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Is accuracy the concern if using EL-USB-LCD to measure temperatures up to 100 deg C

May 06, 2015
Deborah Gettings wrote
Manufacturer spec for the EL-USB-LCD is -35 to 80 deg C. Only the probe gets warmer than ambient temperature (not the whole logger). We have been happily using several of these data loggers to measure temperatures up to 100 deg C. The results have looked quite reasonable. Is this item really only warranted as accurate (+/- 0.5 deg C) up to 80 deg C?

I hate to have to buy the high temperature EL-USB-1-PRO.

Thanks
Reply
3 Answers
May 07, 2015
Shawn agent wrote
Deborah,

The accuracy spec for the EL-USB-1 is actually ±1°C (±2°F). For better accuracy (±0.2°C (±0.4°F)), the EL-USB-1-PRO would be your best bet.

Regards,
DATAQ Instruments Support
May 07, 2015
Deborah Gettings wrote
Thank-you for your reply.

+/- 1 deg. C is fine for accuracy.

We want to have a certification that the readings are accurate to +/- 1 deg C for the range 0 - 100 deg C. Do I need to buy one standard point (CAL-USB-TEMP-1, 0 deg. C) and also one non-standard point (CAL-USB-TEMP-2, 100 deg. C)?

Also, how long is the certification good for?

Thank you
May 08, 2015
Shawn agent wrote
Deborah,

While we can provide a certificate of conformance, stating that the EL-USB-1-LCD will produce data that is within the specification outlined in the datasheet, you would need to request the NIST traceable calibration certificate at the time of purchase ($35 for a single data point, $20 for additional points).

Regards,
Shawn MacDonald
Application Engineer
DATAQ Instruments Inc.