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Up/Down-
In the pH/ORP/conductivity/salinity/TDS measure
mode, these two keys are used to manually enter the
temperature values. They have no effect on the unit
when operating in ATC mode.
In the ORP and conductivity calibration mode, these
two keys are used to adjust values in ORP or
conductivity.
Stand/Cal & Slope/Enter-
These two keys are used for pH, ORP and
conductivity calibration. For their specific functions,
please see the "calibration" section in each
parameter.
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Mea. / Eff.-
1. The key is used to bring the unit out of the AUTO
condition when operating in the pH-AUTOLOCK or mV
(RmV)-AUTOLOCK mode.
2. In the pH mode, press and hold this key for 5
seconds, the LCD will display the efficiency of the
electrode and Offset value.
3. In the ORP mode, press and hold this key for 5
seconds, the LCD will display the electrode Offset value.
4. In the
Conductivity, Salinity or TDS mode, press
and hold this key for 5 seconds, the LCD will display the
electrode cell K value.
OPERATIONAL PROCEDURES
A. pH Buffer Set Selection
The 6377 meter has two buffer sets: 1.68, 7.00, 4.01, 10.01, 12.46
pH and 1.68, 6.86, 4.00, 9.18, 12.46 pH.
To change the buffer set, turn off the unit, then press and hold the
“Stand/Cal”
key while turning on the unit again.
[
Note:
There is no need to repeat this procedure every time the unit
is power up unless one decides to change the buffer settings.]
B. pH Calibration
The 6377 uses up to 5 points calibration.
[
Note:
If the device requires to calibrate more than one calibration
point, the first calibration point must be 6.86/7.00 pH.]
a. Calibration with an ATC/Temp probe in the pH-AUTOLOCK
mode.
1.
Turn the unit on. In pH mode, press
“Clear”
key for 5
STAND
CAL
SLOPE
ENTER
