Omega Vehicle Security LVP-51 Series User's Manual
Contents
1. ORED H CALIBRATION CALIBRATION Step Eight After it is installed in place the LVP 51 series must be calibrated by the user before operation Everything needed for the procedure is self con tained within the electronics of the LVP 51 series level switch Two dielectric states full condition and empty condition are measured by the LVP 51 series and then averaged to set the threshold between wet and dry at the sensor The empty state must be at least 6 below the bottom of the sensor for calibration The full state must be to the top of the sensor not just to the point of actuation for calibra tion The actual application fluid at its intended operating temperature must be used during calibration Use the following procedure assumes that the sensor has already been wired to a power supply 1 Remove the cap from the sensor body by loosening the two screws located below the sensor Do not remove the screws from the sensor Insert a small screwdriver into the small slot at the edge of the cap and gently pry upwards 2 Looking down you will see a small three position switch and two trimpots marked Full and Empty You may start with whatever state the tank is in 3 Full state With the tank filled to the top of the sen sor set the switch to the Full posi S EMPTY OPERATE FULL CAL a gt CAL Switch Q cre2. Where Do I Find Everything Need for Process Measurement and Control OMEGA Of Course TEMPERATURE Zd Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies LA Wire Thermocouple RTD amp Thermistor IF Calibrators amp Ice Point References EF Recorders Controllers amp Process Monitors LY Infrared Pyrometers PRESSURE STRAIN AND FORCE LY Transducers amp Strain Gauges 4 Load Cells amp Pressure Gauges LY Displacement Transducers EF Instrumentation amp Accessories FLOW LEVEL LF Rotameters Gas Mass Flowmeters amp Flow Computers Air Velocity Indicators Turbine Paddlewheel Systems Z Totalizers amp Batch Controllers pH CONDUCTIVITY A pH Electrodes Testers amp Accessories Zd Benchtop Laboratory Meters EF Controllers Calibrators Simulators amp Pumps L Industrial pH amp Conductivity Equipment DATA ACQUISITION 4 Data Acquisition amp Engineering Software L Communications Based Acquisition Systems l Plug in Cards for Apple IBM amp Compatibles Y Datalogging Systems EF Recorders Printers amp Plotters HEATERS Heating Cable A Cartridge amp Strip Heaters 4 Immersion amp Band Heaters E7 Flexible Heaters LY Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL 4 Metering amp Control Instrumentation IF Refractometers 4 Pumps amp Tubing A Air Soil amp Water Monitors Industrial Water amp Wastewater Treatment L7 p
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5. OWHT LOAD 4 a UOBLK o H r ea aj Switching a Normally Closed DC Load The Black wire connects to Positive of the power supply and the Red wire connects to Negative The LOAD can be attached to either the Green or White wires Complete the circuit by either con necting the Green to VDC power or White to VDC power see illustration below Dry Condition i OBLK a jj Sensor z OGRN LOAD I NC SHLD OR O O O OWHT LOAD _ ORED H j Switching a Normally Open AC Load The Red wire connects to Positive of the DC power supply and the Black wire connects to Negative The LOAD can be attached to the Green wire and the Hot of the VAC power Connect the White to the Neutral of the VAC power see illustration below Dry Condition fe RED Sensor OGRN LOAD O NO SHLD AC Power oO ep WHT O I f woe p Switching a Normally Closed AC Load The Black wire connects to Positive of the DC power supply and the Red wire connects to Negative The LOAD can be attached to the Green wire and the Hot of the VAC power Connect the White to the Neutral of the VAC power see illustration below Dry Condition ee l Sensor OGRN LOAD O NC a SHLD AC Power Oo i WHT n O l l
