Shimadzu GC-2014, Instruction Manual

Page: 177 / 318

13 Detector
13.2 Thermal Conductivity Detector (TCD)
165
GC-2014
13.2.2
Setting the detector
13.2.2.1
Screen description
Press the [DET] key to display the Detector main screen shown in Fig. 13.3.2. Here, set
the detector temperature, the detector gas flow rate, etc.
When the detector is configured in the analytical line, the output signal settings appear
in the lower portion of the screen.
13.2.2.2
Parameter list
DETECTOR CONTROLLER
Selection: On/Off, Default: On
When a detector is set to “On”, its current and voltage are controlled.
When a detector is configured in an analytical line and set to “On”, the detector is con-
trolled and its signal monitored. However, the temperature increases up to the set value
if the detector is configured in the flow line even if detector control is Off.
TEMP
Range: 0.0
−
400.0 °C, Default: 25.0 °C
Set the detector temperature. The TCD sensitivity is proportional to the difference in
temperature between the detector and the filament. Accordingly, the sensitivity
increases as the detector temperature decreases. However, the detector is normally set
approximately 10 °C higher than the final column oven temperature: this prevents con-
tamination in the TCD cell.
To set the maximum temperature limit, refer to
“16.6.4 Setting the maximum
temperature limits” .
Fig. 13.2.2 [DET] key main screen