Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Omega LVU700 Series
Summary of Contents for Omega LVU700 Series
- Page 1 ...
- Page 2 ...
-
Page 3: Table Of Contents
Introduction / Table of Contents Step One An ultrasonic sound wave is pulsed from the base of the transducer. The sound wave reflects against the process medium below it. The sound wave energy is returned to the transducer. The microprocessor based electronics measures the time of flight between the sound pulse generation and its receipt. - Page 4 Introduction / Table of Contents Step One Wiring: ................................33 Wiring Diagram – Sample: ........................33 Wiring LVU700 series: ..........................33 Wire Connections: ........................... 34 General Notes for Electrical Connections, Usage and Safety: ............... 34 Analog Output: ............................35 Voltage Output: ............................35 Common Wiring to Displays, Controllers &...
-
Page 5: Specifications
Introduction (continued) Step One SPECIFICATIONS Electrical: Environmental: Supply Voltage: 14-28 Vdc Process Temp.: -40 to 80 °C (-40 to 176 °F) Signal: 4 to 20 mA current loop; 22 mA Temp. comp.: Automatic max. Ambient Temp.: -35 to 60 °C (-31 to 140 °F) Pressure: 30 psi, derated @ 1.667 psi per degree C above 25 °C... -
Page 6: Dimensions
Introduction (continued) Step One DIMENSIONS Dimensions for LVU706 Series Dimensions for LVU712 Series ... -
Page 7: Reflective Technology
Introduction (continued) Step One REFLECTIVE TECHNOLOGY Condensation is the most common variable in liquid level applications. Condensation attenuates the acoustic signal of ultrasonic sensors with horizontal transducers, weakening their signal strength and signal to noise ratio by up to 50%, and substantially reducing their measurement reliability. At the core of Reflective Technology™... -
Page 8: About This Manual
Always check for leaks prior to system start-up. Wiring and Electrical: A supply voltage of 14 to 28 VDC is used to power the LVU700 series. Electrical wiring of the transmitter should be performed in accordance with all applicable national, state, and local codes. -
Page 9: Getting Started
Section 6 contains information about the sensor’s electrical wiring and power requirements. Note: When configuring LVU700 series, choose either the LVCN414-SW software or Push Button method. Either method will accomplish the goal of sensor configuration. Changes to the configuration can be made using the alternative method. -
Page 10: Components
Section Two COMPONENTS LVU700 series is offered in different models. Depending on the model purchased, you may or may not have been shipped all the components shown below. All G threaded process mounts require a FKM gasket for installation and operation of LVU700 series. -
Page 11: Lvcn414-Sw Software Vs. Display Configuration
LVU700 series can be configured before installation or after installation. The transmitter features non-volatile memory, so any settings configured before installation will not be lost when the sensor is powered down. To start, the following information is required: ... -
Page 12: Understanding Sensor Height (Height)
UNDERSTANDING SENSOR HEIGHT (HEIGHT) This is a critical setting for LVU700 series. Sensor Height (SH) defines the location of the sensor from the bottom of the tank. The value must take into account the shape of the tank and any risers, fittings, structures or extensions associated with the tank or the installation (see examples below). -
Page 13: Understanding Fill-Height (Fill-H)
Step Two UNDERSTANDING FILL-HEIGHT (FILL-H) This is another critical setting for LVU700 series. FILL-H (Fill-Height) defines the location of the highest point in the tank where the sensor will read level changes. When the level rises above FILL-H, the sensor will read full (as long as the level does not enter the dead band). - Page 14 Cone and Rounded Bottom Tanks The location of an LVU700 series installed along the top of a cone or rounded bottom tank may have an effect on the installation 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 away from the sensor as the liquid level is lowered.
