Teledyne 6020 - Photometric analyzer - Manual (Page 37)

Photometric Analyzer Operation 3
Part I 3-13 Teledyne Analytical Instruments
3.3.9 Hold/Track Setup
The 6020 has ability to disable the analog outputs and freeze the display
while undergoing a scheduled or remote calibration. The 6020 will track
changes in the concentration if calibration is started through the front
panel. To setup this feature, the operator must:
1. Enter the System menu:
_ -
2. Using the UP/DOWN switch, select MORE and Enter. The
Second System screen appears:
- -
- -
3.
The option on the right of the first row can be set to TRACK or
HOLD by toggling Enter switch. By selecting the TRACK option, the analog
outputs are enabled and with the display will track the concentration changes
while the instrument is undergoing scheduled or remote calibration (either zero or
span). By selecting the HOLD option, the analog outputs and display are
disabled and will not track the concentration changes while the instrument is
undergoing scheduled or remote calibration (either zero or span). In the HOLD
option, the analog outputs and display will freeze on the last reading before
entering calibration.
The analog outputs are both 0 to 1 volt outputs and both 4 to 20 mA
outputs.
3.3.10 Calibration/Hold Timer Setup
This Calibration Timer lets the operator adjust the time the instrument
purges the calibration gas prior to actually starting the calibration computations.
The Sample timer lets the operator adjust the time the instrument purges sample
gas after finishing a calibration before it lets the analog outputs and display track
the change in concentration.
This function and the TRACK/HOLD feature will prevent false alarms
while performing remote or autoscheduled calibrations. These functions are not
applicable if the calibration is initiated through the front panel. To enter the
Calibration/Hold Timer function, you must: