Pro20 Dissolved Oxygen Meter

Pro20 Dissolved Oxygen Instrument

The YSI Pro20 dissolved oxygen handheld is a rugged field instrument that is also versatile enough for lab BOD testing.

Dissolved Oxygen Meter Comparison: Model 55 vs. Pro20 and Pro20i

The YSI Pro20i has replaced the discontinued YSI Model 55 dissolved oxygen handheld. This video reviews the Model 55 with the Pro20 and Pro20i, with the Pro20 offering a user-replacable cable, unlike the Pro20i and Model 55.

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Price$738.00 (US Only)

SKU6050020


In Stock 17

The Pro20 provides everything you need in a handheld dissolved oxygen meter. Its design is centered on ruggedness, reliability, and ease of use. Available YSI-compatible sensors are EPA-approved for reporting BOD, CBOD, and DO in wastewater compliance. Instrument Only.  Cables, probes/sensors, and accessories are sold separately.

Explore the ProSolo for an optical dissolved oxygen handheld.

  • Order Meter
    SKU Description Price Quantity
    6050020 Pro20 $738.00
  • Order Cables
    SKU Description Price Quantity
    605780 ProBOD - Pro Series BOD Probe $910.00
    60520-1 Pro Series DO Cable - 1 m $312.00
    60520-4 Pro Series DO Cable - 4 m $332.75
    60520-10 Pro Series DO Cable - 10 m $395.25
    60520-20 Pro Series DO Cable - 20 m $468.00
    60520-30 Pro Series DO Cable - 30 m $598.00
    60520-100 Pro Series DO Cable - 100 m $941.25
  • Order Sensors
    SKU Description Price Quantity
    605203 2003 - Pro Series Polarographic Dissolved Oxygen Sensor $229.00
    605202 2002 - Pro Series Galvanic Dissolved Oxygen Sensor $229.00
  • Order Accessories
    SKU Description Price Quantity
    605306 5908 - Replacement Standard Membrane Kit for 605203 Polarographic DO sensor $79.25
    603075 3075 - Pro Series Soft Sided Carrying Case $160.50
    603077 3077 - Flow Cell Kit, 1 or 2 Port Sensor $494.50
    603070 3070 - Shoulder strap $39.25
    EWPRO20 Extended Warranty PRO20 $110.00
    605913 5913 - Replacement Standard Membrane Kit for 605202 Galvanic DO sensor $81.25
    603074 3074 - Pro Series Hard Sided Carrying Case $371.00
    603162 6262 - Pro Series Soft Sided Small Carrying Case $116.50
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  • Overview

    The YSI Pro20 dissolved oxygen meter is a rugged, user-friendly instrument for measuring dissolved oxygen or BOD that can be used interchangeably in the lab and the field. Depending on your needs, you can choose between a Polarographic DO sensor, a Galvanic DO sensor, or a BOD probe.

    Top Features

    • User-replaceable sensors and cables
    • One Touch Cal for convenient and quick calibration
    • Choice of DO sensor (Polarographic or Galvanic) or lab BOD probe for BOD in wastewater
    • Military spec connectors, IP-67 waterproof, and 1-meter drop tested
    • Rubber over-molded case
    • Low total cost of ownership
    • Internal barometer for highest accuracy
    • 95% response in 8 seconds with standard membrane
    • Stores 50 data sets
    • Graphic, backlit display and glow-in-the-dark keypad visible with polarized sunglasses on
    • Available with 1, 4, 10, 20, 30 or 100-meter cables
    • Multiple languages including English, Spanish, French, and German
    • 3-year instrument warranty; 2-year cable warranty; 1-year polarographic sensor warranty; 6-month galvanic sensor warranty

    Polarographic or Galvanic?

    Fast response times with the Polarographic or Galvanic dissolved oxygen sensors allow you to complete your sampling routine quickly. The long life of the Polarographic sensor saves time, money, and reduces your overall cost. The Galvanic sensor enables sampling to start immediately without a warm-up period. Regardless of sensor selection, you will receive accurate, quality data!


    Please visit the Pro20 Kits page for fully assembled systems. For an integral cable assembly (not user-replaceable), YSI offers the Pro20i.

    Please visit our extensive dissolved oxygen resource page to learn about DO and BOD-related things: www.YSI.com/weknowDO.

