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1. 5 17 6 0 0 41 Approximate Deadbands www dwyer inst com e mail info dwyer inst com UNPACKING Remove the DX from the shipping carton and inspect for damage If damage is found notify the carrier immediately INSTALLATION A CAUTION Insure that the process fluid is compatible with the wetted materials A CAUTION Do not exceed the maximum device ratings ACAUTION Insure that the system is not pressurized before installing or removing this device or other objects from the system The DX is to be mounted with the pressure connections horizontal 10 For pipe mounting mount the unit from the pressure connections to the pipe Make sure the piping is properly supported to handle the weight of the pressure switch For surface mounting mount the unit to the selected surface using the mounting ear holes provided using two 6 or 8 screws See the Figure 2 for mounting hole spacing Make sure that connections are connected to the proper port The high pressure port is marked with the sign and is on the left side of the unit with the label side facing you The low pressure port is marked by the sign and is the right side of the unit Piping or tubing should always be turned into the pressure port do not turn the pressure switch When installing the piping or tubing into the switch always use a wrench on the flats of the pressure connection Use pipe thread sealant tape or other suitable pipe joint compo2. 64 63 50 3 4 46 05 13 97 15 64 19 05 BES 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 Enclosure Rating Weatherproof UL type 4X IP65 Repeatability 2 of full range Switch Type SPDT snap switch Electrical Rating 5A 125 250 VAC 5A 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 Continuous single side only pressure should not exceed 1 25 x full differential range 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 Altitude Limit 6560 ft 2000 m Humidity Limit 80 non condensing Pollution Degree 2 Environment Intended for indoor and outdoor use Weight 1 Ib 3 oz 0 54 kg Agency Approvals CE UL Fixed Deadband psid bar At Low Set Point At High Set Point 2 5 0 17 3 5 0 24 6 0 0 41 8 0 0 55 Adjustable Range psid bar 2 5 to 10 0 17 to 0 69 1 5 0 10 10 to 25 0 69 to 1 72 2 5 0 17 25 to 50 1 72 to 3 45 3 5 0 24 50 to 75 3 46 to
3. Bulletin IN DX Series DX Differential Pressure Switch ad we wsm m 08 Tua emear n mipi rors The Series DX is a pressure switch that makes a contact output based on the differential pressure between two pressure sources Unit incorporates a SPDT snap switch in a weatherproof type 4X enclosure Series DX features low differential pressure set points with high single pressure limit OPERATING PRINCIPLE The DX uses opposing diaphragms to sense the high and low pressure A pivot mechanism transfers the difference of the two pressures to the switch Example DXW 11 153 2 M Series Differential Pressure Switch Weatherproof Wetted Materials Brass Fluoroelastomer Process Connection 1 4 NPT Circuit Options SPDT Range 2 5 to 10 psi 10 to 25 psi 25 to 50 psi 50 to 75 psi Stainless Steel tag Construction Options SST PRESET Preset set point DWYER INSTRUMENTS INC P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A Phone 219 879 8000 Fax 219 872 9057 Specifications Installation and Operating Instructions 1 13 64 2 55 64 za 72 59 las 45 85 raa 36 30 1 123 A 1 4 29 64 113 03 g 1 11 32 Duvit TOATRUENNS me cE 47164 5 e i 04 18 80 i Gj 4 3 64 oy oa Nhe o _ laza LA 7 18856 14 10 t 1 13 16 18 54 35
4. nduit breather drain in a separate conduit body to prevent buildup of moisture NOTICE For weatherproof applications install directly to conduit or use the optional cable gland accessory SETPOINT ADJUSTMENT The set point is adjusted with a standard slotted head screw driver 1 Remove rubber plug over set point adjustment screw located on the right side of the unit with the label side facing you 2 Insert the screw driver to turn the set point adjustment 3 A clockwise rotation is an increase in differential pressure set point and a counterclockwise rotation is a decrease in differential pressure set point The set point screw can be turned too far as to fall out do not turn the screw to the point that there are no longer any female threads visible in the switch body 4 Using a pressure source and pressure gauge adjust the set point screw to the set point desired while monitoring the contact output 5 Once desired set point is achieved replace set point adjustment cover NOTICE NOTICE Design a fail safe system that takes into consideration the possibility of switch failure power failure and operator error Explanation of Symbols Publication Description IEC 50417 5031 Direct current IEC 50417 5032 Alternating current IEC 50417 5019 Protective conductor terminal MAINTENANCE amp REPAIR Inspect and clean switch with water or damp cloth as needed Disassembly or modifications made by
5. the user will void the warranty and could impair the continued safety of the product If repair is required obtain a Return Goods Authorization RGA number and send the unit freight prepaid to the address below Please include a detailed description of the problem and conditions under which the problem was encountered Dwyer Instruments Inc Attn Repair Department 102 Indiana Hwy 212 Michigan City IN 46360 Copyright 2010 Dwyer Instruments Inc Printed in U S A 10 10 FR M3 443822 00 DWYER INSTRUMENTS INC P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A Phone 219 879 8000 Fax 219 872 9057 www dwyer inst com e mail info dwyer inst com
6. und when making the pressure connection g 1 11 32 _ 34 04 y g 9 16 34 04 9 0 14 101 2X l 35 64 __ 1713 32 1 47 64 13 97 85 56 ny ue 63 50 15 64 6 00 Figure 2 Mounting Hole Dimensions ELECTRICAL CONNECTION A SPDT snap action switch is provided The output logic is shown in Table 1 Condition NO Differential Pressure Closed Above Set Point Differential Pressure Open Below Set Point Table 1 Switch Action Nc NO COM SS z 88 VIEW OF TERMINAL BLOCK INSIDE SWITCH HOUSING Figure 2 Wiring Diagram AWARNING Power must be off while wiring connections are being made NOTICE Installation must be made in accordance with local codes and regulations Electrical connections are made to the removable terminal block inside the enclosure Remove the terminal block from the circuit board for wiring if desired Feed stripped and tinned leads through the conduit opening and connect them as shown in Figure 2 250V 60C 14 to 24 AWG 2 5 to 25 mm wiring with PVC or equivalent insulation with 94 VO or FV 0 flammability rating is recommended for the switch Replace terminal block after wiring The DX provides one 0 871 diameter hole for 1 2 conduit fitting The conduit connections must be made such that condensation is not allowed to enter the sensor housing If necessary install a co
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