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Water Quality Monitoring System

Continuous simultaneous analysis of up to 13 water quality parameters
 with extensive data logging capabilities 
water quality monitoring system

Features of the U20XD Series Water Quality Monitors

  • Depth down to 100 m
  • Multi Probes for simultaneous measurement
  • pH
  • DO
  • Conductivity, Salinity, TDS
  • Seawater specific gravity, 
  • Temperature
  • Turbidity
  • Depth
  • ORP, ions
  • Remarkable compact size in heavy duty steel cover
  • Data Logging
  • GPS option
  • One touch Multi-Parameter calibration
Water Quality Measurement
The Horiba water quality measurement system comprises a battery powered meter control unit with a submersible probe. The probe can be fitted with different sensors and cable lengths to match your requirements. There are three basic versions of the probe system depending on the number of sensors mounted in the probe. The 47mm (less than 2") diameter W21SDI measures 6 parameters using the SDI protocol, the W-22XD type has 6 sensors including turbidity for a total of 8 parameters and also fits in a 2 inch well. The W23XD version can measure 13 parameters with its 97mm diameter 3.8" probe. The systems are available with either fixed or detachable probes.

Up to one month Data logging
Simply leave the probe submerged in the sample and the sensor's built-in memory function enables continuous measurement for up to one month. Personnel do not need to be present during the measurement process. Data can even be retrieved by personal computers in remote locations.

Simultaneous measurement of 13 parameters
With the W-23XD unit (only), simultaneous measurements of 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 its powerful measurement capabilities, the compact U-20XD series is recommended for all water quality researchers and professionals.

Measurement at depths as low as 100 meters
With its superior durability and high pressure resistance, the newly developed sensor facilitates measurements as far as 100 meters below the water surface. Thus, in addition to rivers, lakes and other shallow bodies, high-precision measurement can now be readily obtained — and water quality can be monitored — at dams, and even in the open sea.

System enables GPS various other data processing mechanisms
System capabilities can be greatly increased by installing the Global Positioning System (GPS), supplied with unit U-2002. GPS allows measurement of location and time, in addition to water quality, and enables main unit screen display of the obtained data — an indispensable function for maintaining detailed records. With the acquired longitude, latitude and depth data, subject locations can be mapped in 3-D.

Specifications and Configuration
Control Unit Rating IP67 U22XD W22XD W23XD
Multiprobe Measurement temperatue 0-55 °C      
Storage Temperature -5 to~+60 °C
Depth 100 m
Probe size 95 mm
Probe length 430 mm
Continuous use 30 days
Data Logging yes
Automatic Calibration yes
pH
2 pt calibration
ATC		 Principle Glass Electrode   O
P
T
I
O
N		 O
P
T
I
O
N
Range 0-14 pH
Resolution 0.01 pH
Repeatability ±0.05pH
Accuracy ±0.01 pH
Dissolved
Oxygen
Salt Correction (0-40 ppt)
ATC		 Principle Galvanic   O
P
T
I
O
N		 O
P
T
I
O
N
Range 0-19.99 mg/L
Resolution 0.01 mg/L
Repeatability ±0.1 mg/L
Accuracy ±0.2 mg/L
Conductivity

Auto range
ATC (25°C)

 Principle 4 electrode      
Range 0-9.99 S/m
Resolution 0.1% FS
Repeatability ±1%
Accuracy ±3%
Salinity
 Principle conversion      
Range 0-4%
Resolution 0.01%
Repeatability ±0.1%
Accuracy ±0.3%
TDS
Calculated from conductivity		 Principle conversion      
Range 0-100 g/L
Resolution 0.1% FS
Repeatability ±3 g/L
Accuracy ±5 g/L
Seawater 
Specific Gravity		 Principle conversion      
Range 0-50
Resolution 0.1
Repeatability ±2
Accuracy ±5
Temperature Principle Thermistor      
Range 0-55 °C
Resolution 0.01 °C
Repeatability ±0.3 °C
Accuracy ±1.0 °C
Turbidity Principle Trans/Scattering      
Range 0-800 NTU
Resolution 0.1 NTU
Repeatability ±3%
Accuracy ±5%
Water Depth Principle Pressure      
Range 0-100 m
Resolution 0.1 m
Repeatability ±3%
Accuracy ±5%
ORP Principle Platinum Electrode   O
P
T
I
O
N		 O
P
T
I
O
N
Range ±1999 mV
Resolution 1mV
Repeatability ±5mV
Accuracy ±15mV
Ion Principle Ion Electrode O
P
T
I
O
N

Any
3
Range
Nitric Acid NO3: 0.62-62000 mg/L (pH 3-7)
Chloride Cl: 0.4-35000 mg/L (pH 3-11)
Calcium Ca2+: 0.4-40080 mg/L (pH 5-11)
Flouride F-: 0.4-35000 mg/L (pH 4-10)
Potassium K+: 0.4-39000 mg/L (pH 5-11)
Ammonia NH3: 0.1-1000 mg/L (pH >12)
Resolution 0.1% FS    
Repeatability ±5%    
  Accuracy ±10%    

 

Ordering Information
Model Description Price
HA-U22XD-2 pH, DO, Conductivity Salinity TDS. Seawater SG, temp, turbidity, depth, ORP and data logging
Main Unit, sensor probe, 2 m cable, pH 4 buffer, fill, beaker, syringe, wrench, case, batteries and manual. (Probe diameter 47 mm)		 call
HA-W22XD-2 as above but with a detachable probe (cable sold separately )  
HA-W23XD as above but with space for ion sensors (sold separately )  
HA-U22XD-10 With 10 meter cable  
HA-U22XD-30 With 30 meter cable  


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