SERIES DX | WET/WET DIFFERENTIAL PRESSURE SWITCH FEATURES/BENEFITS • Differential pressure switch that is suitable for most gas and water-based applications allows multiple uses in the most sophisticated designs • Weatherproof housing provides protection in the harsh, wet or dirty environments ensuring switch’s long-service life • Removable terminal block reduces installation time APPLICATIONS • Indicating filter condition • Proof of flow indicator monitoring • Proving flow through a pump • Proving flow through a chiller • Proving flow through a heat pump or AC Unit DESCRIPTION The SERIES DX is a differential pressure switch that makes a contact output based on the differential between two pressure sources. Wetted materials of brass and flouroelastomer are suitable for use with most gases and water based solutions. The switch can be used for low differential pressure indication with set point on a decrease of pressure as low as 1 psid (0.07 bar). Differential set point ranges are available from 2.5 to 75 psid (0.17 to 5.17 bar) on increasing differential pressure and 1.0 to 67 psid (0.07 to 4.62 bar) on decreasing differential pressure. Unit features a high static pressure rating of 200 psig (13.8 bar). Weatherproof, UL type 4X, enclosure for dust laden, outdoor, or wash-down installation environments. Externally adjustable set point, integral mounting flange and a removable electrical terminal block for quick and easy installation. SPECIFICATIONS Service Compatible gases and liquids. Wetted Materials Connection: Brass; Diaphragm: Fluoroelastomer. Temperature Limits 30 to 140°F (-1 to 60°C). Pressure Limits 200 psig (13.8 bar). Continuous single side only pressure should not exceed 1.25 x full differential pressure range. Enclosure Rating Weatherproof UL type 4X (IP65). Repeatability ±2% of full range. Switch Type SPDT snap switch. Electrical Rating 5 A @ 125/250 VAC, 5 A res. @ 30 VDC. Electrical Connection Removable terminal block. Conduit Connection 0.871″ diameter hole for 1/2″ conduit fitting. Process Connection 1/4″ NPT female. Mounting Orientation Ports on horizontal plane, ±10°. Set Point Adjustment External Screw. Housing Materials Body: Aluminum; Housing: Polycarbonate; Cover: 300 SS. Vibration and Shock Set point repeats after 2.5 Gs, 5 to 500 Hz, Set point repeats after a 15 Gs, 10 millisecond duration. Humidity Limit 80% (non-condensing). Pollution Degree 2. Environment Intended for indoor and outdoor use. Weight 1 lb, 3 oz (0.54 kg). Agency Approvals CE, cULus. dwyer-inst.com DWYER INSTRUMENTS, INC. T: 219-879-8000 | F: 219-872-9057 | info@dwyermail.com 800-872-9141 DIMENSIONS HOW TO ORDER DS-DX rev. 1 | 11/17 Use the bold characters from the chart below to construct a product code Model Description A-590 1/2″ conduit plug, watertight Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identified in this publication without notice. Dwyer advises its customers to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current. ACCESSORIES SERIES DX - Wet/wet differential pressure switch CONSTRUCTION W - Weatherproof PROCESS CONNECTION 1 - 1/4″ female NPT WETTED MATERIAL -1 - Brass/fluoroelastomer WIRING DIAGRAM dwyer-inst.com DWYER INSTRUMENTS, INC. T: 219-879-8000 | F: 219-872-9057 | info@dwyermail.com 800-872-9141 DX W -1 1 CIRCUIT -153 - SPDT RANGE -1 - 2.5 to 10 psi -2 – 10 to 25 psi -3 – 25 to 50 psi -4 – 50 to 75 psi OPTIONS -PRESET - Preset set point -ST - Stainless steel tag -153 -1 -ST Next >