Description
Single Wavelength VIS Absorption Sensor
High precision sensor for direct installation into pipelines measuring VIS or NIR light absorption of various liquid samples. Wavelength and optical path length can individually configured to meet the process control requirements with the highest accuracy.
Used For
- Color scales:
- APHA / HAZEN / Pt/Co color
- ASTM (D1500) color
- EBC color
- ASBC color
- Gardner (ASTM D1544) color
- Color control
- for interface detection
- in industrial waste water
- for metal concentration in plating industry
- of Haemoglobin, e.g., medical / pharmaceutical
Typical Applications
Color and Concentration
ASBC / EBC Beer Color Measurements
Color and Concentration
Phase Separation
Identification / Detection
The model AF16-F is a single channel absorption sensor designed for inline applications. It accurately measures color or color changes and can be used in a variety of industrial processes, from sanitary CIP/SIP applications to high pressure, high temperature industrial applications. The AF16-F uses light in the wavelength range from 385 to 1000 nm at selected wavelengths. Optical path lengths (OPL) are available from 1 to 1000 mm for process versatility.
| -F | ||
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| Schematic | 
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| Measurement | ||
| Measurement principle | 1- Channel Absorption of light | |
| Measurement wavelength(s) | 385, 400, 430, 525, 750, 1000 nm, others on request | |
| Detector(s) | 1 silicon photodiode (hermetically sealed) | |
| Measuring Range | any measuring range between
0 – 0.05 to 2.8 CU (dependent on filter used) (contact product specialist for application specific ranges) |
|
| Optical path length | 1 – 1000 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 | |
| Sensor Body | ||
| Material | Stainless steel 1.4435 (SS 316L), 1.4539, 1.4571 (SS 316Ti), 1.4462, Titanium 3.7035 (Grade 2), Hastelloy 2.4602 (C22), Plastic TFM4215, PVC, … others on request | |
| Line size | 1/8 in. to 6 in. (DN 6 to DN 150), … others on request | |
| Process connection | Flanges (ASME, DIN, JIS), Clamps (TC, ISO, DIN), Female Threads (NPT, DIN), Sanitary Threads (DIN 11851), Tube Ends (DIN, ISO, OD), Varivent, … others on request | |
| Process pressure | 10 mbar to 100 bar (0.15 psi to 1450 psi) – higher on request depending on process connection, materials and design | |
| Windows | 1-Pyrex®, 2-Sapphire, 3-Sapphire Biotech | |
| Window gaskets | Silicone (FDA), Viton® (FDA), EPDM (FDA / USP Class VI), Kalrez® 4079, … others on request | |
| Temperature Ratings | ||
| Process temperature | permanent: 0 – 120 °C ( 32 – 248 °F)
peak 15 min/day: 0 – 150 °C ( 32 – 302 °F) |
|
| Process temperature OPTION HT |
permanent: -30 – 240 °C (-22 – 464 °F)
peak 15 min/day: -30 – 260 °C (-22 – 500 °F) |
|
| Process temperature OPTION EX |
permanent: -30 – 120 °C (-22 – 248 °F)
peak 15 min/day: -30 – 150 °C (-22 – 302 °F) |
|
| Process temperature OPTION EX-HT |
permanent: -30 – 240 °C (-22 – 464 °F)
peak 15 min/day: -30 – 260 °C (-22 – 500 °F) |
|
| Ambient temperature | permanent: 0 – 40 °C ( 32 – 104 °F)
operation: -30 – 40 °C (-22 – 104 °F) with options HT / EX / EX-HT transport: -20 – 70 °C ( -4 – 158 °F) |
|
| Explosion Proof | ||
| Ex-proof | none | |
| Ex-proof OPTION EX (EN-D) |
Sensor assembly in ex-proof version accor. ATEX (EN-D) | |
| Ex-proof OPTION EX (FM-D) |
Sensor assembly in ex-proof version accor. FM (FM-D) | |
| 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. | ||
Product Variants
AF16-HT-VB-F
AF16-EX-HT-VB-F
Process temperature OPTION HT
permanent: -30 – 240 °C (-22 – 464 °F)
peak 15 min/day: -30 – 260 °C (-22 – 500 °F)
Ex-proof OPTION EX (EN-D)
Sensor assembly in ex-proof version accor. ATEX (EN-D)
Ex-proof OPTION EX (FM-D)
Sensor assembly in ex-proof version accor. FM (FM-D)
C4000 – C8000 Product Information
