Hanna Instruments HI 84529-01 - Manual (Page 32)

www. hannainst .com 32 Operational Guide
NOTE: This error message appears when
the pump is not working properly. Check
the tubing, valve and syringe. Press
RESTART to try again.
The calibration of the pump must be performed every time the syringe, pump
tube, the titrant bottle or the pH electrode is changed. It is recommended to
perform the pump calibration before each set of titrations, after the titrator is
left idle for several hours, or once daily.
Press MENU, select SETUP and select the corresponding measurement range
according to the table below:
Verify the electrode has been calibrated in 8.30 pH buff er.
Ensure the pump is primed with the correct titrant for the selected range (HI
84529-50 Low Range 20 Titrant or HI 84529-52 Low Range 50 Titrant, HI
84529-51 High Range 20 Titrant).
Sample preparation: Use a clean pipette add a precisely measured amount of
HI 84529-55 Calibration Standard to a clean beaker as indicated below:
Note: Failure to use a clean pipette will result in erroneous readings.
Fill the beaker up to the 50 mL mark with the distilled or deionized water.
Press CAL key. The instrument displays the date and time of the last electrode
calibration, and the last pump calibration. Press Pump key.
Unit Low Range 20 or 50 High Range 20
%l.a 0.01 to 0.20 0.1 to 2.0
°SH 0.4 to 8.9 4.4 to 88.9
°D 1.0 to 20.0 10 to 200
°TH 1.1 to 22.2 11.1 to 222.2
Pump
Calibration
Procedure
Low Range 20 - 1 mL
Low Range 50 - 2 mL
High Range 20 - 10 mL
Dosing
Pump Prime
Procedure