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HORIBA U-51 Multi-Parameter Water Meter

by Horiba
Save 15%
Original price $3,550.00
Current price $3,014.99

Portable multiparameter water quality measurement

U-50 series Multi-parameter water quality checker enables us to measure and indicate the monitoring result simultaneously up to 11 parameters with one unit. Tough & powerful design, considering user-friendly field monitoring on-site, such as rive, groundwater, drainage water, etc. brings together features of function and performance, which makes simple operation for everybody.


one probe, one 500-mL bottle of pH 4.0 buffer solution, one 250-mL bottle of KCl solution, DO sensor installation set, cleaning brush, calibration cup, batteries, shoulder strap, and carrying case.


This handheld, waterproof meters feature a large 3-1/2" (8.9 cm), easy-to-read LCD with backlighting for use in dark and low-light conditions. Multiple parameters can be measured and displayed at the same time. USB/probe connectivity and battery power are also indicated via the display. Variable contrast allows you to adjust for extreme ambient light conditions.

Meters are designed for one-handed operation. Probes are attached via a quick-connect connector allowing for fast setup. The unique auto-calibration feature provides a hassle-free meter setup. The Polarographic DO sensor features improved stability, fast response, and easy maintenance.

The auto-hold function freezes average data values providing more time to verify or transcribe data. Up to 10,000 data sets can be stored and later transferred to a PC via a built-in USB connection. Units of measure are user selectable which helps you save time.

Specifications & Description

  • Meter Type: Portable
  • Display typeLCD
  • Min pH (pH)0
  • Max pH (pH)14
  • pH Resolution0.01/0.1
  • pH Accuracy±0.1 pH
  • Buffer RecognitionDIN, NIST, and USA
  • Min mV (mV)-2000
  • Max mV (mV)2000
  • mV Resolution1 mV
  • mV Accuracy±15 mV
  • Min Conductivity0 mS
  • Max Conductivity100 mS
  • Conductivity Resolution0.001, 0.01, or 0.1 mS; 0.001 or 0.01 S
  • Conductivity Accuracy±1% FS
  • Min TDS0 to 100 ppt
  • Min Salinity0 to 70 ppt
  • Salinity Resolution0.1 ppt; 0.01%
  • Salinity Accuracy±3 ppt
  • Min Dissolved Oxygen0 to 50 ppm
  • Dissolved Oxygen Resolution0.01 ppm
  • Dissolved Oxygen Accuracy±0.2 ppm
  • Min Temperature (° C)-5
  • Max Temperature (° C)50
  • Min Temperature (° F)23
  • Max Temperature (° F)122
  • Temperature compensationAutomatic
  • InterfaceUSB
  • Data Logging (points)10,000 data sets
  • Battery4 x C batteries (included)
  • Battery life (hr)70
  • Width (cm)11.43
  • Height (cm)28.2575
  • Width (in)4 1/2
  • Length (in)2
  • Height (in)11