ACOEM Met One Instruments GAS-1060, Руководство пользователя

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Operation Page 45
Conversion Factor
[gravimetric units]
This option only appears if concentration units are set to
gravimetric (
mg/m3 , μg/m3 or ng/m3 ). Select either 0 °C , 20 °C or
25 °C . This sets the standard temperature used from conversion
for measured volumetric values.
Temperature Units Select the units that temperature will be displayed in ( Celsius ,
Fahrenheit or Kelvin ).
Pressure Units Select the units that the pressure will be displayed in ( torr , PSI ,
mBar , ATM or kPa ).
Flow Units Select the units that the sample flow will be displayed in ( slpm or
L/min ).
Date Displays the current date and allows users to edit if required.
Time Displays the current time and allows users to edit if required.
Backlight Select the length of time the screen and keypad backlight remain
on after a button press. The setting
Always Off means the
backlight never turns on; the setting Always On means the
backlight never turns off.
Home Screen This field allows the user to display concentrations on the Home
Screen in two formats. The first is Inst. only which displays only
the instantaneous concentration reading, the second is Inst & Avg
which displays both instantaneous and average concentration on
the
Home Screen . The average is measured over the time period
set in Measurement Settings Menu (refer to Section 3.4.9).
Char 0 has Slash When enabled, the instrument will display the zero character with
a slash (
0 ) to differentiate it from a capital ‘O’.
3.4.9 Measurement Settings Menu
Main Menu

Measurement Settings Menu
Average Period
Set the time period over which the average will be calculated:
Minutes ( 1 , 3 , 5 , 10 , 15 or 30 ) or hours ( 1 , 4 , 8 , 12 or 24 ).
Filter Type
Sets the type of digital filter used ( None , 10 sec , 30 sec , 60 sec , 90
sec , 300 sec or Rolling ).
The filter type set to None is the factory default setting. No filter
applied to the readings gives the best overall performance for this
instrument.
Rolling Size
[Rolling filter]
Sets the number of measurements included in the rolling average.
Only available if the
Filter Type is set to Rolling .
Backgrounds The default setting is enabled. When enabled it allows the user to
edit the background interval via the following fields
Time , Repeat
and Units .
When any of the backgrounds fields are edited the instrument will
automatically calculate the date and time the next background is
due to run and display under each relevant field.
Date Displays the date that the next background is due to run.