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Optical sensor for absorption measurement
EXcell 231
EXcell 231 is a high precision digital NIR-absorbance sensor with a 12mm hygienic design that monitors biomass measurement in biotech, food, and pharma applications for both lab and industrial production processes.
Last updated: June 26, 2024
EXcell 231
NIR Biomass Sensor Ø12mm
The EXcell 231 is a high precision digital NIR-absorbance sensor for monitoring production processes in the biotech, food, and pharmaceutical industries. The sensor is intelligent and reliable thanks to its 12mm stainless steel construction and non-wearing sapphire windows. Different measuring units, such as EBC, FAU, mg/l, AU, OD or customer-specific units, can be issued for mass, turbidity, and absorbance. The associated EXpert software makes it simple to parameterise the sensor on a PC, and it also allows you to record and graphically display the measured data. There are also interfaces for Modbus RS485 and a 0-20mA output with an integrated display for the measured value available.
Through a PG13.5 thread, the sensor is attached to the process. The mounting dimensions on the process side fit a common pH sensor. As a result, the sensor can be used in conjunction with fully automatic cleaning systems and probe housings.
Automatic cleaning under process conditions is also possible with the proven retractable probe housings of the EXtract 8XX series and the associated EXmatic 470 control unit (fully automatic), providing reliable use even in the most difficult applications.
Your benefits
- EBC / FAU / mg/l / AU / OD or customer defined units
- Standardised 12 mm design with integrated amplifier
- No traditional transmitter necessary
- Wearless sapphire windows, CIP/SIP-capable
- Hygienic design, autoclavable
- Maintenance free due to LED light source
- Data output directly on PC, Modbus RS485 or 0...20 mA
- Easy parametrisation with EXpert software
- Usable with retractable housings for automated sensor cleaning
| Technical Specifications* | *Subject to change without notice | |
|---|---|---|
| Measuring range | 0...6 AU, 0...6600 EBC | |
| Resolution | 0,01 AU | |
| Accuracy | ± 1 % | |
| Reproducibility | ≤ 1 % from final value | |
| Wavelength | 850 nm | |
| Light source | LED | |
| Optical path length | 5 / 10 / 20 mm | |
| Shaft length | 120 / 225 / 325 / 425 mm | |
| Wetted material | Stainless steel 1.4435 (316L) | |
| Surface | Ra <0.37 µm e-polished | |
| Measuring window | Sapphire | |
| Process connection | Thread PG13,5 | |
| Process temperature | 0...90 °C, 135 °C max. 1 hour (SIP cycle) | |
| Process pressure | Max. 10 bar (150 psi) | |
| Electrical connection | Fischer Core Series | |
| Cable length | 2 m / 5 m | |
| Interfaces | USB, RS485 Modbus, 0...20 mA with switching output | |
| Protection glass | IP68 | |
Need more information?
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