Filter
Top Products
Message/Test Measurement Field
The message field shows warning messages or test measurements. Tables 2.2 and 2.3
summarize the test measurements and warning messages and their meanings. Refer to
Section 2.3 for detailed information on viewing test measurements and warning messages
and clearing warnings.
Test Message Meaning
TIME=xx:xx:xx Current time-of-day (HH:MM:SS)
RANGE = xxxx wt% Full-Scale concentration for analog
output
O3 MEAS=xxxxx MV Current UV reading, measure channel
O3 REF=xxxxx MV Current UV reading, reference channel
PRESS=xxx PSIA Absorption cell pressure - psia
GAS TEMP=xxx C Temperature of the sample gas(deg. C)
LAMP TEMP=xxx C UV Lamp Temperature (deg C)
BOX TEMP=xxx C Internal box temperature (deg. C)
TABLE 2.2 TEST MEASUREMENTS
Warning Message Meaning
SYSTEM RESET Issued whenever Monitor is powered on
RAM INITIALIZED RAM was erased
UV LAMP WARNING UV lamp < 2500mV OR => 5000mV
UV LAMP SHUTDOWN UV lamp temp control not working
SAMPLE FLOW WARNING Sample flow < 700 cc/m
SAMPLE PRESSURE WARN Sample pressure < 15 or > 35 In-Hg-A
GAS TEMP WARNING Gas temp < 10 or > 50 deg. C
BOX TEMP WARNING Box temp. < 12 deg. C or > 55 deg. C
ANA LAMP TEMP WARN UV lamp temp < 51 or > 61 deg. C
V/F NOT INSTALLED V/F card not installed or bad
TABLE 2.3 WARNING MESSAGES
Menu Field
The menu field changes depending on the mode of the Monitor and the buttons that have
been pressed. It indicates the current function of each of the 8 pushbuttons below the
display.
The 8 pushbuttons below the display are programmable by the CPU in that their
functions change depending on the mode of the Monitor or the operations being
performed. The legend above a button identifies its current function. If there is no
legend above a button, it has no function and will be ignored if pressed.
P/N 02826B1 Teledyne API Model 450H O
3
Monitor Instruction Manual - Page 29