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Connecting a 4-20mA to an external input
The 4-20mA cable (CABLE-4-20mA) measures currents from 0 to 20.1mA. The cable must be connected such that the current flows through, and with the proper polarity, as shown in the diagram. (Do not expose to current above 20mA or negative current.) Do not cut off the end of the gray cable where it connects to the blue and yellow wires, as this contains the precision resistor required for current measurements.
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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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U30 and excitation wiring with S-VIA-CM14 modules
Here is a wiring diagram for use with external sensors and the S-VIA-CM14s. Remember the excitation current required to power the external sensors cannot exceed 50 milliamps total.
http://www.onsetcomp.com/files/U30%20VIA%20and%20S_VIA_CM14.JPG
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SMS text messaging
Sending SMS through mobile phones is easy. If you can be reminded through email, you can now be reminded through SMS.
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U9 - static analysis of induction motor leakage field
For help while deploying your motor on/off logger, please view attachment.
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Unmap DTF files in Hoboware
Often this issue manifests itself when both Hoboware and BoxCar software are installed on the same computer. To correct the issue, simply unmap DTF file in Hoboware. (If you use a weather station, energy logger, or U30, you might not want to do this as the DTF extension will open in BoxCar.)
In Hoboware go to: File / Preferences / File associations.
Click "UnMap" on the DTF file type line.
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U30 Analog Inputs
This information is included in the U30 manual. See attachment.
Includes hardware.
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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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