YSI Pro30 Conductivity, Salinity Instrument
YSI Pro30 Conductivity, Salinity Instrument


YSI Pro30 Conductivity, Salinity Instrument

Rugged and reliable, the YSI Pro30 provides everything you need in a handheld conductivity meter.

User-replaceable cables and convenient Quick Cal feature that walks you through the calibration routine makes it extremely user friendly. Mil-spec (military spec) quarter-turn locking connectors, IP-67 waterproof rating with a rubber over molded case, and 1-meter drop tests ensures durability and the instrument remains in your hands to provide years of sampling even in the harshest field conditions. The feature set of the Pro30 results in a low total cost of ownership over the life of the product and proves that it is smarter, tougher, and more versatile.

The super-stable 4-electrode conductivity cell is built directly into the cable bulkhead providing years of accurate data. The conductivity cells are designed for rugged field performance and are easily cleaned with a small conductivity brush. The electrodes require minimal maintenance.

Additional features include:

  • Quick Cal routine allows calibrations with the push of a button; remembers previous calibration values and walks you through the routine
  • Stores 50 data sets
  • Graphic, backlit display and glow in the dark keypad
  • Available with 1, 4, 10, 20, or 30-meter cables (4-meter and longer cables include cable management kit)
  • View display with polarized sunglasses on
  • Multiple languages include English, Spanish, French and German
  • User replaceable cables utilizing a robust MS connector that locks in place with a quarter turn rotation
  • Conductivity cell is part of the cable bulkhead and is a proven, field-worthy electrode
  • 3-year instrument; 2-year cable warranty

YSI now offers an Extended Warranty for the YSI Pro30 conductivity meter (new instruments only).

When ordering the Pro30 conductivity meter you must order the instrument and cable separately, allowing you to choose the system that best fits your application. The conductivity sensor is part of the cable you order and included in the cable purchase.


Certifications RoHS, IP-67, Assembled in USA, CE, 1-meter drop test, WEEE
Connector MS (military spec) waterproof with bayonet lock
Digital / Digital Sensors Analog
Equipment used with ProSeries 30-x cables
Graphic Display backlit display AND keypad, Graphic display with detailed Help
Languages German, French, English, Spanish
Logging Capabilities Single
Memory 50 data sets
Multiparameter Yes
Parameters Measured

Conductivity, Salinity, Total Dissolved Solids (TDS), Temperature

Power 2 alkaline C-cells provide 400 continuous hours at ambient temperature without backlight
Sampling Yes
Unit of Measure Temperature-°C, Conductivity-mS/cm, Salinity-ppt, Total Dissolved Solids (TDS)-g/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

Pro30 Instrument General Specifications

Cable & Probe Assembly Lengths Standard lengths of 1, 4, 10, 20, or 30 meters (3.28, 13.1, 32.8, 65.6 ft.)  
Dimensions 8.3 cm width x 21.6 cm length x 5.6 cm depth (3.25 in x 8.5 in x 2.21 in)
Conductivity Reference Temp Adjustable; range 15°C to 25°C
TDS Constant Range 0.3-1.0
Weight 475 grams (1.05 lbs)

Pro30 System Specifications (Instrument, Cables & Sensors)

Sensor Type Range Accuracy Resolution
(µS, mS)
Four Electrode Cell 0 to 200 mS/cm (auto-range) 1 m, 4 m cables:
±1.0% of the reading or 1.0 μS/cm, whichever is greater
10 m, 20 m, 30 m cables:
±2.0% of the reading or 1.0 μS/cm, whichever is greater

0.0001 to 0.1 mS/cm (range dependent)

(ppt, PSU)
Calculated from Conductivity and Temperature 0 to 70 ppt ±1% of reading or ±0.1 ppt, whichever is greater 0.01 ppt

(°C, °F, K)

Thermistor  -5 to 55°C
±0.3°C cables over 45-meters
Total Dissolved Solids (TDS)
(mg/L, kg/L, g/L)
Calculated from Conductivity and Temperature 0 to 100 g/L TDS constant range 0.30 to 1.00 (0.65 default) Dependent on temp, conductivity and TDS constant 0.001, 0.01, 0.1g/L

Specifications indicate typical performance and are subject to change.

Ordering Information:-

Step 1: Order Instrument

SKU Description
6050030 Pro30 Handheld Instrument

Step 2: Order Cable(s)

SKU Description
60530-1 1 m cable for cond/temp
60530-4 4 m cable for cond/temp*
60530-10 10 m cable for cond/temp*
60530-20 20 m cable for cond/temp*
60530-30 30 m cable for cond/temp*

*Includes Cable Management Kit

Step 3: Order Optional Accessories

SKU Description
603074 Hard-sided Pelican carrying case
603075 Large, soft-sided carrying case
603162 Small, soft sided carrying case (up to 10-meter cable)
603069 Belt clip to attach instrument to belt
603070 Shoulder strap
063517 Ultra clamp (attach to instrument to secure it to a desk, boat, etc.)
605978 Cable weight, 4.9 oz. (attach to stainless steel tip)
3161 1,000 μs/cm calibrator; quart
3163 10,000 μs/cm calibrator; quart
3165 100,000 μs/cm calibrator; quart
3167 1,000 μs/cm calibrator; 8 each pints
3168 10,000 μs/cm calibraotr; 8 each pints
3169 50,000 μs/cm calibrator; 8 each pints

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