Orion-instruments Jupiter 2xx FOUNDATION Fieldbus Manuel d'utilisateur télécharger pdf (Page 17)

57-649 Jupiter Magnetostrictive Transmitter - FOUNDATION fieldbus™

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

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 31 32

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Orion-instruments Jupiter 2xx FOUNDATION Fieldbus Manuel d'utilisateur Page 17

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