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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 onli

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Wiring Diagram - HOBO RX3000 - Wiring Analog Sensors to the RXMOD-A1 Module

Attached is a diagram that shows how to connect sensors to the optional 4-channel RXMOD-A1 analog input module.

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ZW (Zigbee 802.15.4) Radio Channels vs WiFi (802.11)

Attached is a drawing that depicts IEEE802.11 (WiFi) radio channels vs IEEE802.15.4 radio channels

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4-20mA Current Loop Isolator

Below is a link to a current loop isolator that Onset has tested with our data loggers.

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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.

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H21-USB Driver Resources

Below are links to the documentation for loading the drivers required for using the H21-USB logger.

Links for FTDI installation documents and drivers

Windows 7

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MX2001 - Submersion of Upper Portion of the Logger

The top part of the HOBO MX2001 logger includes a barometric-pressure sensor and its associated sensor port.

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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.

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Wiring Diagram - Monitoring Energy in a 3-phase Circuit using the HOBO H21-002 Micro Station and the Wattnode kWh Transducer

Attached is a wiring diagram that shows how to connect a Wattnode kWh Transducer to a H

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