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EXcell 261 is a high-precision digital NIR backscatter sensor for DN25 weld-in sockets for monitoring biomass measurement in biotech, food and pharmaceutical applications. Its stainless steel design, standard DN25 weld-in socket and wear-free sapphire windows, LED technology and integrated digital amplifier make it a reliable, robust, cost-efficient and unique measuring device for typical industrial fermentation vessels, whereby different measuring units for turbidity (Arb.Unit) and mass g/l (baker's yeast) can be displayed or even a customized measuring unit can be selected.
The EXpert parameterization software enables convenient and simple sensor parameterization. Measured values can also be displayed graphically and can be saved and exported. Various communication interfaces are available for USB, RS485 Modbus or for 4...20mA current output.
The sensor is attached to the weld-in socket via a G1 1/4" thread, whereby the O-ring position can be freely selected according to the existing socket to enable the best possible sterile installation.
| Measuring range: | 0...100 arb.Unit / 0...300 g/l (cell dry weight yeast) |
|---|---|
| Resolution: | 0,01 arb.Unit |
| Accuracy: | ± 1,5 % from measurement value |
| Reproducibility: | ≤ 1 % from final value |
| Wave length: | 850 nm |
| Light source: | LED |
| Immersion length: | 70 mm / 110 mm |
| Wetted material: | Stainless steel 1.4435 (316L) |
| Surface: | Ra <0.37 µm |
| Measuring window: | Sapphire |
| Process connection: | thread G1 1/4 |
| Process temperature: | 0...90 °C, 135 °C max. 1 hour (SIP cycle) |
| Process pressure: | max. 16bar (232psi) |
| Electrical coonection: | Fischer Core Series |
| Cable length: | 2 m / 5 m |
| Interfaces: | USB, RS485 Modbus, 4...20 mA |
| Protection class: | IP68 |
