KHJ1, KHJ2 intelligent power meter KHJ2 methane methane intelligent power meter monitoring methane concentration, and to achieve the controlled device power off protection, locking, unlocking function. Methane power meter sensor is equipped with remote control function, realize remote control, no need to open the cover for the internal data adjustments. KHJ2 intelligent Methane main technical parameters of a power meter, methane sensing basic parameters: Input intrinsically safe power supply (from the host): 18V, 300 ± 20mA, DC. Care setting value: maximum open circuit voltage of 24V, the maximum short-circuit current of 350mA. 2, the host basic parameters: a, enter the most: 2-way analog signals methane concentration in most (200-1000Hz, 5mA <5V current square wave signal). Enter the quantity: 2 intrinsically safe power supply (to the sensor): 18V, 300mA. 3, the cable parameters: Cable Model: YZF (3 × 1.5 +1 × 1.0), distributed capacitance 0.1η/km, distribution cable 1mH/km. KHJ1, KHJ2 intelligent power meter methane coal mine methane power supply proof instrument Jining Branch-Mining Equipment Co., Ltd. Contact: Lv