Metrohm 763 PVC Thermomat Manual - Manual (Page 64)

4.5 Methods
763 PVC Thermomat
57
If no temperature sensor is available for the
Delta T
determination, a value of +0.6 °C can be
entered for temperatures of 160 °C to 200 °C
(this value was determined using 5 g silicone oil
and a gas flow of 7 L/h nitrogen).
Gas flow
Gas flow through sample. It cannot be set in-
dividually for each block; the flow rate for both
blocks depends always on the value entered in
the method loaded for Block A.
Range: 4...15 L/h
Start options
Start delay
Delay period until start of measurement.
Range: 0...1000 min
Start mode Mode for start and stop of the channels:
per channel
All 8 channels can be started and stopped indi-
vidually.
per 2 channels Each 2 channels can be started and stopped
together.
per block The 4 channels in one block can be started and
stopped together.
Stop criteria
Time Time until automatic termination of the determi-
nation.
Range: 0.1...100 h
Conductivity Limit value for conductivity. If this value is
reached then the determination is terminated
automatically.
Range: 1...400 µµS/cm
Endpoint(s) Automatic termination of the determination
when each active channel has reached all end-
points.
Shut off at end of determinations
Heater Automatically switches off the heating at the
end of the determination.
Gas flow Automatically switches off the gas flow at the
end of the determination.
If the gas flow is automatically switched off,
the reaction vessels must be removed
immediately from the PVC Thermomat after
the end of the determination. If the reaction
vessels are not removed, the instrument can
be damaged.