A. General Description The LS7000 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.
APPLICATION. (See calibration instructions, section 4, A) On the bench, hook up the appropriate power to L1 and L2. The operating voltage of the LS7000 is marked on the power supply board. Hold the unit so that the probe is not touching any surface and press the test switch.
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 LS7000 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.
TYPICAL WIRING APPLICATION 115 VAC AUTOMATIC FILLING OF TANK. WHEN LEVEL FALLS TO POINT “A”, A PUMP COMES ON TO FILL TO POINT “B”, THEN TURNS OFF.) LS7000 ”A” FAIL SAFE LOW SELECTED. LS7000 “B” FAIL SAFE HIGH “B” SELECTED.
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TYPICAL WIRING APPLICATION 115 VAC HIGH LEVEL ALARM USING THE TIME DELAY TO IGNORE SPLASHING OR WAVE ACTION. (TIME ON, INSTANT OFF) LS7000 FAIL SAFE HIGH SELECTOR, ON, DELAY SET FOR 2 SECONDS HIGH LEVEL ALARM LIGHT. “A” WHEN THE FLUID REACHES POINT “A”,...
DELAY C. Sensitivity Calibration The LS7000 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.
Every LS7000 has a diagram inside the screw cover to serve as a reminder to those who have calibrated the unit before. This shows the calibration adjustments and indicators. This diagram is reproduced below. SPECIAL CALIBRATION NOTES: For some products, the LS7000 can be calibrated with product touching the probe. To do this, turn the sensitivity adjust pot CW until the red LED just comes on and continue CW for 1/8 to ¼...
QUESTIONS OR NEED ASSISTANCE 6. WARRANTY All components of the LS7000 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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