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Section 1: Introduction
HOBO Energy Logger User’s Guide
5
Smart Sensors
The Energy Logger can accommodate up to six Smart Sensors to monitor
temperature, humidity, pressure, current, voltage, pulses, and other
properties. Smart Sensors are automatically detected when logging
begins, and do not require any configuration.
Components
Figure 1: Components
Section 1: Introduction
6
HOBO Energy Logger User’s Guide
FlexSmart Module Ports
Up to three FlexSmart modules can be installed on the logger. These can
consist of any combination of Analog and TRMS modules. Third-party
sensors (available through Onset) are connected to the logger through the
terminals on these modules.
Trigger Button
Hold down the button for at least two seconds to manually start the
logger in the field if the
Trigger
start option was selected in HOBOware
during launch.
Indicator LEDs
There are three green and three red status indicators. The green indicators
blink to show status or activity. The red indicators blink to show that
battery or memory is low, or that a sensor error has occurred. For more
detailed description of the indicators, refer to Diagnostics and
Troubleshooting on page 34.
Stereo Jack for Serial Cable
The serial interface cable is connected to this port to communicate with
HOBOware or the HOBO U-Shuttle.
RS-232 Jack
This port allows you to connect the logger via a DB9 connector instead
of the stereo jack. The pinout for the logger's RS-232 connector is as
follows:
Pin # Function
1
DCD (Connected internally to 4)
2
RxD (Logger Received Data In)
3
TxD (Logger Transmit Out)
4
DTR (Connected internally to 1)
5 Signal
Ground
6 NC
7
RTS (Connected internally to 8)
8
CTS (Connected internally to 7)
9 NC
Shell
Logger Chassis Ground
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