KROHNE VFM 3100 EN - Manual (Page 61)

61
Straight
1 L paral to shed
1 L perp to shed
2 L cls paral shed
2 L cls perp shed
2 L 5 dia paral
2 L 5 dia perp
Reducer
Configurator
HART Local
Piping
Descripton
STRAIGHT
1 EL PAR
1 EL PER
2L0PDPAR
2L0PDPER
2L5PDPAR
2L5PDPER
REDUCER
50 PD or more of straight pipe up-stream of VFM 3100
Single, long radius, 90˚ elbow; vortex shedder parallel to plane of elbow
Single, long radius, 90˚ elbow; vortex shedder perpendicular plane
of elbow
Two elbows in series and in different planes; vortex shedder parallel
to plane of closest elbow; elbows close coupled, i.e., no separation
Two elbows in series and in different planes; vortex shedder perpendicu-
lar to plane of closest elbow; elbows close coupled, i.e., no separation
Two elbows in series and in different planes; vortex shedder parallel
to plane of closest elbow; elbows have 5 pipe diameter separation
Two elbows in series and in different planes; vortex shedder perpendicu-
lar to plane of closest elbow; elbows have 5 pipe diameter separation
Reducer with either a 3:2 or 4:3 reduction
Default: STRAIGHT (corresponds to zero bias) and 30.0 PD
Custom K-Factor Bias [numeric entry in percent]
This allows entry of a user established bias in percent to correct
the Flowing K-Factor. This bias correction is in addition to those
addressed above, i.e., Mating Pipe and Piping Configuration/
Upstream Distance.
Default: 0.0
Upper Range Value [numeric entry]
This allows the user to set the upper range operating limit of the
VFM 3100. In the case of 4 to 20 mA output, it also establishes the
flow value corresponding to 20 mA; and in the case of scaled pulse
output, the flow value corresponding to 100 Hz.
Default: Upper Range Flow Limit
9.6. Output Options
Damping Value [numeric entry]
This feature allows the flow rate output to be smoothed.
Default: 2 seconds
Scaled Pulse Output [Pick-List: Off, Rate]
The Scaled Pulse Output, a contact closure, provides a frequency
output that is linearly related to the flowrate, the upper range value
being set to 100 Hz. For example, for a flow range to 0 to 500
USgpm, the frequency of the scaled pulse output goes from 0 to
100 Hz.
Default: Off
AO/PO Alarm Type [Pick-List: Lo, Hi]
This allows the user to pick the desired output that the instrument
will go to in the event of a transmitter failure:
Digital Not
Applicable
4 to 20 mA Downscale (3.75 mA)
Upscale (20.38 mA)
Scaled Pulse Downscale (Off)
Upscale (125 Hz)
Default: Upscale
Piping Configuration [Pick-List]/
Upstream Distance [numeric entry]
These selections allow the Reference K-factor to be corrected auto-
matically for upstream piping disturbances via a menu selection of
the piping configuration and a numeric input of the upstream pipe
length in pipe diameters (PD). The piping configuration pick-list is as
follows