DC 8-24V Digital LED Tachometers Tachometer with Hall Proximity Switch Sensor NPN 10-9999RPM
DC 8-24V Digital LED Tachometers Tachometer with Hall Proximity Switch Sensor NPN 10-9999RPM
Specifications: Measuring accuracy: ± 0.1%. Display mode: 0.56 inch LED. Display update rate: > 3 times/sec. Operating power supply: DC8-24V, 30mA, measuring range: 10-9999RPM Hall proximity switch: magnetic. Appearance size: 80 x 42 x 25 mm / 3.14 x 1.65 x 0.98 inches. LED indicator (optional): red, blue. Weight: 80 g (red), 105 g (blue). Over range display: the first display shows "1" or "-1" and the last three are not displayed Precautions: 1. If strong electromagnetic interference is to be avoided, it is better to use shielded wires or double wire wires to measure conductors 2. The counter signal and the switches of the zero extinguish signal input or circuit must be as close as possible to the terminal of the counter to make the signal line as short as possible 3. Avoid using others such as high voltage wires or power cables etc. with the same tube or twisted track line to avoid unnecessary interference. If necessary, please use the shielded wire, shielding layer connect the "+" of the counting terminals 4. It is not recommended to use a mechanical switch or micro switch as they have a relatively short service life and can be counted incorrectly after a long time. If you use a mechanical switch or micro switch, please try to use a better quality so as not to be misunderstood, and suggest a magnetic control switch Package includes: 1 x speedometer. 1 x Hall NPN Proximity Sensor
Product Features
- The tachometer uses the latest A/D converter chip and reference IC with high stability. Good stability, high precision and strong anti-interference ability.
- The outer appearance adopts standard size and is easy to install. Wide range of applications, including voltage, current and external sensor measurements for measuring temperature, pressure, displacement and other physical quantities.
- 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
- The LED display has two options: red and blue, four-digit precision display, display refresh rate, real-time update at a rate of more than three times per second.
- Measuring range: Frequency: 9999 Hz, 999.9 Hz, 99.99 kHz, automatic switching selection. The automatic range selection saves the user time and effort. Efficient completion of work.