Omega Engineering FLR1000 Troubleshooting Guide, Symptom Possible Cause Method of Correction

Page 26

H.Troubleshooting Guide

Symptom

Possible Cause

Method of Correction

Unit Leaks

Fittings not tight enough.

Tighten fittings (see section

 

 

B4)

 

Sensor assembly cracked

Unit must be returned for

 

 

repair (see Section J)

No output signal or

No power or low power

Apply correct power

flow indication

No flow passing through

Display or output should

 

 

unit

read zero.

 

Output shorted or

Check electrical connections

 

overloaded

(see section B5)

 

Improper connection

Check electrical connections

 

 

(see section B5) and ensure

 

 

connector is correctly

 

 

plugged in.

 

Moisture on internal

Allow unit to dry out in a

 

electronics

dry environment.

 

Output circuitry damaged

Unit must be returned for

 

 

repair (see Section J)

 

 

 

Flow indication

Flow is actually fluctuating

Correct flow source to

“bounces” or

 

obtain steady flow

fluctuates

Using a pulsatile or piston

Switch to a stable source of

 

 

pump that causes a

gas

 

pulsating flow of gas

 

 

Not using the fittings

Use the supplied fittings

 

supplied by the

 

 

manufacturer

 

 

Moisture in sensor

Remove moisture and allow

 

 

unit to dry out

 

Turbulence in tubing or

Straighten the inlet tubing

 

sensor

or lengthen it to at least 6”

 

 

(150mm)

 

Fluctuating input power

Correct the power source or

 

 

change to a regulated

 

 

supply

 

Mechanical sensor assembly

Unit must be returned for

 

damaged

repair (see Section J)

 

 

 

pg. 26 of 29

Image 26
Contents FLR 1000 & 1000-BR Series Flow Sensors & Meters For Gases Page B L E O F C O N T E N T S Product Overview and Principle of Operation IntroductionUnpacking Installation General Considerations Mounting the Flow Sensor or Flow MeterTubing Connections Electrical Connections Overview Connecting a Cable Assembly Electrical Connections Voltage Output Units Using a 0-5VDC Output Power Adapter Package Flow Readings OperationStart Up 5VDC Analog OutputsFlows Below the Minimum Rated Flow Operating at Flow Rates Outside the Calibrated Flow RangeFlows Above the Maximum Rated Flow Recalibration Zero AdjustmentsUsing Flow Sensors or Flow Meters with Different Gases Corrected Flow = Flow reading X Correction FactorPage General Maintenance and Product CareCleaning and Flushing Returning Units for Repair or RecalibrationSpecifications For Gas Units FLR1000 FLR1000-D FLR1000-BR-DConnector Pin And Wire Color Cross Reference Pin Cable Wire Color DescriptionDimensions FLR 1000 For Gases 10.0 l/min Units Acetal Fittings Shown Page Page Page Page Page Troubleshooting Guide Symptom Possible Cause Method of CorrectionSymptom Possible Cause Method of Correction Page M4575/0807 pg