▲ Features 1 Speed ??digital setting. 2 meticulous smooth stepless speed. 3 light and easy to carry, more suitable for field testing and calibration 4 configurable universal probe holder can be installed multiple sensors, covering a variety of thread sizes of sensor or non-threaded sensor, particularly suitable for a variety of magnetic-electric , magnetoresistive, Hall, eddy current speed sensor calibration. 5 configuration for all types of aviation-specific accessories may tachometer (models GZ-1, GZ-2, GZ-8A, GZT-1, GZT-2, A-10, T-45, etc.), marine tachometer, engine speed Table for verification. 6 can output standard electrical source, the secondary speed measurement instrument 7 is arranged separately check the speed sensor signal input interface, in the absence of secondary instrument cases, separate check speed sensor suitable for small and medium sized 8 Enterprise speed measurement standard equipment or applied to on-site commissioning and testing and other occasions ▲ The main technical indicators 1 speed range: 50 ~ 6000 r / min 2 Speed ??uncertainty: 1 × 10-3 (50 ~ 99 r / min) 3 × 10-4 (100 ~ 6000 r / min) 3 speed stability: 1 × 10-3 (50 ~ 99 r / min) 3 × 10-4 (100 ~ 6000 r / min) 4 timebase performance: Power Accuracy 1 × 10-5 day stability 3 × 10-5 5 speed resolution: 1 r / min 6 electrical output range: 2 ~ 9999 Hz Accuracy: 3 × 10-5 Waveform: square wave with an amplitude of 10V 7 chainring : involute tooth, teeth 60, modulo 2, diameter 124mm (according to user requirements and design specifications of the various arbitrary gear chainring) 8 Mounting thread: There are 12 kinds of thread size on the sensor mounting plate: Metric: M10 × 1, M12 × 1, M14 × 1, M16 × 1, M18 × 1, M16 × 1.5, M18 × 1.5, M20 × 1.5, M22 × 1.5 Inch: 1 / 4-40,3 / 8-24,5 / 8-189 Total Power: ≤300 W 10 Dimensions: 330 × 310 × 260 mm