Hanna Instruments HI 3221, Instruction Manual, Page: 32 / 68

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The following table lists the specific range parameters.
Item Description Valid value Default
Calibr. Number of days after Disable, 1 to 7 days Disable
Timeout Calibration warning
(pH & ISE) is displayed
First point Management of 1 Replace or offset Replace
mode (pH) point calibration
Custom buffer Custom buffer Max. 5 buffers No
(pH) setting
pH Resolution Set pH resolution 0.1, 0.01 0.01
display 0.001
View calibr. Display calibration Enable or disabled Enable
points (pH) points
Display out of calibr. Enable or disable Enable
range warning
ISE probe
Type of ISE probe Custom or Standard (18) Fluoride
( HI 3222 only)
ISE unit User, ppt, g/L, ppm, mg/L ppm
( HI 3222 only) ppb, M, mol/L, mmol.L, % W/V
Ion Charge ±1, ±2, none +1
( HI 3221 only)
To enter SETUP menu, press SETUP function key while in measuring mode.
If SETUP is not displayed press MENU key.