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www.us-tech.com
July, 2011 Heidenhain: RSF Open Linear Encoder
Tarsdorf, Austria — A new open linear encoder (no housing on scale) equipped with a unique integrated mounting
control is now available from RSF. Called the MS 25, this RSF encoder utilizes a tricolored LED directly at the
reading head enabling the user to gage if the mounting and subsequent meas- urement readings are optimal. It is available in North America through Heidenhain Cor por ation. Common applications for open linear encoders are stages for medical and semiconduc- tor machines, as well as miscellaneous metrology applications. Open, non-contact linear en -
coders are increasingly being used in measurement applications that re - quire higher traversing speeds and operating cycles, as well as lower mechanical backlash and zero fric- tional force induced by an encoder. The RSF MS 25 linear encoder fits this bill and offers permanent control of the scanning signals over the whole measuring length. The use of the tricolored LED allows for easy mounting since no test box or oscillo- scope is needed, and is helpful for quick troubleshooting during opera- tion. The encoder utilizes a special single-field scanning principle which allows for high traversing speeds (up to 10 m/s), large mounting tolerances and insensitivity to contamination on
the scale. Integrated into the head of the encoder is a wide range of inter- polation electronics enabling resolu- tions from 10µm to 100nm.
Open linear encoder. Two end-of-travel op tical switch
signals are also available directly out of the reader head. The end-travel signal locations can be easily set by the user.
Contact: Heidenhain Corp., 333
E. State Parkway, Schaumburg, IL 60173 % 847-490-1191 fax: 847-490-3931 E-mail:
info@heidenhain.com Web:
www.heidenhain.us
See at Semicon West Booth 1618.
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Evergreen Introduces Wearable Instruments
Phoenix, AZ — Evergreen Telemetry has introduced a new type of portable instrument, one that saves consider- able field technician time. A vast improvement over typical
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“handheld” meters, the instrument is actually “hands-free.” The company offers a family of unique battery-oper- ated probes that are designed to be placed precisely at or on the point of interest. A tiny probe —less than 2-in. (5.1cm) on a side — can be clipped to the vanes of a ceiling diffuser and make a temperature and humidity measurements every two seconds. The technician wears a display on his wrist that shows the results in real time. This instrumentation eliminates
the time wasted by typical measure- ment practices in which a technician holds a meter in one hand and a probe in the other. He makes a measure-
ment at the point of interest and detects a problem. He moves to the fan or damper or other control point and makes an adjustment. Then he returns to the point of interest and makes another measurement to deter- mine if the adjustment was successful. Much time is wasted, especially if the control point is far from the point of interest, which is common.Wireless modules transmit results across the room or across the building, through walls, ceilings, and other obstacles. The instrument is worn on the
user’s arm where it is easy to see and store the measurements while leav- ing the technician’s hands free to drill a hole or adjust a lever. Even the storing of readings is hands-free — a slight squeeze of the user’s thumb against another wearable module, the Thumbswitch (patent pending), stores the current reading. Up to 20,000 measurements can be stored with time stamps, and uploaded to a PC spreadsheet.
Telemetry receiver, to be worn on the technician’s wrist.
The Wrist Reporter can display
four readings simultaneously from four different sensing probes. Two or more technicians can wear Wrist Reporters to share data, even when in different rooms. Contact: Evergreen Telemetry, 3217 E. Shea Blvd., #478, Phoenix, AZ 85028 % 602-574-6192 E-mail:
Pete.secor@
evergreentelemetry.com Web:
www.evergreentelemetry.com
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