Water quality instrumentation for simultaneously measuring up to 13 different parameters.
Water quality sondes FEATURES:
  • Handheld water quality monitoring system with water quality sonde
  • Rugged, fully submersible sonde
  • Monitor up to 13 different parameters simultaneously
  • Dry cell batteries
  • Built in datalogger
  • Ideal for multi-parameter water quality measurements without having a permanent installation
Water Quality Sonde Product Description

The W-23XD water quality sonde brings laboratory accuracy and the ease of push-button operation to water quality instrumentation measurement in the field.  Years of water quality instrumentation technology development have resulted in the form of a 97-mm diameter water quality sonde: a compact water quality instrument able to offer high pressure tolerance, long-term continuous measurement capability and highly accurate for the simultaneous monitoring of up to 13 parameters.  The water quality sonde can simultaneously measure: pH, temperature, dissolved oxygen, conductivity, salinity, turbidity, total dissolved solids (TDS), water depth, oxidation reduction potential (ORP), seawater specific gravity and up to three specific ions.  Featuring a powerful water quality sonde and state-of-the-art functions, the water quality instrumentation makes it easy to get highly reliable water quality data simply and quickly just by submersing the sensor in the water.  The water quality sonde is flexible enough to use for checking the quality of a broad range of water samples, from factory effluent to urban drainage, river water, lake and marsh water, aquatic culture tanks, agricultural water supplies, and seawater.  The water quality instrumentation is water resistant, so it can be used safely even in the rain.

Measure Up to 13 Parameters
The W-23XD water quality instrumentation can simultaneous measure up to 13 parameters (from pH, dissolved oxygen, and conductivity to seawater specific gravity and a variety of ions) can be obtained - much more quickly and easily than with conventional instruments.  With the water quality instrumentation's powerful measurement capabilities, the compact W-23XD water quality sonde is recommended for all water quality researchers and professionals.

Automatic Water Quality Sonde Calibration
The W-23XD water quality sondes have an automatic calibration function that calibrates the instrumentation simply at the touch of a button for more highly reliable data.  What used to be a complicated calibration process is now easy.  Just fill the supplied beaker with the standard solution, immerse the water quality sonde and press a button once for one-point calibration for each of the five main parameters pH, conductivity, turbidity, DO, and depth.  One point calibration is also available for three ion parameters, Cl-, NO3-, and Ca2+.  Two-point calibration is also possible where high precision measurement data is required.

Deep Water Quality Measurments
With its superior durability and high pressure resistance, the water quality sondes facilitate measurements as far as 100 meters below the water surface.  Thus, in addition to rivers, lakes and other shallow bodies, high-precision water quality measurements can now be readily obtained and monitored by the water quality instrumentation at dams, and even in the open sea.

Built in Data Logger
The W-23XD water quality sonde's built-in memory function enables continuous measurement for as long as one month, just by leaving the sonde submerged in the sample.  Personnel do not need to be present during the measurement process, the data can even be captured by personal computers in remote locations.  NOTE: Must purchase U-PCDLP to export data to a computer.

The standard handheld W-23XD water quality instrumentation system comes with:

  • Carrying case
  • Handheld water quality instrumentation with water quality sonde
  • Instruction manual
  • pH and DO sensors
  • pH 4 buffer
  • pH internal solution
  • Calibration beaker
  • DO installation tool

