Toshiba LF434 - Manual (Page 39)

TOSHIBA
6 F 8 A 0 7 7 0
7 J Basic operations
Flow mea^surcjncni in Ihe measurement mode, checking or changing configuration
parameters in ihe setting mode and a converter unit check in the calibration mode are
the basic operations of the LF404 converter*
7*3*1 Müde Change
The 1.F4(I4 converter has three operation modes: measurement* setting and calibration.
The system slays in the measurement mode after the power is turned on* To change (he
mode to the setting or calibration mode, press [SRT] and select the desired item using
[ ► ] and [ A ] keys. To return to the measurement mode, select “0" {MEASURE
MODE) for the number column of configuration items (such as AU or B[)). See 7.4*
“Configuration Items Selection Table,"
■ Measurement mode
: measures ttic process flow and displays and outputs the measured process values. The
flowmeter can measure the flow velocity, flow rates* or totalized flow. I’he flowmeter
first goes into this mode when power is turned on.
Setting mode
: used to check or change various configuration parameters used in the measurement
mode. These parameter values are displayed while checking or changing ihe.se values
but the flowmeter outputs the Tieasured process values as in the measurement mode.
See 7,4, “Configuration Items Selection Table" and 8.2, “Checking or Changing
Parameters" for details. Configuration items are from Al, A2, A3 to Ml.
Calibrtttion mode
: used to check the converter iniernal circuits. The internally generated simulation signal
is used to check the measuring span and excitation current value. The current output of
the flowmeter changes in acoŒtlance with the simulation signal. The stains of each
digital output is held to the value just before the system moved into the calibration
mode. Sec 7.4, “Configuration Items Selection t able" and Chapter 9, “Calibration" for
details. Configuration items are from N1 to N4,
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