Quick Start for the HOBO® Micro Station (H21-USB)
20874-D MAN-QSG-H21-USB
1
Install the batteries.
Open the logger door and insert four AA batteries observing polarity.
2
Plug in smart sensors and install the rubber cable channel.
Important:
Proper installation of the rubber cable channel is required for outdoor and weatherproof deployments and in
harsh indoor environments.
a.
Remove the rubber cable channel making note of how it is oriented.
b.
Plug the smart sensors into the connectors. When using multiple smart sensors, it is easiest to start by plugging one into
the leftmost or rightmost connector and then working your way across the connectors in order.
c.
Lightly coat each smart sensor cable with a small amount of silicone grease (about the size of a pea). Only the portion of
the cable that will be in the channel needs to be greased. Also lightly coat the bottom and two sides of the cable channel.
d.
Place the cables in the cable channel. There is a break in the rubber above each hole to guide the cable into the hole.
Make sure the cable channel is oriented with the breaks pointed up and the key pointed down and closer to the sensor
connectors to ensure proper reinstallation in the next step. Slightly bend the ends of the channel to reveal the breaks and
push the cable into the hole that lines up with the corresponding sensor connector. Repeat for any additional sensors.
e.
Reinstall the cable channel making sure the key on the bottom is inserted in the notch in the logger enclosure pointed
out in the diagram above. Once the cable channel is properly seated, the top will be flush with the edge of the logger
enclosure. Adjust the cable slack as necessary so a minimum amount of cable is inside the case as shown below.
f.
If you will be using less than five smart sensors, use the rubber plugs to fill any empty holes in the cable channel. Lightly
coat the rubber plugs with a small amount of grease. Insert the thin part of the plug into the hole. While pulling the thin
end of the plug from the inside of the case, push the other end of the plug from the outside until the thick part of the
plug fills the hole.
Rubber cable channel
When properly installed, the
cable channel will be flush with
the edges of the logger enclosure
Notch where the key on the bottom of
the cable channel is installed
Insert thin end of plug into any
empty holes in cable channel
