Onset HOBO User Manual

Chapter 2: Using the logger
HOBO Energy Logger Pro User’s Guide 5
To set up the logger, take the following steps:
1. Insert the batteries or connect external power source. To install batteries, use a Phillips head
screwdriver to loosen the screw on the back of the battery compartment door. Remove the door. Install
eight fresh 1.5 V batteries, being careful to match the polarity marked in the battery compartment. (Refer to
“Selecting batteries” on p. 12 for tips on selecting the right battery type for your application.) Replace the
battery compartment door and tighten the screw to secure it. Do not over-tighten the screw.
To use an external power source, plug the power adapter into an electrical outlet or other power source,
then plug the power adapter into the external power jack.
2. Install FlexSmart modules (if applicable). Remove the protective cap from the module connector on the
logger. Align the connector on the back of the FlexSmart module with the connector on the logger, and
gently press the module into place.
You can install up to three FlexSmart modules on the logger. Modules may be plugged into any slot in any
combination.
3. Attach the third-party sensors to the modules (if applicable). For information on installing the third-
party sensors, refer to “Modules” on p. 15 and the instructions that came with the sensor.
4. Connect the Smart Sensors (if applicable). Plug up to six Smart Sensors into the RJ-12 modular jacks, or
use splitters to install more than six. (Keep in mind that some Smart Sensors have more than one sensor
channel.) The logger supports up to 15 sensor channels, plus the logger’s own battery channel (if selected
for logging).
5. Connect to the host computer. Use the serial interface cable (part # CABLE-PC-3.5) to connect the
logger to a computer running HOBOware Pro. If your computer does not have a serial port, you can use a
Keyspan™ USB serial adapter (part # CABLE-USB232) to connect the logger to a USB port on your
computer.
6. Access the Launch window in HOBOware Pro. In the Launch window, you should see a list of all the
Smart Sensors and FlexSmart modules you connected to the logger.
Bottom view of module

Onset HOBO Specifications

General

Battery Life	Depends on model. Typically 1 year, but can be several years depending on logging rate, parameters logged, and other factors.
Humidity Range	0% to 100% RH
Data Download	USB, Bluetooth
Logging Rate	1 second to 18 hours (configurable)
Dimensions	Varies by model. Check specific model specifications.
Weight	Varies by model. Check specific model specifications.
Waterproof	Yes (IP67 rated for some models)
Accuracy	±0.2°C (temperature), ±2.5% RH (humidity, varies by model)