Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 41)

<6 BASIC OPERATION> 6-11
IM 11Y01B02-01E-A 4th Edition September 11, 2012-00
VALVE CONTROL
Typically used when the analyzer is configured with a
flow cell in an offline application.
VALVE CONTROL
The valve control includes manual and automatic
control.
MANUAL – allows for manual ON/OFF control of the
valve driver output signals.
TIME SEQUENCE – allows automatic valve switching
based on time sequence. It is normally used for
measurement that needs stream switching.
REMOTE OVERRIDE – allows remote valve control by
digital contact.
LASER SPECTRA & CONTROL
Displays Raw Detector Signal and Absorption
Spectrum as well as Gas Concentration, Gas
Temperature, Gas Pressure, Transmission, Laser
Temperature and Peak Center Position.
CAPTURE – allows a manual spectra capture (user will
be prompted to enter a unique file name for captured
spectra).
For Display Only:
CONTROL MODE – allows selection of Automatic
(laser temperature is controlled to keep peak centered
using peak center position as set point) or Manual
(laser temperature is controlled using integral laser
temperature sensor) – ONLY ADJUST WITH FACTORY
ASSISTANCE.
LASER TEMP – In manual mode allows adjustment of
laser temperature – ONLY ADJUST WITH FACTORY
ASSISTANCE.
LTSP LIMITS – setting of guard limits for laser
temperature set point – ONLY ADJUST WITH
FACTORY ASSISTANCE.
CUR CENTER – setting of center point for laser
current ramp –ONLY ADJUST WITH FACTORY
ASSISTANCE.