Mini Ultrasonic Level Sensor

Mini Ultrasonic Level Sensor

Code: LL1000_MINI



Product Description


Our miniature ultrasonic level sensor is an excellent addition to the range of level sensors we offer. Its design is compact, extending just over 2" in height above the tank or drum surface, and it has an operating range of 4" to 6' (0.10m to 1.8m).

As with all of our standard ultrasonic models, the LL1000 has a PVC housing that allows for an operating temperature range of -40°C to 60°C (-40°F to 140°F). This range can be increased to as high as 125°C (257°F) with an optional CPVC or Kynar housing.

The LL1000's microprocessor-based circuits provide a temperature-compensated signal for improved accuracy and the ability to filter false echoes produced by peripheral obstructions. On-board push buttons allow for calibration without the need for software and computers. Optional RS485 communications are available for computer interfacing and for networking up to 148 sensors.

For applications requiring a sanitary interface to the sensor, an optional 316L stainless steel transducer face with tri-clover clamp is also available.

Download LL1000 Mini Product Sheet (.pdf, 78KB)



  • Pulse ultrasonic technology
  • Non-contact measurement
  • Push-button calibration
  • Temperature compensation
  • Self-cleaning sensor face
  • Non-volatile memory (batteries not required)
  • Automatic adjustment of power and sensitivity to any environment
  • Low profile

  • Food and beverage
  • Water and wastewater
  • Chemicals and oils
  • Various liquids, slurries, and solids



±0.25% of max. target range (in air)
Beam Angle
10-12 degrees at -3 dB
Loss of Echo Hold
30 seconds, 22mA output
Temperature Compensation
Onboard the sensor
Push-button or optional programmable
Diagnostics (Echo Profile)
Via optional programmable port
High-Level Alarm
5A relay has hysteresis and delay of 5% of the tank height;
changes at full tank calibration height
0.33 ft to 6 ft (0.10m to 1.8m)
0.04" (0.98mm)
Operating Frequency
148 kHz
Operating Temperature &
Pressure Range
-40DEGC to 60DEGC (-40DEGF to 140DEGF)
1 BAR to 10 BAR
Power Options
12 to 30 VDC, 0.07A max @ 24VDC
R load = (Vs-6)/24mA

4 - 20 mA, 6.1uA resolution
Relay: DPST, 5A @ 230VAC
Optional RS485 communications port
(requires free included software)