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25
Reference Manual
00809-0100-4728, Rev MB
Configuration
July 2016
Configuration
Note
Enabling the Drift Alert Option to WARNING will set a flag (through the HART communications)
whenever the maximum acceptable difference between Sensor 1 and Sensor 2 has been exceeded. For
the transmitter’s analog signal to go into ALARM when Drift Alert is detected, select Alarm during the
configuration process.
2.8
Configure device outputs
2.8.1
Rerange the transmitter
Reranging the transmitter sets the measurement range to the limits of the expected readings for a
certain application. Setting the measurement range to the limits of expected readings maximizes
transmitter performance; the transmitter is most accurate when operated within the expected
temperature range for the application.
The range of expected readings is defined by the Lower Range Value (LRV) and Upper Range Value (URV).
The transmitter range values can be reset as often as necessary to reflect changing process conditions.
For a complete listing of Range & Sensor limits, refer to
Table A-2 on page 110
.
Note
The rerange functions should not be confused with the trim functions. Although the rerange function
matches a sensor input to a 4–20 mA output, as in conventional calibration, it does not affect the
transmitter’s interpretation of the input.
Select from one of the methods below to rerange the transmitter.
Using a Field Communicator
Using AMS Device Manager
Right click on the device and select
Configure
.
1. In the left navigation pane choose
Manual Setup
.
2. On the
Analog Output Tab
find the Primary Variable Configuration group box.
3. Change the
Upper Range Value
and
Lower Range Value
to their desired settings.
4. Click
Apply
when complete.
Using Local Operator Interface
Reference the image below to find the Range Value configuration path on the LOI.
From the
HOME
screen, enter the Fast Key sequence
Lower Range Value
Upper Range Value
Device Dashboard Fast Keys
2, 2, 5, 5, 3
2, 2, 5, 5, 2
Содержание Rosemount 644 HART
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Страница 16: ...6 Reference Manual 00809 0100 4728 Rev MB Introduction July 2016 Introduction ...
Страница 80: ...70 Reference Manual 00809 0100 4728 Rev MB Operation and Maintenance July 2016 Operation and Maintenance ...
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Страница 120: ...Product Certifications July 2016 Reference Manual 00809 0100 4728 Rev MB 110 Product Certifications Sheet 2 of 2 ...
Страница 122: ...Product Certifications July 2016 Reference Manual 00809 0100 4728 Rev MB 112 Product Certifications ...
Страница 138: ...128 Reference Manual 00809 0100 4728 Rev MB Index July 2016 Index ...
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