is pushed before
measurement is stable
( comes up)
Wait for the smile icon to stay,
and then short press
5.3 The tester has already been calibrated after manufacture. Usually users can
use the tester right away, or test it in the calibration solutions to test its
accuracy. When error is large, calibrate it before using.
5.4 We recommend replacing new calibration solutions after 5-10 times of
calibrations to keep the s
olution’s accuracy.
6. Parameter Setting
6.1 Parameter setting reference chart:
Symbol
Parameter Setting Items
Code
Factory Default
P1
TDS Factor
0.40 to 1.00
0.71
P2
Restore to factory default
No
–
Yes
No
6.2 How to setup parameters:
When turned off, long press to enter setup
→
short press to switch
P1-P2
→
Short press , parameter flickering
→
short press to choose,
short press to confirm parameter selection
→
Long press to switch off.
6.3 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
