Background-suppressed photoelectric sensors use time-of-flight
Reliable background suppression and colour-independent detection with switch point setting to the nearest centimetre are the outstanding features of the new OID and O5D photoelectric sensors from ifm electronic. The PMDLine sensors even detect shiny surfaces such as stainless steel without difficulty. Both the OID and O5D will sense an object at a distance of 2m, even against a background, and as such could be used to replace retro-reflective sensors.
These new developments employ time-of-flight measurement to combine the advantages of long ranges, reliable background suppression, visible red light and high excess gain in one unit. In the same price range as conventional sensors, the O5D and OID are clever alternatives to normal sensors at no extra cost.
Another advantage is its ease of use and switch point setting to the nearest centimetre. The O5D features “+/-” buttons and a display, while the OID can be set with a simple turn of the setting ring. A scale shows the distance set, in centrimetres or inches. The switch point can thus be set prior installation.
Shiny, matt, dark or light objects of any colour – the O5D/OID sensors always ensures optimum background suppression. The technology allows any angle of incidence, providing high flexibility of installation. The sensor is also IO-Link enabled, e.g. for reading the current value. These experts set the bar high for conventional sensors.
The O5D is supplied as a classic rectangular photocell, while the OID is in an M30 housing. Both are designed for DC PNP operation, with both open and closed outputs available via the industry-standard M12 connector.
ifm is committed to working closely with its customers to develop products which precisely match their needs, and the company provides expert, readily accessible technical support to help users maximise the benefits they gain from ifm products.
For further information, contact Gemma Anderson, ifm electronic Ltd., efector House, Kingsway Business Park, Oldfield Road, Hampton, Middlesex, TW12 2HD. Telephone: 020 8213-0000. E-mail – gemma.anderson@ifm.com.
Universal sensor
The latest generation of inductive proximity switches from sensor market leader ifm electronic is ready for a wide range of applications. Characterised by wider operating temperatures and ultimate sealing the new range, known as NT, are designed for use where up to now standard sensors would be hard pressed to survive.
ifm’s new NT range of inductive sensors will work in oils and coolants, as well as generally wet areas, as they are fully tested to IP 65, IP 66, IP 67, IP 68 and IP 69K for maximum reliability.
Not content with the seal, ifm understands proximity sensors like no other, so has designed this new range to operate at 40 ° below zero, or up as high as 85 °C. This wide temperature range means application in cold stores or on mobile machinery can be handled with ease.
New manufacturing methods are employed in the construction of the NT, permitting tighter tolerances in performance, thus enhanced reliability for machine operators.
The NT range has started with 60mm long connector versions of standard M12, M18 and M30 housings, flush or non-flush, pnp or npn, all with industry-standard M12 connection. Further units are under development.
ifm is committed to working closely with its customers to develop products which precisely match their needs, and the company provides expert, readily accessible technical support to help users maximise the benefits they gain from ifm products.
For further information, contact Gemma Anderson, ifm electronic Ltd., efector House, Kingsway Business Park, Oldfield Road, Hampton, Middlesex, TW12 2HD. Telephone: 020 8213-0000. E-mail – gemma.anderson@ifm.com.
ATEX 3D sensors up to scratch
Range of sensors from ifm electronic complies with the latest requirement.
The possibility of residual dust build up, leading to a low-level risk of explosion is quite prevalent in many industries. Areas where this risk is identified should be classified as a Zone 22, requiring ATEX Equipment Category 3D for any control products in use where the risk is present. To comply with the requirements for 3D, sensors and other products must now comply with a standard such as IEC60079-31. [While other protection concepts are available, for Zone 22 equipment, rugged, dust-tight enclosure is the most appropriate for sensors].
The new range of ATEX 3D inductive and capacitive sensors from ifm electronic is fully compliant. This is no mean feat, as the requirements for IEC60079-31 are greatly enhanced in comparison with earlier standards.
In order for the manufacturer to certify products to IEC60079-31, sensors must be tested to withstand a 4 Joule impact (ten times the previous requirement) even if the operator takes precautionary measures when fitting them. This is made harder by the fact that plastics must be conditioned, i.e. artificially aged, before the impact test. After the impact test, sensors must maintain their design IP rating.
ifm electronic now offers inductive sensors in M12, M18 and M30 threaded housings, and common rectangular sizes, plus capacitive in M30 and rectangular. Versions exist for DC or AC operation.
Some of the most rugged sensors on the market are the result, with other uses beyond ATEX Zone 22. It is believed that not many sensor manufacturers offer such a range of inductive and capacitive proximity sensors that complies with the current standards.
ifm is committed to working closely with its customers to develop products which precisely match their needs, and the company provides expert, readily accessible technical support to help users maximise the benefits they gain from ifm products.
For further information, contact Gemma Anderson, ifm electronic Ltd., efector House, Kingsway Business Park, Oldfield Road, Hampton, Middlesex, TW12 2HD. Telephone: 020 8213-0000. E-mail – gemma.anderson@ifm.com.
