Heidolph Hei-VOLUME Distimatic Pro Betriebsanleitung Seite 119

Operation
The
evaporation flask and thus the amount of educt that is evaporated
until the refilling step.
The
changes to the high status after filling. If the stagnation time
expires completely, the automatic residue emptying is initiated
(depending on the set of glassware and the parameterization) or
the piston must be emptied manually.
End of process in sensor mode
In sensor mode, the process sequence is stopped under one of the following conditions:
➜ Educt container runs empty
filling time
– After the
 Status change of the feed sensor S1 (
– Unplanned end is initiated: Additional evaporation time is started (setting via
process parameters, see section "Parameter sensor mode" on page 119).
– After the additional evaporation time has elapsed, the system switches to a safe
operating state: Peripheral shutdown (recirculation chiller and vacuum pump
off, evaporator in standby).
➜ Maximum filling rate reached
– Using the process parameter
Evaporation time
a defined concentration of the residue (setting via process parameters, see
section "Parameter sensor mode" on page 119).
➜
Maximum number of distillate drainage steps reached
– Use the process parameter
Evaporation time
specified in order to achieve a defined concentration of the residue (setting via
process parameters, see section "Parameter sensor mode" on page 119).
➜
Residue level in the evaporation flask reached, flask level sensor S4 remains
permanently in the status
is reached.
– In this case, the sensor control is stopped and the residue is drained
automatically or manually. The draining process depends on the glassware
(with/without automatic drainage of residue) and the default
on/off
in the
"Parameter sensor mode" on page 119).
➜ Maximum filling level in distillate/residue container  Level sensor S8 (distillate
container) or S9 (residue container) indicate by a status change from
that the maximum level has been reached (option).
Both of the level sensors S8 (distillate container) and S9 (residue
container) are available as optional accessories and are not included
in the standard scope of delivery!
The level sensors prevent overflow of the monitored vessel. When a
level sensor is triggered, the system is switched to a safe operating
state.
filling time
defines the time until the next filling of the
stagnation time
has elapsed, the evaporation flask is no longer filled
max. filling: Additional
a maximum filling rate can be set in order to achieve
to empty max. distillate: Additional
, a maximum number of distillate drainages can be
high
(medium contact), nominal
Default
window (setting via process parameters, see section
runs as soon as the level sensor S4
high low
to ).
stagnation time
118
Drain residue
low high
to