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  1. Water Quality
  2. pH Meters

YSI Professional Plus Multiparameter Meter

The toughest, smartest and most versatile water quality meter available.

YSI Professional Plus Multiparameter Meter
YSI Professional Plus Multiparameter Meter
  • YSI Professional Plus Multiparameter Meter
    YSI Professional Plus Multiparameter Meter
  • YSI Professional Plus Multiparameter Meter with Cable and Sensor
    YSI Professional Plus Multiparameter Meter with Cable and Sensor
  • YSI Professional Plus Multiparameter Meter Kit
    YSI Professional Plus Multiparameter Meter Kit
YSI Professional Plus Multiparameter Meter
YSI Professional Plus Multiparameter Meter
YSI Professional Plus Multiparameter Meter
YSI Professional Plus Multiparameter Meter with Cable and Sensor
YSI Professional Plus Multiparameter Meter
YSI Professional Plus Multiparameter Meter Kit
Retired products cannot be ordered
The YSI ProQuatro Multiparameter Water Quality Meter is the suggested replacement

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Overview

Features

  • DO, pH, Conductivity, ORP, Ammonium, Nitrate, Chloride, Salinity, Total Dissolved Solids, Barometric Pressure
  • Ranges and accuracy dependent upon probes and cables
  • 2,000 data-set memory with GLP event logging
  • Interval or single event logging capability
  • Rubber, over-molded IP-67 water proof case
  • 3-year instrument warranty
  • User- upgradeable software via USB
  • Backlit display and keypad
  • Graphic display with detailed Help

Description

The YSI Professional Plus handheld multiparameter meter is the toughest, smartest and most versatile water quality meter available. The Pro Plus is a true multiparameter meter capable of fast and accurate measurements of a variety of combinations of dissolved oxygen, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature.

The YSI Pro Plus provides numerous benefits from the following advanced features: 2,000 data-set memory, password protection, backlit display and keypad, graphic display with detailed Help functionality, re-cal prompts, user defined fields, detailed GLP, auto stable, Hold All Readings function, Data Manager software for the desktop, USB connection, auto-buffer recognition, and flexible folders and site lists for logging data.

The Pro Plus also meets the demands of true field work. The YSI Professional Plus Multiparameter Meter is rated to IP-67 standards even without the battery cover on. Other tough features on the YSI Professional Plus Multiparameter Meter include Mil-spec connectors and the rubber over-molded case. The YSI Pro Plus is protected by a 3-year warranty and vigorous in-house testing that includes 1-meter drop tests from all angles to ensure expected field-durability.

The YSI Professional Plus handheld multiparameter meter includes the meter, manual, batteries, communications saddle, USB cable and Data Manager software. Cable and probes are not included and must be purchased separately.

This meter requires regular calibration to perform at its optimal level. We strongly suggest purchasing calibration standards and solutions which are available as accessories.

Choose from 22 Pro Plus kits. Kits include everything from lab to field (or both), single to multiparameter, or U.S. to International versions and more. EPA approved for drinking water and wastewater compliance reporting.

Documents

Spec Sheets

  • YSI Professional Plus Multiparameter Meter Datasheet PDF (1008 KB)

Manuals

  • YSI Professional Plus Multiparameter Meter Manual PDF (1.7 MB)

Application Notes and White Papers

  • The Dissolved Oxygen Handbook: A Practical Guide to Dissolved Oxygen Measurements (1.6 MB)

Links

  • All possible part numbers

Accessories

Cables

YSI 10 Pro Series ISE Cable
YSI 10 Pro Series ISE Cable

1-port cable for use with the Professional Plus instrument. The port requires a ISE probe.

Select options for pricing
YSI 20 Pro Series DO Cable
YSI 20 Pro Series DO Cable

1-port cable for use with the Professional Plus instrument. The port requires a DO probe.

Some Models in Stock
Select options for pricing
YSI 30 Pro Series Conductivity Cable
YSI 30 Pro Series Conductivity Cable

Allows for the measurement of conductivity, specific conductance, salinity, total dissolved solids and temperature.

Select options for pricing
YSI 1010 Pro Series Dual ISE Cable
YSI 1010 Pro Series Dual ISE Cable

2-port combo cable for use with the YSI Professional Plus instrument. The 2-ports require ISE probes.

Select options for pricing
YSI 1020 Pro Series ISE/DO Cable
YSI 1020 Pro Series ISE/DO Cable

2-port combo cable for use with the YSI Professional Plus instrument. The 2-ports require a ISE and a DO probe.

Select options for pricing
YSI 1030 Pro Series ISE/Conductivity Cable
YSI 1030 Pro Series ISE/Conductivity Cable

Requires an ISE probe while the conductivity sensor is built right into the cable.

Select options for pricing
YSI 5790 Pro Series Quatro Cable
YSI 5790 Pro Series Quatro Cable

4-port cable for use with the YSI Professional Plus meter to create a powerful multi-parameter sampling instrument.

Select options for pricing
YSI 2030 Pro Series DO/Conductivity Cable
YSI 2030 Pro Series DO/Conductivity Cable

1-port combo cable for use with the YSI Professional Plus meter. The 1-port requires a DO probe while the conductivity is built right into the cable.

Select options for pricing

Sensors/Probes

YSI 1007 Pro Series pH Sensor and Cable
YSI 1007 Pro Series pH Sensor and Cable

Lab-grade pH sensor and 1- or 4-meter cable for the YSI Professional Plus meter.

Select options for pricing
YSI 1008 Pro Series ORP Sensor and Cable
YSI 1008 Pro Series ORP Sensor and Cable

Lab-grade ORP/Temperature sensor and 1- or 4-meter cable for the YSI Professional Plus meter.

