RPM Meter Digital RPM Meter Reasonable Circuit Instrument Display For Industry

RPM Meter Digital RPM Meter Reasonable Circuit Instrument Display for Industry Specification: Features: Digital meter adopts new A/D conversion chip and high stable benchmark IC. Use mount components circuit design is reasonable. Can be applied to measure voltage current also can connect to external sensor to measure temperature pressure displacement and other parameters. Easy installation appropriate for use as all kinds of digital instrument display. stability high measurement strong anti-jamming capability. Specifications: Input Pulse Signal: NPN open collector contact switch contactless switch level pulse Input Signal Voltage: -30V-0.6Vlow level; 4-30Vhigh level Measure Frequency Range: 9999Hz 999.9hz 99.99khz automatically switchable . Input Frequency: 10KHz/100khz/300khz Measure Accuracy: ?0.1%?1digit Display: 0.56 green LED Display Rate: >3times/second Power Supply: DC8-24V 30mA Size: 8x4.2x2.6cm/3.14x1.65x1in Mounting Size: 8x3.9cm/3.14x1.53in Over Range Display: The first digit displays 1 or -1 other three digits no display Note: 1 Connect wires correctly according to the wiring diagram. 2 Strong electromagnetic interference should be avoided measuring had better to be shielded cable or twisted-pair cable. 3 Counting signal and reset signal input switch or circuit should be near the counter terminals making signal cables as short as possible. 4 Avoid wiring in same tube or twisted with high voltage electric wire or power wire in order to avoid unnecessary interference. If necessary please use shielded cable shielding layer on the counter terminal + . 5 Mechanical switch or microswitch is not recommended because of their relatively short life may cause mistakes after long time use.If using mechanical switch or microswitch please try to use ones of better quality in order to avoid error count. It is strongly recommended to use magnetic control switch. Package Includes: 1 x RPM Meter 1 x Hall Switch Sensor 1 x Cable