Sick's miniature capacitive sensor packs a big non-contact 'punch'

>The CQ4 has a rapid switching frequency up to 100 Hz and a sensing range of up to 8 mm, making it ideal for high-speed object detection through non-metallic surfaces.

>Explains Phil Dyas SICK (UK) industrial sensor specialist explains: "The CQ4 is no larger than a couple of cubes of sugar with the sensitivity and rugged construction to be used almost anywhere where you might have struggled to find the space to install a sensor before.

>"Because the CQ4 is a capacitive sensor with a range of up to 8mm through non-metallic materials, it can 'see' through packaging and you don't have to cut a hole in a pipe or vessel wall for example, so there are no sealing issues.  Often non-contact sensors are fastened with cable ties to a plastic pipe or a container wall and the CQ4 has a helpful mounting groove at the back to ensure the sensor remains securely in place.

>"At the same time it is easy to adjust the sensitivity and range for optimum detection performance, with a potentiometer control. The CQ4 is very easy to set up and commission and the wide choice of switching output options and connection configurations give the engineer plenty of scope for optimising selection to match the production specifications."

>The new SICK CQ4 capacitive sensor is contained in a 39.5 x 12 x16mm highly-durable fibreglass mounting with IP67 protection and the integral metal fastening threads ensure secure connection under industrial use conditions. With rapid 100Hz switching, it is able to provide real time detection to match application changes for precise production control and feedback.

>The CQ4 is simple to commission and the LED indicators in the housing provide clear status for voltage, switching output and short-circuit operation at all times. The range of versatile mounting brackets include floor, wall and a swivelling ball mount, and the combination of mounting options and switching options offer a choice of 12 versions to meet most plant requirements.