Wiring Diagram - Monitoring a DC Voltage Change with the HOBO UX120-017 and HOBO UX90-001

Attached is a drawing that shows how to monitor a DC voltage change with the HOBO UX120-017 and the HOBO UX90-001. Note that the DC voltage must go below 0.4VDC to be detected as a low state. It...

HOBO Professional Support Services

Our goal is to ensure our customers receive comprehensive support to deploy, manage, and make the most out of their HOBO products and purchases. That's why we offer a range of professional services...

Custom pH Buffers to Calibrate the HOBO MX2501 pH Logger

The HOBO MX2501 pH logger calibration procedure is only designed to work with National Bureau of Standards (NBS) pH buffers 4.01, 7.00, and 10.00. However, users can check the calibration of the...

Davis Rain Gauge (S-RGC-M002, S-RGF-M002 & S-RGE-M002) Cable Routing

See attached photos for clarification. This is also covered in each product's respective manual, which can be found on the following product web pages under the Documentation tab: http://www...

Calibrating S-SMC-M005 and W-SMC Soil Moisture Sensors

The attached application note - Calibration Equations for the S-SMC-M005 Soil Moisture Sensor - details the process for calibrating soil moisture data. This same process can be used to verify the 3%...

HOBO Waterproof Shuttle U-DTW-1 LED Error Codes

The numbers below indicate a blink pattern. The first digit is the first part of the blink pattern and the second digit is the second part of the blink pattern. For the number 11, the visual...

Wiring Diagram - Monitoring DC Voltage and Current with the H22-001 Energy Logger

Attached is a drawing that shows how to monitor DC voltage and/or current using the H22-001 Energy Logger via the S-FS-CVIA Analog Module. For DC current monitoring, the T-VER-H971BP-200 DC Current...

Brand New Ultrasonic Wind Speed Sensor (S-WCG-M003) Not Working

If you connect the battery to your brand new Ultrasonic Wind Speed Sensor (S-WCG-M003) and it does not appear to be working, just bring the sensor outside in the daylight for a bit. In order for the...

Troubleshooting communication issues with USB data loggers, base stations, and shuttles

If you're experiencing communication issues with your USB data logger, base station, and shuttle, here are a few things to consider: If using Windows - Be sure that your OS is supported and...

Barometric Compensation Method

Barometric Compensation Method - Technical Details This section presents the details of how the Pressure values are computed, and how Pressure and Temperature values are converted to Water Level...

4-20mA Current Loop Isolator

Below is a link to a current loop isolator that Onset has tested with our data loggers. Because the analog inputs on all HOBO analog loggers and modules are single-ended (returns are tied common),...

RX3000 Battery Life

See attached excerpt from the RX3000 User Manual