GYH25 mine oxygen sensor Lu Heng Electric our core values: committed to making the most extensive customer enjoy the highest quality products and services, customers become the most trusted partner to expand Industry, China's electrical industry model. GYH25 mine oxygen sensor (hereinafter referred to as the sensor) is designed to meet the oxygen concentration of coal mine monitoring needs and developed. It can continuously and automatically converts into a standard oxygen concentration underground electrical signal transmission to be connected with the device, and has a local display of methane concentration, overrun sound and light alarm. Explosion test the sensor by the state authorities for online testing, can be used with various types of monitoring systems and domestic power meter, gas locking device supporting wind power, suitable for use in coal mining face fixed, electromechanical chamber, back to the wind tunnel and other locations. The main features of a sensor. Using new highly integrated single-chip computer and digital circuit, the circuit structure is simple, reliable performance, easy maintenance and debugging. ? 2. Realized the infrared remote control to adjust offset, sensitivity, alarm function, so simple and easy to adjust. 3. Increased control sensor power outage, power failure point can be set to achieve a multi-purpose machine. 4. Using new switching power supply, reducing the overall power consumption and increase the transmission distance of the instrument. 5. Increase the fault self-test function, easy to use and maintain. 6. Designed a new high-strength shell structure, and enhance the impact resistance of the instrument. The main technical parameters 1, the applicable conditions Ambient temperature: 0 ℃ ~ 40 ℃ Relative humidity: ≤98% RH Atmospheric pressure: 80kPa ~ 116kPa Winds: 0m / s ~ 8m / s 2, the major technical indicators: Measuring range: 0-25% O2 basic error: 0.0-25.0 + 3% full scale Response time: Response time (T90) of the sensor should ≤60s input voltage: (9 ~ 24) V Transmission distance: ≥2km alarm: continuously adjustable Alarm: intermittent audible alarm sound intensity: ≥85dB Sensor life:> 2 years (imported electrochemical) Display 3 LED work: Diffusion-proof type: Mine intrinsically safe explosion-proof mark: ExibI Mb Frequency: 200 ~ 1000Hz ; 5 ~ 15Hz; 5 ~ 155Hz; (current pulse output or opto-isolated outputs) power failure Output: DC signal 5VDC / 20mA or opto-isolated outputs. Dimensions: 270 × 120 × 50mm Weight: <1kg equipment: Optional * Our values: customer first, teamwork, professional dedication, innovation, positive action, forever young, brave and bare our team: integrity as the foundation to a passion for vitality, wisdom, hard work for a professional core, innovation-driven economy Ninglu Heng Electric Equipment Co., landline: 0537-2080758 Fax: 0537-2585538 phone: 15965728997 QQ: 3179595347 Contact: Feng Yang