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M102E/M501 TRS M102E OPERATING INSTRUCTIONS
(Addendum to M101E Manual - P/N 04740 Rev A)
5. M102E OPERATING INSTRUCTIONS
NOTE
For the most part the operation instruction for the M102Eare the same as those
described in Chapter 6 of the M101E Manual - P/N 04740 Rev A with the exception that
the terms “TRS” & “total reduced sulfur” should be substituted for the terms “H
2
S” &
“hydrogen sulfide” unless otherwise stated in this addendum.
5.1.1. M102E Analog Output Signals
The information contained in Section 6.7.1 of the M101E Manual - P/N 04740 Rev A is correct
except that the test channel output is located on analog output A3 rather than A4 .
ANALOG OUT
A1 A2 A3 A4
+ - + - + - + -
SO
2
concentration
out
p
uts
HIGH range when
DUAL mode is selecte
d
Test Channel
Not Used
LOW range when
DUAL mode is selecte
d
Figure 5-1: Analog Output Connector Key
NOTE
On analyzers with the SO
2
-TRS multigas gas measurement option available, the outputs
of A1 and A2 correspond to:
Output SO
2
SO
2
– TRS TRS
Channel Mode Mode Mode
A1 ÅÆ SO
2
ÅÆ SO
2
ÅÆ TRS
A2 ÅÆ SO
2
ÅÆ TRS ÅÆ TRS
As the instrument switches from TRS 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 not being measured will
continue to report the last valid reading.
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