Pulsar IMP+ Ultrasonic Level Sensor

Pulsar IMP+ Ultrasonic Level Sensor can be used wherever you need reliable non-contacting ultrasonic level measurement and digital echo processing means IMP+ 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.

There is an IMP+ ultrasonic level sensor to suit your application, 3m, 6m and 10m range versions are available and each can be wired for 2-wire and 3-wire operation. IMP+ features a LCD display and digital temperature measurement and compensation. IMP+ also has 2 relay outputs as standard.

Pulsar IMP+ Ultrasonic Level Sensor Features

2-Wires Configuration features

  • 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

3-Wires Configuration features

  • All 2-wire version features plus:
  • Backlit LCD display
  • 0-10V analogue output
  • 2 relays: single pole two way, 1A 30VDC/AC
  • Power consumption with relays energised <60mA (less 12mA/relay not energised)
  • Active and passive 4-20mA outputs

Pulsar IMP+ Ultrasonic Level Sensor Specifications


Dimensions: 186mm ø height x 133mm ø diameter (5.24 x 7.32in)
Cable entry: 2 off cable glands 4.5 -10mm (Torque to 2NM)
Mounting: 1.5” BSP/NPT (IMP3 & IMP6), 2” BSP/NPT (IMP10)
Weight: Nominal 1kg (2.2lb)


Model: Measurement range: Operating frequency: Beam angle (-3dB half power):
IMP3 0.2 – 3m (0.66 – 10ft) 125kHz <10° inclusive
IMP6 0.3 – 6m (0.98 – 20ft) 75kHz <10° inclusive
IMP10 0.3 – 10m (0.98 – 33ft) 41kHz <10° inclusive


Enclosure protection: IP67
Max. and min. temperature (ambient): -40°C to +65°C (-40°F to +149°F)
Max. and min. temperature (process): -40°C to +80°C (-40°F to +176°F)


CE approval: Listed in the Certificate of Conformity within the manual


Input voltage range: 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 (±0.5°C accuracy). Level and volume conversion are installed allowing linearisation for tank shapes.
PC Interface: All parameters can be accessed and changed through PC Suite software. Echo traces may be viewed on screen.

Download Datasheet: IMP+ Pulsar Ultrasonic Level Sensor 

Reference: pulsar-pm.com

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