HOBO Pendant Event/Temp Data Logger
2
0
0.5
1
-20
0
20
40
60
Temperature (°C)
A
c
c
u
racy
/R
es
ol
ut
io
n (
°C
)
Accuracy
Resolution
-125
-100
-75
-50
-25
0
25
-20
0
20
40
60
Temperature (°C)
Ti
m
e
bas
e
E
rr
o
r (
p
p
m
)
Plot A
Plot B
Connecting the logger to the computer
The HOBO Pendant logger requires either of the following to
connect to the computer:
•
Pendant Optic USB Base Station & Coupler (part #
BASE-U-1); HOBOware 2.1 or later
OR
•
Optic USB Base Station (part # BASE-U-4) or HOBO
Waterproof Shuttle (part # U-DTW-1); coupler (part #
COUPLER2-A); HOBOware 2.2 or later
If possible, avoid connecting at temperatures below 0°C (32°F) or
above 50°C (122°F).
1. Plug the USB connector on the base station into an available
USB port on your computer.
2. Insert the logger and the base station into the coupler, as
shown in the following diagrams.
For BASE-U-1, make sure that the logger is inserted in the
end of the coupler that has the magnet, and that the ridges on
the base station and logger are aligned with the grooves in the
coupler.
For BASE-U-4 or the HOBO Waterproof Shuttle, firmly insert
the optical end of the base station into the D-shaped end of the
coupler, and make sure that the ridge on the logger is aligned
with the groove in the coupler.
3. If you are using the HOBO Waterproof Shuttle, briefly press
the coupler lever to put the shuttle into base station mode.
4. If the logger has never been connected to the computer before,
it may take a few seconds for the new hardware to be detected.
5. Use the logger software to launch and read out the logger.
You can read out the logger or check its status while it continues
to log, stop it manually with the software, or let it record data
until the memory is full. Refer to the software user’s guide for
complete details on launching, reading out, and viewing data from
the logger.
Connecting to a tipping-bucket rain gauge
The logger’s black and white input wires can be connected
directly to the relay output of most tipping-bucket rain gauges.
(Polarity of the input connection is not important.) If your gauge
came with a counter display and battery, disconnect these and
attach the HOBO Pendant Event/Temp logger instead.
Be careful not to touch the logger’s input wires together when
connecting or disconnecting the logger while it is logging, as this
will record a false event.
LOGGER
COUPLER2-A
To BASE-U-4 or
HOBO Waterproof Shuttle
Coupler lever (for use with
HOBO Waterproof Shuttle)
Ridge side down
LOGGER
Magnet
Ridge
BASE-U-1 & COUPLER
