Hobo MX Series Quick Start Manual
Direct read logger
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HOBO MX802 Direct Read Logger Quick Start Guide
Overview
The HOBO MX802 Direct Read Logger is designed to be used with compatible HOBO W-Series sensors to
log water parameters such as conductivity, temperature, depth and more.
This logger is typically deployed with the sensor connected via direct-read cable. The sensor remains in the
water while deployed and the logger is above the water for convenient wireless Bluetooth readout. The
MX802 is weatherproof but not waterproof, so it must be mounted in such a way so that it remains above the
water. The cables must be attached to the sensors for them to be waterproof and attached to the logger for
that to be weatherproof.
If you are using this logger with two sensors, you will need to use the 2-sensor adapter. See the manual that
comes with that adapter for attaching the two sensors.
The following is an overview of the steps for configuring and deploying your logger:
1. Connect the Sensor
2. Calibrate the Sensor
3. Deploy the Logger
4. Configure Your Logger
5. Download Your Data
6. Process the Data
Note: We recommend that you put the logger together as described below. If you are
using either a W-CTD or a W-CT sensor, soak the sensor for 24 hours before you begin
calibration.
Connect the Cable and Sensor to the Logger
1. Take the rubber cap off the end of the logger.
2. Connect the cable to the logger by aligning the alignment pin on the cable connector with the align-
ment hole on the logger connector. Do not force the connection because you do not want to bend any
of the pins.
Important: When assembling the logger or attaching the cable, make sure the o-rings
and cable connector surfaces are clear of any debris. Any contamination of these sur-
faces can cause leaks that lead to logger failure.
U.S. and International Sales: 1-508-759-9500
www.onsetcomp.com/contact/support
© 2019–2024 Onset Computer Corporation. All rights reserved. Onset, HOBO, HOBOlink, and HOBOnet are
registered trademarks of Onset Computer Corporation. All other trademarks are the property of their respective
owners. This product has been manufactured by Onset Computer Corporation and in compliance with Onset's
ISO 9001:2015 Quality Management System.
25706-A MAN-MX802-QSG
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Summary of Contents for Hobo MX Series
- Page 1 HOBO MX802 Direct Read Logger Quick Start Guide Overview The HOBO MX802 Direct Read Logger is designed to be used with compatible HOBO W-Series sensors to log water parameters such as conductivity, temperature, depth and more. This logger is typically deployed with the sensor connected via direct-read cable. The sensor remains in the water while deployed and the logger is above the water for convenient wireless Bluetooth readout.
- Page 2 HOBO MX802 Direct Read Logger Quick Start Guide 3. Attach the tapered coupler over the connection between the cable and the logger. To do so, ensure that the magnetic fob is attached to one half of the tapered coupler. Snap one side of the coupler over the connection between the cable and the logger with the tapered end toward the cable.
- Page 3 HOBO MX802 Direct Read Logger Quick Start Guide Download and open HOBOconnect You need to use HOBOconnect with your HOBO MX Series loggers. To download HOBOconnect go to: www.onsetcomp.com/products/software/hoboconnect Calibrate the Sensor If you are using conductivity, CTD, or DO sensors, calibrate them in your office or lab before configuring the loggers for deployment.
- Page 4 HOBO MX802 Direct Read Logger Quick Start Guide Download Your Data 1. At the end of the deployment, we recommend taking measurements of any critical water parameters, and making notes of these values and the time they were taken. These could be useful later for data validation and data correction if necessary.