Specifications

SF
6
Portable Monitor
Instruction 3015-5150 15
3.9.2 Filling the Purge-Air Bag
CAUTION: Fill the purge-air bag in a clean, fresh-air environment that is at the same temperature
and humidity as the area being checked for gas. DO NOT fill the bag in an area that is
contaminated with SF
6
gas.
The following message is displayed and an audible alarm is sounded when the monitor’s purge-air bag is
empty. This message appears immediately after warm-up, and approximately every 40 minutes during
normal operation. Press the ENTER button to start the refill process.
After the air bag has been filled, the monitor starts or resumes normal operation by displaying the
Data Display screen.
3.9.3 Data Display Screen
During normal operation the Data Display screen shows when the monitor is performing the following
two functions:
MEASURE indicates that the monitor is actively measuring gas. In the screen shown above the monitor is
currently detecting 100 ppm of SF
6
gas. The 2ndUNIT value (Blank, Peak PPM, Continuous TWA, or 8 Hr
TWA) is user-selected (refer to 2ndUNIT function on page 17). The measurement cycle runs for 4 minutes.
PURGE is displayed when the monitor is resetting its infrared detector to a baseline of 0 ppm using the
fresh air in the monitor’s internal purge-air bag. The purge cycle runs for 10 seconds.
3.9.4 Function Screens
The Function screens are used to set up the monitor and display stored data.
From the Data Display screen, press both the Keypad Left and Right buttons at the same time to
display the first Function Menu screen. Next, use the Keypad buttons to move the arrow (>) until it
points to the desired function, and then press the ENTER button to select that function.
Once a function has been selected, use the Keypad to scroll through the displayed data or to change a
parameter associated with that function. Press ENTER to save any newly entered parameters. Press the
ESC button to return to the previous screen without saving.
Note that if no buttons are pressed within 90 seconds after selecting a function, the unit returns to the
Data Display screen.
FILLBAG – Press ENTER to manually fill the purge-air bag.
WARNING: Fill the purge-air bag in a clean, fresh-air environment
that is at the same temperature and humidity as the area being
checked for gas. DO NOT fill the bag in an area that is
contaminated with SF
6
gas.
MEASURE 2ndUNIT
100ppm SF6
PURGE 2ndUNIT
100ppm SF6
PURGE AIR EMPTY
<ENTER> TO FILL
RECHARGING PURGE
AIR...
>FILLBAG EMTYBAG
ALRMLVL AUDALRM
>PPM LOG LOG INT
FAULTS DIAG
>SILENCE P-
CHK
GAS CLOCK
FILLING BAG...
>2ndUNIT PRINT
PLOT PC-DUMP