Two-Wire Loop-Powered OEM TDR Level Transmitter


Tek-Flex 4100B is a Two-Wire Loop-Powered OEM TDR Level Transmitter for measuring distance, level, volume and mass of liquids, solids. Its simple, compact design allows service technicians to quickly assemble the probe and attach it to a threaded connection. It is an affordable solution for applications that do not require a high level of accuracy and is also an excellent alternative to traditional level controls such as RF Capacitance, conductive, DP transmitters.

  • 2-wire loop-powered level meter for liquids and solids
  • For general-purpose use (non-hazardous areas)
  • Measuring range up to 20 m/65.6 ft (liquids) and 10 m/32.8 ft (solids)
  • Easy menu navigation without opening the housing
  • Probes and process connections are made of stainless steel
  • For process temperatures up to 100°C/210°F and pressures up to 16 barg/232 psig
ApplicationLevel and volume measurement of liquids, pastes, powders and granulates
Measuring PrincipleTDR (time domain reflectometry)
ConstructionMeasuring probe attached directly to a signal converter
Ambient Temperature-40 to +176°F / (-40 to +80°C)
Storage Temperature-60 to +185°F / (-50 to +85°C)
Protection CategoryIP66
HousingPolyester-coated aluminum
Cable EntryM20 x 1.5 (plastic cable gland included) or ½ NPT (without cable gland)
Power Supply (Terminals)14 to 30 VDC
Measured VariableTime between the emitted and received signal
Output Signal4 mA to 20.5 mA
User Interface OptionsLCD Display
water industry

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