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Observator 100 years

YSI Pro30 CTD handmeter

The Pro30 is a handheld meter that measures salinity, conductivity, specific conductance, total dissolved solids, and temperature. The Pro30 features userreplaceable cables in lengths up to 30-meters, 50 data set memory, and a simple calibration routine. True field performance is verified with the IP-67 waterproof and impact resistant case drop tested at 1-meter. Additionally, the YSI super-stable 4-electrode conductivity cell is so reliable it is built directly into the 2-year warranty cable.


Dutch market only
Please be informed that we – as a reseller – are only allowed to sell/deliver Xylem/YSI and Xylem/SonTek products to the Dutch market.


Additional documents


  • Conductivity: ±0.5% of reading or 1.0 uS/cm, whichever greater
  • Size: 8.3 cm width x 21.6 cm length x 5.7 cm depth (3.25 in. x 8.5 in. x 2.25 in.)
  • Weight: with batteries 475 grams (1.05 lbs.)
  • Power: 2 alkaline C-cells providing 400 hours of battery life, low battery indicator on Pro30
  • Cables: 1- 4- 10- 20- and 30-m lengths (3.28, 13.1, 32.8, 65.6 ft.)
  • Warranty: 3-year instrument, 2-year cable and sensor
  • TDS constant range: adjustable, 0.3-1.0
  • Conductivity reference temp: adjustable, range 15 °C to 25 °C
  • Specific conductance temp comp: adjustable, 0 to 4%
  • Data memory: 50 data sets
  • Languages: English, Spanish, German, French
  • Certifications: RoHS, CE, WEEE, IP-67 waterproof, 1-meter drop test

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