RKI Instruments FP-40 - Manual (Page 9)

8
Preliminary sample drawing method
With detection TAB removed, press START switch.
Preliminary sample drawing is made for about 5 sec to flush out the previous sample, and the following
message is displayed until completion.
Previous sample drawing
1.8 Purge Cycle
When sample-drawing an adsorptive gas continuously, there is the possibility the gas will be adsorbed
onto the inside of the tubing, especially if a high concentration of gas is encountered. If a high
concentration of gas is encountered, the system must be purged in known fresh air before taking a
reading. After purge, the gas detection cycle will start automatically.
Purging method
Mount the detection TAB, select the purge cycle by using UP and DOWN keys. A used TAB may be
used for the purge cycle.
PURGE S T A R T
PURGE P U S H
When START switch is pressed, the purging starts. for 10 minutes
PURGE 600
Count down 600 sec.
When 10 min (600 sec.) passes, the purge cycle is finished and the unit is ready to start the next gas
detection cycle.
REMOVE TAB
1.9 Completion of Detection
HOW TO TURN INSTRUMENT POWER OFF
To turn instrument off, press and hold ON/OFF switch for about 3 sec.
When pressing ON/OFF switch, the buzzer sounds about 9 times.
Also, if 5 minutes passes without any button being pressed, or when 5 minutes has elapsed since the last
operation, the power will shut off automatically.
Preliminary sample drawing must be done in fresh air , or in the air of the room
you will check next.