
FP-4400 PORTABLE CLAMP-ON ULTRASONIC FLOW METER
ONICON Incorporated 727.447.6140
Page 20 onicon.com
4.2 POWER ON/OFF & CHARGING
Press and hold the POWER button for 3-5 seconds to turn the meter on or off. When powering on, the meter will display a
boot-up screen with the ONICON logo:
98%
0.00
USG/m
0 USG
Total
Release
Hold
OFF
STANDBY
POWER MODE
When powering off, the meter will display a pop-up message that continuing to hold the POWER button will completely
shut off the meter, while releasing the POWER button will put the meter into stand-by mode:
Standby mode puts the meter in a low power state while keeping the processor awake. Future versions of the operating
system will allow for periodic data logging while in standby. The periodic logging function is not active in this meter.
For best results, charging should be done with the meter ON. This allows the regulation circuitry to charge at the optimum
rate, ensuring a fast and efficient charge, and maximizing battery life. The meter will automatically slow the charging rate
when maximum charge is approached. Once the battery charge drains slightly, to 98% with the charger still connected, the
meter will automatically turn on the charger current again to return to 100%.
Third-party USB-C charging devices or battery banks are acceptable to use. Charge speed may be slower than the included
charger if the output is not capable of delivering 2 Amps at 5 Volts (10 Watts).
Caution
Leaving the meter in Standby will slowly drain the battery. Do not leave the meter in standby for prolonged periods
of time.