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4)
Auto. Power off (P04)
– The auto. power off time can be set to 10 to 20 minutes. For example, if
15 minutes is set, the meter will automatically shut down after 15 minutes if no operation; when
“Off” is set, the auto. power off function will be turned off. Long press
to manually shut down
the meter.
5)
pH Calibration Reminder (P07) and Conductivity Calibration Reminder (P11)
– set XX hours (H)
Or XX days (D) in ZenTest mobile app – settings – Parameter – pH – Calibration Reminder. On
the meter, you can only check the values that’s been set up on ZenTest App. For example, if 3
days is set up, the Er6 icon (see Figure-4) will appear in the lower right corner of the LCD screen
in 3 days to remind you to perform calibration, also in the ZenTest App there will be a pop-up
reminder. After calibration is finished or the reminder setting is cancelled in the ZenTest App, the
Er6 icon will disappear.
6)
pH Back to Factory Default (P08) and Conductivity Back to Factory Default (P12)
– Select “Yes”
to set the meter to its default status (erase all calibration record and return all parameter settings
to the default value). This function can be used when the meter does not work well in calibration
or measurement. Calibrate the meter again after setting the meter to factory default.
14. Technical Specifications
pH
Range
-2.00 to 16.00 pH
Resolution
0.01 pH
Accuracy
±0.01 pH ±1 digit
Calibration Points
1 to 3 points
Auto. Temperature
Compensation
0 – 50˚C (32 – 122˚F)
Conductivity
Range
0 to 199.9 μS, 200 to 1999 μS, 2 to 20.00 mS
Resolution
0.1/1 μS, 0.01 mS
Accuracy
±1% F.S
Calibration Points
1 to 3 points
TDS
Range
0.1 ppm to 10.00 ppt
TDS Factor
0.40 to 1.00
Salinity
Range
0 to 10.00 ppt
Resistivity
Range
50Ω to 20MΩ
ORP (mV)
Range
-1000 mV to 1000 mV
Accuracy
±0.2% F.S
Temperature
Range
0 to 50˚C (32-122˚F)
Accuracy
±0.5˚C
