Ultrasonic Level Measurement
Compact transmitters for non-contact level measurement of fluids,
pastes and coarse bulk materials
Application
• Continuous, non-contact level measurement in fluids,
pastes, sullages and coarse bulk materials
• System integration via 4 to 20mA
• Maximum measuring range:
– 1½" sensor: 16 ft (5 m) in fluids
6 ft (2 m) in bulk materials
– 2" sensor: 26 ft (8 m) in fluids
11 ft (3.5 m) in bulk materials

Features and benefits

• Quick and simple commissioning via menu-guided
local operation with four-line plain text display
• Envelope curves on the local display for simple
diagnosis
• Linearization function (up to 32 points) for conversion
of the measured value into any unit of length, volume
or flow rate
• Non-contact measurement method minimizes service
requirements
• Installation possible from thread 1½ NPT or G 1½“
upwards
• Integrated temperature sensor for automatic
correction of the temperature dependent sound

velocity

Reference operating
conditions
• Temperature = +68 °F (20 °C)
• Pressure = 15 psi abs. (1013 mbar abs.)
• Humidity = 50 %
• Ideal reflective surface (e.g. calm, smooth fluid surface)
• No interference reflections within signal beam
• Set application parameters:
– Tank shape = flat ceiling
– Medium property = liquid
– process conditions = calm surface
Measured value resolution 0.04 in (1 mm)
Pulse frequency max. 0.5Hz
The exact values are dependent on the type of device and the parameter settings.
Measuring error Typical specifications for reference operating conditions (include linearity, repeatability, and hysteresis):
±0.12 in (±3 mm) or 0.2% of set measuring distance (empty calibration)1