RC171

Product Data Sheet PHILTEC, Inc. Sept 2006 Fiberoptic Sensor - Reflectance Compensated* Model RC171 Fiberoptic Cable & Sensor Tip - Actual Size For The Measurement of Distance, Displacement and Vibration Features • Reflectance Compensated Output • 4.3 mm Diameter Spot Size (0.171inch) • 12.7 mm Operating Range (0.50 inch) • 0.6 mv/µm Sensitivity (14 mv/mil) Tip & Cable Dimensions A B C Tip Detail Typical RC Model 5 ØC Side-by-Side Fiberoptics 4 3 2 1 0 0 10 20 30 40 50 Increasing Gap FEATURE Tip Outer Diameter, Ø C Fiberoptic Diameter Tip Length, C Collar Length, B Collar Diameter, Ø B Cable Length, A Cable Diameter, Ø A Cable Min. Bend Radius mm 4.75 4.34 38.1 15.9 7.92 91 6.86 29 inch 0.187 0.171 1.5 0.625 0.312 36 0.275 1.125 *These are reflective type transducers based upon detecting the intensity of reflected light. RC Model sensors have a pair of adjacent fiberoptic detectors in the sensor tip. Light reflected off the target follows two separate paths back to the electronics where a ratiometric calculation provides the distance measurement which is independent of varying surface reflectance; i.e., reflectance compensated. Volts PHILTEC www.philtec.com Precision Dynamic Measurements Two Instrument Packages To Choose From This sensor can be provided as an analog or as a digital instrument. For available options and how to order go to www.philtec.com A nalog sensors are fast responding units ideal for relative motion measurements in dynamic applications: • DC-20 KHz is standard • DC-200 KHz or higher is optional • DC-100 Hz provides best resolution Standard analog units include: • Electronics with 0 to +5 VDC output • 3 foot long fiberoptic cable 5.028 (127.7) 4 Slots 0.157 x 0.375 (4 x 9.5) isplacement Measurement Systems (DMS) are the best choice for absolute distance measurements, multiplexing and process control applications, with data rates up to 5,000 readings/second. Two sizes are available: Standard DMS units include: • Electronics with RS-232 communication • Keypad/LCD for local operation 6.5 (165) 0.190 (4.8) 4 Places 4.0 (101.6) 3.5 (88.9) DMS DIMENSIONS inches (mm) D Features ANALOG RC 3.24 (82.4) AMPLIFIER • Reflectance Compensated Output 2.15 (54.6) DIMENSIONS • Largest Standoff ininches (mm) Series the RC • 14 mm Operating Range (0.550 inch) • 600 mv/mm Sensitivity (16 mv/mil) 4.36 (110.8) • 10 mm Standoff Distance (0.400 inch) 0.063 (1.6) 5.48 (139.2) 6.0 (152.4) 0.125 (3.2) 2.25 (57.2) 1.87 (47.6) 7.0 (177.8) ANALOG OUTPUT A calibration chart is provided with each sensor tip giving the voltage output response to distance. There are three ways to derive accurate distance measurements: a) within the bounds of the linear range, multiply sensitivity by the change in voltage output b) create a lookup table using the XY calibration data points c) use a polynomial curve fit to accurately map the sensor’s output function Mini-DMS units are full-featured for PC operation only, they are not equipped with keypad/display. 5.07 (129) .157 x .375 (4 x 9.5) 1.4 (35.6) mini-DMS DIMENSIONS inches (mm) 2.38 (60.5) 4.39 (112) SENSOR TIP ALIGNMENT 0.063 (1.6) 5.52 (140) 1.28 (32.6) RC sensors have adjacent fiber bundles in the face of the sensor. An alignment flat is provided on the casing to aid with alignment. The flat is ground parallel to the split between the adjacent fiberoptic bundles, and located on the light transmitting side. DIGITAL OUTPUT DMS units provide distance output via RS232. Gap calibration data is stored on board DMS units. They provide accurate distance measurements over the sensor’s entire operating range using a 24 bit internal lookup table. They have storage capacity for many additional calibrations. PHILTEC, INC., ANNAPOLIS, MD USA 410-757-4404 800-453-6242 e-mail sensors@philtec.com PHILTEC Model RC171 Typical Response 5 4 3 Volts 2 SENSITIVITY = 500mv/mm 1 0 0 2 4 6 8 10 12 Gap, mm Conversions: 1 micron = 39.37 microinch 1 mm = 39.37 mils 1 mil = 0.001 inch = 25.4 microns = 0.0254 mm Standard Specifications - RC171 Electronics Analog Light Source Input Voltage Input Current Bandwidth Isothermal Drift Fiberoptics Light Beam spread Cable Sheathing Tip Material Tip Epoxy Outgas Tip Operating Pressure Tip Operating Temperature 25° PVC over Steel Monocoil 300 Series SS 0.3% @ 200°C 2.4% @ 300°C 35 bar -55 to 175°C continuous; to 350°C intermittent 1-2 hours Outputs Analog Voltage Total Range Linear Range Nominal Standoff Nominal Sensitivity Resolution* DC - 200KHz DC - 20 KHz DC - 100 Hz 0.50 in. 160 mils 220 mils 14 mv/mil 600 μin 300 μin 100 μin 12.7 mm 4 mm 5.6 mm 0.6 mv/μm 15 μm 7.5 μm 2.5 μm Total Range Distance Reflectance Amplifier Temperature Resolution* Pk-Pk Units at Mid Range using 50% Signal Power DMS DMS RS232 12.7 mm 23 bit resolution 8 bit resolution 12 bit resolution ADC AVG = 2 pk-pk = 2.5 μm ADC AVG = 16 pk-pk = 2.3 μm ADC AVG = 256 pk-pk = 0.5 μm ADC AVG = 4096 pk-pk = 0.05μm LED, 850 nm +12 to +24 VDC 125 ma max DC-20 KHz 3 db down +12 VDC 500 ma max 5 KHz max 0.5% 0.05% *These specifications represent best case performance where: the target is flat, smooth and highly reflective, the sensor is perpendicular to the target, the sensor is gapped to its range of highest sensitivity, fiberoptic cable lengths are standard and the cables are not connectorized. Custom Hardware To Customer Specifications PHILTEC, INC., ANNAPOLIS, MD USA 410-757-4404 800-453-6242 e-mail sensors@philtec.com