W-20XD Series Multi-Parameter Water Quality Meters
Overview
HORIBA has designed the Multl-Parameter Water Quality Monitoring Meter to be extra durable with the convenience of the auto-calibration feature. Years of HORIBA sensor technology development have reached their culmination in the form of a single 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 PC.
W-22 W-23 Instruction Manual
Features
- Up to one month Data logging
The sensor's built-in memory function enables continuous measurement for as long as one month*. Measurement data is stored in the probe therefore the probe only can be deployed at the site on a line. Data can even be captured by personal computers in remote locations. Data storage capacity: 2880 sets.
*With measurements every 15 minutes, shorter data collection frequencies exhaust the battery life faster. - Measurement at depths to 100 meters
With its durability and capability to operate at a high pressure , the sensor enables the user to take measurements as far as 100 meters below the water surface. In addition to rivers, lakes and other shallow bodies, high-precision measurements can be readily obtained from dams and the open sea. - Simultaneous measurement of 13 parameters
With the W-23XD unit (only), simultaneous measurements of up to 13 parameters to include ion measurements. With the W-22XD, 10 parameters can be measured at one time. - System enables GPS and PC connectivity
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. 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 |
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Multi-Probe *1 | Measurement temperature | 0-55°C |
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Storage temperature | -5 to 60°C | |||
Measurement depth *2 | to 100 m | |||
Maximum probe size | W-22XD 47mm W-23XD 95 mm | |||
Probe length | 430 mm | |||
Continuous use *3 | 30days | |||
Data logging | 2880 sets | |||
Manual data memory |
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Automatic calibration |
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pH | Measurement Principle | Glass electrode method | (•) | (•) |
Range | pH 0-14 | |||
Resolution | 0.01 pH | |||
Repeatability | ±0.05 pH | |||
Accuracy | ±0.1 pH | |||
Dissolved oxygen | Measurement Principle | Diaphragm galvanic battery method | (•) | (•) |
Range | 0-19.99 mg/L | |||
Resolution | 0.01 mg/L | |||
Repeatability | ±0.1 mg/L | |||
Accuracy | ±0.2 mg/L | |||
Conductivity | Measurement Principle | 4 AC electrode method | • | • |
Range | 0-9.99 S/m | |||
Resolution | 0.1%F.S | |||
Repeatability | ±1% | |||
Accuracy | ±3% | |||
Salinity | Measurement Principle | Conductivity conversion | • | • |
Range | 0-4% | |||
Resolution | 0.01% | |||
Repeatability | ±0.1% | |||
Accuracy | ±0.3% | |||
Total Dissolved Solids (TDS) | Measurement Principle | Conductivity conversion | • | • |
Range | 0-100 g/L | |||
Resolution | 0.1%F.S | |||
Repeatability | ±2 g/L | |||
Accuracy | ±5 g/L | |||
Seawater specific gravity | Measurement Principle | Conductivity conversion | • | • |
Range | 0-50 δt | |||
Resolution | 0.1 δt | |||
Repeatability | ±2 δt | |||
Accuracy | ±5 δt | |||
Temperature | Measurement Principle | Thermistor method | • | • |
Range | 0-55°C | |||
Resolution | 0.01°C | |||
Repeatability | ±0.3°C | |||
Accuracy | ±1.0°C | |||
Turbidity | Measurement Principle | LED light source, scattering method | • | • |
Range | 0-800 NTU | |||
Resolution | 0.1 NTU | |||
Repeatability | ±3% | |||
Accuracy | ±5% | |||
Water depth | Measurement Principle | Pressure method | • | • |
Range(NTU or mg/L) | 0-100m | |||
Resolution | 0.1 m | |||
Repeatability | ±3% | |||
Accuracy | ±5% | |||
Oxidation reduction potential(ORP) | Measurement Principle | Platinum electrode method | (•) | (•) |
Range | ±1999 mV | |||
Resolution | 1 mV | |||
Repeatability | ±5 mV | |||
Accuracy | ±15 mV | |||
Ion | Measurement Principle | Ion electrode method | - | (•) (•) (•) |
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 |
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| 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.