-
Page 15: Sensor Output To Local Display
SENSOR OUTPUT TO LOCAL DISPLAY/CONTROLLER LVU700 series outputs a 4-20 mA signal to a local display/controller or to remote devices such as PLCs, SCADA, DCS or other displays/controllers. The 4-20 mA signal is set relative to the Sensor Height and Fill- Height settings. -
Page 16: Configuration (With Lvcn414-Sw Software)
Configuration Using LVCN414-SW software Step Three LVU700 series can be configured before installation. The transmitter features non-volatile memory, so any setting configured before installation will not be lost when the switch is powered down. To configure, follow the steps below: 1. -
Page 17: Step 1 - Install Lvcn414-Sw Software
(continued) Step Three STEP 1 – INSTALL LVCN414-SW SOFTWARE LVU700 series is configured through LVCN414-SW software, a PC software program. LVCN414-SW software is a free download from OMEGA ENGINEERING’s website. You must download and install LVCN414-SW ® software prior to plugging in the USB Fob (LVU500-USB). -
Page 18: Usb Fob Interface
LVCN414-SW (see omega.com/ftp) on your computer. Connect the red, green, white and black wires from LVU700 series into the correct terminals on the Fob. ® Tighten the screws on the terminals. Plug your Fob into the USB port of your computer. -
Page 19: Step 2 - Measure The Tank
Configuration Using LVCN414-SW software (continued) Step Three STEP 2 - MEASURE THE TANK Measuring the tank is one of the most important aspects in configuring the sensor. When measuring the tank, take into account the location of the sensor with respect to fittings, risers, dome tops and bottoms, and identify where the measurements are taken from the sensor. -
Page 20: Step 3 - Sensor Configuration
(continued) Step Three With LVU700 series connected to your computer, open the LVCN414-SW software by clicking on the LVCN414-SW software icon. Follow steps 3-6 to configure the transmitter. Click “Help” in the lower right hand corner and open the help menu of LVCN414-SW software for instructions on LVCN414-SW software. If you need additional assistance using LVCN414-SW, please contact a Omega Engineering sales applications engineer at (833) 484-6072. -
Page 21: Step 4 - Dimensional Entry
Configuration Using LVCN414-SW software (continued) Step Three STEP 4 – DIMENSIONAL ENTRY: Distance Mode (default): Output of sensor is based on the distance (height of liquid) in the tank. Any change in liquid level will reflect linearly to the current output. Note: Most applications will fall into this category. -
Page 22: Step 5 - Tank Level Confirmation
Configuration Using LVCN414-SW software (continued) Step Three STEP 5 – TANK LEVEL CONFIRMATION: Verify the Height Units, Sensor Height & Fill-Height. All values were calculated in the previous Dimensional Entry window. To adjust these settings, click on Volumetric Modes. ... -
Page 23: Configuration ( With Display)
Configuration Using Display Step Four LVU700 series can be configured before installation. The transmitter features non-volatile memory, so any setting configured before installation will not be lost when the switch is powered down. To configure, follow the steps below: 1. Measure the Tank a. -
Page 24: Step1 - Measure Tank
Configuration Using Display (continued) Step Four STEP 1 - MEASURE THE TANK Measuring the tank is one of the most important aspects in configuring the sensor. When measuring the tank, take into account the location of the sensor with respect to fittings, risers, dome tops and bottoms, and identify where the measurements are taken from the sensor. -
Page 25: Step 2 - Setting The Units Of Measurement
To cancel UNITS, Select EXIT. 3. Select EXIT to return to the TOP-LEVEL MENU. Note: LVU700 series will adjust the display when measurement units are changed under UNITS. Example: If you are in inches and the display reads 60.0, the display will change to 5.00 when feet is selected as the unit of... -
Page 26: Step 3 - Setting The Height
Configuration Using Display (continued) Step Four STEP 3 - SETTING THE HEIGHT (SENSOR HEIGHT) 1. In TOP-LEVEL MENU mode, select TANK. 2. Select HEIGHT. 3. Using the UP and DOWN buttons, set the HEIGHT of the tank (transducer face to the bottom of the tank). 4. -
Page 27: Step 4 - Setting The Fill-H
Configuration Using Display (continued) Step Four STEP 4 - SETTING THE FILL-H (FILL-HEIGHT) 1. In TOP-LEVEL MENU mode, select TANK. 2. Select FILL-H. 3. Using the UP and DOWN buttons, set the Fill Height (FILL-H) of the tank (max. level of liquid to the bottom of the tank). -
Page 28: Step 5 - Setting The Fail-Safe Current Output
Configuration Using Display (continued) Step Four STEP 5 - HOW TO SELECT FAIL-SAFE CURRENT OUTPUT (LOST) In the event the sensor does not receive an echo, the Fail-Safe Current Output or LOST setting can be set to output a current of 4mA, 20mA, 21mA, 22mA or Hold (last known value). During fail-safe, the display will read LOST. -
Page 29: Installation
Installation Step Five LVU700 series should always be mounted perpendicular to the liquid surface (use the provided FKM mounting gasket for G threaded versions only). Make sure that the fitting and transmitter threads are not damaged or worn. Always hand-tighten the transmitter within the fitting. Perform an installed leak test under normal process conditions prior to system start up. -
Page 30: Fitting Selection
Step Five FITTING SELECTION Check the part number to determine the required fitting mount size and thread type. LVU700 series is commonly installed in tank adapters, flanges, brackets or standpipes. Note: Always include the gasket when installing the “G” threaded LVU700 series. - Page 31 Installation (continued) Step Five 3. Flange: If installing on a flange, select a flange with a thread that is above the plane of the flange, such as the LVU800-2F. a. Use a flange with a 3” thread and add a 3” to 2” reducer bushing to complete the installation. 2”...
- Page 32 (TxT) Vent Hole (1/4”) 3” Coupling (S x T) 3” PVC Pipe LVU700 series attached to a Avoid the use of a tee within the LVU800-3S40 (3” x 2” reducer stand pipe. A tee can create false bushing) to a Slip x Thread 3”...
