Rosemount 8800D Series User Manual

Reference Manual
00809-0100-4004, Rev BA
August 2010
Rosemount 8800D
2-16
NOTE
A power disconnect is required to remove power from the transmitter for
maintenance, removal, and replacement.
Power Supply
The dc power supply should provide power with less than two percent ripple.
The total resistance load is the sum of the resistance of the signal wiring and
the load resistance of the controller, indicator, and related pieces. Note that
the resistance of intrinsic safety barriers, if used, must be included.
NOTE
A minimum loop resistance of 250 ohms is required to exchange information
with a HART-based communicator. With 250 ohms of loop resistance, the
flowmeter will require a minimum power supply voltage (V
ps
) of 16.8 volts to
output 24 mA.
NOTE
If a Smart Wireless THUM
™
Adapter is being used with the Rosemount
8800D flowmeter to exchange information via IEC 62591 (WirelessHART
Protocol) technology a minimum loop resistance of 250 ohms is required. In
addition, a minimum power supply voltage (V
ps
) of 19.3 volts will be required
to output 24 mA.
NOTE
If a single power supply is used to power more than one Rosemount 8800D
flowmeter, the power supply used and circuitry common to the flowmeters
should not have more than 20 ohms of impedance at 1200 Hz.

Rosemount 8800D Series Specifications

General

Type	Vortex Flow Meter
Measurement Principle	Vortex Shedding
Operating Temperature	-40 to 185°F (-40 to 85°C)
Storage Temperature	-40 to 185°F (-40 to 85°C)
Communication Protocols	FOUNDATION Fieldbus
Material	316 stainless steel
Fluid Type	Liquid, Gas, Steam
Line Size	1/2 to 8 inches (15 to 200 mm)
Approvals	ATEX, IECEx, CSA, FM
Output Signal	4-20 mA
Process Connection	Flanged, Wafer, Threaded
Electrical Connection	M20
Protection Rating	IP66
Mounting Style	Wafer, Flanged