Apera Instruments TDS20

7.3 Parameter setting notes
a) TDS Factor (P1):
Users can adjust TDS Factor by experimental data or experience. The
following chart lists some commonly used TDS Factors for reference.
Conductivity and TDS Factor
Conductivity of the solution
TDS Factor
0~100 μS/cm
0.60
100~1000 μS/cm
0.71
1~10 mS/cm
0.81
10~100 mS/cm
0.94
b) P2-Select temperature unit (°C-°F):
In P1 mode, press to enter P2, press , °C or °F flickering, press to
choose °C-°F, press to confirm parameter selection. Long press to return
to measurement mode.
c) Restore to factory default:
Select Yes to restore the calibration to the theoretical values and parameter
setting to original values. When meter’s calibration or measurement performs
abnormally, this function can be adopted so the meter goes back to factory
default setting and then users can conduct calibration or take measurements
again.
8. Technical Specifications
TDS
Range
0–100.0 ppm, 0–1000 ppm, 0–10.00 ppt
Resolution
0.1/1 ppm, 0.01 ppt
Accuracy
±1% F.S
Calibration points
1-2 points
Automatic Temp.
Compensation
0-50˚C
Temp.
Range
0-50˚C
Resolution
0.1˚C
Accuracy
±0.5˚C