Frequently Asked Questions

Questions
  1. My Candura analyzer hasn't been used for a few months and now the battery is dead. I plugged in the charging cable and it still doesn't power up. What is wrong with it?

  2. The voltage and current measurements are out of spec, does the unit need calibration?

  3. I was at the end of a 1 week recording, but mistakenly pulled out the memory card before stopping the recording. Now I can’t open the file, is there any way to recover the data?

  4. Can I use memory cards that are not from Candura?

  5. We only need Candura’s analyzer for a short term project, do you provide rental service?

  6. Is the latest PV II software backward compatible with files that were saved from older version software?

  7. Can I measure a system without using Channel 1 voltage?

  8. Windows pop up a 'Scan and Fix (recommended)' message box when I inserted a memory card with data on it. I allowed it but then the card became blank and data files are not listed anymore. What went wrong?

Answers
  1. All models of Candura analyzer has battery protection circuit built inside. However, it is still possible for battery to deplete beyond recovery. If you have alrady plugged in the power supply and allowed the unit to recharge for a period of time, but still having trouble powering up the unit, try to perfrom a hardware reboot by doing the following

    • For PowerPro: Press F3, F4, F5, F6 simultaneously.
    • For EnergyPro: Press F1, F2, F3, F4 simultaneously.
    • For PQPro: Press the Power button.

    Please contact us for further assistance.

  2. For current mesaurements, make sure you are using CTs that are calibrated for your specific analyzer. You can confirm that by checking the serial# on the CT. The first section of the numerical digits of the CT serial # should match the numerical digits of the analyzer serial #.

    Calibration factors are stored internally inside of each Candura analyzer. Due to wear and tear from usage, the CT’s inductive properties might vary slightly over time, thus calibration factors will need adjustments as well. We recommend annual calibration as a way to maintain optimal accuracy for the analyzer. Please contact us to inquire about our rate for Calibration.

  3. Usually the software can recover the data when this happens. If the software is unable to recover the data it may be possible that our engineers can manually extract the data from the card. Please contact us if you run into this problem.

  4. We use genuine SanDisk memory cards for maximum reliability. However counterfeit memory cards are commonly found on the internet (and even at some reputable stores!). Counterfit memory cards may cause data corruption or may not be recognized by Candura’s analyzer. Our customers should either use memory cards from Candura or purchases SanDisk cards from reputable sellers.

  5. Yes we provide rental service from 1 week to as long as you need it. Please contact us for rates and availability of rental units.

  6. Yes, the software is backward compatiable and you can open processed data file from previous versions.

  7. No, V1 must always be used. V1 zero crossing is used to synchronize the data sampling and measure frequency. In the event of an outage on V1 the Candura analyzer has internal digital phase lock loop that simulates the zero corssing until V1 is restoreded.

  8. In order to record and store a large amount of data continuously, Candura analyzers use a proprietary File System to handle reading & writing data to the memory cards. Because of this reason, Windows sometimes might mistakenly identify the card as problematic and ask for ‘Scan and Fix’. Always select ‘Continue without scanning’, as Windows’ own ‘Scan and Fix’ might corrupt the File System header and render the recorded file un-readable.
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