LS8000 LEVEL SWITCH OWNERS MANUAL ♦INSTALLATION ♦CALIBRATION ♦TROUBLESHOOTING ♦WARRANTY BABBITT TABLE OF CONTENTS Page 1. Description-------------------------------------------------------------------1 INTERNATIONAL, INC. P.O.
TABLE OF CONTENTS Page 1. Description ----------------------------------------------------- 1 A. General Description B. Specifications ----------------------------------- 1 -------------------------------------------- 1 2. Theory of Operation/ Ordering Information 3. Installation A. Inspection ----------------- 2 ----------------------------------------------------- 2 ----------------------------------------------------- 2 B. Physical Installation of Probe ----------------------------------- 2 C.
LS8000 LEVEL SWITCH 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. The receiver board may be mounted up to one mile from the probe.
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. When material is in contact with the probe, the bridge becomes unbalanced and the comparing circuit realizes the change. This causes the relay to change state.
6) The LS8000 has a ¾” NPT conduit entry. When wiring these units, conform to the National Electrical Code and any other city or company codes. 7) Always install the electrical connection into the ¾” NPT on the LS8000 so water will not follow the connection routing into the threads of the ¾” NPT hub. To guarantee that condensation and water will stay outside the unit, install an EYSM unilet before each LS8000 and fill with explosion proof sealing cement.
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4. CALIBRATION PLEASE READ THE ENTIRE CALIBRATION PROCEDURE BEFORE CALIBRATING THE LS8000. If no time delay is required, turn the time adjustment pot completely CCW and set S1 down, S2 up. The potentiometer has 20 turns and freewheels at the end of its travel without damage. You may hear “clicks” at the end of travel. A. Setting the Time Delay 1) Setting the timing mode, either on delay or off delay, is done by positioning S3 and S4 as shown in the chart below.
5. 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. Review the Installation and Calibration procedures in sections 3 and 4.
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. Babbitt International, Inc. will repair or replace, at its option, FOB at its plant or any other location designated, any part which proves to be defective in manufacture or workmanship.