Vaisala vLog 4.4 - Manual (Page 49)

Veriteq vLog 4.4 User’s Guide
43
Mounting Data Loggers
Because they are small and light, you can easily mount Veriteq data loggers in
the field using a variety of techniques including Velcro strips, double-sided
tape, duct tape, and magnetic strips.
In harsh environments, place the data logger in a standard industrially-rated en-
closure, and run external sensors and probes from the enclosure using special
fittings in the openings.
Some tips for placing the data loggers:
Ventilation: Don’t obstruct the air passage holes in the logger. There should be
a clear path for the air to get to the internal sensors (if they are used or availa-
ble).
Vibration: Excessive vibration can knock the unit off its mounting. If the lo-
cation is subject to excessive jarring or vibration, mount the logger more se-
curely.
Temperature: Excessive temperature (low or high) can affect adhesives.
Moisture: Moisture can also affect the adhesive durability.
Permanence: Make sure the mounting location is permanent for the duration
of the recording period.
Public access: If the logger location is too visible, people may interfere with
the readings. Make sure it is not too accessible.
Using External Temperature Probes
Veriteq (VL- and SP-) 1000, 1016, 1400, 1416, and 1700-series data loggers
have external temperature channel(s) for use with an external temperature
probe. Using the external temperature probe enables you to collect data from
hard-to-get-at locations, such as in duct work or under pipe insulation.
You can use an external temperature probe with these data loggers, provided
the probe was calibrated with the data logger.
To use an external temperature probe:
1. Enable the desired channel on the logger (see Enabling and Disabling Log-
ger Channels on page 35). If you do not need to monitor from the internal
temperature sensor, disable it to conserve memory.
Note: You can disable most unused channels - external probe or not - to
save data logger memory. One exception is the internal temperature
channel on VL-1700 and SP-1700 data loggers.