Emerson 644 Spécifications Page 35

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Reference Manual
00809-0200-4728, Rev RA
Section 2: Configuration
April 2015
Configuration
Sensor drift alert configuration with AMS Device Manager
1. Right click on the device and select Configure.
2. On the Diagnostics Tab find the Sensor Drift Alert group box.
3. Select to Enable the Mode and fill in the Units, Threshold and Damping values from
the drop downs provided or select the Configure Sensor Drift Alert button and walk
through the guided steps.
4. Select Apply when complete.
Sensor drift alert configuration with LOI
To configure sensor drift alert on the LOI, enable the mode, then set the PV, drift limit, and value
for drift alert damping all separately. Reference Figure 2-12 below for where to find these in the
menu.
Figure 2-12. Configuring Sensor Drift Alert with LOI
* Available only if option code (S) or (D) is ordered.
** Available only if option codes (S) and (DC) are both ordered, or if option codes (D) and (DC) are both ordered.
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 Re-range the transmitter
Re-ranging 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.
CALIBRAT
DAMPING
VARIABLE MAP
TAG
ALM SAT VALUES
PASSWORD
SIMULATE
HART REV
HOT BACK CONFIG**
DRIFT ALERT**
DRIFT ALERT**
....
DRIFT MODE
DRIFT LIMIT
DRIFT UNITS
DRIFT DAMP
BACK TO MENU
EXIT MENU
VIEW CONFIG
SENSOR CONFIG
UNITS
RERANGE
LOOP TEST
DISPLAY
EXTENDED MENU
EXTENDED MENU
EXIT MENU
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