UNI MP100 User’s Guide
7
4.4
Configuration Mode
In Config mode, the user can change parameters and calibrate the unit. In general, use the Left
Key to increase the number or confirm an operation, and use the Right Key to move the cursor or
go to the next menu item.
4.4.1
Entering and Exiting Config Mode
Press and hold the Left Key and the Right Key together for 3 seconds until the password screen
is displayed,
followed by
, with one digit or cursor flashing, to prompt the user to
enter the password. The default password is 0000. Use the Left Key to increase the number, and
the Right Key to move the cursor, and the Left “OK” Key again to accept the password input and
enter Config mode. If the digit input is incorrect, use the Right Key to move the cursor and Left
Key to change the input.
NOTE
: The MP100 pre-set password is 0000.
To exit Config Mode, press the Right Key until
is displayed, and acknowledge with the
Left Key
to return to Normal Mode.
4.5
Sensor Calibration and Bump Test
Before the unit can monitor gas correctly, it needs to be calibrated using zero and span gas.
Calibration and Bump Tests are recorded in the instrument datalog for compliance purposes.
4.5.1
Zero (Fresh Air) Calibration
Zero calibration sets the baseline for the sensor. It is preferably done in fresh air at the same
ambient temperature and humidity as will be used for measurements. However, nitrogen, dry
cylinder air, or other gas source known to be free of detectable compounds can also be used. One
exception is that for an oxygen (O
2
) sensor the Fresh Air Calibration sets the value to 20.9%, so
air must be used.
From the
menu, press the Left Key to start a zero calibration. The unit displays a
15-second count-down followed by the calibration result as either
or
. The
user can abort the zero calibration during the count-down by pressing the Right Key, after which
is displayed.
