Wiring Diagram - HOBO UX120-006M, U12, H08 Voltage Logic Switch

Attached is a wiring diagram that shows how to monitor switch closures with a HOBO UX120-006M, U12, or H08 via the CABLE-2.5-STEREO voltage input cable. Products depic

HOBO MX1101 & InTemp CX400 - Audible Alarm Sound Levels

The audible alarm outputs a tone measured at 75db with fresh batteries, and 65db with very low batteries.

Why Do I Always Have to Calibrate in pH 7.00 and Then at Least One Other Buffer?

pH is considered an inferred value. This means that raw data (in this case potential as mV and temperature) are used to calculate pH with a known algorithm called the Nernst Equation. It's...

How to change a battery in a HOBO Pendant Data Logger

Learn how to properly replace a battery in a HOBO Pendant Data Logger. Products included are the UA-001-08/64, UA-002-08/64, UA-003-64 and the UA-004-64

The effects of electroshock fishing on underwater loggers

Although we have not tested this, we have run into incidents in the past where customers have left data loggers in this situation and have not had a problem. On the other hand, we have also had...

USB popup errors on Windows XP

Open HOBOWare, plug the logger back in, then click on Start->Settings->Control Panel->System. Click on Hardware->Device Manager and look for the logger listed under: Other Devices or Human Interface...

Using Onset data loggers if computer has USB ports and no serial port

Onset offers a Serial-to-USB Adapter (http://www.onsetcomp.com/products/cables/adapt-ser-usb) that provides a simple way to connect HOBO and StowAway® data loggers to available USB ports on your...

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. For millivolt range input voltage to the data logger, you will need to amplify (multiply) your signal to utilize the...

Altitude effects on water level data logger range

Onset's HOBO® U20-001-01 Water Level Data Logger is calibrated from 10 to 30 psia. The 10 psia lower limit creates an effective altitude restriction of about 10,000 feet when the data logger is used...

U9 - static analysis of induction motor leakage field

For help while deploying your motor on/off logger, please view attachment.

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...

ACT Evaluation Report on the HOBO U26 DO Logger

The HOBO U26 Dissolved Oxygen logger has been part of a multi-year evaluation of DO loggers and sensors by the Alliance for Coastal Technologies (ACT), and the results have just been published online...