HT4200 photoelectric tachometerDetailed product description：

Details
HT-4200 is a new model that replaces HT-4100, and it has added a storage function that can store up to 10 results. And by supporting multiple pulses, it can also be measured at low speeds. The characteristics of holding a non-contact digital tachometer are easy to use and good performance. As long as the reflective film used as a rotation mark is attached to the shaft, the tachometer is aligned with the reflective mark, and the measurement button is pressed, the speed can be read directly with high accuracy (range 30-50000r/min).

This tachometer fully considers the convenience of operation in ergonomics, designed to be small and thin, and can be placed in a pocket on the chest. Due to non-contact measurement through light, it is very safe and there is no need to worry about the adverse effects of force or load on the rotating body during contact measurement. It can be measured with confidence.

Characteristics
As long as the measurement display value changes every 1 second when the switch is manually pressed, the measurement can be automatically repeated.
It has data retention function, and the final measured value can be continuously displayed for about 1 minute.
In order to accurately track the reflective film as a speed signal, red light is used to focus without looking at the rotation axis.
The handheld shell fully considers ergonomics and will not fatigue during measurement.
The measurable speed range is 30-50000 r/min

Brief specifications

Speed range	30 ～ 50,000 r/min
Display digits	5 people
Measure display time	7-segment LCD
Measure display time	1-second automatic repetition (but 2-second automatic repetition at 30-60r/min)
precision	30 ～ 12,499 r/min ± 1 r/min 12,500 ～ 24,999 r/min ± 2 r/min 25,000 ～ 50,000 r/min ± 4r/min
Storage time of measured values	About 1 minute
Range exceeds	The word 'OVER' indicates (displayed when the measurement range exceeds 50000 r/min)
Low battery display	Display with "OVER" text (displayed when the battery is depleted)
Temperature range for use	0～＋40℃
Save temperature range	－10℃～＋60℃
power supply	Number 7 battery (1.5 V) 3 cells, can continue to be used for about 20 hours
Overall dimensions	123（W）× 23（H）× 58（D） mm
weight	About 110g (including battery)
Attachment	1 reflective film (25 pieces in total, 12mm long), 3 No. 7 batteries
price	Please contact our office or agent
Optional parts	HT-011 reflective film (25 pieces in total, 12mm in length) for 3 cells of battery No. 7 HT-0002A Carrying Box HT-0003 Soft Box