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APSCAL Absolute Pressure Span Calibration. The Absolute Pressure Span
Calibration value is the 20 milliamp (span) count value from the external
4-20 milliamp ‘absolute pressure’ input channel. This parameter is used
to calibrate the span point of the incoming 4-20 signal from the external
absolute pressure device. To calibrate the span point of the incoming
4-20 signal, press the EDIT key. The screen will display IN20MA. Set the
incoming signal for 20 milliamps (or connect an external 4-20 calibrator
set for 20 milliamps) and press the EDIT key. The MST2000 will measure
the external absolute pressure channel and save the new 20 milliamp
reference to memory.
21000
If an external
absolute pressure
option is
pre-installed and
calibrated at the
factory this will be
custom set for that
unit.
INPUTO Input Offset. The Input Offset parameter allows the user to adjust
(calibrate) the actual pressure (zero) value to the MST2000 displayed
value. The input offset parameter is displayed and stored in memory as
counts. After the EDIT key is pressed, the edit menu displays the real
time pressure input. The user then uses the INC and DEC keys to adjust
the desired offset. The pressure input must be connected to a pressure
source and be at minimum range value (zero reference) during this
adjustment. Use the MODE key to adjust the cursor position (i.e.. x D1, x
D10, x D100, etc.) to change the offset count by different increments. The
available range is –50,000 to 50,000 counts (approximately +/- 20%
adjustment of full scale). The factory default is as set by the factory during
initial system calibration.
This is a factory
default setting
determined during
calibration. It should
be recorded by the
user in the event it
will be necessary to
restore the Input
Offset to the original
value. This setting
is also recorded on a
label located under
the cover of the
MST2000.
INPUTG Input Gain. The Input Gain parameter allows the user to adjust the gain
of the actual pressure (full scale) value to the MST2000 displayed value.
The input gain parameter is displayed and stored in memory as a gain
multiplier. After the EDIT key is pressed, the edit menu displays the real
time pressure input. The user then uses the INC and DEC keys to adjust
the desired gain. The pressure input must be connected to a pressure
source and at maximum range value during this adjustment. Use the
MODE key to adjust the cursor position (i.e.., x D1, x D01, x D001 etc.) to
change the gain multiplier by different increments. The available range is
0.8000 to 1.2000 (approximately +/- 20 % adjustment of full scale). The
factory default is as set by the factory during initial system calibration.
This is a factory
default setting
determined during
calibration. It should
be recorded by the
user in the event it
will be necessary to
restore the Input
Gain to the original
value. This setting
is also recorded on a
label located under
the cover of the
MST2000.
OUTPTO Output Offset. The Output Offset parameter allows the user to adjust the
actual 4 milliamp (zero) output value as referenced to the MST2000
displayed zero value. The output offset parameter is displayed and
stored in memory as counts. After the EDIT key is pressed, the edit menu
displays the actual count offset and the microprocessor sets the output to
the 4.000 milliamp value. The user then presses the INC and DEC keys
to adjust the desired milliamp offset. Use the MODE key to adjust the
cursor position (i.e. x D1, x D10, x D100, etc.) to change the offset count
by different increments. The available range is –1,000 to 10,000 counts
(approximately 3.9 to 6.5 milliamp adjustment range). The factory default
is as set by the factory during initial system calibration.
This is a factory
default setting
determined during
calibration. It should
be recorded by the
user in the event it
will be necessary to
restore the Output
Offset to the original
value. This setting is
also recorded on a
label located under
the cover of the
MST2000.
PROGRAM PARAMETERS OPERATION MANUAL
Page 16 MST2000 Multivariable SMARTFLOW
®
Transmitter Brandt Instruments, Inc.