OxyGold G Arc 225

Part # 243111

The OxyGold G Arc polarographic dissolved oxygen sensors are a great solution for trace part-per-billion oxygen measurement combined with Arc intelligent sensor technology. Industry standard 4 - 20mA and Modbus outputs allow the OxyGold G to be directly connected to the PCS control system with no need for a transmitter or controller. All configuration and calibration can be accomplished through ArcAir software.

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OxyGold G Arc Details

The OxyGold G Arc is an electrochemical polarographic dissolved oxygen (DO) sensor specifically designed for demanding industrial applications requiring either reliable oxygen measurement in media containing acidic gases or highly sensitive trace oxygen monitoring. Building on Hamilton's proven electrochemical DO sensor technology, the OxyGold G Arc sensors deliver accurate, dependable dissolved oxygen measurements for specialized process applications.

Industry-standard 4 - 20mA and Modbus outputs allow the OxyGold G Arc to be directly connected to the PCS control system with no need for a transmitter or controller. Their robust electrochemical design provides reliable long-term performance in demanding industrial environments.

Designed for reliable trace oxygen measurements, OxyGold G Arc is suitable for applications requiring the detection of very low oxygen concentrations, including pharmaceutical, chemical, power generation, and semiconductor industries. The sensor is additionally designed for high-pressure process applications, providing dependable trace oxygen monitoring under demanding operating conditions

Common applications Water, Energy, & Environment, Water and Wastewater, Manufacturing

Precision oxygen measurement at trace levels.

Reliable performance in pure water and boiler feedwater applications.

Seamless integration with existing control systems.

Trace-Level Oxygen Measurement

  • Designed for low-oxygen environments like boiler feedwater and microelectronic rinse water.
  • Provides highly accurate readings to protect sensitive processes.

VP Connector Compatibility

  • Equipped with an industry-standard VP connector.
  • Ensures easy installation with most commercially available controllers.
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

OxyGold G Arc 225 Specifications

Print
Process Connection PG13,5
Sensor Family OxyGold G
Wetted Parts Stainless Steel 1.4435
EPDM (Ethylene propylene elastomer)
FKM (Fluorocarbon Elastomer)
VMQ (Silicone elastomer)
See compliance details in Material Specification document
Electrical Connector VP8
Measuring Range 1 ppb to 40 ppm (DO) or 0.02 to 1000 mbar (pO₂)
Electrolyte Oxylyte G
Accuracy at 25 °C ± 2 %
Drift at Room Temperature < 1 % per week
Membrane Cap Standard
Oxygen Consumption Ca. 100 ng/h in air at 25 °C
Temperature Sensor NTC 22 kOhm
Configurable Values Dissolved oxygen (DO): mbar, %-sat, %-vol, μg/l ppb, mg/l ppm, ppm gas; Temperature: °C, °F, K
Surface Quality of Steel Ra < 0.4 µm (N5)
Electrode system Silver platinum combination
Analog Interface 1 4 to 20 mA for DO, programmable
Analog Interface 2 4 to 20 mA for Temp., programmable
Analog Interface 1 and 2 Galvanically not isolated; pulse width modulation 3.5 kHz
Baud Rate 4800, 9600, 19200, 38400, 57600, 115200 Bd
Polarization Voltage and Time -670 ± 50 mV, ≥ 2 hours
Operating Voltage 7 to 30 VDC max. 150 mW
Serial Number Yes
Response Time t98% 30 to 60 s at 25 °C, from air to nitrogen
Certificate Yes, with parameter settings and materials used
ATEX Approval No
Diameter 12 mm
Autoclavable Yes
Steam Sterilizable Yes
CIP Yes
Operating Temperature Range Analog interface: 0 to 110 °C; Digital interface: 0 to 130 °C
Pressure Range bar g 0 to 12 bar
Max. CO₂ Partial Pressure 0.01 bar
Required Flow ≥ 0.1 m/s
Automatic Polarization Yes, max. 2 hours stabilisation time
a-length 225 mm

OxyGold G Arc 225 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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Article

Electrolyte & Membrane Replacement for Polarographic DO Sensors

This quick guide discusses how to replace the electrolyte and membrane on OxyFerm and OxyGold polarographic DO sensors.
Polarographic sensor connection

Article

Connecting Polarographic DO Sensors

This article provides a brief overview of the types of electrical connectors commonly found on polarographic dissolved oxygen sensors.
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Article

Understanding Wetted Materials (Stainless, Plastics, & Elastomers)

Wetted materials such as stainless steel, plastics, and elastomers are often listed by different names and abbreviations in different parts of the world. This quick cross reference guide helps sort out the common names for wetted materials used in Hamilton sensors.

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

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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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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 much torque is needed to install a sensor with PG13.5 threads?

Sensors with PG13.5 threads rely on the o-ring to seal against process pressure. Finger-tight (approximately 2 Newton Meter or 18 inch-lb) should be sufficient to install the sensor without leakage. Additional tightening beyond this can deform the o-ring or strip the threads.
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