1 O2 0 % VOL
1 O2 0 % VOL
1 O2 0 % VOL
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ZERO
CALIBRATE
SET CAL BOTTLE
100
The bottom line of the display shows the command available for selection and is altered by
rotating the jog wheel.
5.1 The Zero Command
5.2 The Calibrate Command
1 O2 0 % VOL
ZEROING
With the panel in normal display mode,
rotate the jog wheel to the desired
channel and press the jog wheel. Now
rotate the jog wheel until the bottom line
of the display reads zero. At this stage
apply zero gas to the gas head and allow
the reading to stabilise.
Once the reading has stabilised
press the jog wheel and the bottom
line will change to read zeroing. The
Tocsin 700 now averages the
incoming signal for a few seconds
before applying any necessary zero
correction. Once complete the
bottom line of the display changes to
read ‘PASSED’ or ‘FAILED’ . If the
zero operation passed the zero
correction is applied.
1 O2 0 % VOL
CALIBRATING
This function allows the user to calibrate a channel.
As in the case of the zero function, select a channel to
be calibrated and rotate the jog wheel until the
'Calibrate' option appears on the bottom line of the
display.
The display set bottle will appear
for a few seconds to prompt the
input of the calibration gas set
point.
Anticlockwise to decrease the value.
The bottom line of the display now changes to
allow the input of the calibration gas value. The
display will indicate the last value used to
calibrate the channel. Rotate the jog wheel:
Clockwise to increase the value.
With the calibration gas applied to the gas head allow the reading
to stabilise then press the jog wheel. The display will change to
'calibrating' for a few seconds as the reading is averaged and new
calibration constants calculated. PASSED or FAILED will be
displayed and once complete the display will return to step A.
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