iPr-FS Refractometer


Inline Process Refractometer with Certified Hygienic Design

The EHEDG (European Hygienic Engineering and Design Group) certified iPR FS comes with a measuring range of up to 85 Brix (refractive index 1.5200) and is EHEDG certified making it suitable for almost all applications in food and beverage production. Available with VariVent or APV connection.

The unique hygienic design makes the iPR FS ideal for food and beverage industry applications. The measuring head can be installed in pipes, reactors, vessels, and mixing tanks, using different weld-in flanges. The VariVent joint system allows easy installation with a plug-in clamping method.

An optional cleaning nozzle or an ultrasonic cleaning device is available for processes requiring the sensor face cleaning. The iPR FS is equipped with two switch outputs to run a connected valve (max. 1A, 24 DC) or relay making it possible to control the cleaning of the measuring prism via a magnetic valve.

User scales Up to 4 scales temperature compensated (e.g. RI, Brix, Honey)
Measuring range refractive index 1.3200 – 1.5200 RI
Resolution refractive index 0.00001 RI
Measuring range Brix 0 – 85 Brix (automatic temperature correction 10 °C – 50 °C)
Resolution Brix 0.01 Brix
Precision refractive index / Brix +/- 0.00014 RI/ +/- 0.1 Brix
Temperature precision +/- 0.2°C
Temperature resolution +/- 0.01°C
Process temperature 0 °C to + 90° C
Ambient temperature -10 °C to + 50 °C
Process contact material sapphire; stainless steel, PEEK
Max. pressure 10 bar (1 MPa)
Power supply 24 V DC < 75 mA (20 V – 28 V)
Light source 589 nm LED
Analog data output 2 x 4 – 20 mA analog outputs
Digital output Two digital limit switches (up to 1 A). One serial communication via RS232, RS485 (configurable), or USB
Display As an accessory: can be used next to the iPR or several meters away
Software Configuration program for serial output, analog output, monitoring of measured values, and saving
Process connection optional: VariVent-Inline (Tuchenhagen) or APV-Inline (APV)
Other options Prism cleaning unit
Dimension 256.6 mm x 136 mm ( length x diameter)
Weight 3790 g

Accessories, Spares, Calibration and Training