Ultrasonic tank level transmitter

The sensor transmits a stream of pulses which are reflected back from the process surface . The distance to the surface is calculated using the time of flight & velocity of sound. An integral temperature sensor compensates the velocity of sound value for ambient temperature changes.

The operator can choose to view either: Distance: from the face of the transducer to the surface of the processor or: Level: from the bottom of the tank to the surface of the process or: Temperature: ambient temperature of the sensor environment.

Range is reduced when measuring solids as the granulated surface absorbs the sound wave & scatters the echo. Similar effects can happen in liquid applications if there is foam on the liquid, or turbulence caused by stirrers or vortices near pump suctions. Vapour & steam in heated tanks can also attenuate the signals. These installation issues are often solved by mounting the sensor over a stilling chamber such as a DN100 pipe. The narrow beam angle of 8° solves many installation issues but care should be taken siting the sensor so the beam does not impinge on the tank wall.

• Mercon ULT6M
• Ultrasonic tank level transmitter, 6 metre range
• Compact 2 wire ultrasonic level transmitter
• Continuous non contact level measurement
• Suitable for all liquid & some solids
• IP67 enclosure
• Lightning protection
• 4—20mA loop powered analogue output
• Other ranges up to 30 metres are available
• Robust, die cast aluminium, powder coated, electrical enclosure
• Corrosion resistant sensor, choose from ABS, PVC, PTFE, PVDF to suit your application
• Easily installed with a 2” BSP thread the unit can be fitted to a flange or mounted directly above a conveyor or pond on a bracket
• The transmitter has a large viewing window & 4 digit LCD for local indication of the process level
• There are 3 push buttons for inputting the measurement parameters & selecting process variable to be viewed
• Please contact us for prices & application advice