Dynasonics 902_903 Series Portable Doppler Ultrasonic Flow Meter - Manual (Page 3)

Rev. 10/08
- 1 - D902/3
BEFORE OPERATING THE D902/3
The D902/3 flow meter is equipped with a Lead Acid Gel
Cell battery. This battery will require charging before initial
operation.
Apply AC power, utilizing the enclosed line power cord, to
the D902/3 for a period of 16-24 hours prior to using the
product for the first time. The line cord connects to the
socket connection located on the side of the enclosure.
Do not allow the battery to completely discharge.
(Discharging the battery to the point where the LOW
BATTERY indicator illuminates will not damage the
battery. Allowing the battery to stay discharged for long
periods of time can degrade the storage capacity of the
battery.) When not in use, continually charge the battery
by keeping it plugged into line power. The D902/3 has an
integral charging circuit that prevents overcharging. The
instrument can be permanently connected to AC line power
without damaging the flow meter or the battery.
Important Notice!