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Teledyne API – T101 Operation Manual Operating Instructions
71
NOTE
On analyzers with the multigas option activated (see Sections 4.5.1 and 6.8) the titles
displayed on the instrument’s front panel during the previous operation appear as:
LOW range appears as SO2 RANGE
high range appears as H2S RANGE
As the instrument switches from H
2
S mode to SO
2
mode and back, only the reporting
range and analog output associated with the gas currently being measured will be active.
The reporting range and analog output for the gas no being measured will continue to
report the last valid reading.
4.4.4.6. 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 the H
2
S concentration exceeds 98% of the low range span. The unit will
return from high range back to low range once both the H
2
S concentration falls below
75% of the low range span.
When set up to measure a single gas (H
2
S or SO
2
), 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.
To select auto range mode and set the upper span limits for the high and low ranges, press
the following menu button sequence.
SAMPLE RANGE = 500.0 PPB H2S =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
EXITx 2returns
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 Con
c
0 0 5 0 0 .0 ENTR EXIT
SETUP X.X LOW RANGE: 500.0 Con
c
0 0 5 0 0 .0 ENTR EXIT
Toggle the numeral
buttons to set the
LOW and HI G H
range value.
ENTR accepts the
new setting, EXIT
ignores the new
setting.
07266B DCN6485