6. to 3 5 1 5 to 1 7 Alcohol 16 to 31 Carbon tetrachloride 2 2 Ethyl salicylate 8 6 Jet fuel 1 7 Oils mineral 2 3 to 2 4 Thinner 3 7 Ammonia 15 to 25 Cyan 2 6 Ethyl stearate 2 9 Lead carbonate 18 Oils petroleum 1 8 to 2 2 Urea 3 5 Acetic acid 4 1 to 6 2 Cyclohexanemethanol 3 7 Ethyl silicote 4 1 Lead nitrate 38 Oleic acid 2 5 Vinyl chloride 2 8 to 6 Butyl chloride 9 6 D I Water 20 Formic acid 59 Methyl salicylate 9 0 Propane liquid 1 8 to 1 9 Vinyl alcohol 1 8 to 2 0 Barium chloride 9 to 11 Ethyl toluene 2 2 Ferric oleate 2 6 Methanol 33 Potassium nitrate Water 20 C 80 Benzene 2 3 Ethyl alcohol 23 Freon 2 2 Methyl alcohol 33 to 38 5 0 to 5 9 Water 100 C 48 Benzine 2 3 Ethylene glycol 37 Glycerine 47 Margarine liquid 2 8 to 3 2 Potassium chloride 5 0 Barium nitrate 5 6 Ethylene oxide 14 Glycol 30 Methyl acetate 7 3 Stearic acid 23 Bromine 3 1 Glycol nitrite 27 N butyl formate 2 4 Toluene 2 4 SAFETY PRECAUTIONS INTRODUCTION Step Two About this Manual PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING OR USING THIS PRODUCT This manual includes information on all models of the LVP 51 series Non Intrusive RF Capacitance level switch from Omega Please refer to the part number located on the switch label to verify the exact model which you have purchased A User s Responsibility for Safety Omega manufactures a wide range of liquid le
7. 2A INPUT 2B oa misk Red White and Green Not Used Wiring as a P Channel or N Channel output The LVP 51 series can be substituted for either a P Channel PNP sourcing output or a N Channel NPN sinking output Normally Open DC Load as a P Channel Output To wire as a NO P Channel output follow the directions below The Red wire connects to Positive of the power supply and the Black wire connects to Negative The Green wire is jumpered to the Red wire while the White wire is connected to the LOAD Jumper the LOAD back to the Negative to complete the circuit Dry Condition N ORED Sensor GRN NO OSHLD o 2 OWHT LOAD 7 U oBLK 4 H E S i Normally Closed DC Load as a P Channel Output To wire as a NC P Channel output follow the directions below The Black wire connects to Positive of the power supply and the Red wire connects to Negative The Green wire is jumpered to the Black wire while the White wire is connected to the LOAD Jumper the LOAD back to the Negative to complete the circuit Normally Open DC Load as a N Channel Output To wire as a NO N Channel output follow the directions below The Red wire connects to Positive of the power supply and the Black wire connects to Negative The White wire is Jumpered to the Black
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10. H Conductivity amp Dissolved Oxygen Instruments M 3949 0403 User s Guide PE OMEGA An OMEGA Techi http www omega com e mail info omega com LVP 51 Series Non Intrusive Capacitance Switch suoneoldde ueuunu 104 pasn aq Jou pinoys pue ul asn 1oj p uBis p Jou aue sjonpod esau DNINHVIA ad 0U 1noulA sUOHedy 9eds 1 l 0 446 ay s A18s 1 pue sujezuod 4 s4044 Aue 1oj AlIlIqeii ou s dav e ou 6uuug ui65u3 y 3NO 1nq 1981103 aq 0 p A ll q s 1u uun oop SIY u p ulejuo2 uoneuuoju IYL uoneol1Jii923 uodn olA p l lidoidde 1 A8 01 Jew 32 24 ppe IIM V 3NWO s 9Al 991I1q YoRosddy MeN ue doln3 y 0 s onpoid s JO uone Buinsind Ajjueysuod SI V 3NO Ajdde yey suonejnBes IIAI3 2IW3 pue Ajeyes apimpyiom Je UMA Ajdwos 0 YDJWO JO Aaljod y S Y YM ooeSauro sayes retu IpeSawo sayes retu 887 887 0080 CPE 99 0080 eouRLy ur 3A TIOL uropSury parun ur aang TOL ZZ tS ZS OE 1 0 XVd 00 6Z Z 19 1 0 AL auey 3uno aue n5 08z28 C99 LLL I91 0 Prt XVa Janae sonboef ani TT 1199 444 191 0 P AL 35 u Px 3 a wop8ury parun aas PHN Aasoyoueyy weg yuequyIoNy nu O ASojouypay pu g 1aary auq eS urO uO PaqIH D Z006 OS WopSupy poun ap eSawo Mosut tetu 8292 6 9 0080 Xueuut 5 ut 14 TOL 6Z 86 6 9S0Z 0 6 XV4 0 86 6 960Z 0 6F TL zo doyseSawogoyut retuu THE99 1 0080 14 TOL PILLL
11. all materials An electrical Conduit entrance Single 1 2 NPT capacitor is formed between the level switch and the outer Bracket material PE tank wall As liquid rises and falls against the inner wall the N Bracket mounting 3M adhesive plastic capacitance effect is greatly increased and the 1A SPST N thermal weld relay changes state E Cable jacket mat PP Cable type 4 conductor 22 AWG shielded Cable length Standard 10 3m Classification General purpose CE compliance EN 50082 2 immunity EN 55011 emission EN 61010 1 safety Kara 25mm 1 6 41mm A Z T a ee ae O RELAY Red Black 2 White NO NC gt Green COM lt aad oe 8 Cable 2 5m Y gt 1 7 44mm lt 2 8 71mm Table of Common Dielectric Constants NOTE Liquids with a conductivity value gt 100 uU are fine if coating is not an issue Liquids with a dielectric constant less than 20 may not be reli ably detected by an LVP 51 series level switch depending on conditions Acetone 21 Chlorobenzene 4 7 to6 Ethylene dichloride Gasoline 2to2 2 Nitrobenzene 26 to 35 Trichloroethylene 3 4 Acetoaldehyde 22 2 Chlorotoluene 4 7 11 to 17 Hydrochloric acid 4 6 Nitrotoluene 25 Trichloroacetic acid 4 5 Acetyl methyl hexyl Chloroform 4 5 to 5 0 Ethylene chloride 10 5 Isobutyric acid 2 7 Naphthalene 2 3 to2 5 Terephthalic acid ketone 28 Chlorine liquid 2 0 Ethyl acetate 6 4 Isobutyl methyl ketone 13 Oils vegetable 2 5
