CTC Switch Boxes are a premium solution to store cable terminations and provide easy access for data collection. Switch boxes provide a switched output, meaning that the analyst will connect their data analyzer to a single connector on the front of the box. There is a dial (or "switch") on the front of the box that is used switch between sensors for each reading.
The iBox family of products has quickly become a favorite amongst CTC customers. It features an IEPE bias indicator light on the front panel as well as a convenient flip down panel to organize and hide wiring. The bias indicator light enables the analyst to check the connection of the sensor prior to taking readings. When power is sent to the sensor through the data analyzer, there is a settling time (or turn on time). This settling time is typically just a couple seconds, but you do not want to take a reading before the sensor is fully settled to ensure accurate data. The indicator has LED lights for green (good to take a reading), yellow (wait to take a reading), and red (which indicates that there may be an issue with the connection or a short).
CTC's SB Series are a tried and true, legacy offering beloved by CTC customers for over 20+ years. These switch boxes come in single axis and dual input & output options, and come equipped with online expansion jacks for continuous output.
When utilizing switch boxes, there is often only one output. In the case of individual BNC junction boxes, the individual outputs may slow your routine data down. CTC’s SB152 offers a bridge between these two use cases, with both a switched (BNC or 2 pin MIL) output for routine data, and individual BNC’s for each channel in the same box.
Therefore, when taking your routine data, you can use the switched output for efficiency, and should you need to dive into advanced diagnostics on the machine, you can easily perform cross-phase measurements from the individual BNC outputs provided!
This interface can also allow 2 measurement locations for 2 plane balancing, some collectors may be able to power a permanently mounted tachometer (usually a hall-effect proximity switch) to acquire all the balancing data directly from the switch box in enclosed fans such as Air Handling Units, where running cables out can be difficult or unsafe.