Digital Tachometer ONO SOKKI HT 4200

Non contact type handheld digital tachometer. Affix one of the reflective marks to the rotating surface of the target measurement object and then aim the red visible ray at the mark. If multiple marks are affixed to the target of measurement object measurement can be performed at a lower speed. FEATURES The 5 digit display enables wide ranging measurement from 4 r min when multiple reflective marks are used. to 50 000 r min when single reflective mark is used. A large size display device 10.5 mm character height is incorporated into the compact lightweight device which can be easily slipped into your shirt pocket. Built in convenient memory function for easy confirmation of the measured results Even shiny shafts can be measured by using the reflective marks provided with the device. Measurement can be performed over a wide range from 30 r min to 50 000 r min in 1 r min resolution when one reflective mark is used . Measurement can be performed safely at a distance ranging from 20 to 300 mm between the detection unit and the target measurement surface the reflective mark surface . The latest measurement value continues to be displayed for approximately 30 seconds even after the power has been switched off. Battery replacement time indicator is provided SPECIFICATIONS Detection method Red visible ray photoelectric reflection method Detection distance 20 to 300 mm Display 5 digit LCD 10.5 mm character height fixed measurement unit r min Measurement update time 1 s automatic update 2 s update when the circumferential speed is lower than 60 number of reflective marks r min Measurement range Measurement resolution 1 r min The affixing of multiple reflective marks enables measurement of lower rotation speeds. Measurement speed Number of reflective marks 30 to 50 000 r min 1 15 to 25 000 r min 2 10 to 16 667 r min 3 8 to 12 500 r min 4 5 to 8 333 r min 6 4 to 6 250 r min 8 Measurement accuracy when one reflective mark is used 30 to 12 499 r min speeds Within 1 r min 12 500 to 24 999 r min speeds Within 2 r min 25 000 to 50 000 r min speeds Within 4 r min Measurement of the number of pulses The number of reflective marks used can be specified in order to perform measurement from lower rotation speeds. Specifiable values 1 2 3 4 6 8 P R Memory function 10 data can be memorized. Data hold function Auto power off when 30 seconds have elapsed after the end of measurement. Low battery indication The LOW mark is displayed when the battery voltage falls below 3.3 V. Over range display An ERROR mark is displayed. Power source Three AAA type batteries 1.5 V Continuous measurement time Approx. 20 hours when alkaline batteries are used at 20 C Operating temperature 0 to 40 C Storage temperature 10 to 55 C Outer dimensions 62 W x 129 L x 26.4 D mm Weight Approx. 130 g including batteries ACCESSORIES Reflective marks 1 sheet 25 marks AAA type batteries 3 pieces User s manual 1 copy Peripherals sold separately HT 011 Reflective marks The recurrent reflectors incorporated in the reflective marks make them optimal for use with the HT 4200 and HT 5500 models. 12 mm x 12 mm size 25 marks per sheet 10 sheets per pack