Installation for LS200, LS200N LS200NDVOR Series and L1100 Liquid Level Switches GENERAL INFORMATION CAUTION he e c la k n te w t st eb Su ve si p rs te er io fo s n r ed WARNING LS200 Series parts are not interchangable with other liquid level products. Damage caused by the above mentioned is not covered by our Limited Warranty. BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT ✔ ✔ ✔ ✔ ✔ Disconnect all electrical power to the machine. Make sure the machine cannot operate during installation. Follow all safety warnings of the machine manufacturer. Read and follow all installation instructions. OBSERVE all pressure and electrical ratings and requirements for the devices and the operating environment. ✔ BE SURE all pressure HAS BEEN REMOVED from the vessel before opening any pressure connections. Description All Models Body: Nickel plated steel; Optional 316 stainless steel (meets NACE standard MR-01-75 for direct exposure to H2S service Float: 304 Stainless steel to operate in 0.5 specific gravity or heavier fluids (LS200 Series models only) Pressure Rating: 2000 psig (13.8 MPa) [138 bar] (LS200 models only) O-Ring: Viton LS200 Process Connection: 2”NPT Temperature Rating: -20 to 300°F (-29 to 149°C) - Optional -20 to 400°F (-29 to 204°C): (not available with DPDT). Electrical: SPDT std. (see “Electrical” section for configuration/rating). Wire: 18 AWG x 36 in. (1.0 mm2 x 916 mm) LS200NDVOR Process Connection: 2”NPT DVO Valve: 3 way N.C. w/manual operator; all connections 1/8” NPT (minimum 30 psig required) Filter/Pressure Regulator Set: - Regulator: 0 to75 psig (0 to 517 kPa) [0 to 5.17 bar] range - Maximum input pressure: 300 psig (2.07 MPa) [20.7 bar] LS200 Liquid Level Switches with 2” NPT mounting are float activated to operate an electrical SPDT snap switch (optional DPDT on some models) for alarm or shutdown of an engine or electric motor. The LS200 screws directly into the vessel wall and can be used with a weld collar or external float chamber. L1100 models (1-1/2” NPT) are available. LS200NDVOR is a float-activated, pneumatic-vent level device oc um used to operate dump valves or similar devices. The LS200NDVOR provides a 2” NPT mounting with a pneumatic snap action output for interfacing with pneumatic devices such as our DVU scrubber dump valve or with other pneumatic instrumentation. This unit is supplied with a pressure regulator and filter and Murphy 20BPG pressure gage which is recommended for improved system life and trouble-free operation. LS200NDVO D C Pneumatic level switch with snap action Dump Valve Operator (DVO) without the Pressure Regulator for those applications where the system provides a filter regulator for “instrument quality” air or gas as the control medium. LS200N (00-02-0563) ed Please read the following instructions before installing. A visual inspection for damage during shipping is recommended before mounting. LS-04006N Effective 02-04 Section 15 LS200NDVO Process Connection: 2”NPT DVO Valve: 3 way N.C. w/ manual operator; all connections 1/8” NPT LS200N Process Connection: 2”NPT Vent Valve: 2 way N.C. snap action w/ 1/16 in. (2 mm) orifice and Viton seat; Inlet: 1/8” NPT ; Outlet: 3/8” NPT L1100 Process Connection: 1-1/2” NPT Pressure Rating: 1500 psig (10.3 MPa) [103.2 bar] Float: BUOYGLASTM operates to 0.5 specific gravity; Optional stainless steel to operate in 0.65 specific gravity Electrical: SPDT switch LS200N, LS200NDVO and LS200NDVOR with Dump Valve Operator, Pressure Regulator and Gage 20BPG-75 Supply Pressure Gage Exhaust Filter/ Regulator Nipple 1/8 NPT x 1/8 NPT Pneumatic level switch without the DVO and filter regulator. TOP VIEW A LS200 DVO B 2.5 in. (64 mm) Hex ø2.19 in. (56 mm) A B C D E L1100 11 in. (279 mm) 3.50in. (189mm) 1.56 in. (40 mm) 3.4 in. (71 mm) 1-1/2 NPT 3.53 in. (90 mm) Signal out C