Ransburg RF1 FiberOptic Meter 77786-XX, A11516-XX - Manual (Page 12)

FM-00-02.5 8 8 8 8 8
Keep the transmitter pickups away from rust, iron
filings, and other magnetic debris which will stick
to the pickups. This debris will not cause any
damage to the transmitter but will need to be
completely removed before the transmitter is
mounted on a flow meter.
Protect the fiberoptic connectors on both the
transmitter and receiver from the ingress of dirt,
dust and debris until the fiber cabling is attached.
FLOW RA FLOW RA FLOW RA FLOW RA FLOW RATE ACCURACY TE ACCURACY TE ACCURACY TE ACCURACY TE ACCURACY
Flow rate accuracies of 0.5% are not uncommon
with many fluids if the flowmeters are calibrated
at or near the expected flow rates. Even with
wide flow rate swings (such as when used with
robots under analog control) accuracies of
+ /- 2%
are achievable.
REVERSE FLOW REVERSE FLOW REVERSE FLOW REVERSE FLOW REVERSE FLOW
DETECTION DETECTION DETECTION DETECTION DETECTION
Sensors are of the quadrature type, which allows
reverse flow detection, if necessary. Under
conditions where reverse flow detection is not
necessary, only one sensor output is used,
leaving the second sensor output as a spare
output that can be used if the first sensor should
ever fail or used in parallel to drive remote flow
displays, etc.
RF 1 Fiber Optic - Introduction
> The fiber optic cable assemblies contain a
plastic optical fiber that can be permanently
damaged if bent in too small of a radius. Ob-
serve the minimum bend radius as noted in the
specifications section of this manual.
C A U T I O N C A U T I O N C A U T I O N C A U T I O N C A U T I O N
!
FLUID P FLUID P FLUID P FLUID P FLUID PASSAGES ASSAGES ASSAGES ASSAGES ASSAGES
The high pressure RF 1’s side inlet port uses a
3/8” AN female fitting. This style fitting eliminates
flow “dead space” or exposed threads, and also
eliminates the need for specially designed fittings
or Teflon inserts. By creating a streamlined fluid
passage, color change time of the meter is
improved.
The low pressure RF 1’s bottom inlet unit mounts
directly to the MCV block and is sealed by o-rings.
> The transmiter functions by detecting
changes in very weak magnetic fields caused
by the rotation of the gears within the flow
meter. Unfortunately, it will also respond to
stray magnetic fields if they are present from
other sources. Stray fields can be caused by
nearby transformers, relays, solenoids, or AC
line energized wiring. For proper operation,
the transmitter must be located away from
these stray fields. Installing the transmitter in
a location that exposes it to stray magnetic
fields will result in improper operation.
C A U T I O N C A U T I O N C A U T I O N C A U T I O N C A U T I O N
!
MOUNTING LOCA MOUNTING LOCA MOUNTING LOCA MOUNTING LOCA MOUNTING LOCATION TION TION TION TION
FOR THE TRANSMITTER FOR THE TRANSMITTER FOR THE TRANSMITTER FOR THE TRANSMITTER FOR THE TRANSMITTER
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