Electro-Pneumatic Transducer
Contents
1. 0 User connections should be made to the inlet and outlet ports located in the bottom of the valve body only See Figure 2 2 Install the Nexen EN5O0 in the air line and securely tighten the connections 3 Install the plugs supplied with the Nexen EN50 in all unused ports ELECTRICAL CONNECTIONS Refer to Figure 3 for electrical connections Make air connections to bottom block only FIGURE 2 Black Lead Figure 3 FORM NO L 20313 E 0612 CALIBRATION AND ADJUSTMENT NOTE EN50 is calibrated prior to shipping and normally does not require calibration after delivery If calibration or adjustment is deemed necessary only do so after EN50 has been mounted in its operating position FULL RANGE OPERATION Forward ActTING Mope ADJUSTMENT 1 Turn the Zero Adjustment Screw clockwise to increase pressure and counter clockwise to decrease pressure apply the minimum input signal i e 4 mA or 0 V and adjust the Zero Adjustment Screw for minimum output pressure i e O psi 2 Turn the Span Adjustment Screw clockwise to increase pressure and counter clockwise to decrease pressure apply the maximum input signal i e 20 mA or 10 V and adjust the Span Adjustment Screw for maximum output pressure See SPECIFICATIONS 3 Repeat Zero and Span calibration Steps 1 and 2 until the desired output range is obtained Span Adjustment Reverse Act ns Mope ADJUSTMENT NOTE The input signal to the red and bl2. Liability TO THE EXTENT PERMITTED BY LAW NEXEN SHALL HAVE NO LIABILITY TO BUYER OR ANY OTHER PERSON FOR INCIDENTAL DAMAGES SPECIAL DAMAGES CONSEQUENTIAL DAMAGES OR OTHER DAMAGES OF ANY KIND OR NATURE WHATSOEVER WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHER BREACH OF CONTRACT NEGLIGENCE OR OTHER TORT OR OTHERWISE EVEN IF NEXEN SHALL HAVE BEEN ADVISED OF THE POSSIBILITY OR LIKELIHOOD OF SUCH POTENTIAL LOSS OR DAMAGE For all of the purposes hereof the term consequential damages shall include lost profits penalties delay damages liquidated damages or other damages and liabilities which Buyer shall be obligated to pay or which Buyer may incur based upon related to or arising out of its contracts with its customers or other third parties In no event shall Nexen be liable for any amount of damages in excess of amounts paid by Buyer for Products or services as to which a breach of contract has been determined to exist The parties expressly agree that the price for the Products and the services was determined in consideration of the limitation on damages set forth herein and such limitation has been specifically bargained for and constitutes an agreed allocation of risk which shall survive the determination of any court of competent jurisdiction that any remedy herein fails of its essential purpose Inspection Buyer shall inspect all shipments of Products upon arrival and shall notify Nexen in writing of any shortages or other failures to conf
3. OUBLESHOOTING Failure of the Nexen EN5O could result in output pressure increasing to supply pressure possibly causing personal injury or damage to the equipment Symptom Probable Cause Faulty supply pressure Verify that supply pressure is No Output correct Clogged orifice Clean the orifice pee Inspect and correct all air line Leakage Improper air line connections connections Incorrect Zero and Span adjustment Perform Zero and Span adjustment Lows ppi pressure Verify that supply pressure is Low or improper Span Adjustment PPly P correct Output leakage Inspect and correct all air line connections Check all electrical connections and Improper DC signal verify that DC signal polarity and level is correct Inspect all wires and electrical Loose wires or electrical connections and replace damaged connections wires or repair faulty electrical connections dee Purge liquid from the air supply and Liquid in the air supply use the recommended filter Dirt in the magnet gap Inspect and clean the magnet gap Erratic operation 7 FORM NO L 20313 E 0612 SPECIFICATIONS FUNCTIONAL SPECIFICATIONS EN50 15 EN50 60 EN50 85 EN50 85V 0 15 psig 0 60 psig 0 85 psig 0 85 psig Output Range 0 105 kPa 0 420 kPa 0 595 kPa 0 595 kPa 20 150 psig 65 150 psig 90 150 psig 90 150 psig Supply Pressure 140 1050 kPa 455 1050 kPa 630 1050 kPa 630 1050 kPa 5 psig 4 kPa 1 0 psig 7 kPa 1 5 psig 10 5
