SZM-4,SZM-20 Magnetoelectric tachometerDetailed product description：

The SZM-4/SZM-20 magneto electric tachometer consists of an indicator and a sensor. Using a journal type wide-angle instrument as an indicator, it has the advantages of good vibration and impact resistance, stable indication, and high reliability. Connected through transmission lines without the need for an external power source, it can measure the speed of various power equipment from a distance. Mainly used for speed monitoring of various construction machinery.

Main technical specifications of SZM-4 and SZM-20 magneto electric tachometer
Measurement range: 0-1500r/min (speed ratio 1:1) 0-3000m/min (speed ratio 1:2)
Accuracy level: 1.5 level (20 ± ℃)
Working conditions: ambient temperature -25~+55 ℃, relative humidity 5-100% (including frost)
Temperature effect: When the temperature changes by 10 ℃, the indication error shall not exceed 1.2% of the upper measurement limit
Resistant to mechanical force: able to withstand transportation shock with acceleration of 10g and impact frequency of 60-100 consecutive impacts per minute for 1000 times
Weight: Indicator: 590g Sensor: 330g
Dimensions: Indicator: φ 107 × 97mm Sensor: φ 64 × 66.5mm