Track/Hold Screen - Teledyne TEXIO PTE6-200 Operating Instructions Manual

Percent Oxygen Analyzer
reentered. To log out, press the System button from the Menu screen
and then press Logout.

4.5.3 Track/Hold Screen

The Track/Hold function is typically used to keep the analog output
from tracking a sample during a calibration. Establishing a HOLD on the
output signal avoids producing unnecessary alarms when the span or
zero gas is introduced into the analyzer during calibration.
When TRACK is selected, the analog outputs (0-1 VDC and 4-20
mA) and the range ID contacts will track the instrument readings during
calibration (either zero or span). TRACK is the factory default.
When HOLD is selected, the analog outputs (0-1 VDC and 4-20
mA) and the range ID contacts will freeze on their last state before
entering one of the calibration modes. When the instrument returns to
the Analyze mode, either by a successful or an aborted calibration, there
will be a three-minute delay before the analog outputs and the range ID
contacts start tracking again.
Note that the concentration alarms freeze in their last state before
entering calibration regardless of whether HOLD or TRACK is selected.
But, when HOLD is selected, the concentration alarms will remain
frozen for the time displayed in the second line of the TRAK/HLD menu
after the analyzer returns to the Analyze mode.
The factory default is three minutes, but the delay time is program-
mable.
Teledyne Analytical Instruments
Operation
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