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62 results found.
Logger power failure and data loss
The data is stored on non-volatile EEPROM. For data loggers with external batteries: change batteries and offload data, then relaunch normally. For data loggers with internal batteries: as long as the EEPROM has not been damaged, the data can be retrieved by Onset. Please contact the place of purchase for a return authorization number and request data back service.
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How often do temperature data loggers need recalibration and/or servicing?
All sensors drift over time and they can be tested in a controlled environment to make sure that they are running within the specifications outlined in the User's Manual. You can use methods such as a simple ice bath or an environmental chamber to verify your device is operating correctly.
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Boosting mV outputs to 0-2.5 DC outputs for use with HOBO stand-alone data loggers
Simple non-inverting op-amp amplifier circuit - how to boost mV to 0-2.5V DC.
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Weather station setup
Unfortunately, we do not have installers for our weather stations. We do, however, have a series of videos along with the complete user manual to help you assemble your station.
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Data logger is shutting off prematurely
A discharge of static electricity may cause a running data logger to stop recording. Precautions should be taken to prevent this while handling the data logger.
Discharges may occur when there is a charge difference between the data logger and a cable being connected to it or when a person touches an exposed jack.
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Smart sensor cable fix
Problem: My smart sensor data shows a -888.888 for a good portion of the data file.
Note: -888.888 means that the logger could not find the smart sensor after the logger was launched successfully.
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Verifying RH accuracy on HOBO data loggers
Testing the accuracy of relative humidity sensors requires carefully-controlled conditions and a considerable amount of time. Please see the white paper Testing the Accuracy of Sensirion Relative Humidity Sensors in HOBO Data Loggers for complete details on the recommended procedure to follow.
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