YSI Pro20

Handheld DO Meter

YSI Pro20 - Handheld DO Meter

The Pro20 is a handheld DO meter for field and lab use. Featuring galvanic, polarographic, or a self stirring BOD probe, the Pro20 with its interchangeable cables and probes can convert from field to lab work within seconds.

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

YSI Pro20 Ordering Instructions

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

  • Part Number/Description
  • Price
    • Configure a YSI Pro201
    • Cable
      Temp Port
      BOD Port
      DO Probe
      Flow Cell

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      To place an order by phone please call 1-888-234-5678

YSI Pro20 Instrument Only

  • Part Number/Description
  • Price
  • 6050020Pro201 instrument only2
  • $585.00 $555.75

YSI Pro20 Cable Assemblies

  • Part Number/Description
  • Price
  • 60520-1Cable assembly for Pro2012, 1 meter
  • $256.00 $243.20
  • 60520-4Cable assembly for Pro2012, 4 meters3
  • $272.00 $258.40
  • 60520-10Cable assembly for Pro2012, 10 meters3
  • $323.00 $306.85
  • 60520-20Cable assembly for Pro2012, 20 meters3
  • $385.00 $365.75
  • 60520-30Cable assembly for Pro2012, 30 meters3
  • $487.00 $462.65
  • 60520-100Cable assembly for Pro2012, 100 meters3
  • $769.00 $730.55
  • 605780Cable assembly for Pro20 with self stirring BOD probe, 2 meter
  • $740.00 $703.00

YSI Pro20 DO Probes

  • Part Number/Description
  • Price
  • 605202DO probe1 for Pro20, galvanic
  • $189.00 $179.55
  • 605203DO probe2 for Pro20, polarographic
  • $189.00 $179.55

YSI Pro20 Replacement DO Probe Membranes

  • Part Number/Description
  • Price
  • 605913Replacement membranes1 for Pro20 galvanic probe
    Yellow cap 1.25 Mil Polyethylene
  • $63.00 $59.85
  • 605914Replacement membranes1 for Pro20 galvanic probe
    Blue cap 2.00 Mil Polyethylene
  • $63.00 $59.85
  • 605306Replacement membranes1 for Pro20 polarographic probe
    Yellow cap 1.25 Mil Polyethylene
  • $62.00 $58.90
  • 605307Replacement membranes1 for Pro20 polarographic probe
    Blue cap 2.00 Mil Polyethylene
  • $62.00 $58.90

YSI Pro20 Accessories

  • Part Number/Description
  • Price
  • 603077Flow cell kit for Pro20
  • $395.00 $375.25
  • 603075Carrying case for Pro20, soft sided
  • $128.00 $121.60
  • 603074Carrying case for Pro20, hard sided
  • $299.00 $284.05
  • 603070Shoulder strap for Pro20
  • $32.00 $30.40
  • 603069Belt clip for Pro20
  • $28.70 $27.27
  • 063517Ultra clamp1 for Pro20
  • $25.00 $23.75
  • 063507Tripod2 for Pro20
  • $30.00 $28.50
  • 605978Cable weight for Pro20, 4.9 oz
  • $28.00 $26.60
  • 063019Cable weight for Pro20, 3″, 24 oz
  • $155.00 $147.25
  • 063020Cable weight for Pro20, 6″, 51 oz
  • $190.00 $180.50

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