Micro--processor control, structured programming and touch sensor
Low-voltage variable frequency design, high precision A/D
DDS-309 Conductivity Meter
1: Micro--processor control, structured programming and touch sensor
2: Low-voltage variable frequency design, high precision A/D conversion and integrated design
3: Power-off protection,Splash-proof and dustproof, adaptable to poor measurement environment
4: Multi-measuring modes for measuring solutions electric conductivity, TDS, salinity and temperature
5: ATC automatic identification, automatic / manual temperature compensation
6: Adjustable temperature and TDS coefficients
7: The correction function for correcting constants of the positive electrode,automatically saving correction data(309+)
8: With optional components of four-specification conductance electrodes with coefficients of 0.01, 0.1, 1, 10
9: With optional components of the DJS-0.01 titanium alloy electrode conductance and the flow measuring cell for measuring electric conductivities of purified water and high-purity water.
10: RS232 data output interface
Technical performance
Grade 0.5
Range of measurement Electric conductivity: 02×105μs/cm
Temperature: -5105.0
TDS020000ppm
Salinity: 080ppt
Range conversion 0.000.200 μS/cm DJS=0.01h
0.002.000 μS/cm DJS=0.01 or 0.1h
0.0020.00 μS/cm
0.00200.0 μS/cm
0.002.000 mS/cm
0.0020.00 mS/cm
0.00200.00 mS/cm DJS=10h
Seven-gear automatic range conversion
Accuracy Electric conductivity: ±0.5F.S
Temperature: ±0.3
TDS±0.5F.S
Salinity: ±1.0%ppt
Correction method with multi automatically identified correction points inside(309+)
TDS coefficient 0.21.00
Temperature coefficient 010.0%/(Load SETUP Defaults: 2.0)
Range of temperature compensation 050.0
Standard Equipment
conductivity meter (mainframe) 1
DJS-1C conductance electrode 2
Temperature Sensor 1
Electrode support and seat support 1 set
Power adapter (9V DC output) 1
Users manual, warranty card, conformity certificate 1 each