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Optical Sensor For Absorption Measurement
EXcell 241
EXcell 241 is a high precision digital NIR absorbance sensor for DN25-weld in sockets that monitors biomass measurement in biotech, food, and pharma applications for both lab and industrial production processes.
Last Updated: June 26, 2024
EXcell 241
NIR Biomass Sensor DN25
The EXcell 241 is a high precision digital NIR-absorbance sensor for DN25-weld in sockets that monitors biomass in biotech, food, and pharmaceutical applications. The sensor is a reliable, robust, and cost-efficient measuring device for typical industrial fermentation vessels thanks to its stainless steel construction, non-wearing sapphire windows, LED technology and integrated digital amplifier. 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 store, export and graphically display the measured data. There are also interfaces for Modbus RS485 and for 0-20mA current output available.
A G1 1/4″ thread connects the sensor to the weld-in socket. To ensure the most sterile installation, the O-ring position can be freely selected based on the existing socket.
Your benefits
- EBC / FAU / mg/l / AU / OD or customer defined units
- Design for DN 25 weld-in sockets
- Includes 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
| Technical Specifications* | *Subject to change without notice | |
|---|---|---|
| Measuring range | 0...6 AU, 0...6600 EBC | |
| Resolution | 0,1 % or 0,01 AU | |
| Accuracy | ± 1 % | |
| Reproducibility | ≤ 1 % from final value | |
| Wavelength | 850 nm | |
| Light source | LED | |
| Optical path length | 5 / 10 / 20 mm | |
| Immersion length | 70-85 mm / 110-125 mm | |
| Wetted material | Stainless steel 1.4435 (316L) | |
| Surface | Ra <0.37 µm e-polished | |
| Measuring window | Sapphire | |
| Process connection | Thread G1 1/4 | |
| 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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