Model 8712C/U/H Magnetic Flowmeter Transmitters
4-6
BASIC SETUP
Tag
Tag is the quickest and shortest way of identifying and distinguishing
between transmitters. Transmitters can be tagged according to the
requirements of your application. The tag may be up to eight
characters long.
Flow Rate Units
The flow rate units variable specifies the format in which the flow rate
will be displayed. Units should be selected to meet your particular
metering needs.
Options for Flow Rate Units
•Gal/Min
• Liters/Min
•ImpGal/Min
• CuMeter/Hr
•Ft/Sec
• Meters/Sec
• Special (user defined, see page 4-11).
The maximum flow rate information is not updated as the available
units appear, but only after the data are entered. The maximum flow
rate on the second line of the display is for informational purposes, and
cannot be changed directly by the user.
If the transmitter is totalizing, the numerator of the unit of measure is
used by the transmitter as the volumetric unit for totalization and
pulse output scaling. For example, if gal/min is selected, the Model
8712C/U/H totalizes and provides a pulse output in gallons.
URV (Upper Range Value)
The upper range value (URV), or analog output range, is preset to 30
ft/s at the factory. The units that appear will be the same as those
selected under the units parameter.
The URV (20 mA point) can be set for any forward or reverse flow rate.
Flow in the forward direction is represented by positive values and flow
in the reverse direction is represented by negative values. The URV can
be any value from –30 ft/s to +30 ft/s, as long as it is at least 1 ft/s from
the lower range value (4 mA point). (See page 4-7.) The URV can also be
set to a value less than the lower range value, which would cause the
transmitter analog output to operate in reverse, with the electrical
current increasing for lower (or more negative) flow rates.
HART Fast Keys 1, 3, 1
LOI Key XMTR INFO
HART Fast Keys 1, 3, 2, 1
LOI Key Units
HART Fast Keys 1, 3, 3
LOI Key Analog Output
Range
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