Metrohm 799 GPT Titrino - Manual (Page 61)

2.6 Parameters, key
799 GPT Titrino
57
I(pol) 1 µA
U(pol) 400 mV
electrode test: OFF
low lim. pH -20.00
up lim. pH 20.00
**titr
action: none
**titr.
temperature: OFF
**titr.
low lim. -170.0 °C
up lim. 500.0 °C
action: none
**titr.
assign output L10: none
violated limit: any
output L10: pulse
With polarized electrodes, the request of the measuring
input is replaced by one regarding the
polarization current (-127...127 µA),
or the
polarization voltage (-1270...1270 mV, in steps of 10
mV)
Electrode test (OFF, ON)
Test for polarized electrodes. Performed on the
switchover from inactive basic status to a
measurement. "OFF" means the test is not performed.
Limit values for the measured value (input range
depends on the measured quantity:
pH: 0...±20.00
U, Ipol: 0...±2000 mV
Upol: 0...±200.0 µA)
Action if a limit is exceeded (end, hold, wait, none)
end: Abort
hold: Hold reagent addition until manually restarted.
wait: Hold reagent addition until limits are again
complied with, then continue automatically.
Monitoring of temperature (ON, OFF)
With "on", the following requests:
Limits (-170.0...500.0 °C)
Action if a limit is exceeded (end, hold, wait, none)
end: Abort
hold: Hold reagent addition until manually restarted.
wait: Hold reagent addition until limits are again
complied with, then continue automatically.
Assignment of output I/O lines (meas, temp, all, none)
L10 output sets a signal when values are out of limit
(pin 8).
With an assignment, the following requests:
Assignment of a violated limit (any, upper, lower)
The signal will be set if the assigned limit is violated.
Type of signal to be set when limits are violated. (active,
pulse)
active: Output line is set to 0 V.
pulse: Pulse > 100 ms.
Important: An active line will be set inactive with an
impulse!