TRUBLUE USER’S MANUA
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Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS
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TRUBLUE USER’S MANUA
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08/2016
Page 11
7. Sealed Construction
Because of the TruBlue data logger’s sealed design (which improves durability by eliminating moisture
intrusion), the unit’s batteries cannot be removed, replaced or recharged. The two 3
-volt lithium ion
batteries that are built into the unit will last more than 5 years when logging 1 reading every 15 minutes.
For applications where data must be recorded at a higher frequency we offer additional Auxiliary Battery
Packs and Backshells as accessories. The Auxiliary Battery Pack provides an additional 7.2V Lithium
battery that is field installable and replaceable. To accommodate the additional battery pack, Auxiliary
battery pack backshells are offered in both 316 Stainless Steel and Titanium.
8. Internal Clock Synchronization
When received from the factory, your TruBlue data logger’s internal calendar/clock will be set to Eastern
Standard Time. The internal clock can be quickly and easily synchronized to your local clock and time
zone using TruWare. Please refe
r to the TruWare User’s Manual for details.
9. General Field Installation
The TruBlue is calibrated for operation in a vertical, upright position with the cable extending up. Although
it may be operated in any orientation, anything other than this vertical position will result in a slight zero
offset in the measured data. If the data logger will be operated in a known, non-vertical orientation this
zero offset error may be easily calibrated out.
10. Cable Protection
•
Cable damage is one of the most common causes of vented data logger failure. Here are a few
precautions you should take in order to extend the life of your TruBlue data logger:
• When working with your data logger cable, make sure the cable does not drag over sharp edges. This
could nick or cut the cable outer jacket. A cut in the outer jacket could allow water into the data logger
electronics causing permanent damage.
• Our polyurethane jacketed cables are quite flexible; however, care needs to be taken to avoid crimping
the vent tube inside the cable when bending the cable to suit your installation. To avoid this, do not bend
your cable tighter than a radius of 3 inches.
• If you use a compression fitting or strain relief to secure the cable as it enters a junction box, be careful
not to over-tighten the fitting to the extent that it damages the cable or crushes the internal vent tube.
WARNING.
Crimping the vent tube with tight bends or crushing it within the cable can block the
reference pressure port of the water level data logger. This will prevent the reference from
registering atmospheric or temperature-related pressure changes, resulting in measurement
offset errors
