Hach-Lange BIOGAS User Manual - Manual (Page 39)

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Standard Operations
5.10.2.1 Edit a reagent
1. Enter the Reagent menu and press 5 (Reagent
library).
2. Press the validation key and select the reagent
to be edited from the list.
3. Press 2 Edit reagent.
Note: The RIGHT and LEFT arrow keys allow you to
move from one screen to the other.
4. Enter the unit: mM = mmol/l, M = mol/l,
mN = meq/l or N = eq/l). The unit is indicated on
the reagent bottle.
5. Select Titre = Enter or Calibrate.
•
Select Enter if you already know the titrant
concentration and do not wish to perform a
calibration.
• Select Calibrate if you wish to perform a
calibration. Enter the calibration parame-
ters.
6. Select the type of method for Mode. You have
the choice between End Point, Monotonic IP,
Dynamic IP or Continuous IP.
7. Select the measurement mode for the
calibration (pH, mV or mV at imposed current).
8. Enter the Periodicity.
Indicates the maximum period of time between
two calibrations. If the period of time has
elapsed, titrations can no longer be performed
using this titrant.
9. Enter the Number of tests.
This is the number of times the calibration
method will be repeated, i.e. the number of
beakers to prepare for the calibration.
10. Select Temperature.
• If a temperature sensor is in use, select
Probe.
• If the temperature is entered manually via
the numeric keypad, select Entered.
• If the calibration is to be performed at 25°C,
select Fixed 25°C.
Note: If you have selected Temperature = Probe, a
temperature sensor must have been selected in the
Parameters screen.
Note: If you want a message to be displayed upon
starting the calibration, select Notification = Yes
then enter the message (3 lines of 32 characters
maximum).