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SC-04
Chapter 3: Measuring Mode • 19
5. If
Password Protection
is turned
On
(factory setting is
Off
) using the 04 Series Setup
Program, a user-set password is required to perform a demand zero. When the password
screen appears, adjust each digit with the AIR button and press and release the POWER
MODE button to move on to the next digit. Once the password is entered, the instrument
sets the fresh air reading.
Turning Off the SC-04
1. Press and hold POWER MODE.
2. OFF appears on the display and the buzzer pulses for about five seconds (if
KEY.TONE
is set to
ON
in User Mode).
3. Release the button when OFF disappears from the display.
4. If
Password Protection
is turned
On
(factory setting is
Off
) using the 04 Series Setup
Program, a user-set password is required to turn off the SC-04. When the password screen
appears, adjust each digit with the AIR button and press and release the POWER MODE
button to move on to the next digit. Once the password is entered, the instrument shuts off.
Measuring Mode Operation
When the SC-04 completes its startup sequence, it is in Measuring Mode. In Measuring Mode
the SC-04 continuously monitors the sampled atmosphere and displays the gas concentration.
The SC-04 is in Normal Operation if there are no alarm indications.
Heart Symbol: The heart symbol in the top right corner of the LCD indicates the operation
status and flashes when normal. A microprocessor error causes the heart symbol to stop
flashing or to disappear.
Check Mark: If
BP.RMDR
is set to
ON
and if a bump test is not due, a check mark appears in
the lower left corner of the LCD.
“S”: If the instrument is operating in Stealth Mode, an “S.” appears at the bottom of the LCD.
Backlight: In a low-light environment, press and release either button to turn on the display
backlight. See pg.58 to program backlight duration.
Confirmation/Non-Compliance Indicator: If the
BEEP
item in User Mode is set to anything
other than
OFF
, the SC-04 gives periodic indications to confirm that it’s operating or to
indicate a non-compliance (see pg.57).
0000
PASS-W
0000
PASS-W
SO2
0.00
S.
ppm