Tachometer Features: This Digital Tachometer provides fast and accurate Non-contact RPM and surface speed measurements of rotating objects. This tachometer is used the CPU technique, photoelectrical technique, and junction laser technique for one instrument combined PHOTO TACH. (RPM&REV) Two test modes: rotate speed mode (unit: RPM) & count mode (unit: REV). Wide measure range and high resolution. High visible digital LCD and Backlight display. Built-in memory recalls Max Min and Last value stored. Specifications: Display : 5 digits LCD display Detecting Distance : 50mm to 500mm Accuracy : (0.05%+1 digits) Time Base : Quartz crystal RPM Test Rang : 2 to 99,999RPM Power Consumption : Approx 45mA Count Rang : 1 to 99,999 REV Power Supply : 9V Battery or 6V Exterior DC Resolution : 0.1 RPM (2 to 999.9 RPM) Operation Temp. : 0C to 50C 1 RPM. (over 1000 RPM) Dimension : 160mm 58mm 39mm Sampling Time : 0.5 sec. (over 120 RPM) Weight : 151g. Measuring Manual Apply a reflective mark to the object being measured. Depress the MEAS button and align the visible light beam with the applied target. Verify that monitor indicator lights when the target aligns with the beam. Then the current mode is the last time mode. If you need to change the mode, release the MEAS button and press the MODE button before the instrument auto power off(released the MEAS button this instrument will auto power off in 10 sec) will converted between RPM and REV(revolution). Selected the mode of you need, depress the MEAS start measures. Press the MEM button can reading the Max, Min and Last value of last time measuring. Measuring Consideration Reflective mark Cut and adhesive tap provide into approx 12mm (0.5) squares and apply one square to each rotation shaft (a) The non-reflective area must always be greater than the reflective area. (b) If the shaft is normally reflective, it must be covered with black tape or black paint before attaching reflective tape (c) Shaft surface must be clean and smooth before applying reflective tape. Very Low RPM Measurement As it is easy to get high resolution and fast sampling time, if measuring the very low RPM values, suggest user to attach more REFLECTIVE MARKS averagely. Then divide the reading shown by the number of REFLECTIVE MARKS averagely. Then divide the reading shown by the number of REFLECTIVE MARKS to get the real RPM. Part Number Table Description Part Number Tachometer, Digital AT6 Page <1> 15/07/13 V1.0X-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Standoffs & Spacers category: Click to view products by Unbranded manufacturer: Other Similar products are found below : M0513-3-N M0516-3-N M0517-3-N M0518-3-N M0521-3-N M0524-3-N M0532-35-AL M0532-35-N M0543-4-AL M0544-35-N M0544- 3-N M0545-3-AL M0553-3-N M0564-4-N M0608-5-SS M0609-5-SS M0610-35-AL M0613-3-N M0651-5-SS M0653-35-N M0654-4-SS M0655-5-AL M0655-5-N M0660-4-AL M0660-4-N M0670-35-N M0671-5-N M0671-5-SS M0722-5-N M0725-6-N M0731-4-N M0904- B-25-AL M1273-2545-AL M1273-3005-AL M1303-3506-AL M1307-3506-AL M1313-3005-N M1313-4007-AL M1314-3005-AL M1314- 3005-SS M1315-3005-SS M1315-4007-N M1317-3506-AL M1317-4007-SS M1318-3005-SS M1320-3005-AL M1320-3005-N M1321- 3005-SS M1321-4007-AL M1322-4007-N