12. g on the application liq uid and tank wall characteristics lt wed lt Fitin After positioning the fitting to check clearances etc remove the paper protective strips from the lt Sensor adhesive of the fitting i Y 2 Press the fitting into place The Gorei adhesive provides a seal between mmg 1 2 NPT P Connector the sensor and the tank wall and will hold it in place during testing and installation If desired the sensor may be installed temporarily without weld ing the fitting to the wall If several different locations must be tried before permanent installation use double sided foam stick tape designed for PE for example Arclad type PE 6024 CO 7331 from Adhesive Research Inc Glen Rock PA 17327 or equivalent 3 After the sensor has been tested to verify the POA weld glass or strap the fitting to the tank using standard industrial plastic tech niques Special note for small round tanks The fitting may be attached to small round tanks as long as the majority of the fitting is firmly attached to the wall However extreme installations may effect the switches performance Mount the sensor in the fitting 1 Slide the sensor into the fitting 2 After trimming the sensor wire to length if needed by the installa tion thread the sensor wire into a plastic flexible conduit with a 1 2 male fitting Screw the conduit into the sensor being caref
13. ge used to power the LVP 51 series sensor should never exceed a maximum of 36 volts DC Electrical wiring of the sensor should be performed in accordance with all applicable national state and local codes A Flammable Explosive and Hazardous Applications The LVP 51 series switch is not rated for use in hazardous loca tions Refer to the National Electric Code NEC for all applicable installation requirements in hazardous locations DO NOT USE THE LVP 51 SERIES GENERAL PURPOSE SWITCH IN HAZ ARDOUS LOCATIONS A WARNING A Do not install the LVP 51 series level switch on a metallic tank or within 6 of any metallic object Metal will adversely affect the dielectric sensitivity of the sensor OMEGA s LVP 51 series sensors are not recommended for use with electrically charged application liquids For most reliable operation the liquid being measured may need to be electrically grounded Step Three About Non Intrusive RF Capacitance Technology OMEGA s LVP 51 series level switch generates a high radio frequen cy signal from the capacitance electrode on the tank side of each sen sor Depending on the thickness of the tank wall and the material of which it is made there is a particular minimum dielectric value the electrode measures when there is no liquid on the other side of the tank wall from the sensor When liquid is on the other side of the wall the dielectric value rises As part of installation a two step ca
14. he signal wires leaving the drain wire attached if desired With a 20 gauge wire stripper remove the last 1 4 of the colored insulation from the signal wires Signal Outputs Current sensing The standard method used by Omega controllers this technology uses only two wires Red and Black The sensor draws 5 mA when it is dry and 19 mA when wet NC NO status must be set by the controller The Green and White wires are not used Power Supply 4vpc Shield Ground Signal Outputs Relay switching Allows the sensor to switch a small load on or off directly using an internal 1 A relay 60 VAC 60 VDC All models LVP 51 series _005 use the relay and features 4 wires red black white and green and a shield wire The NO NC status is set by the polarity of the volt age feeding the Red and Black wires The Green wire is the common for the relay and the White is the NO or NC depending on the polar ity of Red and Black Normally Open Wiring 24 VDC Power Suppl ppiy alt Continuity 24 i Power Suppl pply Multimeter Continuity WIRING WIRING Step Six Wiring to a Omega Controller LVCN 120 130 140 Series Controller ota haa pea Ki INVERT DELA INVERT DELAY iS m m O O OO RELAY 1 RELAY 2 rs e5 O ail Ly 1 m INPUT 1 INPUT
