W-20 Series Water Quality Monitoring System

22xd with probe
W-2000 Control Unit
W-22XD Multi-Probe
W-23XD Multi-Probe

Overview

Water is as precious as life itself. That's why current threats to water supplies make water quality analysis vital to our very existence. HORIBA has created the Multifunction Water Quality Monitoring System. Years of HORIBA sensor technology development have reached their culmination in the form of a 46-mm diameter sensor probe: a compact monitoring solution offering high pressure tolerance, long-term continuous measurement capability and highly accurate, simultaneous analysis of 13 parameters. In addition to the Water Quality Monitoring System's own capabilities, it was designed by HORIBA to be compatible with GPS and other data processing techniques.

Water Quality Analyzers & Meters product literature

Features

  • Up to one month Data logging
    The sensor's built-in memory function enables continuous measurement for as long as one month*––– just by leaving the probe submerged in the sample. Personnel need not to be present during the measurement process––– the data can even be captured by personal computers in remote locations.
    *With measurements every 15 minutes.
  • 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.
  • 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.
  • System enables GPS and numerous 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.

Manufactured by HORIBA

Specifications

 

W-22XD

W-23XD

Control Unit

Water proof construction

IP-67

•
option

•
option

Multi-Probe *1

Measurement temperature

0~55°C

•

•

Storage temperature

-5~60°C

Measurement depth *2

to 100 m

Maximum probe size

95 mm

Probe length

430 mm

Continuous use *3

30days

Data logging

•

Manual data memory (2880 items)

•

Automatic calibration

•

pH
*Two-point calibration
*Automatic temperature compensation

Measurment Principle

Glass electrode method

•
option

•
option

Range

pH 0~14

Resolution

0.01 pH

Repeatability

±0.05 pH

Accuracy

±0.1 pH

Dissolved oxygen
*Salt correction
(0 to 40 ppt /automatic)
*Automatic temperature compensation

Measurment Principle

Diaphragm galvanic battery method

•
option

•
option

Range

0~19.99 mg/L

Resolution

0.01 mg/L

Repeatability

±0.1 mg/L

Accuracy

±0.2 mg/L

Conductivity
*Auto range
*Automatic temperature
conversion (25°C)
*SI units

Measurment Principle

4 AC electrode method

•

•

Range

0~9.99 S/m

Resolution

0.1%F.S

Repeatability

±1%

Accuracy

±3%

Salinity

Measurment Principle

Conductivity conversion

•

•

Range

0~4%

Resolution

0.01%

Repeatability

±0.1%

Accuracy

±0.3%

Total Dissolved Solids (TDS)
*Conversion factor setting

Measurment Principle

Conductivity conversion

•

•

Range

0~100 g/L

Resolution

0.1%F.S

Repeatability

±2 g/L

Accuracy

±5 g/L

Seawater specific gravity
*Display δt, δ0, δ15

Measurment Principle

Conductivity conversion

•

•

Range

0~50 δt

Resolution

0.1 δt

Repeatability

±2 δt

Accuracy

±5 δt

Temperature

Measurment Principle

Thermistor method

•

•

Range

0~55°C

Resolution

0.01°C

Repeatability

±0.3°C

Accuracy

±1.0°C

Turbidity
*Unit selection

Measurment Principle

Penetration and scattering method

•

•

Range

0~800 NTU

Resolution

0.1 NTU

Repeatability

±3%

Accuracy

±5%

Water depth

Measurment Principle

Pressure method

•

•

Range(NTU or mg/L)

0~100m

Resolution

0.1 m

Repeatability

±3%

Accuracy

±5%

Oxidation reduction potential(ORP)

Measurment Principle

Platinum electrode method

•
option

•
option

Range

±1999 mV

Resolution

1 mV

Repeatability

±5 mV

Accuracy

±15 mV

Ion
*Auto range

Measurment Principle

Ion electrode method

-

•
option

•
option

•
option

Resolution

0.1%F.S

Repeatability

±5%

Accuracy

±10%

Nitric acid ion

Range

NO3-: 0.62~62,000 mg/L(pH 3~7)

Chloride ion

Cl-: 0.4~35,000 mg/L(pH 3~11)

Calcium ion

Ca2+: 0.4~40,080 mg/L(pH 5~11)

Fluoride ion

F-: 0.02~19,000 mg/L(pH4~10:20 mg/L)

Potassium ion

K+: 0.04~39,000 mg/L(pH5~11:3.9 mg/L)

Ammonia

NH3: 0.1~1,000 mg/L(pH 12 or more)

Simultaneously measurable parameters

 

 

10

13

Note: The accuracy rating value is obtained from measurements at an intermediate point of the standard solution after two-point calibration (at room temperature and pressure).
The repeatability and accuracy rating percentages are based on the full scale (except for salinity).
*1: Organic solvents, strong acids, and strong alkaline solvents cannot be measured.
*2: The maximum depth for ion measurements are 100 m for nitric acid ion, chioride ion, fluoride ion, 15 m for calcium ion, ammonia, and 3 m for potassium ion.
*3: Based on the data measured automatically at 15 minutes intervals. The battery life taken into account.
Periodical maintenance and calibration is necessary when a lot of shellfishes and seaweeds exist at the measurement point.

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