Energizer ATX612 - Manual (Page 10)

14 15
CODE 0
PRESS
• To continue full calibration, press (E) and the instrument
will display the first sensor to be calibrated along with
the calibration gas setting. The message APPLY CAL
GAS will scroll across the bottom of the display.
NOTE: If the gas concentration does not match the
setting, press the MODE switch to abort
calibration. See Section 6.1, SETSPAN to change
the calibration gas settings.
NOTE: APPLY CAL GAS means connect the sample
tubing to the appropriate calibration gas cylinder
with either a ILPM or preferrably a demand flow
regulator. Connect the tubing to the gas sample
inlet of the ATX612. Turn on gas supply.
• Apply the calibration gas. The instrument will wait for
five minutes to sense that calibration gas has been
applied before aborting and failing calibration. When the
sensor detects a gas concentration greater than 50% of
the calibration gas value, the display will indicate the
current full span value for that sensor. The message CAL
IN PROGRESS will scroll across the bottom of the
display.
• When calibration of the sensor has been successfully
completed, the instrument will automatically step to the
next sensor to be calibrated and the preceding step will
be repeated.
• When all sensors have been calibrated successfully the
instrument will emit a short beep and the sensor
configuration will be shown on the display.
• If calibration results in marginal sensor span values,
sensor identifiers will flash on the display. Marginal
calibration will occur if the sensor full span value is less
than 70% of the applied gas concentration. A marginal
sensor calibration may be an early warning sign that the
sensor will soon need to be replaced.
NOTE: If the sensor full span value is less than 50% of
the calibration gas value, calibration will fail and
the instrument will immediately return to the real
time READING mode. When failed calibration or
low sensitivity is indicated, verify that the
calibration cylinder has not emptied or that the
cylinder expiration date has not passed.
• After displaying the sensor configuration, the
instrument will automatically return to the real time
READING mode.
6.
C
HANGING
I
NSTRUMENT
S
ETTINGS
Instrument settings, including alarm values, calibration gas
concentrations and security code, may only be accessed
and changed during the instrument startup sequence.
The (+) and (-) hidden keys are used to set instrument
alarm and calibration values. Refer to page 6, Figure 1 for
the location of the hidden keys.
To access the instrument menus:
• Turn the ATX612 off and back on again.
• When the display shows the warm up timer, press the
plus (+) and minus (-) keys simultaneously.
If the instrument security code has been set to a value
other than “0”, the CODE screen will be displayed along
with the scrolling prompt PRESS (+) OR (-) TO SET (E)
TO ENTER. Use the (+) and (-) keys to input the correct
security code value and press (E). When the correct code
has been entered successfully, the instrument will
immediately enter the settings mode.
The settings mode consists of three functions:
SETSPAN
ALARMS
CODE
The scrolling prompt, PRESS (+) FOR NEXT (E) TO
SELECT appears on each screen. Press the (+) to step
through the list and (E) to select any of the functions.
Pressing the MODE switch at any one of the functions
will cause the instrument to return to the normal
operating mode.
6.1 S ETSPAN
The SETSPAN function allows the user to set the
combustible sensor monitoring range to either LEL or CH
4
and to set the calibration gas values for the combustible
and toxic sensors.
GO CAL
PRESS
25 LEL
APPLY
SETSPAN
PRESS