15. he thickness of the wall and the dielectric value of the liquid For min example thicker tank walls can raise the POA while thinner Empty walls could lower the POA Calibration Point i If the POA needs to be ka L non conductive plastic tank wall changed measure the distance and remount the sensor in a new location Do not attempt to change the Point of Actuation by intentional miscalibration If the sensor does not signal wet and dry reliably it may be that e the dielectric constant of the application fluid is too low the tank wall is too thick for the application fluid there are static or other electrical charges in the fluid metal objects are within 6 of the sensor calibration was performed incorrectly Try the calibration procedure again after making corrections if possi ble If the full and empty states are too similar dielectrically it may not be possible to use a capacitance sensor Testing the Sensor 1 Power Apply power to sensor by connecting power to the con troller and or power supply 2 Full condition Fill the tank with the application liquid by filling the tank up to the sensor s point of actuation 3 Test With the sensor being fluctuated between wet and dry states use a multimeter to ensure that the correct signals are being pro duced by the LVP 51 series level switch or observe the sensor indicator light in the contr
16. libration procedure ensures that the threshold between wet and dry is set at the ideal point for your particular tank and application fluid without the use of any external test equipment The sensor s operation and point of actuation may vary based on the dielectric properties of various application liquids tank materials and thicknesses The LVP 51 series sensor is intended to be used with liquids with a dielectric value between 20 and 80 Due to its user calibration capability it may be able to detect liquids below a dielectric constant of 20 under certain conditions but this must be verified by experimentation INSTALLATION ELECTRICAL Step Four OMEGA s LVP 51 series level switch may be installed anywhere on a tank wall using the supplied PE fitting that the switch slides into The fitting comes with adhesive on the tank side that is sufficient to hold the sensor in position temporarily while the installation is tested but for permanent installation the fitting must be welded glassed or strapped to the tank Extra fittings are available from Omega so that the level switch may be moved to different locations on the tank by sliding it into other fittings Attach the fitting to the tank 1 Determine the mounting location for the level switch The point of actuation where the sensor will send a wet signal is most often at the center of the sensor however the actual Point of Actuation POA may differ dependin
17. oller 4 Point of Actuation Observe the point at which the rising or falling fluid level causes the sensor to change state and move the installation of the sensor if necessary Maintenance The LVP 51 series level switch itself requires no periodic mainte nance except cleaning as required However periodically clean any coating or scaling on the tank wall the sensor is attached to and check the calibration It is the responsibility of the user to determine the appropriate maintenance schedule based on the specific characteris tics of the application liquids In addition any dripping or condensa tion between the sensor and the tank wall fitting may need to be peri odically cleaned to maintain accuracy
18. ul not to cross the threads Do not over tighten the conduit in the sensor as this may break the fitting Such damage is not covered by the warranty Take care while pulling the wire through conduit that no excessive tension is placed on the sensor end of the wire so that the wire is not broken from the sensor housing 3 Connect the sensor wire to the controller following the instruc tions in its manual See the following Wiring Section for detailed wiring instructions Step Five Supply Voltage The supply voltage to the LVP 51 series level switch should never exceed a maximum of 36 VDC Omega controllers have a built in 13 5 VDC power supply which provides power to all of OMEGA s electri cally powered sensors Alternative controllers and power supplies with a minimum output of 12 VDC up to a maximum output of 36 VDC may also be used with the LVP 51 series level switch Required Cable Length Determine the length of cable required between the LVP 51 series level switch and its point of termination Allow enough slack to ensure the easy installation removal and or maintenance of the sen sor The cable length may be extended up to a maximum of 1000 feet using a well insulated 14 to 20 gauge shielded four conductor cable Wire Stripping Using a 10 gauge wire stripper carefully remove the outer layer of insulation from the last 1 1 4 of the sensor s cable Unwrap and dis card the exposed foil shield from around t
