Tokyo Keiki UFL-30, Installation & Operation Manual

Page: 120 / 166

III-11
Function
(cont.)
Data retention Totalized flow values and all setting parameters are retained in
memory with lithium battery even if power failure.
Note:
1) Setting Parameters are retained in nonvolatile memory.
2) Totalized flow value and ROFF/Disturbance detection history are retained
in memory which hold by Back-up Battery.
3) Data retained in memory which hold by Back-up Battery clears if battery
removed without power supply.
4) 5 year life at room temperature.
5) No battery recharging function.
Analog output
check
Output can be freely changed depending on analog output setting.
Setting every 0.1% of flow span range (-120.0 to + 120.0)
possible.
Path fixing Measurement of specified path can be fixed and flow checked for
every path when using multi-paths.
Automatic Gain
adjustment
(AGA Function)
Receiver gain can be set as ideal amplitude by automatically or
manually.
(Manual gain setting is done conventionally by monitoring
receiving echo with oscilloscope)
Analog output
range
switching
Analog output range is automatically changeable when double
range mode.
Automatic gain
control
(AGC Function)
Receiver gain is automatically adjusted to the optimum level in
response to changes in receiver sensitivity during measurement.
Note: Not available in case of containing air bubble or nearby flow control
valve.
Forward /
Backward flow
change
processing
Hysteresis can be set by time in order to avoid flapping of
direction detection contact points when there are back and forth,
plus and minus changes in measurement values during still water
condition.
Totalized value
preset
Totalized values can be freely preset.
Preset Range: 0 to 9999999
Basic data
display
Following internal data can be referenced.
- Fluid sonic velocity (unit, m/s)
- Reynolds Number
- Amp. Gain
Error historic
counter
Count "No Echo receiving warning" & "Disturbance detection"
when it occurred.