This document describes a multi-parameter water quality meter that can measure 11 parameters simultaneously, including pH, dissolved oxygen, conductivity, salinity, temperature, and more. The meter consists of a display unit and interchangeable sensor modules for standard water measurements, ion analysis, and chlorophyll levels. It stores up to 3360 data points and can interface with GPS, printers, and other devices. Calibration procedures are described for pH, dissolved oxygen, salinity, and conductivity measurements.
2. Introduction
Multi-parameter Water Quality Meter with
Compact, High Performance and Robust
water quality monitoring system.
11 Parameter Simultaneously.
Connect with GPS, LAN, printer and other.
35 Days data storages
Up to 100m Depth
6. Specification
1. Code WQC-24
2. Display LCD Digital
3.
Waterproof Construction
(Unit)
IP67 (JIS C 0920) Immersion proof
4.
Waterproof Construction
(Module)
Pressure Resistant 1.0 MPa, Waterproof
5. Power Source (Unit) 2 x AA size dry batterry or AC adaptor
6. Power Source (Module)
3 x AA size dry batterry (35 days, 15
minutes)
7. Weight (Unit) 320 g
8. Weight ( Module) 1350 g
9. Memory (Module) Max 3360 data
7. Parameter of Analysis
Standard Module
No. Parameter Measurement Range
1 pH 0.00 – 14.00
2 Dissolve Oxygen (DO) 0.00 – 20 mg/L
3
Electric Conductivity
(COND)
0.00 – 10.00 S/m (Auto-
range)
4 Salinity (SALT) 0.00 – 4.00 %
5 Total Dissolve Solid (TDS) 0.00 – 100.00 g/L
6
Seawater Specific Gravity
(σt)
0.0 – 50.0 σt
7 Temperature (TEMP) -5.00 – 55.00 °C
8 Turbiduty (TURB) 0.0 – 800.0 NTU
8. Parameter of Analysis
Ion and Chlorophyl Module
No Parameter Measurement Range
1 Water Depth 0.0 – 100.0 m
2 Nitrate Ion (NO3
-) 0,62 – 62.000 mg/L
3 Chloride Ion (Cl-) 1 – 35.000 mg/L
4 Calcium (Ca2+) 0.4 – 40.000 mg/L
5 Fluoride (F-) 0.019 – 19.000 mg/L
6 Pottasium Ion (K+) 0.39 – 3.900 mg/L
7 Ammonium Ion (NH4
-) 0.09 – 1800 mg/L
8 ORP -2.000 – 2.000 mV
9 Chlorophyl 0.0 – 400.0 µg/L
9. Features
1. Multiple Parameter
2. High Performance Sensor
3. Compact and Robust Sensor Probe
4. One Month Data Logging Storage
Capacity
5. GPS Interface
6. PC Based Data Acquisition Software
10. pH calibration
• Prepare pH standard solution 6,86 dan 4,01 with
calibration container.
• Wash the sensor module, wipe the water off.
• Immerse the electrode to calibration container.
• Wait stabilized. Press CAL/ENT two second or more.
• are blinking, beep sounds.
• pH is stabilized, beep sounds again, mark are
displayed.
• Wash again the sensor module, wipe the water off.
• Repeat the same procedure for pH 4,01.
11. DO Calibration
1. Span Calibration.
• Put small volume of water to Calib. Container.
• Push the sensor module deep into Calib. Container.
• Leave it 20 minute or more, until stabilized
• Press CAL/ENT, 2 second or more, calibration mark are
dispalayed.
2. Zero Calibration.
• Prepare 5-10% Sodium Sulfit solution. Immerse the sensor
module
• Press CAL/ENT, 2 second or more, calibration mark are
displayed.
12. Salinity Measurement
• The Salt content, TDS and SSG are
determined by conversion from the Electric
Conductivity (EC).
• Calibration is normally unnecessary.
• Possible conversion beetwen the NACl
conversion and Salt content of Saline water.
• The NaCl conversion concentration is percent
(%)
• The Salt content based upon the definiton by
UNESCO (1998)
13. Electric Conductivity
A. The EC has been coincided with cell constan
when shipped from the factory.
B. It calibrate when the cell constan to be
changed.
C. 1-point calibration using Pottasium Chloride
standard solution (B Solution) JIS K0130
D. Does not require calibration in the first year
of use.
14. 1. Pour B Solution on a beaker, Display (COND)
on the screen.
2. Immerse the module, upon the indication is
stabilized, press key 2 > second.
3. Set the calibration value of B Solution using
or and press key.
4. Calibration is started with and flashing .
5. The calib. mark is shown on the screen
with a beep at 10 sec later.
EC Calibration
