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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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Installing Onset soil moisture sensors
Use the attached guide as a reference when deploying soil moisture Smart Sensors.
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Calibrating ECH2O Soil Moisture Sensors Application Note
Onset adds smart sensor adapters to the ECH2O probes so that they are plug‐and‐play compatible with HOBO® U30 stations and HOBO Micro Stations.
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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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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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Wiring Diagram - How to Connect Multiple Sensors to One AC-SENS-1 Power Supply
Attached is a drawing that shows you how to power multiple external sensors with (1) AC-SENS-1 Power Supply.
Please note that the AC-SENS-1 can supply 12VDC to a maximum load of 400mA.
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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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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 Humidity Sensors in HOBO Data Loggers for complete details on the recommended procedure to follow.
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