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Reference Manual

00809-0100-4803, Rev DA

Section 4: Operation and Maintenance

April 2013

Operation and Maintenance

Note

Select process variable calibration input values so that low and high values are equal to or

outside the upper and lower range limits. Do not attempt to obtain reverse output by reversing

the high and low points. The transmitter allows approximately five percent URL deviation from

the characterized curve established at the factory.

Calibration type

The calibration type drop-down menu allows the user to note the type of device last used to

calibrate the sensor (either Differential, Gage, or Absolute). This field does not affect the

calibration of the device.

Recall factory trim

The Recall Factory Trim button will restore the transmitter to the original factory characteriza-

tion curve. The Recall Factory Trim button can be useful for recovering from an inadvertent zero

trim or inaccurate pressure source.

When the recall factory trim function is used, the transmitter’s upper and lower trim values are

set to the values configured at the factory. If custom trim values were specified when the

transmitter was ordered, the device will recall those values. If custom trim values were not

specified, the device will recall the upper and lower sensor limits.

Last DP sensor trim point

The current upper and lower trim points can be seen under the Last DP Sensor Trim Point heading.

4.3.4 Static pressure sensor calibration

The Static Pressure Calibration Tab allows the user to complete either a zero trim procedure or a

full SP sensor trim, see Figure 4-3.

Mass and Energy Flow Fast Keys 1, 2, 5, 4

Direct Process Var. Output Fast Keys 1, 2, 4, 4

1 2 ... 99 100 101 102 103 104 105 106 107 108 109 ... 187 188

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Emerson 3051S Especificaciones Pagina 104