LAQUA U-54G
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LAQUA U-54G

The HORIBA LAQUA U-54G is the most advanced model in the U-50 Series, designed for comprehensive environmental water quality monitoring. It combines simultaneous measurement of up to 11 water quality parameters, integrated GPS positioning, high-performance ISO 7027-compliant turbidity measurement, and optional water depth monitoring in a rugged field-ready instrument. The U-54G is ideal for environmental agencies, water utilities, research institutions, aquaculture operations, and industrial monitoring programs.

Key Features

  • Simultaneous measurement and display of up to 11 parameters
  • Integrated GPS for location-tagged data collection
  • ISO 7027 compliant LED turbidity sensor
  • Automatic one-touch calibration
  • Real-time measurement and Auto-Hold function
  • Large backlit LCD display
  • USB connectivity for data transfer
  • Stores up to 10,000 measurement records
  • Field-replaceable sensors
  • Rugged waterproof design for demanding environments
  • Optional 10 m and 30 m depth measurement capability
  • Chemical-resistant sensor construction for long service life
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Description

Measured Parameters

  • pH
  • pH (mV)
  • ORP (Oxidation Reduction Potential)
  • Dissolved Oxygen (DO)
  • Conductivity
  • Salinity
  • Total Dissolved Solids (TDS)
  • Seawater Specific Gravity
  • Temperature
  • Turbidity (LED 90° transmission/scattering method)
  • GPS Position Data
  • Water Depth (10 m and 30 m models)

Technical Specifications

Parameter Specification
pH Range 0.00 – 14.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.1 pH
ORP Range -2000 to +2000 mV
ORP Resolution 1 mV
ORP Accuracy ±15 mV
Dissolved Oxygen Range 0.00 – 50.0 mg/L
DO Resolution 0.01 mg/L
DO Accuracy ±0.2 mg/L (0–20 mg/L), ±0.5 mg/L (20–50 mg/L)
Conductivity Range 0 – 10 S/m (0 – 100 mS/cm)
Salinity Range 0 – 70 ppt
Temperature Range -10°C to 55°C
Data Memory 10,000 records
Communication USB
GPS Integrated
Power Supply 4 × C-size Batteries
Battery Life Approx. 70 hours
Sensor Diameter Approx. 96 mm
Sensor Length Approx. 340 mm
Sensor Weight Approx. 1.8 kg
Maximum Measurement Depth 30 m
Waterproof Rating JIS Class 8 (Probe), JIS Class 7 (Control Unit)

Applications

  • Surface water monitoring
  • Groundwater investigations
  • Environmental impact assessments
  • Wastewater treatment monitoring
  • Aquaculture and fisheries
  • Reservoir and lake studies
  • Coastal and marine monitoring
  • Government regulatory programs
  • Research and academic institutions

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