4. See CALIBRATION AND ADJUSTMENT SECTION NOTE The Breakaway Tabs on the Mounting Plate may be removed when the Mounting Plate is used with pipe clamps See Figure 1 9 00 228 50 EADS 1 4 NPT Ports 10 32 TAPPED MOUNTING HOLES 2X 4 2 12 70 NPT I A CONDUIT CONNECTOR 0 78 19 81 BREAKAWAY TAB BREAKAWAY TAB MOUNTING PLATE INCLUDES 1 MOUNTING PLATE 2 1 1 2 38 10 PIPE CLAMP 3 10 32 X 5 16 SCREWS FIGURE 1 FORM NO L 20313 E 0612 4 PNEUMATIC CONNECTIONS NOTE Nexen s EN50 requires clean pressure regulated air for maximum performance and long life Your Nexen Distributor carries filters and regulators specifically designed to operate with Nexen products A Pre filter rated at 5 0 micron or less removes large particles from the air supply The Final Filter rated at 0 1 micron or less is used to filter the air before it enters the Nexen EN50 Clean all pipelines to remove dirt and scale before installation If you use a pipe compound when installing the pipe or tube fittings into the Nexen EN50 use a Teflon dope as a sealant 1 Apply a minimum amount of pipe sealant compound to the male threads of the fitting only then start at the third thread back and work away from the end of the fitting to avoid the possibility of contaminating the Nexen EN50 NOTE The inlet and outlet ports are labeled on the side of the EN5
5. ack leads must be reversed when reversing the action 1 Turn the Zero Adjustment Screw clockwise to increase pressure and counter clockwise to decrease pressure apply the minimum input signal i e 4 mA or 0 V and adjust the Zero Adjustment Screw for maximum output pressure See SPECIFICATIONS our Lin 2 Turn the Span Adjustment Screw clockwise to increase pressure and counter clockwise to decrease pressure apply the maximum input signal i e 20 mA or 10 V and adjust the Span Adjustment Screw for minimum output pressure i e O psi Figure 4 3 Repeat Zero and Span calibration Steps 1 and 2 until the desired output range is obtained SPLIT RANGE OPERATION All Nexen EN50s have the capability to be split or set for any output in the range as long as the Output Span is equal to or greater than the minimum Span shown in the SPECIFICATIONS FORM NO L 20313 E 0612 6 MAINTENANCE Cleaning the Orifice is the only maintenance required for the Nexen EN50 NOTE It is not necessary to remove the Nexen EN50 from the air line 1 Shut off the valve supplying air to the Nexen EN50 2 Remove the Orifice from the Nexen EN50 See Figure 5 Orifice 3 Clean the Orifice with alcohol then dry the Orifice with compressed air See Figure 5 NOTE The Orifice must be completely dry before reinstalling it into the Nexen EN50 Figure 5 4 Reinstall the Orifice into the Nexen EN50 See Figure 5 TR
6. kPa 1 5 psig 10 5 kPa Ereet om output 25 psig 175 kPa 25 psig 175 kPa 25 psig 175 kPa 25 psig 175 kPa Minimum Span 12 5 84 25 175 50 350 50 350 Air Consumption SCFH 12 0 0 34 m Hr 13 0 0 36 m Hr 6 0 0 48 m Hr 6 0 0 48 m Hr Flow Rate SCFM 11 SCFM 3 19 m Hr 150 psig 1050 kPa and 9 psig 63kPa output Impedance Input Signal 250 Ohms 256 Ohms 270 Ohms 893 Ohms PERFORMANCE SPECIFICATIONS ENS0 15 EN50 60 EN50 85 EN50 85V lt 1 0 FS 35 psig lt 1 0 FS 65 psig lt 1 0 FS 125 psig lt 1 0 FS 125 psig supply supply supply supply Temperature Range 20 F to 150 F 30 C to 65 C Hysteresis and Repeatability Body and Housing Aluminum Materials of Construction Orifice SapphireTrim Stainless Steel Brass and Zinc Plated Steel PRODUCT NUMBERS EN50 FILTERS Model Product Air Output Signal Product Number Number Number Output 3 Micron and 1 Micron 912142 EN50 15 964229 0 15 psi 4 20 mA Combination Filter FORM NO L 20313 E 0612 o WARRANTY Warranties Nexen warrants that the Products will a be free from any defects in material or workmanship for a period of 12 months from the date of shipment and b will meet and perform in accordance with the specifications in any engineering drawing specifically for the Product that is in Nexen s current product catalogue or that is accessible at the Nexen website or that is attached to this Quotation and that specifica
7. lly refers to this Quotation by its number subject in all cases to any limitations and exclusions set out in the drawing NEXEN MAKES NO OTHER WARRANTY EXPRESS OR IMPLIED AND ALL IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED This warranty applies only if a the Product has been installed used and maintained in accordance with any applicable Nexen installation or maintenance manual for the Product b the alleged defect is not attributable to normal wear and tear c the Product has not been altered misused or used for purposes other than those for which it was intended and d Buyer has given written notice of the alleged defect to Nexen and delivered the allegedly defective Product to Nexen within one year of the date of shipment Exclusive Remedy The exclusive remedy for the Buyer for any breach of any warranties provided in connection with this agreement will be at the election of Nexen a repair or replacement with new serviceably used or reconditioned parts or products or b issuance of credit in the amount of the purchase price paid to Nexen by the Buyer for the Products Agent s Authority Buyer agrees that no agent employee or representative of Nexen has authority to bind Nexen to any affirmation representation or warranty concerning the Products other than those warranties expressly set forth herein Limitation on Nexen s
