Metrohm 799 GPT Titrino - Manual (Page 75)

2.6 Parameters, key <PARAM>
799 GPT Titrino
71
2.6.8 Parameters for CAL
The calibration interval may be monitored, see page 7.
calibration parameters
determine the calibration procedure.
statistics :
Calculation of mean values and standard deviation,
see page 77.
>calibration parameters
meas.input: 1
cal.temp. 25.0 °C
buffer #1 pH 7.00
buffer #2 pH 4.00
buffer #3 pH OFF
signal drift 2 mV/min
equilibr.time 110 s
electr.id
sample changer cal: OFF
Calibration parameters
Measuring input (1, 2, diff.)
Measuring input 1 or 2 or differential amplifier;
Connection of electrodes, see page 215.
Calibration temperature (-20.0 ... 120.0 °C)
If a T sensor is connected, the temperature will be
measured.
The calibration temperature can also be input during
the calibration sequence.
pH value of first buffer (0...±20.00)
The pH value of the buffers can be put in during the
calibration sequence.
pH value of second and the following buffers
(0...±20.00, OFF)
<CLEAR> sets "OFF".
Buffers are requested until "OFF" is set. This gives an
n-point calibration. Up to 9 buffers.
A regression line will be calculated in calibrations with
more than 2 buffers.
Drift for measured value acquisition (0.5...999 mV/min,
OFF)
<CLEAR> sets "OFF".
"OFF" means that the measured value is acquired after
an equilibration time.
Equilibration time (0...9999 s, OFF)
<CLEAR> sets "OFF".
If a new equilibration time has not been entered, the
Titrino calculates an equilibration time appropriate to
the drift, see page 69. The measured value is acquired
as soon as the first criterion (drift or time) has been
met.
If drift and time are both set to "OFF", the measured
value acquisition is immediate.
Electrode identification (up to 8 characters).
Calibration with sample changer (ON, OFF)
In calibrations with a sample changer, there are no
parameters
>calibration parameters
>statistics