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Setting the K-factor for weighing applications with flow meters. This video explains it.

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Triflex LNI250

Non-intrusive level sensor

for conductive products

The Triflex LNI 250 is designed to measure the level on the outside of a non-metallic tank without physical contact with the product. The LNI 250 incorporates the unique FTC technology (Field Time Control). This is a new innovative technology where an electric field is generated between multiple transmitting electrodes and a receiving electrode. The cycle time of the FTC level sensor changes as soon as a product intervenes this electric field. Multiple electrodes are embedded to detect the level of relative high dielectric material (εv ≥ 4). The Triflex LNI 250 transmitter does not require moving parts or product contact that may be subject to failure situations. Applications with a sensor with FTC Technology provide a more reliable and cost effective solution.
Schematic overview Triflex LNI250


  • Save time and costs in easy installation:
    -Single button setup.
    -No tank nozzles required.
  • New FTC technology.
  • Non-intrusive installation, no risks of leakage or overspill.
  • Virtually no maintenance, no moving parts.
  • Easy access maintenance without shutting down your processes, save time and costs!
  • Fault detection according to Namur NE43 for fast error solving.
  • Auto calibration, unaffected by product quality changes: reliable results ALL the time.
  • Sensor status indication for easy reference.
  • Available in 30cm measuring length.
  • Software tool (Linux based) available as accessory to calibrate the Triflex.

Power Supply

  • 12 - 34V DC (Loop powered).

Alarm Outputs

  • One solid state relais, which is triggerd by a high or low level alarm.

Analog Outputs

  • The analog output is a passive 2-wire 4 - 20mA signal (loop powered) according to the measured level indication.

The Triflex LNI 250 is applicable for measuring conductive products with a dielectric constant greater then 4.
The Triflex LNI 250 is specially designed for non-intrusive level applications of bulk solid products. It is ideal for situations where it is undesirable or impossible to make an entry into a plastic or glass storage vessel or for aggressive or contamination sensitive products.

Triflex LNI 250
Triflex on a petfood dryer