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23 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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Making beaded probes on a thermocouple wire
A thermocouple is a kind of battery made by joining two dissimilar metals together where a small voltage is generated by the difference between teh metals. The voltage gnerated changes with temperature. To make a thermocouple temperature sensor out of thermocouple extenision wire, strip the insulation back a little and make an electrical connection between the two wires. The more reliable your connection, the more reliable the thermocouple. Welding is the best way to form a reliable thermocouple. A resistance welding machine (spot welder) can be used (with practice), and TIG welding works nicely too.
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Thermocouple wire material rating
Below are ratings on the material, not to be confused with measurement range.
Common TC types used on HOBO data loggers:
Type-J and Type-T wire is Teflon insulated and rated up to +400°F (+200°C) continuous, and +482°F (+250°C), for 24 hours
Type-K wire is glass-braid insulated and rated up to +900°F (+482°C) continuous, and +1000°F (+537°C) for a short single exposure.
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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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Launch Basics in HOBOware
Learn the basics of HOBOware software's Launch window. Note that most of these features are common for all HOBO loggers that are compatible with HOBOware.
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Readout Basics in HOBOware
Learn the basics of the Readout dialog window in HOBOware software. Note that most of these features are common for all HOBO loggers that are compatible with HOBOware.
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Logging Duration in the Launch Screen- What Does That Mean?
In the HOBOware and HOBOmobile Launch screens there is a number that is presented as "Logging Duration" (see attached screen shot)
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