VisiTrace mA L1

VisiTrace mA is an ideal dissolved oxygen sensor for brewing filtration and filling as well as power plant boiler feed water monitoring. Use VisiTrace mA to simplify calibration, configuration, and maintenance for strong process reliability.

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  • VisiTrace m A Dissolved oxygen sensor

VisiTrace mA L1 Details

VisiTrace mA is an optical dissolved oxygen (DO) sensor specifically designed for reliable trace-level oxygen monitoring in brewery and power plant applications. Building on Hamilton's proven optical DO sensor technology, VisiTrace mA delivers accurate and stable dissolved oxygen measurements from 0.8 to 2000 ppb, enabling precise monitoring during critical process steps such as filtration, filling, and boiler feed water analysis.

The sensor is delivered ready-to-use without the need for polarization, enabling rapid startup and immediate measurement availability. Compared to conventional amperometric dissolved oxygen sensors, VisiTrace mA provides flow-independent measurements, fast response times, and requires significantly less maintenance.

The sensor features a 4–20 mA output with digital HART communication for seamless integration into process control systems. An integrated Bluetooth 5 wireless interface may be used for sensor monitoring, configuration, and calibration. Global approvals including ATEX, IECEx, CSA, UL, and FM make the sensor suitable for hazardous and explosive environments worldwide.

The replaceable ODO Cap simplifies maintenance and sensor servicing. The specially developed ODO Cap L1 is designed for trace-level dissolved oxygen measurements and provides resistance against standard disinfectant solutions containing active chlorine and chlorine dioxide. This design enhances durability and ensures reliable long-term operation in demanding brewery and power plant environments.

Combining reliable trace-level measurement performance, low-maintenance operation, advanced optical sensing technology, and global hazardous-area approvals, VisiTrace mA provides a robust solution for long-term dissolved oxygen monitoring in applications where even very low oxygen concentrations are critical.

Common applications Water, Energy, & Environment, Power Generation, Chemical Processes, Petrochemicals, Oil & Gas Processing, Agri-Food and Beverage

Optimize operations using low-maintenance dissolved oxygen sensors with rapid response times.

Prevent oxidation and preserve quality with dissolved oxygen sensing down to trace (ppb) levels.

ATEX, and IECEx certified, with CSA approval for North American hazardous locations (Class I, II, III)

Precision Low-PPB Oxygen Measurement

  • VisiTrace mA is specially crafted for dissolved oxygen measurement in brewing applications like filtration and filling.
  • Accurately measures dissolved oxygen in the low ppb range.
     
Scientific Citations

  • I could not be more pleased with my experience with Hamilton!

    My company has been using Hamilton probes for years and have always been happy with their performance! The team is always very helpful in trouble shooting issues and answering any questions that we may have about our probes. Overall, I could not be more pleased with my experience with Hamilton!

    Abigail Mann
    Bioprocessing Fermentation Associate at Heliae Development

VisiTrace mA L1 Specifications

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Process Connection PG13,5
Sensor Family VisiTrace mA
Wetted Parts Stainless Steel 1.4435
EPDM (Ethylene propylene elastomer)
VMQ (Silicone elastomer)
See compliance details in Material Specification document
Electrical Connector M12
Sensor Output 4 to 20 mA / HART
Measuring Range At 25°C and 1013 mbar total gas pressure
0.8 ppb to 2000 ppb (in liquid)
20 ppm to 49'000 ppm (in gas)
0.02 to 50 mbar(pO2)
Electrolyte None
Accuracy at 25 °C ± 0.5 ppb or 2 % whichever is greater
Drift at Room Temperature < 1 % per week @ 100 ppb
Sensor Cap ODO Cap L1
Oxygen Consumption None
Temperature Sensor NTC 22 kOhm
Configurable Values Dissolved Oxygen (DO): mbar; %-sat; %-vol; µg/l; mg/l; ppb/ppm (gas); ppb/ppm; Temperature: °C, °F, K
Surface Quality of Steel Ra < 0.4 µm (N5)
4 to 20 mA Current Range 3.5 to 22 mA
Analog Interface 1 Two wire sink 4 to 20 mA for DO, programmable
4 to 20 mA Accuracy < 0.3 % + 0.05 mA
Transmitting Power Max. 4 dBm
Digital Interface Bluetooth 5.0
HART Protocol 7
Operating Voltage 18 to 30 VDC
Serial Number Yes
Response Time t90% < 20 s in gas; < 90 s in water
Certificate Yes, with measured current in oxygen
ATEX Approval ll 1 G Ex ia llC T3/T4/T5/T6 Ga; II 1 D Ex ia IIIC T135°C Da
IECEx Approval ll 1 G Ex ia llC T3/T4/T5/T6 Ga; II 1 D Ex ia IIIC T135°C Da
Diameter 12 mm
Autoclavable Yes
Steam Sterilizable Yes, max. Temperature 140 °C
CIP Yes
Operating Temperature Range -10 to 140 °C; the sensor provides no DO reading above 85 °C
Pressure Range bar g -1 to 12 bar
Protection Rating IP68
Required Flow None

Compatibility with Hamilton Devices

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VisiTrace mA L1 Resources

Browse app notes, user guides, specification documents, and more in our Knowledge Center.

Browse app notes, user guides, specification documents, and more in our Knowledge Center.

Browse app notes, user guides, specification documents, and more in our Knowledge Center.

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Sensor Security with Operator Level S Password

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Arc Sensors - Signal Averaging

Certain applications may introduce conditions that create fluctuating or "noisy" measurements. The noisy measurement can make process control challenging. One way to improve signal stability is to adjust the moving average setting using ArcAir software.
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Article

Optical dissolved oxygen sensor caps compatibility

There are several different options for optical dissolved oxygen (ODO) caps. This article provides recommendations for each product.

Browse app notes, user guides, specification documents, and more in our Knowledge Center.

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FAQ

Does carbon dioxide sparging impact my DO measurement?

CO2 sparging will not impact the DO measurement using an optical DO sensor. CO2 can impact traditional polarographic DO sensors over time thus more frequent electrolyte replacement may be needed.
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FAQ

How should I store my optical dissolved oxygen sensor?

Optical DO sensors should be stored in a clean, dry environment prior to use. Avoid prolonged exposure of the inside cap to ambient light to minimize photodecomposition of the luminophore.
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FAQ

When should I calibrate my DO sensor?

The frequency of calibration will depend upon the duration of process runs and the accuracy required for process control. In bioreactor applications calibration can be performed before sterilization; however many customers choose to calibrate after sterilization as well.
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