Restek 28500 - User Manual

Questions and Answers

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Shelley ArcherAug 11, 2025
Why won't my Restek 28500 Security Sensors power up?
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  wrayAug 11, 2025
  If your Restek Security Sensors unit doesn't power up, the batteries may need to be charged. Charge the unit to resolve this issue.
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Linda MckeeAug 17, 2025
What to do if LEDs stays lit during operation of Restek 28500 Security Sensors?
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  stevensuarezAug 18, 2025
  If the LEDs stay lit during operation of your Restek Security Sensors, it could be due to a couple of reasons. First, the detector might have been re-zeroed before the unit was completely reset; in this case, allow adequate time for the detector to vent gas, then re-zero it. Second, the reference gas or probe inlet might be covered by hand or another object; remove any obstruction to resolve this.
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Emma WaltersAug 25, 2025
Why does my Restek Security Sensors response decreased?
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  curtisjohnsonAug 25, 2025
  If the response of your Restek Security Sensors has decreased, it may be because the detector is not zeroed. Re-zero the detector to correct this.
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amy37Aug 28, 2025
What to do if Restek 28500 Security Sensors does not power up after charging?
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  Janet ShannonAug 28, 2025
  If your Restek Security Sensors unit does not power up even after charging, the batteries may be damaged. The unit can operate while plugged into the adaptor or USB cable, but the unit should be returned to Restek to have the battery replaced.
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Krista HickmanSep 4, 2025
How to fix change in sensitivity of Restek 28500?
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  Marcus ThompsonSep 4, 2025
  If you observe a change in sensitivity with your Restek Security Sensors, there are a couple of potential causes. The probe could be clogged; clean the probe tip to remove any debris. Alternatively, the probe line might be punctured, damaged, or plugged; visually inspect the probe line for holes.