Campbell Scientific A150 A150 Desiccated Case - Page 6

A150 Desiccated Case NOTE It is not recommended to insert more than one wire into each connection on the terminal block. If it is necessary to combine wires, use the 5-position lever nut to combine the wires, and then insert the lead wire from the lever nut into the terminal block. When used with a CWS900, the sensor can be used with sensors measuring analog voltages, frequency, and pulse. The CWS900 can also provide excitation voltage to a sensor through the A150. Terminal Block Wire to Datalogger or CWS900 Lever Nut Vent FIGURE 2. A150 Interior 2. Physical Description The A150 has an 80 mm x 82 mm x 55 mm chassis. Four screws secure the lid to the rest of the unit. A terminal block is mounted inside the chassis. A small vent is located on the bottom of the chassis. The vent is protected by a GORE® filter, which prevents moisture and contaminants from entering the unit while equalizing the interior air pressure to the current atmospheric pressure. A mounting bracket is attached to the bottom of the chassis. The bracket is used to fasten the A150 inside an enclosure or, with the included Velcro® strap, to another location of the user's choosing. 2