Rosemount Model 8800C Vortex Flowmeter
3-14
PV Units Refer to the previous pages for more details regarding the following:
Volumetric Units, Mass Units, STD/Normal Units, Velocity Units, and
Special Units.
Configure Options The Model 8800C is digitally adjusted at the factory using precision
equipment to ensure accuracy. You should be able to install and operate
the flowmeter without a D/A Trim.
Analog Output
For maximum accuracy, calibrate the analog output and, if necessary,
trim for your system loop. The D/A Trim procedure alters the
conversion of the digital signal into an analog 4–20 mA output.
Range Values
Range Values enables you to maximize resolution of analog output.
The meter is most accurate when operated within the expected flow
ranges for your application. Setting the range to the limits of expected
readings will maximize flowmeter performance.
The range of expected readings is defined by the Lower Range Value
(LRV) and Upper Range Value (URV). Set the LRV and URV within the
limits of flowmeter operation as defined by the line size and process
material for your application. Values set outside that range will not be
accepted. Select each variable and enter the appropriate value. The
new range is defined by these values.
Loop Test
Loop Test verifies the output of the flowmeter, the integrity of the loop,
and the operation of any recorders or similar devices. Conduct the loop
test after the flowmeter is installed in the field. If the meter is located
in a loop with a control system, the loop will have to be set to manual
control before the loop test is performed.
Verify that the ammeter in the test loop reads 4 mA. If the output is
4 mA, end the loop test. If the output is not 4 mA, the flowmeter may
require a digital trim (see D/A Trim (Digital-to-Analog Trim). If the
digital trim does not set the 4 mA output, the receiving meter may be
malfunctioning.
Alarm Jumper
Alarm Jumper lets you verify the alarm jumper setting.
HART Comm. 1, 4, 2
HART Comm. 1, 4, 3
HART Comm. 1, 4, 3, 1
HART Comm. 1, 4, 3, 1, 1
HART Comm. 1, 4, 3, 1, 2
HART Comm. 1, 4, 3, 1, 3
To Next Page
Loading...
Need help?
General
