YSI Pro20

Handheld DO Meter

YSI Pro20 - Handheld DO Meter

The Pro20 handheld DO meter can switch between lab and field work in a matter of seconds due to its interchangeable cables and probes. Featuring some of the fastest response times in a handheld DO meter (< 8 seconds), automatic barometric compensation, salinity compensation via user supplied values, and easy one touch calibration, the Pro20 allows you to complete your field work quickly and accurately.

The Pro20 is the suggested replacement for both the YSI 55 and the YSI 550A.

The large, graphic, LCD display is easy to read (visible even while wearing sunglasses), and both the display and keypad are backlit. The Pro20 can store 50 sets of data for later review, eliminating the need to write results down. Field cables are available in lengths ranging from 1 to 100 meters, and can use either galvanic or polarographic DO probes. A 2 meter cable with a self stirring BOD probe is also available for lab use.

When deciding between galvanic or polarographic field DO probes, the deciding factor is sensor warmup time vs longetivity. Galvanic sensors require no warmup period and can begin taking readings immediately. Polarographic sensors need 5 to 15 minutes of warmup before measurements can be taken, but have a longer sensor life. Both types of DO probes provide accurate measurements and fast response times.

Like the rest of the Professional Series line from YSI, the Pro20 is IP67 rated (even with the battery cover off), floats, and has military spec connectors. The interface is easy to use and can operate in multiple languages. Power is provided by 2 C alkaline batteries which allow for up to 400 hours of runtime. The Pro20 is backed by a 3 year instrument warranty and a 2 year cable warranty.

Pro20 Features

  • Quickly changes from field to lab work with interchangeable cables and probes
  • Fast response times (95% in < 8 seconds)
  • Internal barometer for automatic barometric pressure compensation
  • One touch calibration
  • Memory for 50 data sets
  • Display and keypad are backlit
  • Highly visible, graphic, LCD display
  • Can operate in multiple languages

What to Order

YSI Pro20 DO meters consist of the instrument, cable, and probe, all purchased seperately. This allows you to choose a configuration suitable for your application, and to order multiple cables/probes to create a versatile instrument that can be reconfigured by simply changing cables.

To order the Pro20 choose the instrument, a cable, and a DO probe (the BOD lab cable includes the probe). Accessories like carrying cases, flow cells, and replacement DO membrane kits are also available

YSI Pro20 Complete Kit

Call to Order
1-888-234-5678

  • Part Number/Description
  • Price
  • YSI Pro201
  • 6050020

  • Cable
    Temp Port
    BOD Port
    DO Probe
    Case
    Flow Cell

    Please enable JavaScript in your browser to configure this product.
    To place an order by phone please call 1-888-234-5678

  • Call to Order

YSI Pro20 Instrument Only

Call to Order
1-888-234-5678

  • Part Number/Description
  • Price
  • 6050020Pro201 instrument only2
  • $560.00 $532.00

YSI Pro20 Cable Assemblies

Call to Order
1-888-234-5678

  • Part Number/Description
  • Price
  • 60520-1Cable assembly for Pro2012, 1 meter
  • $250.00 $237.50
  • 60520-4Cable assembly for Pro2012, 4 meters3
  • $265.00 $251.75
  • 60520-10Cable assembly for Pro2012, 10 meters3
  • $315.00 $299.25
  • 60520-20Cable assembly for Pro2012, 20 meters3
  • $375.00 $356.25
  • 60520-30Cable assembly for Pro2012, 30 meters3
  • $475.00 $451.25
  • 60520-100Cable assembly for Pro2012, 100 meters3
  • $750.00 $712.50
  • 605780Cable assembly for Pro20 with self stirring BOD probe, 2 meter
  • $705.00 $669.75

YSI Pro20 DO Probes

Call to Order
1-888-234-5678

  • Part Number/Description
  • Price
  • 605202DO probe1 for Pro20, galvanic
  • $180.00 $171.00
  • 605203DO probe2 for Pro20, polarographic
  • $180.00 $171.00

