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EXcell 251 is a high-precision digital NIR backscatter sensor for monitoring production processes in the biotech, food and pharmaceutical industries. Its 12mm stainless steel design and wear-free sapphire windows make the EXcell 25 a reliable and intelligent sensor with integrated digital amplifier. The measured turbidity values can be output via the ‘Arb.Unit’ unit or customer-specific units. The sensor can be conveniently parameterised on a PC using the associated EXpert software, and the measurement data can be recorded and displayed graphically. A Modbus RS485 interface and an additional 4-20mA interface are also available.
The sensor is attached to the process via a PG13.5 thread. The installation dimensions on the process side correspond to a standardized pH sensor. The EXcell 231 sensor can therefore also be used in conjunction with probe housings and fully automatic cleaning systems.
In combination with our proven EXtract 8XX series retractable probe housings and the associated EXmatic 470/471 control unit (fully automatic), automatic cleaning is also possible under process conditions and thus offers safe use even in the most difficult applications.
| 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 |
| Shaft length: | 120 / 220 / 320 / 420 mm |
| Wetted material: | Stainless steel 1.4435 (316L) |
| Surface: | Ra <0.37 µm |
| Measuring window: | Sapphire |
| Process connection: | Thread PG13,5 |
| 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 |
