Explosion Proof Guided Wave Radar Level Transmitter


Featuring TDR (Time Domain Reflectometry) technology, the Tek-Flex 4100A Explosion Proof Guided Wave Radar Level Transmitter provides continuous level measurement in liquids, solids, and slurries. This innovative device has almost no installation restrictions in tanks, silos, and bins up to 65 feet in height. The Tek-Flex 4100A has a fully isolated 4-20 mA output that can be scaled for tank level or distance. The unit requires 18 to 30 VDC power. The Tek-Flex 4100A is shipped precisely pre-calibrated for the customer’s application and thus ensures quick installation and setup. TDR technology is not affected by pressure, vacuum, temperature, viscosity, foam, or dust. Changes in dielectric constants or coating of the probe do not affect the level measurement, due to the dynamic sensing technology programmed into the artificial intelligence of the Tek-Flex 4100A level transmitter.

  • Revolutionary TDR Technology
  • Auto calibration to any dielectric
  • Precise continuous level measurement
  • Measures liquids, slurries, and solids
  • Highly robust measurement due to the 4-wire design
  • Signal analysis and constant disturbance signal suppression
  • Optional NEMA 7 enclosure for Class 1 Div 1 areas
  • Measures up to 65 feet
  • Pre-calibrated from factory for easy installation
  • High temperature applications
  • Programmable fail safe mode
  • Economically priced
ServiceWater/Wastewater Industry and Chemical Industry
Wetted Materials316 SS, PTFE
Rangesup to 10′ with minimum dielectric constant of 0.3
Accuracy± 0.039” ( 1 mm) or 0.02% of measured distance, whichever is greatest
Repeatability±0.02″ (0.5 mm)
Temperature LimitElectronics: -40 ºF to 158 ºF (-40 °C to 70 ºC)
 Process/Probe: -40 ºF to 398 ºF (-40 °C to 203 ºC)
Pressure Limits-14.50 PSI to 580 PSI
Power Requirement24 VDC <3W
Output Signal4 mA to 20 mA
Process Connection¾” NPT
Enclosure RatingNEMA 6
Mounting OrientationVertical
FailsafeUser selectable to 3.8 mA, 4 mA, 20 mA, 20.2 mA or last signal
Agency ApprovalsExplosion Proof
water industry

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