-
Page 33: Wiring
The analog output of the LVU700 series is a loop powered 4-20 mA control circuit. The typical way to use this feature is to connect a positive supply to the (+) input and to sense the current flow out of the (-... -
Page 34: Wire Connections
LVU500-USB Fob. The maximum cable distance LVU706 Series Shown between the computer and LVU700 series is 15’. Note: Never allow the white or green wires to touch any power supply. GENERAL NOTES FOR ELECTRICAL CONNECTIONS, USAGE AND SAFETY ... -
Page 35: Analog Output
VOLTAGE OUTPUT LVU700 series can be configured as a 0 to 5 VDC or 0 to 10 VDC output. A resistor will need to be added to the circuit to enable a voltage output (refer to the wiring diagram below). -
Page 36: Common Wiring To Displays, Controllers & Plcs
Wiring (continued) Step Six COMMON WIRING TO DISPLAYS, CONTROLLERS & PLC’S Below is a quick review of wiring the LVU700 series to common display, controllers and PLC’s. LVCN-51 Series LVCN-51 Series Level Controller Level Controller *JWA mode (Factory Setting) *JWB mode... -
Page 37: Lvcn414-Sw Software
LVCN414-SW Software Appendix Section Seven This section of LVCN414-SW software is where you select the sensor configuration settings. Start from the top and work to the bottom, choosing the selections that are applicable to your application. All configuration settings must be selected before you can continue to the next step. SENSOR CONFIGURATION LOOP FAIL-SAFE This feature allows you to select the fail-safe current output if the... - Page 38 LVCN414-SW Software Appendix (continued) Section Seven SENSOR CONFIGURATION (CONTINUED) STARTUP CONDITION This feature allows you to select the startup current when power is first applied to the sensor. The sensor will consume the selected power while it is acquiring the liquid level. When the correct level has been identified, the output will adjust to the level output.
-
Page 39: Volumetric Configuration
LVCN414-SW Software Appendix (continued) Section Seven 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 software 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. - Page 40 LVCN414-SW Software Appendix (continued) Section Seven Shape Selection Window: This window will shows the different tank shape options available in LVCN414-SW software. Vertical Cylinder Vertical Cylinder with Cone Bottom Horizontal Cylinder with End caps Horizontal Cylinder with Spherical Ends ...
- Page 41 LVCN414-SW software Appendix (continued) Section Seven Volume – Sensor Output Units (Vertical Cylinder Example): Enter the dimensions of the tank. You must enter data in all fields shown. Sensor Height: Distance from the bottom of the tank to the bottom of the sensor. Fill Height: Distance from the bottom of the tank to the operational full level of liquid (20mA).
-
Page 42: Tank Level Confirmation
LVCN414-SW software Appendix (continued) Section Seven TANK LEVEL CONFIRMATION This section of LVCN414-SW software is where you confirm the values set in the previous step. The values were entered under the Dimensional entry window. To edit these settings, you must go back to the Dimensional entry window via the Volumetric Mode button. -
Page 43: Write To Unit
Stabilize Output in Dead Band: Placing a check mark in the box will activate a filter to hold the output at Full if the level enters the dead band of the LVU700 series. This filter requires the level to leave the dead band at a smooth and steady rate. -
Page 44: Display
Display Appendix Section Eight AIR GAP VS. LIQUID LEVEL (HOW TO SELECT THE DISPLAY SETTING) The display can be made to display either the height of liquid in the tank (LIQUID mode) or the amount of air in the tank (AIR mode). This function does not influence the current output, just the display on the sensor. 1. -
Page 45: How To Reverse The Current Output (Rev Ma)
HOW TO REVERSE THE CURRENT OUTPUT The factory setting for LVU700 series has 4mA set at the bottom of the tank and 20mA at the top. If the application requires this output to be reversed (20mA at bottom and 4mA at top), then use the REV MA setting to reverse the current output. -
Page 46: How To Setup To Start-Up Power
Display Appendix (continued) Section Eight HOW TO SETUP THE START-UP POWER (STRTUP) During the window of time between when power is first applied to the sensor and the sensor acquires the level reading, the output current can be preset in order to avoid any false alarms during this window. The options for start-up are 4mA, 12mA, 20mA or 22mA. -
Page 47: Values Menu
(continued) Section Eight VALUES MENU Functions include providing setup information (SETUP), a diagnostic to be used in conjunction with a OMEGA ENGINEERING Representative (DIAG) and the ability to reset the LVU700 series (RESET). SETUP Will display the configuration settings for LVU700 series. -
Page 48: Reset
Display Appendix (continued) Section Eight RESET LVU700 series enables the end user to reset the entire configuration back to the original factory settings. 1. In TOP-LEVEL MENU mode, select VALUES. 2. Select RESET. 3. Select YES. a. To cancel the reset, Select NO. -
Page 49: Appendix
If the above do not work, reinstall the LVCN414-SW software while the computer is in Safe Mode. Internet error. The server This is a warning indicating that the computer configuring LVU700 series is not name or address could not connected to the Internet. Click OK to continue. OMEGA ENGINEERING be resolved. -
Page 50: Troubleshooting
4. If this persists, reboot computer in SAFE mode and re-install the LVCN414-SW software installer program. -2 Program to loader error Check the wires connected to the USB Fob as well as to the LVU700 series open wires terminals. ...
Need help?
Do you have a question about the LVU700 Series and is the answer not in the manual?
Questions and answers