Campbell Scientific A150 Desiccated Case - Manual (Page 5)

A150 Desiccated Case
1. Function
1.1 Typical Applications
The A150 desiccated case is a small, self-contained junction box that allows a
sensor to be connected to a continuation cable, a PWENC connector, or a
CWS900 wireless sensor connector. Utilizing the A150, a sensor may be
incorporated into a wireless sensor network or may be attached to a prewired
enclosure.
Mounting Bracket
Cable Gland
Chassis
Lid
FIGURE 1. A150 Desiccated Case
The A150 allows the CS450 and CS455 pressure transducers to be used
without the need to run a ventilation tube all the way to a datalogger enclosure.
The sensor cable with a ventilation tube terminates at the A150, which contains
a small vent and desiccant, while a second cable without a ventilation tube
completes the connection to the datalogger.
The A150 provides a way for a sensor to be included in a wireless sensor
network. The sensor is attached to the A150 junction box, and a second cable
attaches the A150 to a CWS900 wireless sensor interface. This allows the
sensor more flexibility and range than it would have if it were wired directly to
a datalogger.
1.2 Compatibility
As a junction box, the A150 is compatible with most sensors using six wires or
less. Sensors with multiple ground wires can use the included 5-position lever
nut to combine the grounds into a single wire connection.
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