Metrohm 751 GPD Titrino - Manual (Page 48)

2.6 Parameters, key <PARAM>
751 GPD Titrino
45
start rate OFF ml/min
time interval 2 s
titr.direction: auto
dos.element: internal D0
meas.input: 1
I(pol) 1 uA
U(pol) 400 mV
electrode test: OFF
temperature 25.0 °C
Start rate for data acquisition (0.01...150 mL/min, OFF)
<CLEAR> sets "OFF".
Measured values will be acquired only if the current
rate is below the start rate. This criterion effective 10 s
after the start.
Time interval for data acquisition (1..999 999 s)
Time interval for the entry of the values in the
measuring point list. The measuring point list can
contain max. 500 points.
Direction is set automatically (+, -, auto)
auto: The direction is set automatically by the Titrino
(sign [U
init
- EP]).
+: Direction of higher pH, higher voltage (more
"positive"), larger currents.
- : Direction of lower pH, lower voltage, smaller
currents.
Selection of dosing element (internal D0, external D1,
external D2)
internal D0: internal buret of the Titrino
external D1/2: buret D1, D2, resp.
Measuring input for pH and U. (1, 2, diff.)
Request only with measured quantities pH and U.
Measuring input 1 or 2 or differential amplifier;
connection of electrodes, see page 215.
With polarized electrodes, instead of the measuring
input the
polarization current (-127...127 uA)
or the
polarization potential (-1270...1270 mV, in steps of 10
mV)
is inquired.
Electrode test (OFF, ON)
Test for polarized electrodes. Performed on
changeover from the inactive standby state to a
measurement. "OFF" means that the test is not
performed.
Temperature (-170.0...500.0 °C)
If a T sensor is attached, the temperature is measured
continuously and the pH values corrected accordingly.
The last measured value is entered as the
"temperature" parameter.