ACOEM Met One Instruments GAS-1060, Руководство пользователя

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Serinus 60 User Manual 3.0
Page 52
3.4.19 Digital Output Test Menu
Main Menu

Service Menu

Diagnostics Menu

Tests Menu

Digital Output Test Menu
Automated Test When started will automatically step through each output, turning
it On and Off.
Output 0..7 Displays the state of the output pin ( On or Off ) and allows the user
to manually set the state.
Note: Entering either the Digital Outputs Menu will temporarily disable all digital and analog
input/outputs. This will affect logging via these outputs. Exiting the menu restores automatic control.
3.4.20 Calculation Factors Menu
Main Menu

Service Menu

Calculation Factors Menu
The calculation factors provide the values used to calculate different aspects of measurement and
calibration.
Dilution Ratio Entering a value here will multiply the displayed and recorded
measurements by the dilution amount. For example, if the
instrument is measuring a source where the average concentration
is above the upper limit of the measurement range, a dilution
probe with a fixed ratio dilution ratio can be used to reduce the
level measured by the instrument, so for a 4:1 dilution ratio, enter
a value of 4.
Enter the ratio here so the instrument can display the correct
value on the instrument.
The default value is 1.00 (this indicates no dilution is applied).
Instrument Gain A multiplication factor used to adjust the concentration
measurement to the appropriate level (set at calibration).
Zero Offset NO2 This field displays the offset created from a NO
2
zero calibration.
This is the concentration measured from zero air and is subtracted
from all readings.
Extinction A measure of light scattering and absorption of NO
2
.
Background The value of the extinction measure without NO
2
present.
PTF Correction NO2 Displays the correction factor applied to the concentration
measurement. This correction is for changes in pressure,
temperature and flows since the last calibration.
Noise The standard deviation of the concentration. The calculation is as
follows:

Take a concentration value once every two minutes.

Store 25 of these samples in a first in, last out buffer.

Every two minutes, calculate the standard deviation of the
current 25 samples. This is a microprocessor-generated field
and cannot be set by the user.
This reading is only valid if zero air or a steady concentration of
span gas has been supplied to the instrument for at least one hour.