Model 202 Ozone Monitor Manual Rev. J-4
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3.6.
Data Averaging and Data Logging Using the Menu
When first turned on, the instrument will start making measurements at a rate of once
every 10 s. Data, along with up to three external voltages, may be logged in the
internal data logger. Up to 16,383 data lines containing log number, ozone mixing
ratio, internal temperature, internal pressure, volumetric flow rate, date, and time may
be stored in internal memory, corresponding to an operational time of 1.9 days.
Averaging times of 1 min, 5 min, and 1 hr also may be selected from the menu,
thereby allowing the instrument to operate for 1.6 weeks, 1.9 months and 1.9 years,
respectively, before filling the memory. The maximum number of data lines is halved
if the three analog inputs are logged along with the other data.
3.7.
Menu Definitions and Menu Tree
The Menu is accessible from the LCD display of the Model 202 Ozone Monitor. Menu
options are defined in the table below and shown in the drawing on the next page.
Dat
: Data Menu
Xmt
: Transmit stored logged data
End
: End data logging
Log
: Start data logging and write over existing logged data
SD
: Transmit data to SD data logger
Avg
: Averaging Menu
10s
: 10 seconds,
1m
: 1 minute,
5m
: 5 minute,
1h
: 1 hour
Cfg
: Configurations Menu
D/T
: Date and Time Setting
Cal
: Calibration Menu
Fm
: Flow Meter calibration menu
O3
: Ozone measurement calibration menu
I/O
: Input and Output Menu
Bdr
: Baud Rate selection menu
Ext
: External input and output menu
V_In: Voltage Input menu
V_Out: Voltage Output menu
Hrs
: Display number of hours of use
LCD
: LCD back light menu
Unt
: Units menu
T/P
: Temperature and Pressure units selection
O3
: Ozone units selection
Lmp
: Lamp test selection
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Note: Rotating the Select Switch while making measurements will momentarily
display the instrument’s flow rate on the screen.