D 1/2 NPT LS200 10.16 in. (258 mm) 3.44 in. (87 mm) 1.75 in. (44 mm) 2.80 in. (71 mm) 2 NPT Manual Valve Operator E ø2.19 in. (56 mm) 4.59 in. (117 mm) 3.30 in. (84 mm) min. ø1.75 in. clearance required for (44 mm) float movement. LS200N 3.63 in. (92 mm) 3/8 NPT exhaust 2" 11-1/2 NPT 3.73 in. (95 mm) 8.49 in. (216 mm) LS-04006N page 1 of 4 Regulator/Gage Assembly 3.44 in. (87 mm) PRESSURE VESSEL INSTALLATION: LS200, LS200N and L1100 um oc ed Pneumatic Models RECOMMENDED 1. All pneumatic models Filter/Regulator operate on the vent Tank Dump Valve principle. Operator Assembly Pneumatic p/n 15010216 The pneumatic signal Signal source must be clean and dry “Instrument Quality”air or natural MURPHYGAGE® gas. The input pneumatic signal LS200N must be regulated between 30 and 70 psi (207-483 kPa) [2 -4.83 bar]. If produced gas is used as the signal source, it should be taken after gas passes through the final scrubber. A suitable filter must be positioned before the LS200NDVO to prevent liquids and/or particulates from entering the dump valve operator. NOTE: Check filter periodically for wear and tear and elements that hamper the flow of the pneumatic signal. 2. All pressure connections must be tight and maintained tight so as not to leak air/gas. 3. Valve seat adjustment can be made if air/gas begins to leak. Care should be taken when adjusting as only slight movement is necessary to stop the leakage; excessive force will bind the seating mechanism. See the instruction below for adjustment. FLOAT SHOWN IN THE UP POSITION C D 2. A tee and bleed valve are typically installed at the bottom of the lower 1 inch pipe riser to allow draining of the float chamber for servicing or replacement. NOTE: A typical installation with Blocking and Bleed valves is shown at right. Float Chamber 3. Install the LS200 or LS200N/NDVO/NDVOR Tank Block in the 2” NPT connection of Valves the float chamber. BE SURE float travel Level is not restricted and that Switch the float is tight onto Tee the float shaft. 4. To complete installation and Bleed Valve wiring, follow the instructions for mounting directly into wall of the vessel and for wiring. he e c la k n te w t st eb Su ve si p rs te er io fo s n r ed Direct Installation into the Wall of the Pressure Vessel 1. Determine that the float travel is not obstructed by the coupling in the vessel wall, internal baffles, etc. Tank Wall LS200 Do NOT use more than one float shaft extension P/N 15000478. 2. BE SURE that the float and extension are tight. Level 3. Before installing the level Switch switch, use of a pipe thread sealant is recommended. Screw the unit directly into the threaded connection in the wall of the pressure vessel. 4. For LS200 and L1100 be sure that the electrical connection is positioned at the bottom. 5. For LS200N the 1/8” NPT pneumatic connection should be on top (the 3/8” NPT vent connection should be on the bottom) for service on a “Trip on Rising” application. The LS200N can be rotated 180° for service on a “Trip on Falling” application. 6. Make the electrical wiring connections according to appropriate wiring diagrams for the alarm or shutdown system to be used. The electrical connection is 1/2”-14 NPT. 7. BE SURE all electrical connections are insulated and the cover is fully installed before reconnecting electrical power. 8. BE SURE all pressure connections are tight before pressurizing the system. Installation with a Weld Collar 1. The weld collar, P/N 15050375, must be welded into the wall of the pressure vessel according to code standards and good Tank Wall welding practices. 2. Follow above instructions Weld Collar for installation directly into the wall of the pressure vessel. 