YSI Pro20 Replacement DO Probe Membranes

Call to Order
1-888-234-5678

  • Part Number/Description
  • Price
  • 605913Replacement membranes1 for Pro20 galvanic probe
    Yellow cap 1.25 Mil Polyethylene
  • $60.00 $57.00
  • 605914Replacement membranes1 for Pro20 galvanic probe
    Blue cap 2.00 Mil Polyethylene
  • $60.00 $57.00
  • 605306Replacement membranes1 for Pro20 polarographic probe
    Yellow cap 1.25 Mil Polyethylene
  • $60.00 $57.00
  • 605307Replacement membranes1 for Pro20 polarographic probe
    Blue cap 2.00 Mil Polyethylene
  • $60.00 $57.00

YSI Pro20 Accessories

Call to Order
1-888-234-5678

  • Part Number/Description
  • Price
  • 603077Flow cell kit for Pro20
  • $380.00 $361.00
  • 603075Carrying case for Pro20, soft sided
  • $125.00 $118.75
  • 603074Carrying case for Pro20, hard sided
  • $285.00 $270.75
  • 603070Shoulder strap for Pro20
  • $31.00 $29.45
  • 603069Belt clip for Pro20
  • $28.00 $26.60
  • 063517Ultra clamp1 for Pro20
  • $25.00 $23.75
  • 063507Tripod2 for Pro20
  • $30.00 $28.50
  • 605978Cable weight for Pro20, 4.9 oz
  • $27.00 $25.65
  • 063019Cable weight for Pro20, 3″, 24 oz
  • $155.00 $147.25
  • 063020Cable weight for Pro20, 6″, 51 oz
  • $190.00 $180.50

Browse All Rental Categories

107 Categories, 228 Models

Our Most Popular Rental Categories

Browse By Manufacturer

30 Manufacturers, 226 Models

Popular Sales Equipment & Promotions

Field Supplies

Great Prices for Project Supplies

Did you know that Equipco also sells environmental field supplies?

Whether you need calibration standards, tubing, or other supplies like gloves and labels, we stock everything you need to finish the job. Our high quality field supplies, including NIST traceable calibration solutions and gases, come at significant savings over manufacturer brands.

Used Equipment

Great Discounts for Used Equipment

Did you know that Equipco also sells used equipment?

Whenever we have used equipment to sell, whether like-new equipment used only for demonstration or a former rental, well maintained and available for a great price, find what you’re looking for here and check back for updates.

RKI Eagle 2

Multiple Gas Monitor

RKI’s Eagle 2 is an advanced portable gas detector capable of monitoring up to six sensors simultaneously including a PID. 16 different sensors are available providing for hundreds of configuration possibilities.

Landtec GEM5000

Landfill Gas Analyzer

The GEM5000 is the latest in the line of Landtec's GEM landfill gas analyzers. Now lighter, smaller, more accurate, and with an improved user interface, the only instrument you need to take into the field just got even better.

Levelogger Edge

Water Level Datalogger

Advanced and durable, the Levelogger Edge is the latest water level datalogger from Solinst. An all new sensor design manages to achieve excellent accuracy while being more robust then previous models and remaining economical.

RAE MiniRAE 3000

Handheld PID Monitor

RAE Systems PIDs are known worldwide for their incredible reliability, accuracy, and features. The MiniRAE 3000 is the latest flagship model featuring the widest range of any handheld PID available and built in correction factors for over 200 compounds.

MultiRAE Series

Multiple Threat Monitor

The MultiRAE Series of handheld gas detectors includes three models for detection of up to six threats simultaneously. Choose from 25 toxic sensors, 3 PID sensors with a 9.8 eV lamp option, and even a gamma radiation sensor.

Your Rental Cart is Empty
Browse Rental Inventory



I forgot my password…