Rosemount 4600, Справочное руководство

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Reference Manual
00809-0100-4022, Rev AA
July 2002
3-7
Model 4600
BASIC SETUP
Set Process Variable
Units
The PV Unit command sets the process variable units to allow you to monitor
your process using the appropriate units of measure.
HART Communicator
Enter the fast key sequence shown. Select from the following engineering
units:
AMS
Right click on the device and select “Configuration Properties” from the menu.
In the Basic Setup tab, use “Unit” drop down menu to select units.
Rerange
The Range Values command sets the 4 and 20 mA points and digital lower
(LRV) and upper (URV) range values. In practice, you may reset the
transmitter range values as often as necessary to reflect changing process
conditions. Changing the lower or upper range point results in similar changes
to the span.
NOTE
Transmitters are shipped from Rosemount Inc. fully calibrated per request or
by the factory default of full scale (span = upper range limit.)
Use one of the methods below to rerange the transmitter. Each method is
unique; examine all options closely before deciding which method works best
for your process.
• Rerange with a HART Communicator only.
• Rerange with a pressure input source and a HART Communicator.
• Rerange with a pressure input source and the local zero and span
targets (option D1).
• Rerange with AMS only.
• Rerange with a pressure input source and AMS.
Fast Keys
1, 3, 2
• inH
2
O • bar • torr
• inHg • mbar • atm
• ftH
2
O • g/cm
2
• MPa
• mmH
2
O • kg/cm
2
• inH
2
O at 4 °C
• mmHg • Pa • mmH
2
O at 4 °C
• psi • kPa