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Endress+Hauser Memosens COL37E Digital Oxygen Sensor
COL37E digital oxygen sensor for checking online measuring loops and analyzing grab samples in surface water, wastewater, and process water.
Optical oxygen measurement with a range of 0 to 330 %SAT.
C-shaped optical cap designed to prevent interference from air bubbles.
Electrolyte-free optical technology eliminates polarization time and simplifies handling.
Memosens 2.0 digital connection supports plug-and-play operation and traceable sensor data.
TPT24 specializes in instrumentation and measurement equipment and offers technical consultation and quotation support for Endress+Hauser products.
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Description
Endress+Hauser Memosens COL37E Digital Oxygen Sensor
The Endress+Hauser COL37E digital oxygen sensor is designed for convenient oxygen measurements in surface water, wastewater, and process water. Available through tpt24.com, this optical sensor is particularly useful for checking online measuring loops, analyzing grab samples, and carrying out regular measurements at selected process points.
Its optical measuring principle supports straightforward handling and maintenance, while the Memosens 2.0 connection provides digital data transfer and convenient sensor handling. With a measuring range of 0 to 330 %SAT, the COL37E is suited to the intended field and laboratory sampling applications.
Key Benefits of the COL37E Digital Oxygen Sensor
Simple Handling with Optical Measurement
The COL37E uses optical oxygen measurement without electrolytes or polarization time. This simplifies preparation before measurement and removes the need to manage electrolyte during routine handling.
Its seamless design also makes cleaning easier. In addition, the robust optical spot is designed for a long service life and stable measurement performance, helping users carry out regular checks with less maintenance effort.
C-Shaped Optical Cap
The flow-free C-shaped optical cap is designed to eliminate interference from air bubbles. This feature is useful when taking measurements in field environments where bubbles could otherwise affect the measurement process.
Fast Response and Temperature Compensation
The COL37E provides a very fast response to changes in oxygen concentration, helping operators obtain timely information during field checks. Its integrated Pt1000 temperature sensor supports temperature compensation and temperature registration.
The integrated Pt1000 temperature sensor supports temperature compensation for reliable oxygen measurements. Read our article on How Temperature Affects Dissolved Oxygen Measurements to understand how temperature influences dissolved oxygen readings.
Memosens 2.0 Digital Technology
The digital Memosens 2.0 connection supports plug-and-play handling with compatible measuring instruments. The sensor stores information such as its serial number and calibration history in tamper-proof form, helping users maintain measurement traceability and quality management records.
The COL37E uses optical technology for convenient dissolved oxygen measurement without electrolytes or polarization time. Learn more in our article on Dissolved Oxygen Measurement Technologies: Optical vs. Polarographic to understand the key differences between these measurement methods.
Measuring Range and Technical Highlights
The COL37E digital oxygen sensor has a measuring range of 0 to 330 %SAT and uses an optical measuring principle. Its stainless steel construction, 12 mm diameter, and 120 mm shaft length support practical handling during laboratory measurements and random sampling in the field.
The specified process temperature range is minus 5 to plus 60 degrees Celsius. The specified process pressure is 1 bar, and the sensor is not intended for continuous measurement directly in the process.
The sensor features an inductive digital connection head using Memosens 2.0 technology and has an IP68 ingress protection rating. Before use, confirm that the measurement conditions and compatible equipment match the manufacturer’s requirements.
Applications in Surface Water, Wastewater, and Process Water
The COL37E is intended for oxygen measurements in different water environments. Its portable design makes it suitable for checking selected measurement points without requiring a permanent installation at each location.
Surface water: Check oxygen values during field monitoring.
Wastewater: Verify oxygen readings at selected treatment process points.
Process water: Perform routine checks where oxygen measurement is required.
Aeration tanks: Check oxygen levels as part of wastewater process monitoring.
Fish farms: Measure oxygen values to support water condition checks.
Online measuring loops: Compare field measurements with installed online monitoring systems.
Grab samples: Analyze samples on-site or in a laboratory.
These applications benefit from convenient handling and timely measurement results. The appropriate sampling procedure and operating conditions should always be considered when interpreting oxygen measurements.
Installation and Measurement Considerations
The COL37E is designed for laboratory measurements and random sampling in the field rather than continuous in-process measurement. Before use, check that the sample temperature and pressure remain within the specified limits and that the sensor is compatible with the intended measuring instrument.
The optical design avoids the need for electrolytes and polarization time, simplifying preparation for routine checks. Nevertheless, appropriate cleaning, handling, and measurement procedures remain important for obtaining consistent results across different sampling locations.
Traceability and Quality Management
The sensor’s stored serial number and calibration history support traceability and documentation. These records can help operators review measurement history and maintain consistent quality management practices during routine oxygen checks.
Why Buy the COL37E Digital Oxygen Sensor from TPT24?
TPT24 specializes in instrumentation and measurement equipment for industrial applications. Through tpt24.com, customers can request quotations and technical consultation for Endress+Hauser products according to their measurement requirements.
When selecting an oxygen sensor, consider the water type, sampling procedure, required measuring range, operating temperature, and compatibility with the measuring instrument. TPT24 can support the equipment selection process by helping clarify these requirements before procurement.
Request a Quote for the COL37E Digital Oxygen Sensor
Reliable oxygen measurements help operators assess water conditions and verify online monitoring systems. The COL37E combines optical measurement, convenient handling, a bubble-interference-reducing cap design, and Memosens 2.0 digital technology for its intended sampling applications.
For the Endress+Hauser COL37E digital oxygen sensor, visit tpt24.com to request a quotation and discuss your instrumentation requirements with TPT24.
Specifications
| Specification | Details |
|---|---|
| Measuring principle | Optical oxygen measurement |
| Application | Measurements in the field of surface water, wastewater and process water |
| Characteristic | Agile digital Memosens 2.0 optical oxygen sensor for laboratory measurements and random sampling in the field |
| Measuring range | 0 to 330 %SAT |
| Material | Stainless steel |
| Dimension | Diameter: 12 mm (0.47 inch) Shaft length: 120 mm (4.72 inch) |
| Process temperature | –5 to +60 ˚C (23 to 140 ˚F) |
| Process pressure | 1 bar, not intended for continuous measurement in process |
| Temperature sensor | Pt1000 |
| Connection | Inductive, digital connection head with Memosens 2.0 technology |
| Ingress protection | IP68 |






