14
Settings-mode Access
To access settings mode, power on the instrument and during startup:
1.
Press and hold both buttons ( and ) at the same time.
2.
If the unit is security-code protected, you will be prompted to edit ( ) the value to match the three-digit
code; then, press .
Settings-mode UI
The settings-mode screenshot shown below displays the tool symbol ( ), which indicates the instrument is
in settings mode. The remaining UI elements indicate a
high alarm
is set to occur when the
H
2
S
gas
reading reaches
20.0 ppm
or higher.
Figure 4.1 Settings display-screen sample
Settings mode ( ): High alarm setting for H
2
S
Symbol location
You will encounter each setting in the order shown
. To scroll the menu, repeatedly press the
power button ( ). When you want to change a setting, use the buttons as follows:
Press until the desired setting option displays.
Press to save the setting.
IMPORTANT:
When you set something to “disabled”, it will
not
be operational.
If more than 30 seconds pass after a button is pressed, settings mode is exited. If this occurs, simply power
off the instrument; then, power on and access settings during startup.
Figure 4.2 Settings menu
Display screen
Setting and options
Initiate zero
Optionally zero the sensors ( ).
Low-alarm gas setting (H
2
S shown)
Choose ( ) the minimum gas-reading concentration that will cause a
low alarm for the displayed gas type (H2S shown here). Save ( ) the
setting. You will be prompted to repeat the same setting sequence but
for the other installed gas sensor.
Value parameters:
•
within the sensor’s measurement range
•
higher
than the sensor’s
gas-alert
setting
•
lower than the sensors
high-alarm
gas setting
Summary of Contents for TANGO TX2
Page 6: ......
Page 16: ......
Page 38: ...32 Illustration 7 1 Disassembled Tango TX2 and case top assembly Instrument Case top assembly...
