Rosemount 8800D Series User Manual

Reference Manual
00809-0100-4003, Rev BA
August 2010
Rosemount 8800D
C-2
ELECTRONICS
VERIFICATION
Electronics functionality can be verified via two different verification methods:
• Flow Simulation Mode
• Using an External Frequency Generator
Both methods require the use of a Field Communicator or AMS. It is not
required to disconnect the sensor to perform the electronics verification since
the transmitter is capable of disconnecting the sensor signal at the input to the
electronics. Should the user choose to physically disconnect the sensor from
the electronics, refer to Replacing the Electronics Housing on page 5-12.
Electronics Verification
Using Flow
Simulation Mode
Electronics verification can be done by utilizing the internal flow simulation
functionality. The Rosemount 8800D is capable of simulating either a fixed
flow rate or a varying flow rate. The amplitude of the simulated flow signal is
based on the minimum required process density for the given line size and
service type. Either type of simulation (fixed or varying) will effectively
disconnect the Rosemount 8800D sensor from the electronics charge
amplifier input (see Figure 5-2 on page 5-5) and replace it with the simulated
flow signal.
Fixed Flow
Rate Simulation
The fixed flow simulation signal can be entered in either percent of range or
flow rate in the current engineering units. The resulting flow rate and/or
shedding frequency can be continuously monitored via a Field Communicator
or AMS.
Varying Flow
Rate Simulation
The profile of the varying flow simulation signal is a repetitive triangular
waveform as illustrated in Figure C-1. The minimum and maximum flowrate
can be entered in either percent of range or entered as a flow rate in the
current engineering units. The ramp time can be entered in seconds from a
minimum of 0.6 seconds to a maximum of 34951 seconds. The resulting flow
rate and/or shedding frequency can be continuously monitored via a Field
Communicator or AMS.
NOTE
To manually disconnect the sensor for precautionary measures, see
Replacing the Electronics Housing on page 5-12 for details.
Field Comm.
1, 2, 4, 3, 1
Field Comm.
1, 2, 4, 3, 1, 1
Field Comm.
1, 2, 4, 3, 1, 2

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