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Dissolved Oxygen Sensor Calibration, Repair, Installation, and Device Sales

At Calibrations & Controls, we understand how critical dissolved oxygen (DO) sensors are in ensuring water quality across wastewater treatment plants, environmental monitoring systems, aquaculture, and industrial processes. A drifting or inaccurate DO sensor can lead to process disruptions, failed compliance tests, or even environmental risks.

  • Electrochemical dissolved oxygen sensor
    • Galvanic dissolved oxygen sensor
    • Polarographic dissolved oxygen sensor
    • Optical dissolved oxygen sensor

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    Buy Siemens from the Siemens Experts!

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    Siemens SITRANS F M MAG 1100

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    EMERSON ROSEMOUNT

    Your Trusted Emerson Rosemount Services Provider

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    Endress + Hauser from Calibrations & Controls

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    Endress + Hauser Proline Promag W 400
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    VEGA VEGADIF 85 Differential pressure measurement for all media

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    VEGA VEGASON 62 Ultrasonic sensor for continuous level measurement

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    Coriolis mass flowmeter CoriolisMaster FCB430 and FCB450

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    Electromagnetic Flowmeter ProcessMaster FEW630

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    Calibrate Your Dissolved Oxygen Sensors with Calibrations & Controls

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    Dissolved oxygen (DO) sensors are essential tools in wastewater treatment, aquaculture, and environmental monitoring. Whether you're optimizing aeration in a treatment plant or tracking oxygen levels in a natural water body, sensor accuracy makes all the difference. At Calibrations & Controls, we bring years of expertise in servicing DO sensors so you can trust your readings and keep your process on point.
    Our calibration services are built around industry best practices and OEM procedures. We ensure each sensor is functioning correctly, delivering reliable measurements, and fully traceable to standards that meet regulatory and operational demands.

    Professional Calibration for Optical and Electrochemical DO Sensors

    Calibrations & Controls works with major DO instrumentation brands like Hach, YSI, Endress+Hauser, and Emerson. Whether your sensors are part of a fixed monitoring station or a portable field kit, we deliver:

    • Calibration and repair of optical and electrochemical dissolved oxygen sensors

    • Cleaning and reconditioning of sensor membranes and electrodes

    • Verification against certified reference solutions for traceable results

    • Flexible service options including onsite or lab-based calibration

    • Fast turnaround times with full calibration documentation

    Bring Your DO Sensors Back in Spec

    DO sensors degrade over time due to fouling, membrane wear, or chemical exposure. We evaluate sensor health, check signal response, and restore calibration to OEM specs, helping you avoid misleading data, unnecessary downtime, or compliance issues.

    Minimize Risk and Maintain Compliance

    Inaccurate oxygen readings can result in environmental violations, process inefficiencies, or system failures. Calibrations & Controls helps you stay ahead of problems by offering:

    • Custom calibration intervals based on process demands and sensor usage

    • Detailed calibration certificates and traceability

    • Turnaround in as few as seven business days

    • Pickup, delivery, and onsite calibration available across the Upper Midwest

    • Easy tracking of service history with our calibration certificate management platform

    Dissolved Oxygen Sensor Calibration, Repair, and Maintenance

    If your DO sensors are drifting or overdue for service, it’s time to recalibrate. Request a quote, connect with our live chat, or call us at 763-972-1001. Calibrations & Controls is here to ensure your measurements are accurate, your process stays compliant, and your data always reflects the real picture.

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    Instrument Types Serviced

    Dissolved Oxygen
    Flow
    Pressure
    Level
    Temperature
    pH
    Conductivity
    Scales/Balance
    Gas Detector
    Chart Recorder
    Dissolved Oxygen
    • Electrochemical dissolved oxygen sensor
    • Galvanic dissolved oxygen sensor
    • Polarographic dissolved oxygen sensor
    • Optical dissolved oxygen sensor
    Flow
    • Magnetic flowmeters
    • Positive displacement flowmeters
    • Ultrasonic flowmeters
    • Mass flowmeters
    • Liquid flowmeters
    • Turbine flowmeters
    • Gravimetric flowmeters
    • Coriolis Flow Meter

