CWB100

The CWB100 is the master radio you use in a Campbell Scientific wireless-sensor network. It polls and stores data from up to 50 wireless sensors, and then passes that data to a data logger. Its internal radio has a 902 to 918 MHz frequency range, which is used in the US and Canada.

The CWB100 base station is configured using an A205 CWS to PC Interface and Campbell Scientific’s Wireless Sensor Planner, Network Planner or Device Configuration Utility software. The data logger is programmed to interface with the CWB100 and determine a polling interval. After the polling interval has been received, the base station uses that information to poll the sensors prior to being polled by the data logger.

Why Wireless?

There are situations when it is desirable to make measurements in locations where the use of cabled sensors is problematic. Protecting cables by running them through conduit or burying them in trenches is time consuming, labor intensive, and sometimes not possible. Local fire codes may preclude the use of certain types of sensor cabling inside of buildings. In some applications measurements need to be made at distances where long cables decrease the quality of the measurement or are too expensive. There are also times when it is important to increase the number of measurements being made but the data logger does not have enough available channels left for attaching additional sensor cables.