Tank Level Measurement

Tank Level Measurement

Tank level measurement Greyline LIT25 non-contacting level sensor and control unit
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The LIT25 is a level indication sensor that displays, controls, and transmits level. The non-contacting level sensor mounts at the top of a tank and the compact, watertight display enclosure is mounted at a convenient location nearby. Operators can calibrate the LIT25 with its 2-button keypad, without climbing to the top of the tank, enabling organizations to gain better stock and inventory control and tank level measurement that complies with health and safety regulations. 

Use the built-in relay for level control or alarm, the large 4-digit display for local indication, and the isolated 4-20mA output to transmit level to a PLC. The standard ultrasonic level sensor measures liquid levels up to 9.8 m (32 ft) and includes automatic temperature compensation allowing for that all-important, reliable, level measurement even when conditions within the application are changing. The optional all-Teflon sensor enables the LIT25 to provide level measurement for chemical applications and all ultrasonic sensors are available with optional intrinsic safety approvals for installation in hazardous rated locations. 

To find out more about the LIT25, contact us today.

  • Low Cost
  • Isolated 4-20mA Output (1000 ohm)
  • Large LCD Display
  • Programmable Signal Relay
  • Non-Contacting Ultrasonic Sensor or Optional Pressure Sensor
  • Built-in 2-Key Calibrator
  • Watertight, Dust-tight Enclosure
General Specifications
Spec name: Description:
Electronics Enclosure NEMA4X (IP 66) polycarbonate with clear, shatterproof cover
Accuracy ±0.25% of range or 2 mm (0.08 in); whichever is greater
Display Large 19 mm (0.75 in) high, 4-digit LCD
Calibration Selectable Level or Range mode. Enter min. and max. distance in centimeters or inches.
Programming Built-in 2- button keypad with menu selection. Calibration parameters are permanent when stored, even through a power interruption.
Power Input 100-130 V AC 50/60 Hz, 5 W maximum
Outputs Isolated 4-20mA, 1000 ohm load maximum
Signal Relay 1 Relay, rated 120-240 V AC or 24 V DC, 1 A, programmable for level alarm, echo loss alarm, pump control, or temperature alarm
Temperature compensation Temperature probe inside the level sensor for high accuracy in changing temperatures
Operating Temperature (Electronics) -25 °C to 60 °C (-13 °F to 140 °F )
Approximate Shipping Weight 2.7 kg (6 lbs)

PZ32T Sensor Specifications
Spec name: Description:
Maximum Range 9.8 m (32 ft)
Deadband (Blanking) Programmable, Minimum 304.8 mm (12 in)
Beam angle 8° Locate 304.8 mm (12 in) from tank sidewall for every 3 m (10 ft) depth
Operating Frequency 42 kHz
Exposed Materials PVC and Teflon
Operating Temperature -40 °C to 65 °C (-40 °F to 150 °F)
Operating Pressure 1.38 bar (20 psi) maximum
Sensor Cable RG62AU coaxial, 7.6 m (25 ft) standard length
Options
Options: Description:
Sensors All Teflon construction, flange mount, 15 m (50 ft) range
Hazardous Locations Intrinsically safe sensors CSA rated Class I, II, III, Div. I, II, Groups C, D, E, F, G
Sensor Cable 15.2 m (50 ft) or 30.5 m (100 ft) RG62AU coaxial continuous from Sensor - or splice up to a total of 152.4 m (500 ft) length
Sensor Cable Junction Box Watertight NEMA4 steel with connection terminal strip
Power Input 200-250 V AC 50/60 Hz, 12 V DC or 24 V DC
Enclosure Panel Mount Flange assembly mounts standard enclosure
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