    • Propeller Meter

    • Venturi Meter Flow

    • Viscosity Cup \ Viscosity Meter

    • Vortex Flow Meter

    • Weirs

    • Electromagnetic Flow Meter

    • Gas Flow Meter

    • Laminar Flow Meter

    • Liquid Flow Meter

    • Magnetic Flow Meter

    • Optical Flow Meter

    • Paddle Wheel Flow Meter

    • Rotometer Flow

    • Thermal Mass Flow Meter

    • Turbine Flow Meter

    • Ultrasonic Flow Gauge

    • Velocity Meter

    • Parshall Flumes

    Pressure
    • Compound Gage

    • Pressure Controller

    • Pressure Gage

    • Master Pressure Gage

    • Dead Weight Tester

    • Pressure Indicator

    • Pressure Transmitter

    • Pressure Valve

    • Pressure Transducer

    • Manometer

    Level
    • Capacitance Level Transmitter

    • Ultrasonic Level Sensors

    • Hydrostatic Level Transmitter

    • Radar Level Transmitter

    • Level Transmitter

    • Paddle Switch Level

    • Float Switch Level

    Temperature
    • Thermometer

    • RTD

    • Thermocouple

    • Infrared and Handheld

    • Dry Block

    • Furnace

    • Bath

    • Temperature Oven

    pH
    • Combination Sensor
    • Differential Sensor
    • Consumer-grade ph sensor
    • Lab-grade pH sensor
    • Micro pH sensor
    • Spear tip pH sensor
    • Industrial pH sensor
    Conductivity
    • Contacting-type conductivity meter
    • Electrode-less conductivity meter
    Scales/Balance
    • One-pan balances
    • Torbal Torsion balance
    • Precision balance
    • Analytical balance
    • Mechanical scales
    • Digital scales
    Gas Detector
    • Hand Held Gas Detector

    • 4 Gas Multi Gas Detectors

    • Pellistor/Catalytic Bead (CB) Industrial Gas Detectors

    • Lower Explosive Level (LEL) Gas Detector

    • Point/Non-Dispersive Infrared (PIR/NDIR) Industrial Gas Sensors

    • O2 Gas Detector

    • Open Path Infrared (OPIR) Industrial Gas Sensors

    • Tunable/Enhanced Laser Diode Spectroscopy (TLDS/ELDS) Gas Sensor

    • Electrochemical (EC) Gas Detectors

    • CO2 Gas Detectors

    • LEL Gas Detector

    • Ultrasonic Gas Leak Detectors (UGLD)

    • Micro-electromechanical (MEMS)-Based Gas Detectors

    • CL2 Gas Detector

    Chart Recorder
    • Galvanometer Instruments
    • Potentiometric (Servo) Instruments
    • Digital Chart Recorders
    • Strip Chart Recorders
    • Circular Chart Recorders
    • XY Recorders
    • Hybrid Recorders
    • Paperless Recorders
    Flow
    • Magnetic flowmeters
    • Positive displacement flowmeters
    • Ultrasonic flowmeters
    • Mass flowmeters
    • Liquid flowmeters
    • Turbine flowmeters
    • Gravimetric flowmeters
    • Coriolis Flow Meter

    • Propeller Meter

    • Venturi Meter Flow

    • Viscosity Cup \ Viscosity Meter

    • Vortex Flow Meter

    • Weirs

    • Electromagnetic Flow Meter

    • Gas Flow Meter

    • Laminar Flow Meter

    • Liquid Flow Meter

    • Magnetic Flow Meter

    • Optical Flow Meter

    • Paddle Wheel Flow Meter

    • Rotometer Flow

    • Thermal Mass Flow Meter

    • Turbine Flow Meter

    • Ultrasonic Flow Gauge

    • Velocity Meter

    • Parshall Flumes

    Pressure
    • Compound Gage

    • Pressure Controller

    • Pressure Gage

    • Master Pressure Gage

    • Dead Weight Tester

    • Pressure Indicator

    • Pressure Transmitter

    • Pressure Valve

    • Pressure Transducer

    • Manometer

    Level
    • Capacitance Level Transmitter

    • Ultrasonic Level Sensors

    • Hydrostatic Level Transmitter

    • Radar Level Transmitter

    • Level Transmitter

    • Paddle Switch Level

    • Float Switch Level

    Temperature
    • Thermometer

    • RTD

    • Thermocouple

    • Infrared and Handheld

    • Dry Block

    • Furnace

    • Bath

    • Temperature Oven

    pH Meter
    • Combination Sensor
    • Differential Sensor
    • Consumer-grade pH sensor
    • Lab-grade pH sensor
    • Micro pH sensor
    • Spear tip pH sensor
    • Industrial pH sensor
    Conductivity
    • Contacting-type conductivity meter
    • Electrode-less conductivity meter
    Dissolved Oxygen
    • Electrochemical dissolved oxygen sensor
    • Galvanic dissolved oxygen sensor
    • Polarographic dissolved oxygen sensor
    • Optical dissolved oxygen sensor
    Scales & Balance
    • One-pan balances
    • Torbal Torsion balance
    • Precision balance
    • Analytical balance
    • Mechanical scales
    • Digital scales
    Gas Detector
    • Pellistor/Catalytic Bead (CB) Industrial Gas Detectors

