Reference Line Support - Teledyne TIENet 350 Installation And Operation Manual

TIENet® Model 350 Area Velocity Sensor
Section 2 Installation
2.2 Reference Line
Support
Adding Length Between
Signature and Sensors
Distance of 100 Feet or
Less
Distances Greater than 100
Feet
2-2
The optional water-tight Signature
Expansion Box enables a variety of
configurations for adding length, as
well as connecting multiple devices
at once. The Expansion Box con-
nects to a TIENet™ terminal strip
in the Signature, and contains
three additional strips inside, as
well as a TIENet connection for an
option card.
Distance can increased by installing the Expansion Box closer to
the field-mounted TIENet device(s) and adding a custom-length
TIENet cable between the box and the Signature. The maximum
recommended distance between system components is 305
meters (1,000 feet). Longer distances may result in signal degra-
dation and drops in voltage.
The un-vented TIENet expansion
box can be used if the total distance
is 30.5 meters (100 feet) or less. The
Signature's air system will nor-
mally supply adequate desiccated
air through the TIENet cable air
line to the interior of the expansion
box. This means the 350 AV sensor
is referenced at the Signature's
installation location.
If the total distance is greater than
30.5 meters (100 feet), or a different
reference location is required, the
reference air line must be vented
outside the expansion box. The
TIENet expansion box with ref-
ere nce air is desig ned for this
p u r po s e . T h e d es i c c a t o r t u b e
mounted on the side vents dried air
to its interior.