ✧ Easy Setpoint Adjustment Adjustment EDPD1S EDPD1H Barksdale’s EPD1S and EPD1H Single Setting Pressure Differential Switches provide an ideal solution when you need a high quality, differen- tial pressure switch with high reliability and accuracy to meet your applica- tion requirements. These snap-action switches are available in stripped or housed versions and are easily adjustable via a set-point screw. Factory set models are also available. The housed version enclosure features a 3-contact terminal strip for easy electrical connection. Exceeding Your Expectations Through Our People, Products and Performance Pressure Switch Products EPD1S, EPD1H Pressure Switch With Barksdale - Pressure’s No Problem As a recognized leader in the manufacture of pressure product solutions, Barksdale pressure switches meet the demanding needs of our cus- tomers. From 29” Hg to 18,000 psi, Barksdale has pressure switches for a variety of applica- tions – from transformers to natural gas com- pressors to beverage dispensers – and more! Barksdale’s EPD1S and EPD1H Series Differential Pressure Switches provide an eco- nomical solution for your pressure sensing needs. Differential pressure switches accurately control pressure differences of 0.22 to 40 PSI and can be factory pre-set upon request. Setpoint adjustment is easily accomplished by turning the slotted adjustment screw. An optional NEMA4 Junction Box (EPD1H Series) provides additional environmental protection as well as Need Something Special? easy electrical conversion via a 3-contact termi- If you have special product requirements, we can nal strip. help. Barksdale specializes in custom design solutions to meet your needs. Our reputation is Differential Pressure Switch Applications built on creating custom products for customers With its economical design and high repeatabili- committed to getting exactly what they need. We ty, Barksdale’s EPD1S and EPD1H Series have design engineers and technical specialists Differential Pressure Switches provide an who are experts in solving your unique pressure accurate and reliable solution for pressure differ- problems. Our technology and resources are at ences up to 40 psi, making them ideal for use in: your disposal. Filtration Systems Air Proving in HVAC Systems Need More Information? Pump & Compressor Monitoring Call us. We are only a phone call away. Fluid Leak Detection Toll-Free: 1-800-835-1060. 2 Pressure Switch Products EPD1S, EPD1H Pressure Switch General Description Adjustment Instructions Electrical Characteristics All models incorporate Underwriters Pressure Differential Turn adjustment screw clockwise to Laboratories, Inc. and CSA Listed single increase pressure difference; pole double throw snap-action switching counterclockwise to decrease pressure elements. difference Performance Characteristics Wiring Code Accuracy ± 5% of the adjustable range Lead Color Switch Normally Closed Blue Common Purple Type SPDT Snap Action Normally Open Red Rating 4 Amps @ 125/250 VAC (Class AA limit switch); 5 Amps @ 125/250 VAC (Class Contact Factory for These Options BB limit switch). Consult sales drawing for Factory pre-set ratings of optional limit switches. Physical Shipping Weight EPD1S Models 1.0 lbs. approximate EPD1H Models 1.5 lbs. approximate Wetted Parts Pressure Fitting Polysulfone, 40% glass filled Diaphragm Dacron reinforced neoprene Enclosure Polysulfone, 40% glass filled Ratings NEMA 4 Pressure Connection 1/8” NPT Female Electrical Connection EPD1S 12” free leads EPD1H 3-pin terminal block Approvals PED (European) Compliant to PED 97/23/EC 3/8 2-3/16 1-5/8 Environmental (9.5) (5.5) (43.0) TYP. SLOT TYP. 3-3/16 (81.0) Temperature Range MOUNTING DIMENSIONS Operating -65° to +165°F (-7° to +74°C) (WHEN APPLICABLE) Storage -40° to +200°F (-40° to +93°C) 1-7/16 3 FREE LEADS (35.7) 24" LONG 2-13/16 (71.4) ADJUSTING SCREW (SLOTTED) 2-13/16 (71.4) INCR INCR DECR DECR 3-5/16 1-7/8 5/8 (84.1) (15.9) (46.8) 1-7/16 (35.7) 1-15/16 LOW LOW (48.4) HIGH LOW PRESSURE PRESSURE 1-3/8 15/16 PORT PORT SEE MOUNTING (34.9) (23.8) DIMENSIONS ABOVE 1-11/16 (42.8) EPD1S 2-5/8 (66.7) 3 Pressure Switch Products EPD1S, EPD1H Pressure Switch Differential Pressure EPD1S, EPD1H Series MOUNTING DIMENSIONS (WHEN APPLICABLE) 4-13/16 (122.2) ADJUSTING SCREW (SLOTTED) 2-5/16 (58.7) INCR INCR DECR DECR 1-7/8 5/8 (15.9) (46.8) 1-7/16 (35.7) 1-15/16 LOW LOW (49.1) LOW HIGH PRESSURE PRESSURE 1-3/8 15/16 PORT PORT SEE MOUNTING (34.9) (23.8) DIMENSIONS ABOVE 1-11/16 (42.8) EPD1H 2-15/16 (74.6) 3211 Fruitland Avenue • Los Angeles, CA 90058 • ☎ 800-835-1060 • Fax: 323-589-3463 • www.barksdale.com See Barksdale’s Standard Conditions of Sale  Specifications are subject to modification at any time  Bulletin #S0085-A 01/05  ©2005  Printed in the U.S.A. 4