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BABBITT
INTERNATIONAL, INC.
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P.O. Box 70094
Houston, Texas 77270
(713) 467-4438
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Summary of Contents for BABBITT LS8000
- Page 1 OWNERS MANUAL ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ BABBITT P.O. Box 70094 TABLE OF CONTENTS Houston, Texas 77270 INTERNATIONAL, INC. Page (713) 467-4438 1. Description-------------------------------------------------------------------1...
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Page 2: Table Of Contents
B. Physical Installation of Probe ----------------------------------- 2 C. Installing the Receiver ----------------------------------- 3 D. Typical Applications and Wiring Diagrams ----------------- 4 1) LS8000 Terminal Layout ----------------------------------- 4 2) Ladder Diagrams -------------------------------------------- 6 4. Calibration -------------------------------------------------------------- 10 A. Setting the Time Delay ----------------------------------- 10 B. -
Page 3: Description
1. DESCRIPTION A. General Description The LS8000 is a point level switch that detects the presence or absence of material in a bin, silo, tank or other container. The basic unit is made up of a solid stainless steel probe attached to an explosion proof housing. Inside the explosion proof housing is a transmitter that is connected to the receiver board by a twisted, shielded pair of wires. -
Page 4: Theory Of Operation/ Ordering Information
C. Ordering Information 2. THEORY OF OPERATION The LS8000 employs a radio frequency (RF) balanced impedance bridge circuit to detect if the probe is in contact with the material that is to be sensed. When material is not in contact with the probe, the bridge is balanced by turning the adjustment pot to find the threshold where the red led goes out. -
Page 5: Installing The Receiver
On gravity filled vessels, take into consideration the angle of repose formed by the product. d) On dry product that flows like water (starch), when using the LS8000 to stop the flow by means of a butterfly valve or knifegate, make sure the probe is long enough to allow time to close these slow moving valves. -
Page 12: Calibration
DELAY C. Sensitivity Calibration The LS8000 should be calibrated when no material is touching the probe and when the unit is installed where it will be used. 1) Observe the red LED. If it is on, go to step 3. -
Page 13: Maintenance And Troubleshooting
No routine maintenance is required other than keeping the interior of the unit clean and free of dirt, dust and other contaminants. The LS8000 consists of three main sub-assemblies. These are the enclosure with the antenna probe, the transmitter module and the receiver card. The following troubleshooting guide will assist in determining how to correct most of the problems which may occur in the field. -
Page 14: Warranty
6. WARRANTY All components of the LS8000 are warranted to be free from defects in material and workmanship for a period of two years from the date of purchase. This warranty applies to general purchaser and to components installed, serviced and operated according to instructions.
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