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HOBO UX120-017: Dry contact, channel voltage.

When the switch is closed, low voltage (0V) is detected. When the switch is open, a 100K pull-up resistor brings the processor input pin to 3.3V.

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HOBO MX110X buzzer decibel (dB) output

The buzzer decibel (dB) output of the HOBO MX1100 logger series is 65 dB to 75 dB, depending on battery level.

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Wiring Diagram - Monitoring Three- Phase Energy using the HOBO UX90-001 and the Wattnode kWh Transducer

Attached is a drawing that illustrates how to use a HOBO UX90-001 State Data Logger and a T-WNB-3D-480 3-phase kWh Transducer to monitor energy consumption on a three-phase circuit.

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Pendant Optics

Attached please find an image that shows the location of optic LEDs in Pendant (UA-series) loggers. All Pendant optics are located in the same location on all models.

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Proper Coupler Seating, BASE-U-4 (Optic Base station) and the U-DTW-1 (Waterproof Shuttle)

The attached image shows both the incorrect and correct assembly of a logger coupler to the BASE-U-4 (Optic Base station) and the U-DTW-1 (Waterproof Shuttle).

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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:

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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.

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Adding or Removing Smart Sensors from a HOBO RX3000 Station

To add or remove smart sensors from a HOBO RX3000 station:

1. If the station is currently logging, press the Stop button to stop it.

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Deploying water temp and water level loggers or developing a QAPP

For users looking for guidance on deploying temperature or water level loggers, or developing a QAPP (Quality Assurance Project Plan), here is a great reference from the EPA:

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Moving the HOBO ZW Database from One Computer to Another

To move or copy your HOBO ZW Datanode database from one computer to another, you will need to copy a folder called "COSMOS" and all of its contents to a specifc location on the new computer.

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