YOKOGAWA ZR402G - User Manual

Questions and Answers

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Paul SmithAug 14, 2025
What to do if I get Alarm 7 on my YOKOGAWA ZR402G Measuring Instruments?
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  John RobinsonAug 14, 2025
  If you're seeing Alarm 7, it could be due to a discrepancy between the oxygen concentration of the span gas and the set value, or the span gas flow might be outside the specified range (600 ± 60 ml/min). In such cases, try performing the calibration again. Additionally, a damaged cell assembly with abnormal cell voltage can trigger this alarm, requiring a cell replacement.
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Kelly PetersAug 17, 2025
What should I do if my YOKOGAWA ZR402G shows Alarm 6?
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  andrewvalenciaAug 17, 2025
  If you encounter Alarm 6, it might be because the zero gas oxygen concentration doesn't match the set value, or the zero gas flow is outside the specified range (600 ± 60 ml/min). Performing the calibration again should resolve this. If the sensor assembly is damaged, and the cell voltage is not normal, replace the cell (sensor) with a new one.
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Ashley WoodsAug 20, 2025
How to fix Error-1 Cell Voltage Failure in YOKOGAWA ZR402G?
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  Kevin WilliamsAug 20, 2025
  If you're getting Error-1 on your YOKOGAWA Measuring Instruments, start by turning off the equipment's power. This error could stem from several causes: * A continuity failure between the cell assembly electrode and the contact. * Damage or deterioration of the cell assembly, which would necessitate replacing it. * An improper connection between the sensor and the electronics, so ensure they are properly connected. * Wiring failure inside the detector or abnormality in the converter electronics – in these cases, contact your local Yokogawa service or sales representative.
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Jacqueline CoxAug 25, 2025
Why am I getting Alarm 8 on my YOKOGAWA ZR402G Measuring Instruments?
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  chase00Aug 25, 2025
  If you are seeing Alarm 8 on your YOKOGAWA Measuring Instruments, it could be due to several reasons. First, make sure that the calibration gas flow is at the specified rate (600 ± 60 ml/min) and check for any tubing leaks. If the tubing's length or thickness has been altered, replace the sensor assembly. Ensure that the measuring gas does not flow toward the probe's tip. Lastly, if the sensor (cell) response has deteriorated, you'll need to replace the sensor assembly.
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dramirezAug 27, 2025
What to do if YOKOGAWA ZR402G shows Error-2 Heater Temperature Failure?
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  bryanAug 27, 2025
  If your YOKOGAWA Measuring Instruments displays Error-2, it could be due to a faulty heater or thermocouple in the probe, indicated by heater wire breakage. In this case, replace the heater assembly. If the issue persists, there may be a failure in the converter electronics, and you should consult your local Yokogawa service or sales representative.
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adamsmichaelAug 30, 2025
What does Alarm 11 on YOKOGAWA ZR402G mean?
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  Evan JohnsonAug 31, 2025
  If you're seeing Alarm 11 on your YOKOGAWA Measuring Instruments, it could be due to a failure of the thermocouple at the detector, requiring replacement of the heater assembly. Alternatively, it could indicate a failure of the electrical circuits, in which case you should consult your local Yokogawa service or sales representative.
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geoffreyrobertsSep 2, 2025
How to troubleshoot Error-3 A/D Converter Failure in YOKOGAWA ZR402G Measuring Instruments?
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  Lisa ParkerSep 3, 2025
  If you are experiencing Error-3 with your YOKOGAWA Measuring Instruments, try turning off the power to the converter and then restarting it. Also, check the power supply system for failures and ensure the converter and detector are securely grounded. If the problem persists, consult the service personnel at Yokogawa Electric Corporation.
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Joshua BrooksSep 6, 2025
What to do if I see Error-4 Writing-to-memory Failure on YOKOGAWA ZR402G Measuring Instruments?
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  Joel CooperSep 6, 2025
  If you're facing Error-4 with your YOKOGAWA Measuring Instruments, try turning the power off and then on again. Also, check the power supply system for any failures and ensure that the converter and detector are securely grounded. If the issue continues, consult the service personnel at Yokogawa Electric Corporation.
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Jorge HillSep 10, 2025
How do I resolve Alarm 10 Cold Junction Temperature Alarm on YOKOGAWA ZR402G?
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  Daniel LewisSep 10, 2025
  If you encounter Alarm 10 on your YOKOGAWA Measuring Instruments, apply heat insulating material to the furnace walls and add a sun shield to block direct sunlight. If the problem persists, contact your local Yokogawa service or sales representative.