Insertion Turbidity Probe Model AP2


The turbidity probe model AP2 measures the NIR- absorption caused by turbidity in liquids.

Configurable to measure:

ppm, mg/l, EBC, FTU, g/l, %, AU, Ext, OD, ….

Measuring principle Turbidity Probe:

The probe uses the principle of NIR- absorption to detect turbidity in liquids. An LED light source with emission in the near-infrared range and a high-precision receiver diode are installed in the sensor’s optics.
The measurement in the infrared spectrum ensures precise measurement results, unaffected by fluctuations in product color.

Insertion Probe Model AP2
Trübungsmesssystem AP2/C1
Turbidity Probe Model AP2

Properties Turbidity Probe Model AP2:

Calibration / maintenance interval typically 12 months (depending on application):
– Less maintenance and longer service life.
– Service life of the LED light sources, typically 5 years.
Probe material typically stainless steel 1.4404 (optional titanium, Hastelloy, …):
– The wetted parts  of the probe are made of stainless steel.
-Other materials such as titanium or Hastelloy are optionally available.
Measuring window: Sapphire (optionally borosilicate, Plexiglas, …):
– Sapphire is used as the window material.
– Other materials such as borosilicate or Plexiglas are optionally available.
Sealing material: FKM (optionally FFKM, EPDM, silicone, …):
– The seals are made of FKM.
– Seals made of other materials such as FFKM, EPDM or silicone are optionally available.
Process connection:
Installation through ball valve in process line.
– Tuchenhagen Variline measuring cell, probe with Varivent plate.
– DIN or Ansi flange on the probe shaft.
Measuring range span: 0 – 0.1 AU up to 0 – 5 AU:
-The measuring range extends from 0 to 0.1 absorption units up to 0 – 5 absorption units.