Water Quality Sonde Specifications

Two-point calibration
Automatic Temperature Compensation
Glass electrode 0-14 pH 0.01 pH + 0.05 pH + 0.1 pH
Salt correction (0-40 ppt/automatic)
Automatic Temperature Compensation
Diaphragm galvanic battery 0-19.99 mg/L 0.01 mg/L + 0.1 mg/L + 0.2 mg/L
Auto Range
Automatic Temperature Conversion (25 C)
SI units
4 AC electrode 0-9.99 S/m 0.1% Full Scale +1% + 3%
SALINITY Conductivity Conversion 0-4% 0.01% +0.1% +0.3%
Conversion factor setting
Conductivity conversion 0-100 g/L 0.1% Full Scale +2 g/L +5 g/L
Display σt, σ0, σ15
Conductivity conversion 0-50 σt 0.1 σt +2 σt +5 σt
TEMPERATURE Thermistor 0-55 C 0.01 C +0.3 C +1.0 C
Unit selection
Penetration and scattering 0-800 NTU 0.1 NTU +3% +5%
WATER DEPTH Pressure method 0-100 m 0.1 m +3% +5%
OXIDATION REDUCTION POTENTIAL (ORP) Platinum electrode +1999 mV 1 mV +5 mV +15 mV
Auto range
Ion electrode Nitric Acid: NO3- 0.62~62,000 mg/L(pH 3-7)
Chloride: Cl- 0.4~35,000 mg/L(pH 3-11)
Calcium: Ca2+ 0.4~40,080 mg/L(pH 5-11)
Fluoride: F- 0.02~19,000 mg/L(pH 4-10:20 mg/L)
Potassium: K- 0.04~39,000 mg/L(pH 5-11:3.9 mg/L)
Ammonia: NH3 0.1~1,000 mg/L(pH 12 or more)
0.1% FS +5% +10%

Waterproof Construction: IP-67
Weight: 1.1 Lb (500 g)
Size: 7"x4"x2" (169mmx98mmx56mm)

Measurement Temperature: 0-55C
Storage Temperature: -5-60C
Measurement depth: 0-100m
Maximum Probe Size: 3.9" (97mm)
Probe Length: 17.3" (440mm)
Weight: 4 Lb (1800 g)

Water Quality Sonde Options

W-23XD Water Quality Sonde
Water quality monitoring system includes 2 m cable.  Note: Cable, meter, and probe are detachable.  DOES NOT INCLUDE ION SENSORS
W-23XD Water Quality Sonde (with 10 m cable)
Water quality monitoring system includes 10 m cable.  Note: Cable, meter, and probe are detachable.  DOES NOT INCLUDE ION SENSORS
W-23XD Water Quality Sonde (with 30 m cable)
Water quality monitoring system includes 30 m cable.  Note: Cable, meter, and probe are detachable.  DOES NOT INCLUDE ION SENSORS
W-23XD Water Quality Sonde (with 60 m cable)
Water quality monitoring system includes 60 m cable.  Note: Cable, meter, and probe are detachable.  DOES NOT INCLUDE ION SENSORS
W-23XD Water Quality Sonde (with 100 m cable)
Water quality monitoring system includes 100 m cable.  Note: Cable, meter, and probe are detachable.  DOES NOT INCLUDE ION SENSORS
Water Quality Sonde Ion Sensors
6531 Nitrate Ion Sensor    
6522 Chloride Ion Sensor    
6533 Calcium Ion Sensor    
6530 Fluoride Ion Sensor    
6532 Potassium Ion Sensor    
5012 Ammonia Ion Sensor    
W-23XD Water Quality Sonde Accessories
U-PCDLP PC Download Package
Includes U-2001 extension unit, AC adapter (specify voltage 110 or 220VDC), and a RS232C cable.  NOTE: This package is required to download data from the Water Quality Sonde to a computer.
W-23XD Water Quality Sonde Replacement Parts
W-2000 Water Quality Sonde Control Unit    
6280 Water Quality Sonde pH/ORP sensor    
5460 Water Quality Sonde DO sensor    
pH/Ion 3400i Ion Selective Electrode Analyzer
Electrodes not included.
U-10 Multiparameter Water Quality Probe
Measures pH, dissolved oxygen, temperature, turbidity, salinity, and conductivity.
U-22XD Multiparameter Probe
Use the multiparameter probe to monitor 10 different parameters, including total suspended solids, water depth, and ORP.
FL700 Fluoride Meter
Includes Fluoride electrode, TISAB reagent tablets, sensor cap, four 3V batteries, and a 48in (1.2m) neckstrap.
Water quality sensors for permanent installation.

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