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36 

LVCN414-SW Appendix 

(continued)

 

Section Six 

  

 

VOLUMETRIC CONFIGURATION 

The  sensor  may  be  configured  in  volumetric  units 
(Gallons  or  Liters)  or  Distance  (Height  of  Liquid) 
units  (inches,  cm,  feet  or  meters).    LVCN414-SW 
will default to Distance (Height of Liquid) with units 
of  Inches.    To  change  units  or  change  from 
Distance  to  Volume,  press  the  Volumetric  Mode 
button as located near the center of the window. 

Distance (Height of Liquid):

  When this is selected, 

the  sensor  will  always  output  a  linear  output 
proportional  to  the  height  of  liquid  (regardless  of  the 
tank  shape).    In  the  two  drawings  below,  the  Sensor 
High is set to 64” and Fill-Height is set to 60”.  If the 
tank is empty, the sensor will output 4mA.  If the level 
is  at  30”,  then  the  sensor  will  output  12mA.    Either 
tank  can  be  configured  with  a  display  from  0”  to  60” 
and the sensor will always output the height of liquid. 

 

Volume:

  When volume is selected, the 4-20 mA output from the sensor will be proportional to the volume of 

the tank, not the height of the tank.  This means that the current output will track the volume of the tank (in 
gallons or liters).  Depending on the shape of the tank, the values may be a linear or non-linear scale.  In the 
same examples below, the sensors are also configured with SH = 64” and FH = 60”.  The current output in a 
linear tank will act as expected with volume increase matching equal changes to level.  However, the current 
output in the Non-Linear tank will reflect the actual changes in volume.  So even though the liquid height 
changes incrementally the same amount, the volume change will adjust throughout the entire span of the tank.  
The advantage of this is that sensor does all the math so you can read tank volume using a simple two-point 
display/controller such as the DataLoop

 LI25 series or DataView

 LI55 series. 

Linear Tank Example 
 

 

Note:

 In the above illustration, 10” of liquid will always 

be equal to 100 gallons of liquid (1” = 10 gallons). 

Non-Linear Tank Example 
 

 

Note:

 In the above illustration, 1” of liquid does not equal 10 

gallons. The 10” at the bottom represents a rise of 62.8 
gallons.  As a change between 10” and 20” represents an 
increase of 109.6 gallons (i.e. 172.4 gallons – 62.8 gallons). 

Содержание LVU500 Series

Страница 1: ...1...

Страница 2: ...2...

Страница 3: ...n Increased temperature range Increased output filtering TABLE OF CONTENTS Introduction 3 Specifications 5 Dimensions 6 About this manual 7 Getting Started 8 Setup Overview 8 Reflective Technology 8 C...

Страница 4: ...ing Inductive Loads 28 Voltage Output 28 LVCN414 SW Software Appendix 29 Sensor Configuration 29 35 Number of Pumps 29 Pump Valve Action 30 Pump Valve Mode 31 Relay Fail Safe 32 Switch Alarm Configura...

Страница 5: ...ble jacket mat l Polyurethane Cable type 9 conductor Cable length 4 121 9 cm Process Mount 2 NPT or 2 G Gasket FKM G thread only Classification General purpose Compliance CE RoHS Environmental Process...

Страница 6: ...6 Introduction continued Step One DIMENSIONS Dimensions for LVU501 LVU503 Series Cable Dimensions for LVU501 LVU503 Series...

Страница 7: ...nsducer is made of Polyvinylidene Fluoride PVDF Make sure that the model which you have selected is chemically compatible with the application media Enclosure While the sensor housing is liquid resist...

Страница 8: ...ts mechanical installation 5 Wire the sensor Section Five a Section 5 contains information about the sensor s electrical wiring and power requirements REFLECTIVE TECHNOLOGY Condensation is the most co...

Страница 9: ...et for installation and operation of LVU500 series P N Max Range Dead Band Thread Fob Output Configuration LVU503 B 9 8 3m 4 10cm 2 NPT Not Included 4 20mA 4 SPST Relays LVCN414 SW only LVU503 Include...

Страница 10: ...ings also determine the 4 to 20 mA current span The HEIGHT setting determines the 4mA position and the FILL H setting determines the 20 mA position BASIC RELAY SETTINGS High Alarms Hi Used to energize...

Страница 11: ...ank and any risers fittings structures or extensions associated with the tank or the installation see examples below The reference point for definition of the Sensor Height is always the bottom of the...

Страница 12: ...k Note The ratio of height to diameter of the riser must be no greater than 2 1 Any higher and the sensor will target the inside wall of the riser Example 2 Dome Top Tanks Tank C has a tall enough dom...

Страница 13: ...tallation of the sensor Be sure to understand the geometry directly underneath the sensor Cone or rounded bottom tanks will provide off angled surfaces that can reflect the ultrasonic sound energy awa...

Страница 14: ...s i e inches feet gallons meters liters etc Tank A Tank B Tank C In the Tank A example the Sensor Height sets the 4mA to the bottom of the tank Fill Height sets the 20mA to the top of the straight sid...

Страница 15: ...tting dimensions b Include all settings for each relay c Correct tank dimensions will result in accurate sensor measurement 3 Sensor Configuration a Configures Number of Pumps Pump Valve Action Pump V...

