17
3. Operation
Functions and Settings
The MENU screen allows the user to set or activate functions.
To access the MENU screen, press the MENU button.
Menu screen
Item
Function and setting details
Reference
Alarm Test
Operation test for alarm light and audio alarm.
Additionally, the alarm volume can be adjusted.
Page 18
Data logging
Logging of detection data (date and time, gas concentration
and temperature) at a preset interval.
This mode allows the following operations.
Start data logging
Stop data logging
Clear log data
Change logging interval
Pages 19-23
Settings
Alarm set values
(*)
Set the alarm set values of the target
gases.
Page 24
Clock setting
Set the time and date.
Page 25
O2 mode setting
(*)
Select the mode for oxygen gas alarm
and peak hold.
Page 26
Span adjustment
(*)
Incorrect span adjustment will make
accurate gas detection impossible,
leading to a dangerous situation.
Span adjustment must be performed
by an authorized safety manager only.
Request us for span adjustment.
N/A
Volume/Mute
Adjust the alarm volume and operation
tone. Set the mute mode to on/off.
Pages 27-28
LCD contrast
Adjust the display contrast.
Page 29
Display
Switch the language (English or
Japanese). Select the gas
concentrations display format. Set the
backlight timeout.
Page 30
Safety lock
Lock the three items marked with (*) to
prevent changes from unauthorized
access personnel. Must be unlocked
to make changes on them. Locked by
default.
Pages 31-33
16
3. Operation
Peak Hold
Once the peak hold function is activated, the new peak value will be updated and maintained on
the LCD even if the actual gas concentration falls below that value. For combustible gas (COMB),
hydrogen sulfide (H2S) and carbon monoxide (CO), the highest marked concentration will be
maintained as its peak value. For oxygen (O2), the lowest marked concentration will be
maintained as its peak value by default.
Activate
peak
hold
Press the PEAK button
for more than 3
seconds.
Flashing "PEAK” icon will replace the date at the
bottom left of the LCD. The peak values will be
displayed.
Gas concentrations screen
Deactivate peak
hold
Press the PEAK button
for more than 2
seconds.
Returns to the normal gas concentrations screen and
the peak values will be cleared.
Automatic Backlight and Backlight Timeout
・
Automatic backlight
The LCD backlight is turned on/off depending on ambient light.
・
Backlight timeout
The LCD backlight will automatically turn off when it times out or in bright light. Refer to page 30
for the backlight timeout setting procedure.
Settable time
Description
[―――] minutes
Backlight remains on until in bright light.
0 to 10 min. 5-min.increments
(e.g. 5 min. 10 min.)
Backlight will turn off when the preset time
(minutes) passes.
10 to 60 min. 10-min.increments
(e.g. 20 min. 30 min. ….60 min.)
60 to 600 min. 30-min.increments
(e.g. 90 min. 120 min…..600 min)
The peak hold function will be canceled each time the unit is turned off.
NOTE
The LCD backlight is lit while connected with an optional AC adaptor.
NOTE