Yokogawa In-Situ Gas Analyzer TDLS200 - Manual (Page 73)

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IM 11Y01B01-01E-A 6th Edition :Feb 13, 2013-00
<6. BASIC OPERATION>
ONLINE VALIDATIONS
CHECK GAS 1 – allows user to select and configure the on-line
validations for check gas #1. The configuration options include
Manual or Automatic.
Automatic has selections for Local Initiate, Remote Initiate, Time
Initiate as well as Settings for these options
CHECK GAS 2 – allows user to select and configure the on-line
validations for check gas #2. The configuration options include
Manual or Automatic.
Automatic has selections for Local Initiate, Remote Initiate, Time
Initiate as well as Settings for these options
ADVANCED DATA MENU
ALARM HISTORY – shows chronological list of analyzer’s most
recent alarms
CAL HISTORY – shows chronological list of analyzer’s recent
calibrations
SPECTRUM CAPTURE – selection of; AUTOMATIC (user will
be prompted to select capture interval, number of UPDATES
to trigger capture, RELATIVE concentration level trigger which
is a % of reading change, or ABSOLUTE concentration level to
trigger capture); in addition the software will prompt for number
of spectra to capture when a Warning or Fault occurs. MANAUL
selection will result in spectra capture only when requested by
user.
CAUTION! By setting a high spectrum capture rate (i.e. a low
number between up-dates), the memory can very quickly fill
up and because the system uses a First-In First-Out basis, you
may lose many data files for results (.res) and spectrum (.spe).
As a guide, spectrum is captured every 200-300 up-dates and
1-5 every Warning and 1-5 every Fault. The spectrum capture
rate can be increased by lowering the up-dates value on a short
term basis for a particular monitoring period but please ensure it
is returned to normal rates.
An example could be the monitoring of a dirty process whereby
transmission becomes very low during certain known process
operating conditions. The spectrum capture rate could be
changed to 2 for a 1 hour per period when these conditions
exist and then set back to 200-300 after. This then gives a lot of
spectrum data to review for the specific operating conditions.