Spectrex Quasar 900 Open-Path Gas Detection System Manual de usuario descargar pdf (Pagina 57)

Periodic Maintenance 45

8 Troubleshooting

Table 14: Troubleshooting

Problem

Cause

Solution

“Maintenance call”

status or R and S are

below 2V DC at Gain

Poor alignment

Perform alignment

Dirt on the

window

Clean the window

Poor light source

Replace the light source

Detector fault

Replace/repair Detector

NQRat below the

permitted limit

Gas in the path

Make sure that the path is

clean and the weather

conditions are good

NQRat above the

permitted limit

Poor alignment

Perform alignment

Temperature higher

than 25° C beyond

the room

temperature

Electronic

problem

Replace/repair Detector

Ratio1 and Ratio2 out

of the limit

Poor alignment

Perform alignment

Dirt on the

window

Clean the window

Detector fault

Replace/repair Detector

Voltage less than 16V

DC. The Detector at

“V” fault

Low input

voltage

Check the power supply and

installation

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Spectrex Quasar 900 Open-Path Gas Detection System Manual de usuario Pagina 57

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