Teledyne 3000ZA2G - Zirconium oxide analyzer - Manual (Page 61)

Trace Oxygen Analyzer Operation
Teledyne Analytical Instruments 49
4.6.1 Setting the Analog Output Ranges
To set the ranges, enter the range function mode by pressing the
Range button on the front panel.
L—10 M—1000
H—250000 Mode—AUTO
Use the ◄►arrow keys to blink the range to be set: low (L),
medium (M), or high (H).
Use the ▲/▼ arrow keys to enter the upper value of the range (all
ranges begin at 0 ppm). Repeat for each range you want to set. Press
Enter
to accept the values and return to Analyze mode. (See note
below.)
Note: The ranges must be increasing from low to high, for
example, if range 1 is set as 0–100 ppm and range 2 is set
as 0–1,000 ppm, range 3 cannot be set as 0– 500 ppm
since it is lower than range 2.
Ranges, alarms, and spans are always set in ppm units (over the entire
0-250,000 ppm range), even though all concentration-data outputs change
from ppm units to percent when the concentration is above 10,000 ppm.
4.6.2 Fixed Range Analysis
The auto ranging mode of the instrument can be overridden, forcing
the analyzer DC outputs to stay in a single predetermined range.
To switch from auto ranging to fixed range analysis, enter the range
function by pressing the Range button on the front panel.
Use the ◄►arrow keys to move the blinking over AUTO.
Use the ▲/▼ arrow keys to switch from AUTO to FX/LO, FX/MED,
or FX/H I to set the instrument on the desired fixed range (low, medium,
or high).
L—10 M—1000
H—250000 Mode—FX/ LO
or