Murphy PSB User's Manual
Contents
1. with all rights reserved c 2006 Murphy Industries Inc Printed in U S A 0591124M In order to consistently bring you the highest quality full featured products we reserve the right to change our specifications and designs at any time PSB 9104B page 2 of 22. on label MURPHY gt www fwmurphy com 918 317 4100 Email sales fwmurphycom Installation Instructions Mounting CAUTION Use wrench on shank to tighten or loosen pressure connection DO NOT TWIST CASE which will damage the unit and void the warranty 1 Before installing the PSB switch apply sealant such as Teflon tape to the threads be sure sealant does not block the inlet orifice 2 The PSB can be mounted in horizontal or vertical angles do not mount switch facing down WRONG 3 Locate the unit in place and secure it by tightening the 1 8 27 NPT fitting into the desired location do not overtighten DO NOT TWIST CASE Wiring CAUTION DISCONNECT Electrical power before wiring 1 Switch contacts below are shown with no pressure applied to the PSB switch 2 A spade forked terminal is recommended for all PSB switch connections 3 Complete the wiring operation Closed KC making sure the voltage and Common C current requirements are within Normally the PSB switch electrical Open N O rating see the typical wiring diagram at right In order to consistently bring you the highest quality full featured products we reserve the right to change our specifications and designs at any time MURPHY the Murphy logo are registered and or common law trademarks of Murphy Industries Inc This document including textual matter and illustrations is copyright protected by Murphy Industries Inc
3. Direct Mount Pressure Switch Nk w murPHY Mf FRA MODEL Description The PSB switch is a direct mount switch for critical pressure points It has one limit contact that can be used to activate an alarm actuate indicator lights or shutdown equipment The construction of this instrument is the same as our time proven Swichgage instrument A precision machined brass mounting plate and port captures a high quality stamped beryllium copper diaphragm The single pole double throw SPDT snap switch is operated directly from the diaphragm for quick acting and positive switching Trip point is factory preset according to your specifications Housing is weather sealed to prevent entry of moisture dust etc A glass filled nylon terminal block with quick screw terminal connections gives the PSB switch a real advantage in industrial engine applications The PSB is ideal when reading is not desired but pressure is critical to operational efficiency Intended for use in general purpose non classified areas PSB 9104B Revised 03 06 Catalog Section 05 00 02 0031 Model PSB E Limit Switch for Critical Pressure a Applications e Engine Lubrication e Water pumps e Compressors Oil field systems e Irrigation systems e Construction Equipment e Mobile Equipment e Marine engines Generators Features e Fits all engine applications e SPDT snap switch e Activates indicator lights alarms or s
4. hut down equipment e Time proven SWICHGAGE construction e Easy wiring terminal block e Steel housing specially coated to resist corrosion e Factory preset to your specifications Specifications Housing Plated steel Pressure Connection 1 8 27 NPT Brass Diaphragm Formed beryllium copper heat treated Pulsation Dampener Brass it is removable for cleaning E Operate Alarms or Shutdown Equipment m E SPDT Snap Acting Switch E Fits Most Engine Applications Terminal Block Three 4 40 screws Accuracy Trip point 3 of full scale Switch reset differential 7 of full scale Repeatability of full scale Contact Rating SPDT 3 A 30 VDC inductive Maximum Pressure See Trip Point Chart on reverse side Temperature Range Ambient 40 F 40 C thru 150 F 66 C Process 40 F 40 C thru 250 F 121 C Factory Trip Point Setting See Trip Point Chart on back Pressure Range Specify from 0 400 psi 0 2 76 MPa 0 27 58 bar See Trip Point Chart on reverse side Contact Operates on rising or falling pressure specify Shipping Weight 8 oz 0 25 kgs Shipping Dimensions 3 x 2 3 4 x 2 3 4 in 76 x 70 x 70 mm NOTE No customer replacement parts Products covered by this bulletin comply with EMC Council directive 89 336 EEC regarding electromagnetic compatibility except as noted MURPHY 3 PSB 9104B page 1 of 2 Dimensions 2 1 4 in 2 9 16 in 57 m
5. m 65 mm 1 8 27 NPT NO C NG 2 1 32 in Dia 52 mm Slot head terminal 1 2 in 13 mm screws 4 40 UNC 2A Square wrench flats Trip Point Chart Factory setting psi kPa bar Falling Maximum pressure psi kPa bar Ranges available psi kPa MPa bar 0 15 0 103 0 1 03 3 21 21 30 207 2 07 0 30 0 207 0 2 07 7 48 48 60 414 4 14 0 50 0 345 0 3 45 69 69 100 0 689 0 6 89 0 75 0 517 0 5 17 103 1 03 150 0 1 03 0 10 34 200 0 1 38 0 13 79 0 150 0 1 03 0 10 34 207 2 07 300 0 2 07 0 20 70 10 15 0 100 0 689 0 6 89 20 138 1 38 30 50 400 0 2 76 0 27 60 0 200 0 1 38 0 13 79 345 3 45 0 300 0 2 07 0 20 70 75 517 5 17 500 3 45 34 50 0 400 0 2 76 0 27 60 150 1 03 10 34 500 3 45 34 50 These points will be used if switch trip point is not specified How to Order To order the PSB model use the diagram below PSB __ __ Pressure Range Specify maximum value from chart above Switch Trip Point F Factory set to trip on falling Specify F and the set point value Example PSB 100 F20 R Factory set to trip on rising Specify R and the set point value For units of measure other than psi specify the set point value followed by unit of measure as follows B Bar K kPa MPa M kg cm2 Example PSB 7B 2B Switch set point value will be stated
Download Pdf Manuals
Related Search