Tachometer, Meter Digital Tachometer, 4 Digital LED Display Tachometer + Hall Proximity Switch Sensor NPN, Red/Blue (Blue)
Tachometer, Meter Digital Tachometer, 4 Digital LED Display Tachometer + Hall Proximity Switch Sensor NPN, Red/Blue(Blue)
Technical data: Measuring accuracy: ± 0.1% Display mode: 0.56" LED display refresh rate: & gt; 3 times/sec Working power supply: DC8-24V, 30mA, measuring range: 10-9999RPM Hall proximity switch: magnetic Appearance size: 80 x 42 x 25mm / 3.14 x 1.65 x 0.98 inch LED display (optional): red, blue Weight: 80g (red), 105g (blue) Overrange display: The first one shows "1" or "-1" and the last three do not Precautions: 1 .Connect the plug correctly according to the wiring diagram 2. Should avoid strong electromagnetic interference and it is better to use shielded cable or double stranded wire for measuring conductors 3. The counting signal of the counter and the switch of the zero clear signal input or circuit must be as close as possible on the terminal of the meter to make the signal line as short as possible4. Avoid with others such as: high voltage cables or power cables and so on with the same tube or twisted wire to avoid unnecessary interference. If necessary, please use the shielded wire Terminals 5. It is not recommended to use a mechanical switch or micro switch because they have a relatively short lifespan and may be accidentally counted after a long time. If you use a mechanical switch or micro switch , please try to use better quality so as not to count incorrectly, and strongly suggest a magnetic switch Package included: 1 x Tachometer 1 x Hall NPN Proximity Sensor
Product Features
- Good stability, high precision and strong anti-interference ability
- The external appearance adopts standard size and convenient to install
- Input pulse signal: NPN / PNP open collector , contact switch, contactless switch, level pulse
- Input signal voltage: low level: -30V -0.6V, high level: 4-30V
- Measuring range: frequency: 9999Hz, 999, 9 Hz, 99.99 kHz, automatic switching