Description
Single Channel VIS Absorption Probe
The AS16-F is a high precision absorption probe for direct installation into pipelines and vessels measuring visible (VIS) light absorption in liquid samples. Wavelength and optical path length can be individually configured to meet the process control requirements with the highest accuracy.
Used For
- Color scale:
- CU (concentration units)
- Color control
- for beer / water phase separation
Typical Applications
Brewing Yeast Management
Fermentation
The AS16-F 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 are available combined with optional calibration filters. The AS16-F uses a specific wavelength in the visible (VIS) spectrum to measure color in liquids with little or no turbidity.
Additionally, NIST-traceable calibration accessories provide absolute measurement confidence.
| AS16-F | ||
|---|---|---|
| Schematic | 
No window gaskets used |
|
| Measurement | ||
| Measurement principle | 1- Channel Absorption of light | |
| Measurement wavelength(s) | AS16-F:430, 550 or 620 nm | |
| Detector(s) | 1 silicon photodiode (hermetically sealed) | |
| Measuring Range | AS16-F:
any measuring range between 0 – 0.05 to 2 CU (depending on wavelength) |
|
| 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. | ||
