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How to Load the H21-USB Communications Driver

Learn how to load the driver required for communicating with your H21-USB logger. This is a one-time download from the Internet required on Windows machines prior to using the logger.
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How to reconfigure your S-FS-TRMSA-D Module for use with an RX3000 Station

See how to reconfigure your TRMS module for use with an RX3000
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Sensor Location Drawing

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Connecting to the eGauge without a network

Below are the recommended steps to establish communication with an eGauge when the eGauge Ethernet port is directly connected to the Ethernet port of a computer, and the eGauge is configured for DH

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Build Your Own Thermistor

For instructions on how to build your own thermistor, please see attachment.

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Voltage Divider for High Voltage Measurements

Please see attached.

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HOBO RX3000 and the TRMSA-D FlexSmart Module

If you are using both TRMSA-D FlexSmart modules and smart sensors with your HOBO RX3000 station, you are limited to a maximum of three TRMSA-D modules and any combination of smart sensors to reach

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Exporting Data from EG4100 Series Devices

From the home screen, click the export button in the upper left of the graph (highlighted in yellow below).

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HOBO MX2501 pH Electrode and Logger Storage

When storing the HOBO MX2501 pH logger over an extended period of time, remove the electrode from the logger and place it in the electrode storage bottle with clean, fresh storage solution.

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HOBO MX2501 User-Replaceable Electrode Info

With gel electrolyte and double Pellon® junctions minimizing the chance of contamination of the reference electrolyte, the user-replaceable, plastic-bodied pH electrode for the HOBO MX2501 pH logge

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