User’s Guide LL-100 Series Shop online at omega.com e-mail: info@omega.com For latest product manuals: omegamanual.
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UNPACKING INSTRUCTIONS UNPACKING INSTRUCTIONS Remove the Packing List and verify that you have received all equipment, including the following (quantities in parentheses): Ultrasonic Level Switch (1) Operator’s Manual (1) If you have any questions about the shipment, please call the Omega Customer Service Department. When you receive the shipment, inspect the container and equipment for signs of damage. Note any evidence of rough handling in transit. Immediately report any damage to the shipping agent.
TABLE OF CONTENTS Page Chapter 1 Point Level Model Description . . . . . . . . . . . . . . . . . . . . . . .4 Chapter 2 Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Chapter 3 Installation Chapter 4 System Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . .8-10 Chapter 5 Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12 Chapter 6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 SYSTEM DESCRIPTIONS GENERAL DESCRIPTION This Series of Liquid Level Detection systems are ideal, low cost ultrasonic liquid level detection systems for many applications. They operate in a broad spectrum of viscous to light liquids. It uses proven ultrasonic technology with a sensor fabricated completely from 316 Stainless Steel, which allows it to operate in virtually any liquid. Sensitivity adjustment allows the monitoring of percentage solids in the contents of the liquid.
2 PRINCIPLES OF OPERATION The Level switches operates using ultrasonic sound wave propagation. Ultrasonic sound waves are greatly attenuated when transmitted through air. Conversely, when liquid is present, transmission of the sound waves is greatly enhanced. The electronic control unit, either integral or remote to the sensor, generates electrical signals that are converted to bursts of ultrasonic energy at the sensor. The ultrasonic bursts are transmitted across the liquid sensing gap of the sensor.
FINAL INSTALLATION CONTACT MODELS 3 Follow the instructions below: 1. Drill a suitable hole in the vessel or pipe wall and tap for 3/4” NPT. If this walled vessel or material is not suitable for threading, weld or braze a bushing to accept the sensor. 2. Screw the sensor in the threaded section and make sure that there is a good seal. Use a pipe compound or sealing tape compatible with the materials and avoid excessive tightening. 3. Run the power and control wiring cable to the electronic control unit.
3 FINAL INSTALLATION CALIBRATION PROCEDURE (IF REQUIRED, OTHERWISE DO NOT ADJUST THE POTENTIOMETER LVUC10) After the installation is complete, the system must be calibrated for the proper operation. 1. Connect the sensor cable to electronics at Jacks J1 and J2. 2. Connect power as per wiring diagram. 3. Turn the power on. 4. Allow the liquid or sludge to rise above the sensing point, adjust the potentiometer clockwise, until the relay is energized or output will switch to 20.0+1.0 mA.
SYSTEM WIRING DIAGRAM 8 For Ultrasonic Point Level Switches 4
4 SYSTEM WIRING DIAGRAM For Ultrasonic Point Level Switches 9
4 10 SYSTEM WIRING DIAGRAM For Ultrasonic Point Level Switches
5 DIMENSIONAL DRAWINGS For Ultrasonic Point Level Switches 11
DIMENSIONAL DRAWINGS 12 For Ultrasonic Point Level Switches 5
6 MAINTENANCE PREVENTATIVE MAINTENANCE Electronics are constructed with solid state components and are epoxy encapsulated. Periodically check and clean the sensor when used with liquids which cause a coating build up on the sensor. No other maintenance is required. CLEANING If the pipe or vessel to which the unit is mounted is to be steam cleaned or cleaned with abrasive detergents, remove the entire unit before cleaning by: 1. Disconnecting the power at the source. 2. Opening the housing cover. 3.
WARRANTY/DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product. If the unit malfunctions, it must be returned to the factory for evaluation.
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