4 Dial LED RPM Speed Meter with Hall Switch r Red Blue Green 10~9999RPM DC 8~24V

DC 8-24V 10-9999RPM Dial LED , RPM Speed Meter, with Hall Switch r

Features:

With a standard size, easy to install.

Have good stability, high measurement precision.

Strong anti-jang capability.

Packing List: 1x Dial . 1x NJK-5002C ordinary hall switch. 1x Wire harne.

Specifications:

Item name: Dial LED

Type: LED , RPM Speed Meter.

Switch type: NJK-5002C ordinary hall switch(Note: If there is a frequency converter on the device that will interfere with the of ordinary Hall switches, it is recommended to use anti-interference Hall switches instead.)

Color: Black, display color: red,green,blue.

Working power supply: AC/DC8-24V, 40mA

Display mode: 0.56" LED, four readings

Measuring range: 10-9999RPM

Measurement accuracy: ±0.1%, reading ±1 character

Clear zero: automatic

Display refresh rate: >3 times/second

Over-range display: if the speed is too low, it will display "LLLL", if the speed is too high, it will display "HHHH".

r wiring: brown-Power+;blue-Power-;black-signal.

Operating temperature: -10 to 50°C.Operating humidity: 10 to 80% (without condensation). Operating preure: 80 tokPa.

Item size: as shown

Total weight: about 80g/2.82ouce

Precautions for use:

1. Connect the plug correctly according to the wiring diagram.

2. The Hall switch is NPN normally open type, and the distance of the Hall switch needs to be within 10mm. The installation diameter of the Hall switch is 12mm, and the wire length is within 1 meter.

3. Strong electroic interference should be avoided. It is best to use shielded wires or twisted pairs for measuring wires.

4. The counting signal of the counter and the switch or circuit of the reset signal input should be as close as poible to the terminal of the counter, so that the signal line is as short as poible.

5. Avoid the same tube or twisted wiring with other such as: strong electric wires or power wires, etc., to avoid unneceary interference. If neceary, please use shielded wires, and the shielding layer is connected to the counting terminal "+".

6. It is not recommended to use mechanical switches or micro switches, because their lifespan is relatively short, and it is easy to miscount after a time; if you use mechanical switches or micro switches, please try to use better quality ones to avoid miscounting. It is recommended to use a ic switch.

Note:

Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 10-30mm.