User Guide

Operating Instructions Teledyne API M100E Analyzer Operation Manual
90
6.7.6. AUTO RANGE MODE (AUTO)
In AUTO range mode, the analyzer automatically switches the reporting range between two user-defined ranges
(low and high). The unit will switch from low range to high range when either the SO
2
concentration exceeds 98%
of the low range span. The unit will return from high range back to low range once both the SO
2
concentration
falls below 75% of the low range span.
In AUTO Range mode the instrument reports the same data in the same range on both the A1 and A2 outputs
and automatically switches both outputs between ranges as described above. Also, the RANGE test function
displayed on the front panel will be replaced by two separate functions:
RANGE1: The LOW range setting for all analog outputs.
RANGE2: The HIGH range setting for all analog outputs.
The high/low range status is also reported through the external, digital status bits (refer to Section 7.3.1.1).
To set individual ran
ges press the following keystroke sequence.
SAMPLE RANGE = 500.000 PPB SO2 =XXX.X
< TST TST > CAL SETUP
SETUP X.X
PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
SETUP X.X RANGE CONTROL MENU
MODE SET UNIT EXIT
SETUP X.X RANGE MODE: SNGL
SNGL IND AUTO ENTR EXIT
SAMPLE ENTER SETUP PASS : 818
8 1 8 ENTR EXIT
EXIT x 2 returns
to the main
SAMPLE display
SETUP X.X RANGE MODE:
A
UTO
SNGL IND AUTO ENTR EXIT
SETUP X.X RANGE CONTROL MENU
MODE SET UNIT EXIT
SETUP X.X HIGH RANGE: 500.0 Conc
0 0 5 0 0 .0 ENTR EXIT
SETUP X.X LOW RANGE: 500.0 Conc
0 0 5 0 0 .0 ENTR EXIT
Toggle the numeral
keys to set the
LOW and HIGH
range value.
ENTR accepts the
new setting, EXIT
ignores the new
setting.
Figure 6-13: SETUP RNGE – Auto Range Mode
NOTE
In AUTO range mode, the LOW and HIGH ranges have separate slopes and offsets for computing SO
2
concentration.
The two ranges must be independently calibrated.
04515F DCN6048