Description
Single Channel Turbidity Probe
High precision probe for direct installation into pipelines and vessels measuring NIR light absorption (turbidity) of various liquid samples. The optical path length can be individually configured to meet the process control requirements with the highest accuracy.
Used For
- Absorbance Scale:
- CU (concentration units)
- Turbidity based
- phase separation control (beer / milk, milk / water)
- inlet separator control
- cell density in fermentation (OD, AU, TCD, CC, WCW, DCW)
Typical Applications
Fermentation
Brewing Yeast Management
The AS16-N is a precision absorption probe, which is designed for direct installation into pipelines and vessels and provides accurate concentration measurements with remarkable repeatability, linearity and resolution. A wide selection of different optical path lengths and insertion depths combined with optional calibration filters and electro-polished stainless steel housing meet all requirements of the biotechnology industry.
The AS16-N uses light from 730-970 nm to measure solids concentration independent from color or color changes.
| AS16-N | ||
|---|---|---|
| Schematic | 
No window gaskets used |
|
| Measurement | ||
| Measurement principle | 1- Channel Absorption of light | |
| Measurement wavelength(s) | AS16-N:730 – 970 nm | |
| Detector(s) | 1 silicon photodiode (hermetically sealed) | |
| Measuring Range | AS16-N:
any measuring range between 0 – 0.05 to 6 CU |
|
| Optical path length | 1, 5, 10, 20 or 40 mm | |
| Calibration | CU (concentration units) application specific calibration | |
| Light source | special incandescent tungsten lamp 5.0 V DC, 970 mA
typical life span: 3 to 5 years (25,000 to 40,000 hours) |
|
| Resolution | < ± 0.05 % of respective measuring range | |
| Repeatability | < ± 0.5 % of respective measuring range | |
| Linearity | < ± 1 % of respective measuring range (specific to application) | |
| Protection | all optical parts have an IP rating of IP65 or higher | |
| Process Adaption | ||
| Material | wetted parts: stainless steel 1.4435 (SS 316 L) dF < 1 %, BN2
surface: electro-polished Ra < 0,4 μm housing: stainless steel 1.4571 (SS 316 Ti) |
|
| Port connection | thread G1-1/4 in., ISO 228/1 for port AS25 (similar Ingold-port)
diameter: 25 mm ( D= 25 H7) O-ring groove for 30 mm and for 60 mm port length |
|
| Port gasket | O-ring 18.64 x 3.53 mm EPDM (FDA / USP Class VI) | |
| Insertion depth | 35 mm (1.38 in.) + OPL at a port length of 60 mm (2.36 in.)
135 mm (5.31 in.) + OPL at a port length of 60 mm (2.36 in.) |
|
| Process pressure | 10 mbar to 20 bar (0.15 psi to 290 psi) | |
| Windows | Sapphire (seal-less) | |
| Installation accessories |
|
|
| Temperature Ratings | ||
| Process temperature | permanent:0 – 100 °C (32 – 212 °F)
peak 60 min/day:0 – 150 °C (32 – 302 °F) peak 90 min/day:0 – 130 °C (32 – 266 °F) |
|
| Ambient temperature | operation:0 – 40 °C (32 – 104 °F)
transport:-20 – 70 °C ( -4 – 158 °F) |
|
| Calibration | ||
| Calibration adapter | none | |
| Calibration adapter VB | Filter adapter FH03 for calibration filter used for sensor verification | |
| Pressure and temperature ratings specified herein may be subject to limitations – see instruction manual. The appropriate choice of material for all wetted parts is the sole responsibility of the user. Data given are subject to changes without prior notice. | ||
