Campbell Scientific A150 A150 Desiccated Case - 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. Lid Chassis Cable Gland Mounting Bracket 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. 1