Model: CDM2W Description: CDM2W Mining Roadway Section Wireless Tester MA: MFA170056 Introduction: 1. Measure coal mining roadway ventilated area, perimeter, wide, high. 2. For roadway ventilation control, it can monitor the section fast and accurately. 3. Through measuring given point, analysis roadways mine pressure deformation. 4. It owns explosion-proof function as well. 5. It can be used in methane (CH4) explosion gas environment. 6. Laser measurement has fast speed, high precision, direct reading and portable features. 7. Applicable for large roadway, irregular roadway section especially. Consist of: 1. KJD3.7 mining intrinsic safety tablet (MAB160279) 2. CDM2W-C mining roadway section wireless tester collector (MFA170059) Technology parameters: 1. Basic parameters Parameter Basic parameters range resolution error range Radius 0.3-100m 0.001 ± 1mm Angle 0°~360° 0.1 ± 0.1° 2. Display: LCD screen, real-time display, electric quantity indication and date/time display functions. 3. Storage: USB interface, data storage. 4. Intelligent alarm: It will cause alarm when test value is greater than set value. 5. Sampling time: can be set. 6. Sampling rate: can be set base on different demand. 7. Recharge: special power adapter with indication function. 8. Working time: 8 hours. 9. Battery: 3.6V, 4 lithium manganite batteries, 4000mAh per battery.