Dynasonics 902_903 Series Portable Doppler Ultrasonic Flow Meter - Manual (Page 23)

Rev. 10/08
- 21 - D902/3
After a successful flow meter installation and startup
(covered in the previous sections of this manual) the
D902/3 can be keypad configured to provide select
engineering unit readings of flow and a scaled 4-20 mA
output. Configuration inputs are made via the keypad and
are stored by the microprocessor. The entries are retained
by the flow meter’s backup battery in the event of power
failure. If fluid velocity readings in FPS or MPS are the
only required measurement, keypad configuration is not
required.
The RUN/ENT key toggles the flow meter between the two
modes of operation.
RUN Mode: This is the primary operating mode of the
flow meter. The meter is in RUN mode when the readout
is displaying flow as velocity (FPS, MPS) or volume (GPM,
LPM, LPS). In RUN mode the outputs are active and
transmitting signals proportional to flow rate.
ENTRY Mode: This mode is used to view or change the
configuration of the flow meter. When the D902/3 ships
from the Dynasonics factory, it contains the following
Default configuration:
Each of these parameters may be viewed and/or modified
in the ENTRY Mode. Changes are processed when the
RUN/ENT is pressed and the meter returns to RUN
MODE. In ENTRY Mode flow totalization is suspended
and process outputs are frozen at the last value recorded.
PARAMETER U.S. METRIC
ID 1 Inch 25 mm
UNITS 1 (FPS) 1 (MPS)
DAMP 1 Sec 1 Sec
Volume/PLS φ φ
FULL SCALE 20 FPS 6.08 MPS
CAL 100% 100%
PART 3 - STARTUP AND CONFIGURATION
Keypad
Configurations
Modes of Operation
Default Configuration