Clarus 600/680 User’s Guide
4-35
2. Allow the system to stabilize for about 20 min, then open the detector cover.
3. Locate the TCD Balancing Potentiometer (see Figure 4-11). Adjust the
potentiometer until the Autozero display reads between 0.0 and 20.0 mV.
4. Wait for drifting to stop as indicated by a constant reading on the display.
5. Reset the potentiometer to produce a reading between 0.0 and 20.0 mV.
Using a TCD with the Autosampler or GSV
When using a TCD with an autosampler or a GSV (Gas Sampling Valve) at high
sensitivity, a minor baseline upset may occur at the time of injection.
If the signal goes below zero, create an Autozero timed event to re-zero the detector
back before peaks of interest elute. Initiate a test run to determine the timed event
setting.