
Specs at a glance
-
Measurement range
0.01 to 20 mg/l / 0.1 to 50 mg/l NO3-N
0.04 to 80 mg/l / 0.4 to 200 mg/l NO3
0 to 50 1/m / 0 to 250 1/m / 0 to 1000 1/m SAC
0 to 75 mg/l / 0 to 375 mg/l / 0 to 1500 mg/l COD/BOD (254nm)
0 to 30 mg/l / 0 to 150 mg/l / 0 to 600 mg/l TOC/DOC (254nm) -
Process temperature
5 to 50°C (41 to 120 °F)
Field of application
Viomax CAS51D is a smart sensor that allows unattended operation in a wide range of process conditions. Just immerse it into your process and measure. The sensor's unique design is extremely robust and it is also low-maintenance thanks to its self-cleaning functionality. With Memosens digital technology, CAS51D combines maximum process and data integrity with simple operation. It enables lab calibration and simplifies predictive maintenance.
Viomax CAS51D measures nitrate or SAC in drinking water, process water and wastewater applications as well as the utilities sector:
Organic load or nitrate in inlet and outlet
Determination of CODeq or TOCeq
Monitoring, control and optimization of treatment processes
Nitrate monitoring in the aeration basin and denitrification stage
Benefits
Cost-effective: Easy, chemical-free handling is safe, environmentally friendly and saves on operational expenditure.
Extremely fast response time: Measured value processing in the sensor provides reliable real-time process information.
Fast and easy commissioning: Sensor comes precalibrated and preconfigured ex factory.
Enables unattended plant operation: Intelligent design and automatic air-cleaning functionality maximize availability and minimize maintenance.
Perfect adaption to open basins: Fast and flexible sensor positioning with Flexdip CYH112 holder and CYA112 assembly system.
Perfect adaption to pipes: Various flow cells allow easy plant integration.
Extended selection
-
High-end products
- Highly functional and convenient
Technical excellence
Simplicity

-
Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
-
Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
-
Measuring principle
UV photometric
-
Characteristic
Insitu (immersion in process), extractive with sample and flow cell
Optical photometric sensor for nitrate and SAC -
Size
388 / 394 mm x 40 mm, depends on version
-
Design
40 mm sensor, stainless steel 316L
-
Process temperature
5 to 50°C (41 to 120 °F)
-
Ambient temperature
-20 to 60 °C (-4 to 140 °F)
-
Specials
G1, NPT3/4
IP68 (1m/3,3ft) water column with 1N KCl during 60d ays -
Application
Drinking water, biological waste wate process, WWTP effluent
Monitoring of surface water -
Measurement range
0.01 to 20 mg/l / 0.1 to 50 mg/l NO3-N
0.04 to 80 mg/l / 0.4 to 200 mg/l NO3
0 to 50 1/m / 0 to 250 1/m / 0 to 1000 1/m SAC
0 to 75 mg/l / 0 to 375 mg/l / 0 to 1500 mg/l COD/BOD (254nm)
0 to 30 mg/l / 0 to 150 mg/l / 0 to 600 mg/l TOC/DOC (254nm)
Configure to download the CAD drawings of this product
Choose from our suggested options
-
-- selected coding-- selected label99.999,00<%label%>
-
Looking for more options? Please use the individual configurator to continue
-
-- selected coding-- selected label99.999,00<%feature%>
-
<%label%>99.999,00
-
Looking for more options? Please use the individual configurator to continue
-
Process Connection
-
<%label%>99.999,00
-
<%label%>99.999,00
-
-
<%feature%><%coding%><%label%>
-
Prices per piece
-
<%range%><%price%>
-
- Optional add-ons
Individual configuration
Often bought together
Accessories
Related products