    You can also download The Dissolved Oxygen Handbook, which covers all things DO-related, from technologies to maintenance and calibrations to acquiring the best data.

  • Specifications
    Certifications CE, 1-meter drop test, Assembled in USA, RoHS, WEEE, IP-67
    Connector MS (military spec) waterproof with bayonet lock
    Digital / Digital Sensors Analog
    Equipment used with ProBOD, ProSeries 20-x cables
    Graphic Display Graphic display with detailed Help, backlit display AND keypad
    Languages French, English, German, Spanish
    Logging Capabilities Single
    Measurement Range

    0 to 500%; 0 to 50 mg/L

    Memory 50 data sets
    Multiparameter Yes
    Parameters Measured Temperature, Dissolved Oxygen, Built-in barameter
    Power 2 alkaline C-cells provide 450 continuous hours at ambient temperature without backlight
    Sampling Yes
    Temperature

    -5 to 55°C, +/-0.3°C

    Unit of Measure Barameter-mmHg, °F, Temperature- °C, Dissolved Oxygen-%, air saturation, mg/L
    User Calibratable Yes
    User Replaceable Yes
    Warranty 3-year instrument; 2-year field cables
    Waterproof IP-67 (even with the battery cover off), floats
  • Accessories

    Pro Series Dissolved Oxygen/Temperature Field Cable

    YSI 20 Cable - DO and temperature cable assembly

    Pro Series Galvanic Dissolved Oxygen Sensor

    YSI 2002 Galvanic Dissolved Oxygen sensor for the Pro Series

    Pro Series Polarographic Dissolved Oxygen Sensor

    YSI 2003 Polarographic Dissolved Oxygen sensor for the Pro Series (Yellow Membrane Kit)

    Pro Series BOD Probe

    Self-stirring BOD probe for use with the Pro20 and Pro Plus

    Flow Cell Mounting Spike

    Flow Cell Mounting Spike

    Flow Cell, Standard, 203 mL

    Flow Cell, Standard, 203 mL

    Cable Management Kit

    Cable Management Kit

    Belt Clip

    Belt Clip

    Pro Series Hard Sided Carrying Case

    Carrying Case, Hard Sided

    Pro Series Soft Sided Carrying Case

    Carrying Case, Soft Sided

    Flow Cell, Extended Length

    Flow Cell, Extended Length

    Tripod Clamp

    Tripod Clamp

    Cap Membrane Kit 2.00 Mil PE

    Cap Membrane Kit 2.00 Mil PE (6 each), includes electrolyte (blue cap)

    Cap Membrane Kit 1.25 Mil PE

    Cap Membrane Kit 1.25 Mil PE (6 each), Galvanic, includes electrolyte (yellow cap)

    Cap Membrane Kit 1.25 Mil PE

    Cap Membrane Kit 1.25 Mil PE (6 each), Polarographic, includes electrolyte (yellow cap)

    Weight, Probe/Cable, 4.9 oz

    Weight, Probe/Cable, 4.9 oz

    Shoulder Strap

    Shoulder Strap

    Pro Series Lab Dock

    Pro Series Lab Dock

  • How to Order

    Step 1: Order Instrument

    SKU Description
    6050020 Pro20 Handheld instrument

    Step 2: Order Cable(s)

    SKU Description
    60520-1 1-m cable for DO/temp
    60520-4 4-m cable for DO/temp (includes cable management kit)
    60520-10 10-m cable for DO/temp (includes cable management kit)
    60520-20 20-m cable for DO/temp (includes cable management kit)
    60520-30 30-m cable for DO/temp (includes cable management kit)
    60520-100 100-m cable for DO/temp

    Step 3: Order Sensor(s) and Probe(s)

    SKU Description
    605780 Self-stirring BOD probe with 2-m (6 ft.) cable included
    605202 Galvanic Sensor for any cable
    605203 Polarographic Sensor for any cable

  • Video

    Pro20 Dissolved Oxygen Instrument

    The YSI Pro20 dissolved oxygen handheld is a rugged field instrument that is also versatile enough for lab BOD testing.

    Dissolved Oxygen Meter Comparison: Model 55 vs. Pro20 and Pro20i

    The YSI Pro20i has replaced the discontinued YSI Model 55 dissolved oxygen handheld. This video reviews the Model 55 with the Pro20 and Pro20i, with the Pro20 offering a user-replacable cable, unlike the Pro20i and Model 55.

  • Reviews
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