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Operation: Flow Verification
• Monitor live flow readings. In both Standard Mode and Basic Mode, you
can monitor live readings of flow, pressure and temperature by viewing the
Instant screen. Readings are updated in real time.
• Capture an averaged reading. Select START AVG in either mode to begin a
timed average. The averages update in real-time until the measurement time
is complete. In Standard Mode, you can highlight any parameter in the middle
of the screen, just as you did on the Instant screen.
• Tare your FP-25 before calibrating the next sampler. For best results, get
a fresh tare when you move the FP-25 to a new sampler. Select MENU > TARE.
Operation: Leak Check Pressure Verification
You can monitor the sub-atmospheric pressures inside an air sampler during a
leak check using the FP-25's flow stream pressure sensors.
• Rotate the FP-25 display. Select MENU > BASIC MODE > ROTATE.
• Mount the FP-25 beneath the leak check adapter. If you are already in
Direct Mode, simply replace the PM
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inlet with the leak check adapter.
• Monitor live pressure readings. Line pressure readings are presented in
both absolute (e.g., PSIA) and gauge (e.g., PSIG) pressure units. Readings are
updated in real time when viewing the Instant screen.
Maintenance and Care
• All connections and seals satisfy IP67 requirements for ingress protection,
so your FP-25 will not be damaged if it rains unexpectedly.
• We have designed the FP-25 to withstand drops onto concrete from shed
rooftops. If dropped, your FP-25 will likely retain its calibration, but the best
practice is to verify correct flow readings against a known-good FP-25.
• Calibrate your FP-25 annually. Request an Alicat factory calibration at
or by calling Alicat at 1-888-290-6060.
Quick-Start Guide
