Teledyne 7500ZA - Infrared Gas Analyzer - Manual (Page 82)

Settings and Calibration Model 7500ZA
Teledyne Analytical Instruments 66
Average Value Reset
This mode is used to clear all average values, i.e. O
2
correction
average and O
2
average, and restarts averaging. All average values are
reset simultaneously. The indication value and output value is 0 ppm,
vol% or so at the time of the reset input (based on average period
settings).
Example:
If the average period was set to 1 hour:
• Sampling occurs every 30 seconds.
• Every 30 seconds, the average for the last 1 hour (time setting) is
output.
• At the instant of resetting, zero is assumed for all past values.
This means that the average value will not be correct for 1 hour
after resetting.
Backlight Timer
Automatic OFF setting of the backlight of the LCD unit is user
adjustable. When the specified time elapses during measurement screen
display, the backlight automatically switches off. Pressing any key will
turn the backlight back ON.