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SFIDK.PS.029.Q3.02
Service
9. Service
SITRANS F US SONOFLO
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Signal information
In the SIGNAL INFORMATION menu it is possible to read information regarding the ultrasonic
signals, the flow signals and the transducers.
9.2 Signal
In the SIGNAL MENU, information relating to amplification of the signal, signal amplitude and signal
to noise ratio is given as GAIN, SIGNAL LEVEL and S/N RATIO. GAIN can be between 1 to 60 and
depending on sensor type and size, the typical value for water will be between 5 and 30. The
SIGNAL LEVEL will be between 375 and 800 mV. A value less than 700 mV indicates variation in
the signal amplitude caused by variation in the acoustic damping, e.g. air bubbles. The S/N RATIO
will be a number between 1 and 40. A typical value for water is between 20 and 35.
9.
Service
9.1 Service menu
The SERVICE MENU contains three sub menues. INFORMATION, FORCE OUTPUT and SIGNAL
INFORMATION. INFORMATION contains all identification data of the signal converter and sensor.
Note that the meter continues to measure and up-dates the output(s) being in the service menu.
The only exception is when an output is set in the FORCE OUTPUT MENU.
Force output
In FORCE OUTPUT it is possible to set all outputs to fixed values. The current output can be set
between 0/4-24 mA, the frequency/pulse output can be set to 1 Hz and the relay output can be set
on or off.
SERVICE
MODE
VOLUME
FLOW %
FORCED
OUTPUT
SIGNAL
INFORMATION
INFORMATION
FORCE
OUTPUT
LOW FLOW
CUT-OFF
CURRENT 1
FORCE %
CURRENT 1
NORMAL
FORCED
CURRENT 2
FORCE %
CURRENT 2
NORMAL
FORCED
CURRENT 3
FORCE %
CURRENT 3
NORMAL
FORCED
FREQUENCY 1
NORMAL / 1 Hz
FREQUENCY 2
NORMAL / 1 Hz
RELAY 1
NORMAL
FORCED
RELAY 1
ON/OFF
RELAY 2
NORMAL
FORCED
RELAY 2
ON/OFF
MAX.
MAX.
MAX.
MAX.