Non-Contact Level Sensor with Pump and Valve Control !
    
LP-10 and LP-20: 
 ¨ Controls directly pump or solenoid valve, ON-OFF operation.
¨ Includes Relay Latch for Pump-In and Pump-Out.
¨ Includes High and Low Alarm Relays. 
¨ No Field Calibration Required.
¨ Easy Installation, No Maintenance.
¨ Reliable Operation, No Moving Parts.
¨ Not Affected by Fumes and Condensation
¨ Automatic Temperature Compensation.
¨ Displays Level or Volume for Vertical and Horizontal Tanks.

   LP-10 and LP-20 level sensors are used to continuously monitor (sense) and indicate level or volume of liquids such as chemicals, water, fuel, diesel and heating oils, lubricants, etc. in horizontal as well as vertical tanks. Based on the level in tank, LP sensor turns ON or OFF pump or solenoid valve. The user is only required to set the High and Low liquid levels to select either Pump-In or Pump-Out operation. The internal latching relay contact is configured to turn power to pump/valve on or off. 
    The High and Low alarm relays can be used for alarm in case pump fails. Or, they could be wired for second pump control.
       
         This product is designed to replace or upgrade from older mechanical gauges and float controls. Field calibration is not required. The basic difference between LP-10 and LP-20 models is the maximum range of measurement (tank height or tank diameter). LP-10 can monitor tanks to 15 feet high. LP-20 is for any taller tanks.

   The sensing is non-contact; transducer is mounted above the highest level in tank and thus will not touch the fluid. The monitor transmits an ultrasonic signal directed toward the monitored surface and measures the time to receive the reflected echo. The time is then converted to depth of liquid in tank. This enables an accurate measurement over the entire range. Microprocessor then performs the  calculations and displays level or volume in tank on highly visible LCD display. Based on the level, microprocessor then determines whether to turn pump or valve ON or OFF.
          
INITIAL SETUP:
Is required only once, anytime, prior or after installation. It can be done on your desk and even without transducer being connected.  The user would set pump/valve ON and OFF level (to control pump or solenoid valve) and vertical distance between transducer and tank bottom (needed for digital readout). All this is a very simple task, done by jogging push button switches until the correct level is shown in display. We will be happy to do that for you if you provide us with the levels information. These initial setup data are stored in the microprocessor’s non-volatile memory and will remain there forever, or until the user changes it for some reason. Power loss, no matter how long, will not erase the data.
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SPECIFICATIONS:
   
RANGE:
LP-10: for tanks up to 15 ft. tall.
LP-20: all larger (taller) tanks.
 
READOUT: Feet or Inches (standard), meters (optional)
                   U.S. gallons and Liters (optional)
  
ACCURACY: +/- 0.25% of span
  
REPEATABILITY: +/- 0.15% of span
  
POWER: 115 VAC +/- 15%, 60 Hz, 6VA (std.)
               220 VAC +/- 15%, 50 Hz (opt.)
              12 VDC or 24VDC, 0.25 Amp. (opt.)
      
ENCLOSURE: NEMA-4X Outdoor, polycarbonate with clear view cover, 9” x 7” x 4” (std.)
Operating Temp. 20° F to 150° F.
  
STANDARD TRANSDUCER:
LP-10: #7508, PVC housing,9” blind zone,
                     2” diameter.
LP-20: #4012A, PVC housing, 15” blind zone,
                       3” diameter.
Operating Temperature –20°F to + 190°F, both.
(Both above transducers also available in optional Teflon housing). For suggested transducer mounting, Click Here.
    
OPTIONAL TRANSDUCERS:
#4012BS, 316 stainless steel housing.
#4012BS/CSA, 316 SS, Explosion-proof, approved by CSA for all Class I, Groups A, B, C & D. Both range to 30 feet, blind zone 18”. 3” diameter both.
#4012-Teflon, Teflon housing, range to 40 ft., 3" dia.
#2006, PVC, Teflon or 316 stainless steel, ranges to 6 ft., blind zone 5” to 8”.
Plus variety of  other 316 SS and Teflon transducers for ranges to 8 ft. 
   
TRANSDUCER CABLE: RG62/U coaxial, 30 ft. furnished (std.). Longer cables installed on request. Or, you may purchase the additional cable locally.

 TYPICAL APPLICATION: