Manual

2.2 Automatic sequence of a determination
768 KF Oven
6
2.2 Automatic sequence of a determination
The automatic sequence facilitates the work when a KF Titrator is attached. After the start,
all steps necessary for the determination are performed at the KF Oven.
After being switching on, the oven heats up to the set
temperature (when "auto preparation: on" is set in
<CONFIG>). Until the set temperature is reached, the
"READY" lamp flashes.
Once the set temperature is in the range of the start-
ing temperature, the "READY" lamp is on continu-
ously.
Set the desired gas flow (e.g. 100 mL/min). Set gas
flow when oven is hot!
Position the sample boat and the guide rod in the cold
part of the insert tube.
Start the sequence at the KF Oven with the <START>
key.
If a purge time has been entered, this is allowed to
elapse.
The valve switches from "PURGE" to "TRANSFER",
i.e. the gas is now led to the titration vessel.
If a conditioning time has been entered, this is al-
lowed to elapse.
The attached titrator is tested to see whether the ti-
tration vessel is conditioned (if "start if cond ok: on" is
set in <CONFIG>), the titrator is then started auto-
matically and the sample boat moved to the hot part
of the oven. The sample is heated, the evolved water
led to the titration vessel with the carrier gas and
there titrated.
On completion of the titration and if "valve control" is
ON, the valve is automatically set to "PURGE" and
the sample boat moved out of the hot part.
If "valve control" is OFF, the valve remains on
"TRANSFER".
When the set temperature has been reached, "READY"
lights up and the oven is ready for the next determina-
tion.
READY
READY
START
purge time 13 s
cond.time 5 s
VALVE
TRANSFER
VALVE
TRANSFER
VALVE
PURGE
READY