Orion Instruments Jupiter 2xx FOUNDATION Fieldbus - Manual (Page 17)

57-649 Jupiter Magnetostrictive Transmitter - F OUNDATION fieldbus™ 17
3.3.3 Jupiter Configuration Parameters
This set of parameters within the Transducer Block is
important and required to configure every Jupiter transmitter.
MEASUREMENT_TYPE Select from LEVEL_ONLY or
LEVEL&INTERFACE.
PROBE_LENGTH Enter the exact length of probe. The
probe length is shown as the last 3 digits of the probe model
number printed on the nameplate attached to the transmitter.
LEVEL_OFFSET Enter the distance from the probe tip to
the desired 0% reference in PROBE_LEVEL_UNITs. The
acceptable range is from -99 to 150 inches.
SENSOR_MOUNT Select from MLI_TOP,
MLI_BOTTOM, DIRECT_NEAR or
DIRECT_EXTENDED.
3.4 User Calibration Parameters
One of the main advantages of the Enhanced Jupiter Model
2XX is that every Enhanced Jupiter Model 2XX transmitter
is shipped from the factory precisely calibrated.
On the other hand, part of the advantage of FOUNDATION
fieldbus is to provide the ability to monitor changes and
adjustments to a transmitter. The Fieldbus concept allows a
user to make calibration adjustments if deemed necessary.
NOTE: The original factory calibration settings are restored when a new
probe length value is assigned.
It is highly recommended that factory calibration be
used for optimum performance.
3.4.1 Factory Parameters
The factory-adjustable calibrated parameters are:
CONVERSION_FACTOR, SCALE_OFFSET,
FLOAT_THRESHOLD and FLOAT_POLARITY.
The following parameters are used for either troubleshooting
or are parameters adjusted at the factory. They should never
be changed in the field.
CONVERSION_FACTOR: compensates for changes in
signal propagation.
SCALE_OFFSET: the intercept of the calibration line.
FLOAT_THRESHOLD: controls the threshold voltage level.
FLOAT_POLARITY: defines level as positive or negative
pulse.
SENSITIVITY: signal detector adjustment.
DRIVE_AMPLITUDE: sets amplitude of the out going pulse.
Level Offset
Probe Length
Sensor Mount
0% Set Point
100% Set Point