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

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FM-00-02.5

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TROUBLESHOOTING GUIDE

RF 1 Fiber Optic - Maintenance

2 2

Neither receiver

Neither receiver
LED flashes with

LED flashes with

LED flashes with
fluid flow in the

fluid flow in the

fluid flow in the
meter. System

meter. System

meter. System
appears dead

appears dead

1. No DC power to the receiver

2. Insufficient fluid flow through the
meter

3. No light pulses from transmitter

1. Check receiver wiring. Verify

+8-30 VDC at pin 6 of J8 on
the receiver PCB.

2. Increase fluid flow through the

meter. The flow must be great-
er than 10cc/min. to be detect-
ed.

3. Remove the fiber cable from

the transmitter and look into
the fiber connector on the
transmitter. Faint red light
pulses should be seen. It may
be necessary to use an inspec-
tion mirror and shield against
ambient light to see this.

General Problem

Possible Cause

Solution

Light pulses veri-

Light pulses veri-
fied at transmitter.

fied at transmitter.

fied at transmitter.
Receiver still dead

Receiver still dead

1. Fiber cable not fully seated in the
connector at transmitter or receiver

2. Fiber connections dirty

3. Defective or damaged fiber cable
assembly

1. Reseat the cable in the fiber

connector on both ends.

2. Clean them using glass

cleaner and a soft cloth or
cotton swab.

3. Replace fiber cable assembly

No light pulses at

No light pulses at
transmitter

transmitter

1. Seized / defective meter

2. Defective transmitter

1. Replace meter.

2. Replace transmitter.

NEW INSTALLATION

The red “reverse”

The red “reverse”
LED flashes with

LED flashes with

LED flashes with
forward flow

forward flow

forward flow
through the meter

through the meter

1. Meter installed backwards. Fluid
inlet is on same side of meter as
the fiber connector.

2. Defective transmitter

1. Turn meter around.

2. Replace transmitter

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