Rosemount 8732C - Analog Output Configuration

Rosemount Model 8732C Integral Mount Magnetic Flowmeter System
4-6
ANALOG OUTPUT
CONFIGURATION
The standard 4–20 mA analog output can be configured to meet the
special requirements of your application. In the standard configuration,
a 4 mA output (LRV) corresponds to 0.0 ft/s in the line, while a 20 mA
output (URV) corresponds to a maximum flow of 30 ft/s. The 4 and 20
mA output points can be changed to any value between –30 ft/s and 30
ft/s. The minimum allowable range between them is 1 ft/s.
Upper Range Value (URV) Reset the Upper Range Value (URV) to change the size of the range
(or span) between the URV and LRV. Under normal circumstances, the
URV should be set to a value near the maximum expected flow rate and
must be between –30 ft/s to 30 ft/s.
NOTE
The minimum span between the analog output range (URV) and analog
output zero (LRV) is 1 ft/s.
Lower Range Value (LRV) Reset the Lower Range Value (LRV) to change the size of the range
(or span) between the URV and LRV. Under normal circumstances, the
LRV should be set to a value near the minimum expected flow rate to
maximize resolution. LRV must be between –30 ft/s to 30 ft/s.
NOTE
The LRV can be set to a value greater than the URV, which will cause
the analog output to operate in reverse. In this mode, the analog output
will increase with lower (more negative) flow rates.
Example
If the URV is greater than the LRV, the analog output becomes 3.9 mA
when the flow rate falls below the selected 4 mA point.
If the URV is less than the LRV, the analog output becomes 3.9 mA
when the flow rate rises above the selected 4 mA point.
The minimum allowable span between the URV and LRV is 1 ft/s. Do
not set the LRV within 1 ft/s of the 20 mA point. For example, if the
URV is set to 15.67 ft/s and if the desired URV is greater than the LRV,
then the highest allowable LRV would be 14.67 ft/s. If the desired URV
is less than the LRV, then the lowest allowable analog zero setting
would be 16.67 ft/s.
HART Fast Keys
1, 3, 3
LOI
Basic Setup
HART Fast Keys
1, 3, 4
LOI
Basic Setup