17
16
Q
UICK
C
ALIBRATION
The “Quick Calibration” mode allows you to turn this
feature on or off. For details on the Quick Calibration
feature, please refer to Quick Calibration, page 25.
Z
ERO
S
ENSORS
The “Zero Sensors” mode allows you to adjust the
baseline of toxic and explosive gas sensors to zero and
span calibrate the oxygen sensor. Once the zeroing is
complete you have the option of continuing with a full
span gas calibration.
Z
ERO
S
ENSORS
O
N
S
TARTUP
The “Zero Sensors On Startup” mode allows you to
choose whether your iTX will automatically reset your
toxic and exposive gas sensors to “0.0” and your oxygen
reading to “20.9”. This setting should never be used if you
normally power up your iTX in a contaminated
environment.
A
LLOW
S
ENSOR
Z
EROING IN THE
F
IELD
The “Allow Sensor Zeroing in the Field” mode allows you
to determine whether your iTX should be able to be
zeroed in the field. By selecting “NO” the unit will not be
able to be zeroed unless the function is accessed during
configuration. If “YES” is selected, this mode can be
entered from the “Gas Reading Mode” by pressing the
A
LLOW
C
ALIBRATION
I
N
F
IELD
The “Allow Calibration In Field” mode allows you to
determine whether your iTX should be able to be span
calibrated in the field. By selecting “NO” the unit will not
be able to be span calibrated unless the function is
accessed during configuration. If “YES” is selected, this
mode can be entered from the “Gas Reading Mode” by
pressing the
N
UMERIC
D
ISPLAY
The “Numeric Display” mode allows you to choose whether
your iTX will display actual gas concentrations or relate the
condition of the ambient air through text messages. Text
readings show “OK” in non-alarm conditions and “ALARM”
when an unsafe gas condition is detected. During an alarm
condition, the gas/sensor that is in alarm will flash.
P
EAKS
The “Peaks” mode allows you to view or clear the highest
concentration of explosive and toxic gas or the lowest
concentration of oxygen since the peak readings were last
cleared. Pressing in this mode will clear all peak
readings.
A
LLOW
V
IEWING
P
EAKS
R
EADING
I
N
F
IELD
The “Allow Viewing Peaks Reading In Field” mode lets
you decide whether peak readings will be accessed in the
field. Choosing “Yes” will display the peaks while
choosing “No” blocks them from the Gas Reading Mode
and can only be accessed during configuration.
A
LLOW
V
IEWING
STEL/TWA R
EADING
I
N
F
IELD
The “Allow Viewing STEL/TWA Reading In Field” mode
lets you decide whether STEL and TWA average gas
readings will be accessed in the field. Choosing “Yes”
will display these average values while choosing “No”
blocks them from the Gas Reading Mode.
TWA
The “TWA” mode allows you to set the time duration used
to calculate the Time Weighted Average gas reading.
Normally this value is 8 hours, representing a normal
work shift but it is adjustable from 1 to 40 hours. Press
allows you to change the time duration. Once is
pressed, the value can be adjusted by using the two hidden
up/down arrow keys.
Quick
Calibration
Yes
E to Change
Zero Sensors
E to Zero
Zero Sensors
On Startup
No
E to Change
Allow Sensor
Zeroing
in Field
No
E to Change
Allow
Calibration
in Field
Yes
E to Change
Numeric
Display
E to Change
Allow Viewing
STEL/TWA Reading
in Field
Yes
E to Change
Allow Viewing
Peaks Reading
in Field
Yes
E to Change
TWA
40 Hrs
E to Change
CO
SO2
H2S
38
10.6
13
PEAKS
E to Clear
O2
CL2
LEL
18.6
1.6
8
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