Environnement CO12M, Техническое руководство

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Environnement
S.A
CO12M
Duplication prohibited
DECEMBER 2011
3–32
3.3.4.2 CONFIGURATION

Measurement mode
This screen is used to program:

the response time from about 20 sec. to 60 sec.. The first digit programmed number activates
(1) or de-activates (0) the automatic response time function, the second item divides the basic
electronic integration time (60 sec.)
Example : Response time = 13 gives an automatic response time with a minimum of
20 sec.
Response time = 03 gives an integration time fixed to 20 sec.
The advised value is: Response time = 11.
(see chapter 2, “Principle of the automatic response time”)
This screen gives also an access to the Dilution function: to measure very high concentrations (ex.
founded in industrial environment), it is necessary to bring them to values corresponding to the range
of analyzer by inserting a dilution system in the sampling line to get :
C
analyzer inlet
= C
SAMPLE
/ K
dilution
The real concentration display is obtained by application of a K Dilution multiplying factor to the
measured concentration.
“Latch DAC” field : when this field is ON, the analog outputs are latched during the Zero, Span,…
Cycles, in order to not perturb data loggers.
“Maintenance” field : is used to trigger one of the alarm relays (see § 3.3.4.5 and table 3.1). The
maintenance mode is reminded on the Measurement screens.
"Starting screen" field allows to choose the Warm-up screen to display when starting on the analyzer.
4 choices are offered :
Instantaneous, Synoptic, Average, Graphic
, corresponding to the menu
MEASUREMENT
.
"Back light saver" field : screen blackout after 8 hours of no user handling on analyzer.
"Zero filter life time" field : (in days) lasting duration before zero filter refilling.