ULM70 Ultrasonic level indicator

ULM70 Ultrasonic level indicator for liquids and bulk-solid materials. In open or closed vessels, open channels and wells.

ULM70 Ultrasonic level indicator for liquids and bulk-solid materials. In open or closed vessels, open channels and wells.
Measuring principle ultrasonic
Measuring range up to 20 m.
Output signal 4÷20 mA - HART
Process connection threaded 1" Gas - 1" 1/2 Gas or flanged
Materials transducer PVDF 
Temperature up to 90°C
On request ATEX version intrinsic safety 
Price from € On request

The ULM70 Ultrasonic level meters are compact measurement devices including an electroacoustics converter, central processor unit and display module.
Using the electroacoustics converter, the level meters transmit the sequence of ultrasonic pulses that spread towards the surface level.
The converter recuperates reflected acoustic waves that are subsequently processed in the electronic module.
The intelligent evaluation block filters out interfering signals, compares the cleaned received signal with the false reflection map (e.g. from mixers, ladders, reinforcement etc.) and selects a suitable reflection (echo).

Based on the period during which the individual pulses spread towards the surface level and back and based on the measured temperature in the tank, the instant distance to the surface level is calculated.
According to the level height, the level meter output is set and the measured value is displayed on the display.
The Ultrasonic level meters are suited to level measurement of various liquid materials, sewerage waters, mash and paste materials, suspensions in closed or open vessels, sumps, reservoirs and open channels.
In case the level of bulk-solid materials is measured, the measurement range is reduced.


• For continuous non-contact level measurement
• Suited to level measurement of various liquid and bulk-solid materials
• Outstanding contrast OLED display
• Easy adjustment without measured material
• Quick view measured values on the display
• Current output (4÷20 mA) with HART communication protocol
• On request Atex version for usage in explosive areas 

Technical Characteristics

Measuring principle:
    • Ultrasonic
    Measuring range / adjustment:
      • 0.15÷2 | 0.25÷6 | 0.4÷10 | 0.5÷20 [m]
      Outputs available:
        • 4÷20 [mA]
        • 4÷20 [mA] \ HART®
        Operating voltage [V]:
          • 18÷30 Vdc
          • 18÷36 Vdc
          • [up to the model]
          Pressure max:
            • 1 [Bar]
            Operating temperature:
              • -30÷+60 [°C]
              • -30÷+70 [°C]
              Process connection:
                • Threaded: 1" GAS | 1½" GAS
                Materials in contact with the media:
                  • PVDF
                  Degree of protection:
                    • IP67
                      • ATEX Declaration
                      • EC Declaration of Conformity