IMP Lite Pulsar Level Measurement

IMP Lite can be used wherever you need reliable non-contacting ultrasonic level measurement and digital echo processing means IMP Lite is perfect for slurries or liquids and anywhere you need a display telling you the level, or an analogue output to interface with your site control system or drive a display. The full IMP range is available with the wetted parts in PVDF build alternative for corrosive or aggressive applications.

Compact and low-profile

When used on battery power for intermittent (wake-up) applications, IMP Lite's high speed boot up of circa 3 seconds maximises battery life. For example, if an IMP Lite were switched on every 15 minutes for a 3 second reading, average current is a mere 40µA.

Active and passive (sourcing and sinking) analogue outputs assist with system integration, especially when retro-fitting into older installations.


  • 2-wire configuration
  • RJ11 Port
  • Up to 10m range available



Dimensions:175mm (6.9in) overall height x 130mm (5.12in) diameter
Cable Entry:2 off 16mm (0.63in) cable glands 3.5-10mm (0.14-0.39in) cable dia
Mounting:1.5” (3m/10ft) and 6m/20ft) range versions), 2” (10m/33ft version) universal thread - suits BSP and NPT, parallel and tapered
Weight:Approximately 1kg (2.2lbs)


Temp. range (process):­-40ºC to +80ºC (-40ºF to +176ºF)
Temp. range (ambient):-20ºC to +65ºC (-4ºF to +149ºF)
IP Rating:IP67


Beam Angle (-3dB half power):<10º inclusive
Operating Frequency:125kHz
Measurement Range:0.2-3m (0.66ft-10ft)
Beam Angle (-3dB half power):<10º inclusive
Operating Frequency:75kHz
Measurement Range:0.3m-6m (0.98ft - 20ft)
Beam Angle (-3dB half power):<10º inclusive
Operating Frequency:41kHz
Measurement Range:0.3m-10m (0.98ft-33ft)


Input Voltage:11-30V, 3.5 - 22mA
Accuracy:±0.25% or 6mm/0.24in (whichever is greater)
Resolution:± 0.1% or 2mm/0.08in (whichever is greater)
4-20mA Outputs:Resolution 5µA (both active and passive outputs)
Temperature Compensation:Via internal temperature sensor (±0.5ºC accuracy). Level and volume conversion are installed allowing linearisation for tank shapes
2-wire Configuration:

RS232 (RJ11 port) connection for diagnostics and software updates

4 digit LCD display

4 button keypad for parameter entry

Power consumption: 3.5 - 22mA

Passive 4-20mA output

No flammable atmosphere approval

PC Interface-PC Suite:All parameters can be accessed and changed through PC Suite software. Echo traces may be viewed on screen.

Download Datasheet: IMP Lite Pulsar Level Measurement

Reference :

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