19. vel sensors and tech nologies While each of these sensors is designed to operate in a wide variety of applications it is the user s responsibility to select a sensor model that is appropriate for the application install it properly per form tests of the installed system and maintain all components The failure to do so could result in property damage or serious injury A Proper Installation and Handling Because this is an electrically operated device only properly trained staff should install and or repair this product The adhesive on the fitting is for temporary installation only For permanent installation the fitting for the sensor should be welded glassed or strapped to the tank itself using approved plastic welding tech niques Do not install the LVP 51 series sensor on a metal tank or within 6 of any metal pipe or fitting A Mounting Bracket The LVP 51 series sensor may be mounted in the PE bracket poly ethylene colored white Make sure that the fitting is compatible with the tank it will be applied to A Material Compatibility The sensor itself is not designed to be immersed It should be mounted in such a way that it does not normally come into contact with fluid Its case is made out of Polysulfone PSO Refer to an industry reference to ensure that compounds that may splash onto the controller housing will not damage it Such damage is not cov ered by the warranty A Wiring and Electrical The supply volta
20. w Housings empty FULL tion right Make Y Z hand n E Empty Pot eal L Full Pot any other objects LED are not touching the sensor while calibrating because this will cause a false read ing Using a small nonmetallic screwdriver or alignment tool turn trimpot Full until the LED just lights and no farther Note the position Now turn the trimpot back until the LED turns off The ideal setting for the trimpot is midway between these on and off points 4 Empty state With the tank drained to a point no closer than 6 inches below the bottom of the sensor set the switch to the Empty position left Set the Empty trimpot as in Step 3 5 After completing calibration make sure to return the switch to the center position Snap the cap back on by pressing down and tight en the two screws Operate Empty Full Cal Cal Switch gt O O Empty Full Pot LED Pot o Toal j Step Nine Checking the Point of Actuation Raise the fluid level to the point 1 where the sensor sends a wet max signal Input LED will turn Full Amber on Omega controllers Calibration The dry signal should be Point sent when the fluid level is Point of lowered Input LED will turn Actuation Green on Omega controllers ii The actual Point of Actuation POA depends on many variables including t
21. wire while the Green wire is connected to the LOAD Jumper the LOAD back to the Positive to complete the circuit Dry Condition i ORED Sensor OGRN LOAD j NO OSHLD I oo 2 OWHT 4 _ L OBLK H L Normally Closed DC Load as a N Channel Output To wire as a NC N Channel output follow the directions below The Black wire connects to Positive of the power supply and the Red wire connects to Negative The White wire is jumpered to the Red wire while the White wire is connected to the LOAD Jumper the LOAD back to the Positive to complete the circuit Step Seven Wiring the Relay Output The LVP 51 series relay output can be wired as a dry contact to a VDC or VAC power source LVP 51 series requires 12 36 VDC power to operate the sensor and switch the relay All illustrations below identify a Dry switch state as the normal position of the relay Switching a Normally Open DC Load The Red wire connects to Positive of the power supply and the Black wire connects to Negative The LOAD can be attached to either the Green or White wires Complete the circuit by either con necting the Green to VDC power or White to VDC power see illustration below Dry Condition N orED o i Sensor GRN LOAD kK NO SHLD OR I oo H
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