Страница 16: ...interface called a Fob LVU500 USB Before plugging your Fob into your computer s USB port be sure that you have installed LVCN414 SW see omega com ftp on your computer Connect the red green white and b...

Страница 17: ...asurement location to the bottom of the tank a The Sensor Height is typically set to the bottom of the tank b This setting determines the 4mA location 2 FILL H Fill Height Distance from the bottom of...

Страница 18: ...W If you need additional assistance using LVCN414 SW please contact a Omega Engineering sales applications engineer at 833 484 6072 Note For complete information on the LVCN414 SW software please refe...

Страница 19: ...use in Sensor Height and Fill Height settings Sensor Height Sets the location for 4mA It is based on the distance from the Empty level position to the Measurement location for the sensor see below Fil...

Страница 20: ...ll values were calculated and set in the previous Dimensional Entry window Make any adjustments if required STEP 6 WRITE TO UNIT This LVCN414 SW operation uploads configuration into the sensor Other f...

Страница 21: ...d 3 Side Wall a Mount at least 3 from the side wall 4 Do not mount where obstacles will intrude on sensor s beam width 5 Do not mount in a vacuum 6 Avoid mounting in the center of a dome top tank 7 In...

Страница 22: ...et x Thread LVU800 2B shown Tank Adapter LVU800 3B w 3 x 2 Reducer Bushing LVU800 3N40 Tank Adapter Thread x Thread Do not use thread x thread 2 Riser Installations with tall narrow risers can impede...

Страница 23: ...bushing to complete the installation 2 Flange w thread out of plane LVU800 2F 3 Flange LVU800 3F w Reducer Bushing LVU800 3N80 4 Side Mount Bracket For installations in open tanks and sumps use the LV...

Страница 24: ...the pipe should remain submerged at all times to prevent foam from entering the pipe e Cut a 45 notch at the bottom of the pipe Drill a 1 4 pressure equalization hole in the dead band f The pumps shou...

Страница 25: ...s only a sample and should not be used as a wiring diagram LVU500 series is a loop powered 4 20mA device The power loop and current output loop are shared by the Red and Black wires Relays are all dry...

Страница 26: ...ntacts so polarity can be revered from the example shown in the wiring diagram LVU500 series uses latching relays When power is removed to the sensor the relays will remain in their last state Ex If t...

Страница 27: ...LLERS PLC S CONTINUED LVCN 51 Series Level Controller JWA mode Factory Setting LVCN 51 Series Level Controller JWB mode Generic Loop Powered Display Generic PLC Refer to the LVCN 51 Series Level Contr...

Страница 28: ...following circuits for RC network assembly and installation Choose R and C as follows R 0 5 to 1 Ohms for each volt across the contacts C 0 5 to 1 F for each amp through closed contacts Notes 1 Use c...

Страница 29: ...often referred to as latching relays o Switch Alarms Only The relays will be standard single point non latching relays Use this setting for high and or low alarms o 1 Pump Valve One relay will be con...

Страница 30: ...ther for empty o Empties Tank Sets the relay s to automatically empty a tank The start level will be above the Stop level for each relay o Fills Tank Sets the relay s to automatically fill a tank The...

Страница 31: ...lead level is reached the first relay will always start The lag relay will only start when the lag level is reached All relays will stop at the common off level o Lead Lag used to Empty Tank o Duplex...

Страница 32: ...en Switch Alarms Only is selected o Hold State The relay s will remain in the same state as the last confident echo detected When the sensor regains echo confidence the relays will revert to the curre...

Страница 33: ...larms 1 High 2 High 3 High 4 High o Low Alarms Set 1 to 4 Low Alarms 1 Low 2 Low 3 Low or 4 Low o Combination Alarms Sets a combination of High and Low Alarms 1 Low 1 High 1 Low 2 High 2 Low 1 High 2...

Страница 34: ...ble o High Alarms Relay activates above the set point Relay will deactivate when the level goes below the set point plus the value of the hysteresis o Low Alarms Relay activates below the set point Re...

Страница 35: ...elected the sensor will output 20 mA during a fail safe condition If 20 mA at Bottom is selected the sensor will output 4 mA during a fail safe condition o Overfill 21mA The sensor will output 21mA du...

Страница 36: ...the height of the tank This means that the current output will track the volume of the tank in gallons or liters Depending on the shape of the tank the values may be a linear or non linear scale In th...

Страница 37: ...s Distance or Volume After choosing the Sensor Output Units select the units of measurement in the pull down to the left Units of Measurement Distance Volume Inches Cm Feet Meters Gallons Liters Dista...

Страница 38: ...he top of the straight side wall Diameter Distance of the inside tank diameter Volume Tank Capacity Vertical Cylinder Example After entering the dimensions press the Capacity button to show the Calcul...

Страница 39: ...om the bottom of the tank to the operational full level of liquid 20mA This setting defines the location of full current output and is the top of the sensor s measurement range Capacity The total volu...

Страница 40: ...tting designed to help solve performance or operational issues for specific applications Changing these setting will alter the factory default performance or operation of your sensor Increase Output F...

Страница 41: ...OLUTION Transmitter indicates a current of 0 mA Check the wiring for an open circuit An open circuit is the most common issue with a 0 mA signal Transmitter jumps to a current reading between 19 and 2...

Страница 42: ...l begin to eliminate functions that are not applicable to a configuration To reset Configuration or get access to all the features click on the Clear Screen button Relay closes but does not open again...

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