Applicable for Upstream + Downstream

Optical Sensor For Absorption Measurement

EXspect 231

EXspect 231 is a high-precision, compact NIR sensor used to monitor production processes in the food and pharmaceutical industries, as well as in a wide range of other process applications.

Last updated: January 12, 2023

EXspect 231

NIR absorption sensor in compact design

The EXspect 231 is a high-precision, compact NIR sensor that can be perfectly adapted to the particular measuring task. It is used to monitor production processes in the food and pharmaceutical industries as well as in many other process applications. With an integrated digital measuring amplifier and touch play, the sensor is reliable thanks to its stainless steel construction and non-wearing sapphire windows.

The measuring units can be output in percent turbidity, absorption, or common turbidity units depending on the type of sensor, and a maximum measuring range of 0…6 AU is available, which can be output via the standard interface of 4…20 mA. Different switching outputs are available, and there are two alarm limits that can be programmed.

The sensor can easily be adapted to the specific measuring task using the EXpert parameterisation software. For all measuring ranges, optical filters from the EXcap 110 filter series are available to test and calibrate the sensor.

Your benefits

Technical Specifications*
*Subject to change without notice
Measuring range max.0-100 % / 0...6 AU / 0...6600 EBC
Resolution0,1 % or 0,01 AU
Accuracy± 1 % from measurement value
Reproducibility≤ 1 % from final value
Wavelength850 nm
Light sourceLED
Optical path length5 / 10 / 20 mm
Wetted materialStainless steel 1.4435 (316L)
SurfaceRa <0.37 µm e-polished
Measuring windowSapphire
Supply voltage24 V DC
ContactNO or NC configurable 150 mA
Input contactZeroing
Process connectionThread G1/2"
Process temperature-10...90 °C, 135 °C max. 1 hour (SIP cycle)
Process pressureMax. 10 bar (150 psi)
Electrical connectionM12 connector 5-pin or 8-pin (digital parameterisable)
Interfaces4 ... 20 mA
ParameterisationSoftware EXpert
Protection glassIP69

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