FALCO Instrument User Manual V1.2R
Unrivalled Gas Detect
ion.
Page 32 of 46
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cannot be confirmed zero air should be used. If using a cylinder attach the tubing between the Falco
and the gas regulator.
2)
Enter zero cal mode by moving the cursor to the zero cal icon
and then press the
Enter
key
.
The zero cal screen is described below:
The top value is the live ppm reading from the Falco (based on previous
calibration)
The bottom number indicates this is the zero cal screen
1)
The live reading will move towards zero as the sensor housing is purged. After 2 minutes press the
Enter
key to set the zero level.
The Status Light will then blink briefly to confirm the setting has been made. The top reading will then
change to 0.0ppm.
2)
Remove the Zero air
3)
Press the button to exit zero mode.
NOTE:
The cursor cannot be moved from next t
o the “set” symbol
. The only function the user can carry
out is to press the
Enter
key to set the zero level to the current ppm reading.
Span 1
Span 1 is used to calibrate Span 1 of the Falco.
1)
Attach the span gas cylinder to the Falco.
2)
Enter Span 1 mode by moving the cursor to the Span 1 icon
and then press the
Enter
key
.
The
Span 1 screen is described below:
The top value is the live ppm reading from the Falco (based on previous
calibration)
The lower value is the span 1 concentration (100.7ppm in this example).
3)
If the Span 1 concentration is not the same as the calibration gas concentration it must be changed.
To change the Span 1 concentration, move the cursor
to the lower value and press the
Enter
key. A new screen with that value is then displayed.
Change this value to match the level specified on the calibration gas bottle as follows. A cursor
is
displayed under the first digit of the value. Press the
Up
or
Down
key to change it.
Press the
Right
key to move to the next digit. Repeat the above procedure to change it as required.
