HOBO Pro v2 User’s Manual
2
Materials
All models: ASA styrene polymer housing and mounting clamp; polypropylene protective cap; Buna-N o-ring(s);
U23-001, U23-002 only: ASA styrene polymer RH sensor cap; modified hydrophobic polyethersulfone membrane
Cables
U23-001: No cables
U23-002: One 184 cm (6 ft.) PVC cable; sensor diameter 1 cm (0.38 in.)
U23-003: Two 184 cm (6 ft.) PVC cables; sensor diameter 0.5 cm (0.20 in.)
U23-004: One 184 cm (6 ft.) PVC cable; sensor diameter 0.5 cm (0.20 in.)
Environmental rating
Electronics housing is NEMA 6P equivalent (tolerant of brief submergence);
Units with RH sensors are NEMA 4 equivalent (splash-resistant)
Launch modes
Immediate start; delayed start
Logging interval
Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from
1 second to 18 hours (refer to HOBOware software manual)
Offload modes
Offload while logging; stop and offload
Battery indication
Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
Weight
U23-001: 57 g (1.5 oz); U23-002: 118 g (3.1 oz); U23-003: 138 g (3.7 oz); U23-004: 102 g (2.7 oz)
Dimensions
Housing measures 10.2 × 3.8 cm (4.0 × 1.5 in.)
NIST certificate
Temperature certificate available for additional charge
The CE Marking identifies this product as complying with the relevant directives in the European Union (EU).
Accessories available
•
RH sensor replacement kit for U23-001
(Part # HUM-RHPCB-1)
•
RH sensor replacement kit for U23-002
(Part # HUM-RHPCB-2)
Connecting the logger
The HOBO Pro v2 requires a coupler (Part # COUPLER2-E)
and USB-Optic Base Station (Part # BASE-U-4) or HOBO
Waterproof Shuttle (Part # U-DTW-1) to connect to the
computer.
1.
Install the logger software on your computer before
proceeding.
2.
Follow the instructions that came with your base station or
shuttle to attach the base station or shuttle to a USB port on
the computer.
3.
Make sure the logger’s communications window is clean and
dry. (Use a clean, nonabrasive cloth, if necessary.) If the
logger is damp, wipe off excess moisture.
4.
Attach the coupler to the base station or shuttle, then insert
the logger into the coupler with the ridge on the logger
aligned with the ridge on the coupler.
5.
If you are using the HOBO Waterproof Shuttle, briefly press
the coupler lever to put the shuttle into base station mode.
6.
If the logger has never been connected to the computer
before, it may take a few seconds for the new hardware to be
detected by the computer.
7.
Use the logger software to launch the logger, check the
logger’s status, read it out, stop it manually with the software,
or let it continue to record data until the memory is full. Or,
use the HOBO Waterproof Shuttle to read out and relaunch
the logger in the field.
Refer to the software user’s guide for complete details on
launching, reading out, and viewing data from the logger.
Important: USB communications may not function properly
at temperatures below 0°C (32°F)
or above 50°C (122°F).
Note:
The first time you launch the logger, the deployment
number will be greater than zero. Onset launches the loggers to
test them prior to shipping.
