Datasheet summary
Memosens Wave CAS80E
Engineering summary from PDF text extraction for Memosens Wave CAS80E. Verify every value with the OEM datasheet.
Summary
Product identification
The Memosens Wave CAS80E is a spectrometer designed for water analysis. It utilizes UV-VIS spectroscopy (200 to 800 nm) to measure various parameters.
Application
The CAS80E is suitable for reliable measurements and efficient process monitoring in:
- Drinking water
- Wastewater
- Surface water
It can measure the following parameters:
- SAC (Spectral Absorption Coefficient)
- TOCeq (Total Organic Carbon equivalent)
- CODeq (Chemical Oxygen Demand equivalent)
- BODeq (Biochemical Oxygen Demand equivalent)
- Turbidity (TU/TSS)
- Nitrate (NO₃-N, NO₃)
- APHA Hazen color
Features and Benefits
- Optimally adapted to process conditions.
- Available with 3 different measuring path lengths (2 mm, 10 mm, 50 mm).
- Titanium version available for demanding applications.
- Sapphire window for extended operating life.
- Data conditioning within the spectrometer for minimal interference during signal transmission.
- Short response time and early detection of load peaks.
- "Plug and play" functionality with standardized Memosens technology.
- Long maintenance intervals due to compressed air cleaning option.
- Application-specific and customer calibrations possible.
Function and system design
Measuring principle
The spectrometer employs a two-beam principle with lamp change compensation. A Xenon strobe lamp emits light, which passes through the medium in a measurement gap and is then analyzed by the spectrometer module. The instrument measures the substance-specific absorption of electromagnetic radiation to determine measurement parameters from the recorded spectrum.
The absorption (A) is calculated as: A = -log₁₀ (I/I₀) = ε . c . d where:
- I is the measuring spectrum intensity
- I₀ is the zero spectrum intensity (measured in ultrapure water)
- ε is the extinction coefficient
- c is the concentration
- d is the measurement gap length
Analytical models programmed into the spectrometer calculate concentrations from absorption spectra. These models account for "cross-sensitivities" between different parameters.
Measuring system
A complete measuring system typically includes:
- Memosens Wave CAS80E spectrometer
- Liquiline CM44x transmitter
- Assembly (e.g., Flowfit CYA251 flow assembly)
Communication and data processing
The CAS80E uses Memosens technology for digital communication with a compatible transmitter. Data such as manufacturer details, calibration data, and operating history are stored within the sensor and automatically transferred to the transmitter upon connection. This enables easy calibration independent of the measuring point and facilitates predictive maintenance.
Measured variables and ranges
The achievable measuring range depends on the water matrix and application. The selection of the optical measuring path length influences the measuring range.
Wastewater treatment plant inlet
| Measured variable | 2 mm gap (0.08 in) | 10 mm gap (0.4 in) | 50 mm gap (1.97 in) |
|---|---|---|---|
| TSS | 0 to 10,000 mg/l | 0 to 2,000 mg/l | 0 to 400 mg/l |
| SAC | 0 to 1,000 1/m | 0 to 200 1/m | 0 to 40 1/m |
| CODeq | 0 to 20,000 mg/l | 0 to 4,000 mg/l | 0 to 800 mg/l |
| TOCeq | 0 to 8,000 mg/l | 0 to 1,600 mg/l | 0 to 320 mg/l |
| BODeq | 0 to 5,000 mg/l | 0 to 1,000 mg/l | 0 to 200 mg/l |
Wastewater treatment plant outlet
| Measured variable | 2 mm gap (0.08 in) | 10 mm gap (0.4 in) | 50 mm gap (1.97 in) |
|---|---|---|---|
| Turbidity | 0 to 4,000 FAU | 0 to 800 FAU | 0 to 160 FAU |
| TSS | 0 to 5,000 mg/l | 0 to 1,000 mg/l | 0 to 200 mg/l |
| SAC | 0 to 1,000 1/m | 0 to 200 1/m | 0 to 40 1/m |
| CODeq | 0 to 3,000 mg/l | 0 to 600 mg/l | 0 to 120 mg/l |
| TOCeq | 0 to 1,200 mg/l | 0 to 240 mg/l | 0 to 48 mg/l |
| BODeq | 0 to 450 mg/l | 0 to 90 mg/l | 0 to 18 mg/l |
| Nitrate NO₃-N | 0 to 2,500 mg/l | 0 to 500 mg/l | 0 to 100 mg/l |
| APHA Hazen true | 0 to 12,500 Hazen | 0 to 2,500 Hazen | 0 to 500 Hazen |
| APHA Hazen apparent | 0 to 12,500 Hazen | 0 to 2,500 Hazen | 0 to 500 Hazen |
Drinking water
| Measured variable | 2 mm gap (0.08 in) | 10 mm gap (0.4 in) | 50 mm gap (1.97 in) |