8. ne gt lt en WEB CONTROL PRODUCTS User Manual 229 Electro Pneumatic Transducer C EN50 1 FORM NO L 20313 E 0612 In accordance with Nexen s established policy of constant product improvement the specifications contained in this manual are subject to change without notice Technical data listed in this manual are based on the latest information available at the time of printing and are also subject to change without notice Technical Support 800 843 7445 651 484 5900 www nexengroup com DANGER Read this manual carefully before installation and operation Follow Nexen s instructions and integrate this unit into your system with care This unit should be installed operated and maintained by qualified personnel ONLY Improper installation can damage your system cause injury or death Comply with all applicable codes This document is the original non translated version Conformity Declaration In accordance with Appendix II B of CE Machinery Directive 2006 42 EC A Declaration of Incorporation of Partly Completed Machinery evaluation for the applicable EU directives was Carried out for this product in accordance with the Machinery Directive The declaration of incorporation is set out in writing in a separate document and can be requested if required This machinery is incomplete and must not be put into service until the machinery into which it is to be incorporated has been declared in conformity
9. orm to these terms and conditions which are reasonably discoverable upon arrival without opening any carton or box in which the Products are contained Such notice shall be sent within 14 days following arrival All notifications shall be accompanied by packing slips inspection reports and other documents necessary to support Buyer s claims In addition to the foregoing obligations in the event that Buyer receives Products that Buyer did not order Buyer shall return the erroneously shipped Products to Nexen within thirty 80 days of the date of the invoice for such Products Nexen will pay reasonable freight charges for the timely return of the erroneously shipped Products and issue a credit to Buyer for the returned Products at the price Buyer paid for them including any shipping expenses that Nexen charged Buyer All shortages overages and nonconformities not reported to Nexen as required by this section will be deemed waived Limitation on Actions No action regardless of form arising out of any transaction to which these terms and conditions are applicable may be brought by the Buyer more than one year after the cause of action has accrued ne gt lt en Nexen Group Inc 800 843 7445 560 Oak Grove Parkway Fax 651 286 1099 Vadnais Heights MN 55127 www nexengroup com ISO 9001 Certified 9 FORM NO L 20313 E 0612
10. with the applicable provisions of the Directive Nexen Group Inc 560 Oak Grove Parkway Vadnais Heights Minnesota 55127 ISO 9001 Certified Copyright 2012 Nexen Group Inc FORM NO L 20313 E 0612 2 TABLE OF CONTENTS Introduction nn nnn nnn nnn nnn nnn nnn nnn nnn nnn nnn nnn nnn nnwn nnn nnn nennnnnannennwanwnamanmannn 4 Installation e nnn aaa 4 Pneumatic Connections mm nn 5 Electrical Connections nn nennen nennen 5 Calibration and Adjustment 6 Maintenance nme mene nee nenne nennen nennen 7 Troubleshooting nn stamina 7 Specifications ann inn nr rrr rm renter 8 Warranty nanan nnn nn nnn nnn nnn nnn nnn nnn 9 3 FORM NO L 20313 E 0612 INTRODUCTION The Nexen EN50 Electro Pneumatic Transducer converts a 4 20 mA DC or 0 10VDC input signal to a pneumatic output pressure The output pressure is linearly proportional to the input signal INSTALLATION Mount the Nexen EN50 vertically with electrical connections above pneumatic ports on a flat surface using the two 10 32 tapped mounting holes located on the Transducer or use the Mounting Plate to mount the Transducer to a flat surface or to a 1 diameter pipe See Figure 1 Mounting EN50 on an incline will require re calibration
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