3. NOTE: Weld collar 15050375 can be used LS200 ONLY with model LS200. Installation Using External Float Chamber 15051098 1. Install the float chamber 15051098 on the outside wall of the Manual Valve Operator SEAT ACTUATOR ARM SCREW CAUTION: USE “NON SPARKING TOOLS. pressure vessel using 1” NPT piping or use the mounting surface with a bracket. Position the 2” NPT threaded connection at the height where you want the level switch to operate. The 2” NPT threaded connection must be positioned away from the tank wall. CAUTION: Avoid excessive teflon tape as excess will inhibit proper operation. FLOAT SHOWN IN THE DOWN POSITION Manual Valve Operator SEAT ACTUATOR ARM SCREW LS-04006N page 2 of 4 TRIP CAM (non adjustable) CAM DRIVER (non adjustable) ADJUSTABLE ORIFICE Turn left until air leakage stops. CAUTION: Only slight adjustment (1/32 turn is needed) excessive adjustment will lockup mechanism. After adjusting, make sure float moves without obstruction. TRIP CAM (non adjustable) CAM DRIVER (non adjustable) REPLACING AND INSTALLING THE DVO ASSEMBLY Replacing and Installing the DVO Assembly For Models LS200NDVO & LS200NDVOR NOTE: Clean, dry instrument quality gas should be used. Use of filters will improve service life and reliability. he e c la k n te w t st eb Su ve si p rs te er io fo s n r ed Tools Needed: Strap or pipe wrench, 9/16" Hex wrench, tubing cutters and benders and the appropriate tools for the fittings. 1. Block off and bleed the instrument gas pressure supply to the LS200NDVO/DVOR. 2. Remove the tubing between the LS200NDVO/DVOR and the scrubber dump valve, and remove the supply gas tubing (regulator [-R-] if used). 3. Remove the LS200NDVO/DVOR from the vessel (optional). 4. If the LS200NDVO/DVOR was removed from the vessel, mount it in a suitable vise on a work bench (if possible). 5. Using the proper tools, disconnect the Inlet, Outlet, and Exhaust fittings from the existing DVO (see fig. 1). You will re-connect these to the new DVO in a later step. NOTE: The following steps must be done with the DVO in the upright position (on top of the LS200NDVO). 6. Remove the LS200NDVO/DVOR cover. The use of a strap wrench or a pipe wrench may be needed. 7. With a 9/16" hex wrench loosen the hexhead bolt on top of the DVO and remove the existing DVO from the body. 8. Ensure that the adjustable orifice is fully raised up to ensure when inserted into the body that the actuator arm is not bent. See fig 2. 9. Insert the new DVO onto the body. The DVO manual valve operator must face away from the vessel. ed When replacing/installing the DVO assembly, tubing and fitting modifications may be required. We suggest removing the LS200NDVO/DVOR from the vessel. Relieve pressure from the vessel or use block valves before removing the LS200NDVO/DVOR. Figure 1 Outlet CAUTION: LS200 series parts are not interchangeable with the L1200 Series. Inlet Exhaust Figure 2 Adjustable Orifice um CAUTION: Ensure that the actuator arm is not bent during assembly. Figure 3 Manual Valve Operator C D oc 10. With the DVO aligned over the hex on the LS200NDVO body, tighten the valve using the 9/16" hex wrench. You may need to hold the DVO while tightening to keep it from rotating. See fig 3. 11. The pneumatic input signal should be regulated between 30 and 70 psi for proper setting of the adjustable orifice. With the float in the down position adjust the adjustable orifice down until it touches the seat (see fig 4). If the DVO is still leaking make slight adjustments (1/32 turn). Excessive adjustments will lock up mechanisms. After adjusting make sure float moves freely up and down. 12. Replace the LS200NDVO/DVOR cover. 13. Using the appropriate tools re-install the Inlet, Outlet, and Exhaust fittings to the new DVO (see fig 1). Thread sealant is recommended but care should be used to not allow excess to enter valve. 14. If the LS200NDVO/DVOR was removed from the vessel reinstall it at this time. Thread sealant is recommended. 