    • Lower Explosive Level (LEL) Gas Detector

    • Point/Non-Dispersive Infrared (PIR/NDIR) Industrial Gas Sensors

    • Open Path Infrared (OPIR) Industrial Gas Sensors

    • Tunable/Enhanced Laser Diode Spectroscopy (TLDS/ELDS) Gas Sensor

    • Electrochemical (EC) Gas Detectors

    • Ultrasonic Gas Leak Detectors (UGLD)

    • Micro-electromechanical (MEMS)-Based Gas Detectors

    Chart Recorder
    • Galvanometer Instruments
    • Potentiometric (Servo) Instruments
    • Digital Chart Recorders
    • Strip Chart Recorders
    • Circular Chart Recorders
    • XY Recorders
    • Hybrid Recorders
    • Paperless Recorders

    CALIBRATION

    Choose from our comprehensive calibration services, available both on-site and remotely. Regular maintenance and calibration are essential for ensuring the accuracy and optimal performance of your measuring instruments

    ✔    On-site calibrations

    ✔    Remote calibrations

    ✔    Advanced calibrations

    Learn more

    INSTRUMENT SALES

    Discover cost-effective and adaptable solutions tailored to meet your device and parts requirements.



    ✔    Brand agnostic

    ✔    Value oriented pricing

    ✔    Manufacturer discounts

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    REPAIR

    Are you struggling with a device that just won't cooperate, no matter what steps you've taken or professionals you've hired? That's where our expertise can make a difference


    ✔    Experienced technicians

    ✔    Same day repairs

    ✔    Warrantied labor

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    CERTIFICATES

    Access, download, and share your current and previous calibration certificates effortlessly. Bookmark the page for convenient access anytime you need it.

    ✔    Secure web hosting

    ✔    Mass download

    ✔    Multi user access

    Learn more

    INSTALLATION

    Experience a seamless installation process with the expertise of our professionals. Our team will handle the installation and calibration of the device to ensure a swift setup, getting you up and running in no time."

    ✔    Expedited installation

    ✔    Value oriented pricing

    ✔    Warrantied labor

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    CAPABILITIES

    We provide comprehensive instrumentation services, covering a wide range of devices related to flow, pressure, temperature, pH, conductivity, dissolved oxygen,, and more.

    ✔    Full service

    ✔    Large variety of brands

    ✔    Servicing all industries

    Learn more

    ​Hundreds of organizations, both big and small, are certifying ​their instruments with Calibrations & Controls.

    Calibration Service Levels

    Calibration Plan ElementsBasic CalibrationAdvanced CalibrationUltimate CalibrationCompetition
    Delivery Method
    Onsite or labOnsite or labOnsite or labOnsite or lab
     Calibrated to manufacturer's specifications or customer requirements
    Baseline verification
    Calibration certificate
    Calibration label on instrument
    Online certificate database
    Calibration using manufacturer 's verificator or traceable standard
    Detailed Calibration Data
    4-20 mA Calibration
    Program Audit Recommendations
     Custom Programs and Schedules
    Dedicated Account Representative

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    Curious about pricing? Get a quote today.

    Are your instrument measurements accurate? Get an NIST traceable instrument calibration to certify your device.

    NIST Traceable Calibrations

    Full Range of Brands & Manufacturers

    Online Calibration Certificates

    On-site Calibrations

    Expedited Calibration Services Available

    Brand/Manufacturer Specific Calibration

    Questions? Call us at 763-972-1001.

    instrument calibration

    Permitted & Accredited by Minnesota Commerce Department Weights & Measures

    instrument calibration

    NIST Handbook 44 Compliant

    Ready? Get your device calibrated. Questions? Lets talk.

    Our professional techs are standing by.

    CONTACT US
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    or call 763-972-1001.