Hanna Instruments wm 8910 User Manual
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Note:
• The FINE trimmer can adjust up to ±1.5 pH.
• Should you use the WM 8911 for a single-point dosage, it is
• The FINE trimmer can adjust up to ±1.5 pH.
• Should you use the WM 8911 for a single-point dosage, it is
suggested to adjust the SET LO trimmer to 0.00 pH if you are
only dosing acid solutions, and the SET HI to 14.00 pH if you are
only dosing basic solutions.
only dosing acid solutions, and the SET HI to 14.00 pH if you are
only dosing basic solutions.
FOR WM 8912 (pH & ORP)
a) pH setpoint
Adjust the graded dial to the desired setpoint from 6.00 to 8.00 pH.
Adjust the graded dial to the desired setpoint from 6.00 to 8.00 pH.
a) ORP setpoint
Adjust the graded dial to the desired setpoint from 500 to 900 mV.
Adjust the graded dial to the desired setpoint from 500 to 900 mV.
FOR WM 8913 (pH & CONDUCTIVITY)
a) pH setpoint
Adjust the graded dial to the desired setpoint from 4.00 to 10.00
pH.
Adjust the graded dial to the desired setpoint from 4.00 to 10.00
pH.
E.g. How to dose base liquids
Set point = pH 6.00
Measured value = pH 4.00
To adjust the sample stream to the setpoint, you need
to dose base, therefore short "BASE" to the common
terminal.
Set point = pH 6.00
Measured value = pH 4.00
To adjust the sample stream to the setpoint, you need
to dose base, therefore short "BASE" to the common
terminal.
FOR WM 8911 (DUAL-POINT ADJUSTMENT)
a) SET LO Adjustment
Turn the switches to the "SET" and "SET LO" positions. The display
will show the 1st setpoint (e.g. pH 4.00).
Turn the switches to the "SET" and "SET LO" positions. The display
will show the 1st setpoint (e.g. pH 4.00).
Using a small screwdriver, first adjust the setpoint through the
COARSE trimmer, then fine tune it to your required level with the
FINE trimmer until the desired set value is displayed (e.g. pH 5.00).
COARSE trimmer, then fine tune it to your required level with the
FINE trimmer until the desired set value is displayed (e.g. pH 5.00).
a) SET HI Adjustment
Turn the HI/LO switch to "SET HI" (with the other switch in the "SET"
position). The display will show the 2nd setpoint (e.g. pH 8.00).
Turn the HI/LO switch to "SET HI" (with the other switch in the "SET"
position). The display will show the 2nd setpoint (e.g. pH 8.00).
Using a small screwdriver, first adjust the setpoint through the
COARSE trimmer, then fine tune it to your required level with the
FINE trimmer until the desired set value is displayed (e.g. pH 6.00).
COARSE trimmer, then fine tune it to your required level with the
FINE trimmer until the desired set value is displayed (e.g. pH 6.00).