15. Connect to the Inlet, Outlet, and Exhaust fittings. According to installation drawings. CAUTION : LS200 series parts are not interchangeable with the L1200 Series. Orifice Adjustment Figure 4 Cam (Not Adjustable) Actuator Arm (Not Adjustable) LS-04006N page 3 of 4 REPLACEMENT PARTS ELECTRICAL Order by part number designation. LS200* 15000479: Stainless Steel float for LS200 15000124: SPDT snap switch assembly 15010268: LS200 counter balance assembly 15000478: Float shaft extension LS200N 15000479: Stainless Steel float for LS200N 15051133: Valve stem 15010266: Counter balance assembly LS200NDVO and LS200NDVOR 55050621: Regulator only 05706499: 20BPG-D-75 Pressure MURPHYGAGE® 0-75 psi (517 kPa) [5.17 bar] 15010267: Assembly (LS200N DVO Assembly) L1100 15000893: BUOYGLASTM float 15000937: Stainless Steel float 15000124: SPDT snap switch assembly 15000213: Counter balance assembly 15000892: Float shaft extension DPDT (Snap Switch) Green Grd. Connection Black N.O. Green Grd. Connection Black N.O. White COM. ed SPDT (Snap Switch) Red N.C. Blue N.C. White COM. Red N.C. Yellow COM. Orange N.C. Switch Rating: 10 A @ 125-250 VAC 1/2 A @ 125 VDC 1/4 A @ 250 VDC 10 A @ 6-24 VDC Inductive/Resistive he e c la k n te w t st eb Su ve si p rs te er io fo s n r ed Switch Rating: 5 A @ 125-250- 480 VAC 1/2 A @ 125 VDC 1/4 A @ 250 VDC 2A @ 6-30 VDC Resistive 1A @ 6-30 VDC Inductive CAUTION LS200 Series parts are not interchangable with other liquid level products. Damage caused by the above mentioned is not covered by our Limited Warranty. *To maintain hazardous location listings, all other repairs must be made by the factory. ACCESSORIES Order by part number designation. 55050617: DVU150/DVU175 Adapter Bushing 15050375: Weld Collar 2 NPT 2-1/16 in (52 mm) 2-1/2 in (64 mm) 1-1/16 in (27 mm) 2-7/8 in (73 mm) 3-5/8 in. (92 mm) 1 NPT 4-1/2 in (114 mm) um Operating Pressure: 2000 psi (13.8 MPa) [138 bar]. Operating Temperature: 400°F (204°C). Material: 2-1/2 Hex bar stock C.R.S 2 NPT 15051098: External Float Chamber 15000478: Float Shaft Extension 3 in. (76 mm) 1-11.5 NPT (2 places) 12-24 UNC 3 in. (76 mm) 1 in (25 mm) 3.5 in. (89 mm) Material: Cast Steel, WCB Material: AISI 303, UNS-S30300 Warranty 7.01 in. (179 mm) Operating Pressure: 2000 psi (13.8 MPa) [138 bar]. Operating Temperature: 400°F (204°C). ® FWMurphy CONTROL SYSTEMS & SERVICES DIVISION P.O. Box 1819; Rosenberg, Texas 77471; USA +1 281 633 4500 fax +1 281 633 4588 e-mail firstname.lastname@example.org MURPHY DE MEXICO, S.A. DE C.V. Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje San Luis Potosí, S.L.P.; México 78384 +52 444 8206264 fax +52 444 8206336 Villahermosa Office +52 993 3162117 e-mail email@example.com www.murphymex.com.mx A limited warranty on materials and workmanship is given with this FWMurphy product. A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/warranty.asp. FRANK W. MURPHY, LTD. Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K. +44 1722 410055 fax +44 1722 410088 e-mail firstname.lastname@example.org www.fwmurphy.co.uk MURPHY SWITCH OF CALIFORNIA 41343 12th Street West Palmdale, California 93551-1442; USA +1 661 272 4700 fax +1 661 947 7570 e-mail email@example.com www.murphyswitch.com MACQUARRIE CORPORATION 1620 Hume Highway Campbellfield, Vic 3061; Australia +61 3 9358 5555 fax +61 3 9358 5558 e-mail firstname.lastname@example.org RE P.O. Box 470248 Tulsa, Oklahoma 74147 USA +1 918 317 4100 fax +1 918 317 4266 e-mail email@example.com www.fwmurphy.com 3/8 in (10 mm) GI D 7.55 in. (192 mm) 12-24 UNC 1/2-20 UNF-2B (4 places) C D 10.5 in. (266 mm) E oc 2-11.5 NPT STER USA–ISO 9001:2000 FM 28221 UK–ISO 9001:2000 FM 29422 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. LS-04006N page 4 of 4 Printed in U.S.A.
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