Archive, Rf 1 fiber optic - maintenance – Ransburg RF1 FiberOptic Meter 77786-XX, A11516-XX User Manual

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RF 1 Fiber Optic - Maintenance

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No or erratic oper-

No or erratic oper-
ation at low flow

ation at low flow

ation at low flow
rates

rates

1. Clean meter and transmitter

mounting surfaces, pickups,
and pickup receptacles to
eliminate the problem.

2. Replace meter.

3. Replace transmitter.

1. Transmitter not seated properly on
the meter caused by dirt and debris
under the transmitter, on the pick-
ups, or in the pickup receptacles

2. Meter is binding

3. Defective transmitter

Green and/or red

Green and/or red
LEDs flash with no

LEDs flash with no

LEDs flash with no
fluid flowing

fluid flowing

fluid flowing
through the meter

through the meter

1. Relocate the transmitter away

from the stray fields or relocate
the wiring or equipment gener-
ating the stray field away from
the transmitter.

1. Stray magnetic fields are interfer-
ing with the transmitter. This may
be confirmed by temporarily
relocating the transmitter while
leaving the fiber cable attached.

Receiver LEDs not

Receiver LEDs not
flashing even with

flashing even with

flashing even with
sufficient fluid flow

sufficient fluid flow

1. Replace the fiber cable.

2. Inspect the optical interface

on both the cable and trans-
mitter. A shiny reflection
should be seen on the face of
the LED in the transmitter. The
connector on the end of the
fiber cable should also look
smooth and clean. Replace
damaged components as
required.

1. Fiber cable has become contami-
nated from exposure to chemical
vapors.

2. Fiber connector interface at the
transmitter has become contami-
nated by ingress of solvent, chemi-
cals, and dirt.

General Problem

Possible Cause

Solution

EXISTING INSTALLATION

Green “forward”

Green “forward”
LED in the receiver

LED in the receiver

LED in the receiver
flashes but the

flashes but the

flashes but the
controller sees

controller sees

controller sees
reverse flow

reverse flow

1. Channels “A” and “B” reversed at
the controller

2. Incorrect receiver output configura-
tion

3. Channels “A” and “B” incorrectly
wired

4. Receiver output configuration incor
rect

1. Rewire the receiver at the

controller.

2. Correct the receiver output

configuration.

3. Correct wiring.

4. Correct the receiver output

configuration.

NEW INSTALLATION

(((((Cont.)

Cont.)

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