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LTDR Level Transmitter

Level measurement independent of changing process conditions (density, conductivity, temperature, pressure,…)
Innovative signal analysis and disturbance signalsuppression
Almost no installation restrictions Different types of probes: single rod, coaxial and rope probe, interchangeable thanks to its modular design
Suitable for almost every liquid. Exceptional performance in liquids with low dielectric constant (i.e. low reflectivity) such as oils and hydrocarbons
Suitable for solids, mainly with rope probe version. Unmatched price / performance ratio.
Measuring range: 

Single rod probe: 100 ... 3000 mm
Coaxial probe: 100 ... 6000 mm
Rope probe: 1000 ... 20000 mm

Rosca G¾A or G1A threaded connection
EN 1092-1 DN40 flange or bigger

Materials: EN 1.4404 (AISI 316L), PEEKTM
4-20 mA output

1 x programmable transistor output for level detection

ATEX version

More info


Level measurement in tanks/storage silos

Water and waste water treatment

Food and beverage industry

Chemical, petrochemical and car industry

Other info

Working principle

LTDR uses TDR (Time Domain Reflectometry) technology. Low-energy, high-frequency electromagnetic impulses,
generated by the sensor’s circuitry, are propagated along the probe which is immerged in the liquid to be measured. When
these impulses hit the surface of the liquid, part of the impulse energy is reflected back up the probe to the circuitry which then
calculates the fluid level from the time difference between the impulses sent and the impulses reflected. The sensor can
output the analyzed level as a continuous measurement reading through its analog output, or it can convert the values into freely
positionable switching output signals. LTDR Sensors are also known as Guided Radars or Guided Wave Radars.

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