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Reference Manual
00809-0100-4663, Rev BA
January 2010
4-15
Rosemount 8732
For example, if the number of samples selected is 100, then the response
time of the system is 10 seconds. In some cases this may be unacceptable.
By setting the time limit, you can force the 8732E to clear the value of the
running average and re-establish the output and average at the new flow rate
once the time limit has elapsed. This parameter limits the response time
added to the loop. A suggested time limit value of two seconds is a good
starting point for most applicable process fluids. The selected signal
processing configuration may be turned ON or OFF to suit your needs.
Coil Drive Frequency
Coil drive frequency allows pulse-rate selection of the sensor coils.
5 Hz
The standard coil drive frequency is 5 Hz, which is sufficient for nearly all
applications.
37 Hz
If the process fluid causes a noisy or unstable output, increase the coil drive
frequency to 37 Hz. If the 37 Hz mode is selected, perform the auto zero
function with no flow and a full sensor.
Low Flow Cutoff
Low flow cutoff allows you to specify the flow rate, between 0.01 and 38.37
feet per second, below which the outputs are driven to zero flow. The units
format for low flow cutoff cannot be changed. It is always displayed as feet per
second regardless of the format selected. The low flow cutoff value applies to
both forward and reverse flows.
Primary Variable Damping
0 to 256 Seconds
Primary Variable Damping allows selection of a response time, in seconds, to
a step change in flow rate. It is most often used to smooth fluctuations in
output.
Device Info Information variables are used for identification of flowmeters in the field and
to store information that may be useful in service situations. Information
variables have no effect on flowmeter output or process variables.
Device ID
This function displays the Device ID of the transmitter. This is one piece of
information required to generate a license code to enable diagnostics in the
field.
PV Sensor S/N
The PV sensor serial number is the serial number of the sensor connected to
the transmitter and can be stored in the transmitter configuration for future
reference. The number provides easy identification if the sensor needs
servicing or for other purposes.
375 Transducer Block, Detailed Setup, Signal Processing
375 Transducer Block, Detailed Setup, Signal Processing
375 Transducer Block, Detailed Setup, Signal Processing
375 Transducer Block, Detailed
Setup
375 Transducer Block, Detailed Setup, Device Info
375 Transducer Block, Detailed Setup, Device Info