Select options for pricing
YSI 1009 Pro Series pH/ORP Sensor and Cable
YSI 1009 Pro Series pH/ORP Sensor and Cable

Lab-grade pH/ORP sensor and 1- or 4-meter cable for the YSI Professional Plus meter.

Select options for pricing
YSI 1001 pH Sensor
YSI 1001 pH Sensor

pH sensor for YSI Pro Series analytical instruments.

In Stock
Call for pricing
YSI 1002 ORP Sensor
YSI 1002 ORP Sensor

ORP sensor for YSI Pro Series analytical instruments.

Call for pricing
YSI 1003 pH/ORP Sensor
YSI 1003 pH/ORP Sensor

pH/ORP sensor for YSI Pro Series analytical instruments.

Call for pricing
YSI 1004 Ammonium, NH4+ Sensor
YSI 1004 Ammonium, NH4+ Sensor

Ammonium, NH4+ sensor for YSI Pro Series analytical instruments.

Call for pricing
YSI 1005 Chloride Sensor
YSI 1005 Chloride Sensor

Chloride sensor for YSI Pro Series analytical instruments.

Call for pricing
YSI 1006 Nitrate Sensor
YSI 1006 Nitrate Sensor

Nitrate sensor for YSI Pro Series analytical instruments.

Call for pricing
YSI 2002 Galvanic DO Sensor
YSI 2002 Galvanic DO Sensor

Galvanic dissolved oxygen sensor for YSI Pro Series analytical instruments.

In Stock
Call for pricing
YSI 2003 Polarographic DO Sensor
YSI 2003 Polarographic DO Sensor

Polarographic dissolved oxygen sensor for YSI Pro Series analytical instruments.

Select options for pricing
YSI 5560 Conductivity and Temperature Probe
YSI 5560 Conductivity and Temperature Probe

Combination temperature and conductivity sensor for YSI Pro Series analytical instruments.

Call for pricing
YSI ProBOD Probe
YSI ProBOD Probe

Self-stirring BOD probes designed to fit into standard U.S. style 300 mL BOD bottles .

Call for pricing

Cases

YSI Soft Carrying Case
YSI Soft Carrying Case

Organize any Pro Series meter and accessories while protecting them from the elements.

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YSI Hard Carrying Case
YSI Hard Carrying Case

The ultimate protection for your YSI Pro Series meter.

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Solutions

YSI Calibration Solutions and Standards
YSI Calibration Solutions and Standards

Full range of calibration solutions and standards for YSI analytical meters.

Some Models in Stock
Select options for pricing
YSI 060906 Conductivity Standard
YSI 060906 Conductivity Standard

Conductivity standard, 1,413 uS/cm, +/- 1.0% tolerance, NIST traceable, case of eight individual pints.

Call for pricing

Accessories

Please consider these optional accessories.

YSI Flow Cells
YSI Flow Cells

For applications where it is impossible or undesirable to submerge the probe module into the sample.

Select options for pricing
YSI 626482 OBOD Sensor Cap Kit
YSI 626482 OBOD Sensor Cap Kit

Replacement OBOD Sensor Cap Kit.

Call for pricing

Applications

This product can be used in the following applications:

  • Agricultural
  • Environmental Monitoring
  • Waste-water and Grey Water
  • Water Quality

Here's how some of our customers use this product...

Measuring Multiple Parameters at Varying Depths in the Field

The Background: The customer, an engineering firm doing site analysis prior to a large infrastructure project, needs to measure multiple water quality parameters at varying depths.

The Problem: The customer had used other multi-parameter instruments in the past but quickly discovered their limitations. Though certain parameters, such as conductivity and dissolved oxygen, can vary greatly with water depth, measuring at multiple depths is tricky. With other multi-parameter water quality meters, each electrode (typically four) has its own cable, making it likely that they get tangled, leading to frustration and taking much longer than necessary to conduct the tests.

The Solution: The YSI Professional Plus Multi-parameter Meter is optimized for field use and utilizes a single, rugged, watertight, cable with Mil-spec connectors. For cables 4m or longer, a cable management tool is provided. This, coupled with the IP67 case, makes the YSI Professional Plus the best instrument for multi-parameter water quality measurements in the field.

Need Help? Call a Flow engineer at 1-800-884-4967

We're open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET

MaryKate R. headshot MaryKate R.
Applications Engineer
3 years at Instrumart
Lou P. headshot Lou P.
Senior Applications Engineer
28 years at Instrumart
Mathias H. headshot Mathias H.
Senior Applications Engineer
15 years at Instrumart
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Applications Engineer
Jason D. headshot Jason D.
Senior Applications Engineer
22 years at Instrumart
Dan R. headshot Dan R.
Applications Engineer
3 years at Instrumart
Patrick M. headshot Patrick M.
Applications Engineer
3 years at Instrumart
MaryKate R. headshot MaryKate R.
Applications Engineer
3 years at Instrumart
Lou P. headshot Lou P.
Senior Applications Engineer
28 years at Instrumart
Mathias H. headshot Mathias H.
Senior Applications Engineer
15 years at Instrumart
Martin K. headshot Martin K.
Applications Engineer
Jason D. headshot Jason D.
Senior Applications Engineer
22 years at Instrumart
Dan R. headshot Dan R.
Applications Engineer
3 years at Instrumart
Patrick M. headshot Patrick M.
Applications Engineer
3 years at Instrumart
MaryKate R. headshot MaryKate R.
Applications Engineer
3 years at Instrumart

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YSI Professional Plus Multiparameter Meter
YSI Professional Plus Multiparameter Meter
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