|---|---|---|---|
| Turbidity | 0 to 4,000 FAU | 0 to 800 FAU | 0 to 160 FAU |
| TSS | 0 to 5,000 mg/l | 0 to 1,000 mg/l | 0 to 200 mg/l |
| SAC | 0 to 1,000 1/m | 0 to 200 1/m | 0 to 40 1/m |
| SSK | 0 to 1,000 1/m | 0 to 200 1/m | 0 to 40 1/m |
| TOCeq | 0 to 2,000 mg/l | 0 to 400 mg/l | 0 to 80 mg/l |
| Nitrate NO₃-N | 0 to 2,500 mg/l | 0 to 500 mg/l | 0 to 100 mg/l |
| Nitrate NO₃ | 0 to 10,000 mg/l | 0 to 2,000 mg/l | 0 to 400 mg/l |
| APHA Hazen true | 0 to 12,500 Hazen | 0 to 2,500 Hazen | 0 to 500 Hazen |
| APHA Hazen apparent | 0 to 12,500 Hazen | 0 to 2,500 Hazen | 0 to 500 Hazen |
Surface water
| Measured variable | 2 mm gap (0.08 in) | 10 mm gap (0.4 in) | 50 mm gap (1.97 in) |
|---|---|---|---|
| Turbidity | 0 to 4,000 FAU | 0 to 800 FAU | 0 to 160 FAU |
| TSS | 0 to 5,000 mg/l | 0 to 1,000 mg/l | 0 to 200 mg/l |
| SAC | 0 to 1,000 1/m | 0 to 200 1/m | 0 to 40 1/m |
| CODeq | 0 to 5,000 mg/l | 0 to 1,000 mg/l | 0 to 200 mg/l |
| BODeq | 0 to 750 mg/l | 0 to 150 mg/l | 0 to 30 mg/l |
| Nitrate NO₃-N | 0 to 2,500 mg/l | 0 to 500 mg/l | 0 to 100 mg/l |
Electrical
Electrical connection
- Connection is via M12 plug or wire end ferrules to a transmitter input.
- Maximum cable length: 100 m (328.1 ft).
- The device cable must be shielded.
Performance characteristics
Reference operating conditions
- Temperature: 20 °C (68 °F)
- Pressure: 1013 hPa (15 psi)
Drift over 100 days (in % of end of measuring range)
See the official PDF for exact tabulated values, as these vary significantly by measured variable and application area (Wastewater Inlet, Wastewater Outlet, Drinking Water, Surface Water).
Limit of detection (Quantification)
The limits of quantification vary by measured variable and gap width. See the official PDF for exact tabulated values across different application areas (Wastewater Inlet, Wastewater Outlet, Drinking Water, Surface Water).
For example, in Wastewater Treatment Plant Inlet:
- TSS: 66.7 mg/l (2 mm gap), 13.3 mg/l (10 mm gap), 2.7 mg/l (50 mm gap)
- CODeq: 33.3 mg/l (2 mm gap), 6.7 mg/l (10 mm gap), 1.35 mg/l (50 mm gap)
In Drinking Water:
- Nitrate NO₃-N: 3.5 mg/l (2 mm gap), 0.7 mg/l (10 mm gap), 0.15 mg/l (50 mm gap)
- Turbidity: 42.5 FAU (2 mm gap), 8.5 FAU (10 mm gap), 1.7 FAU (50 mm gap)
Installation
- Install the device where the measurement gap is rinsed by the medium flow and air bubbles are properly removed.
- Avoid areas with air pockets or foam.
- Ensure easy access for maintenance.
- Mount securely and vibration-free.
- For horizontal installations, ensure the device is not pointed downwards to allow air bubbles to escape.
- A cleaning unit (accessory) is recommended to keep optical windows clear.
Environment
- Ambient temperature range: –20 to 60 °C (–4 to 140 °F)
- Storage temperature: –20 to 70 °C (–4 to 158 °F)
- Degree of protection: IP 68 (1 m (3.3 ft) water column over 60 days, 1 mol/l KCI), Type 6P / NEMA 6P (for housing material 1.4404/1.4571)
- Electromagnetic compatibility (EMC): Complies with EN 61326-1, EN 61326-2-3, EN 61326-2-5, and NAMUR NE21.
Process
- Process temperature range: 0 to 50 °C (32 to 122 °F)
- Process pressure range: 0.5 to 10 bar (7.3 to 145 psi) (absolute)
- Minimum flow: No minimum flow required, but sufficient mixing is necessary for media prone to deposits.
Mechanical construction
Design, dimensions
The spectrometer features a measurement gap with standard widths of 2 mm (0.08 in), 10 mm (0.4 in), and 50 mm (1.97 in). Spectrometers with 1 mm (0.04 in) and 100 mm (3.9 in) gap widths are available upon request.
Dimensions vary slightly based on the gap width. See the official PDF for detailed diagrams and measurements.
Weight
- 1.6 kg (3.5 lb), without cables.
Materials
- Wetted materials: Stainless steel (1.4404 / AISI 316L, 1.4571 / AISI 316Ti) or titanium (3.7035).
- Optical windows: Quartz glass or sapphire.
- O-rings: EPDM.
- Process connections: G1 and NPT ¾".
Accessories
A range of accessories are available, including:
- Assemblies: Flexdip CYA112, Flowfit CYA251, CAV01.
- Holders: Flexdip CYH112.
- Cleaning: Cleaning brushes, compressed air cleaning kits, compressors.
- Other: Sensor adapters, spray nozzles, 32GB SD cards.
Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.