Roof separation indicator is generated by monitoring the displacement of the roof strata separated when special equipment. It is mainly applicable to the use of anchors, anchor support the tunnel roof and the need to measure the displacement of the face plate. The instrument sensitivity, intuitive display mine pressure monitoring content, greatly reducing the visual error. To mine engineering and technical personnel and testing staff members to determine the length of the bolt, tensile strength, understand the use of anchors, anchor reasonable, economical and scientific basis needed. YZ series hydraulic pillow for the determination of roadway support, roadway, the stress state of filling body, the product of simple structure, small size, light weight, easy operation, pressure display and intuitive, reliable quality. Warner Mechanical and Electrical Equipment Co., Ltd. Tai'an City YZ series produced by hydraulic pressure observation pillow in mine rock pressure is widely used network testing equipment, according to the appearance of a square divided into circular hydraulic hydraulic pillow and pillow. YZ series hydraulic pillow pillow in the actual use of force timed install hydraulic rock pressure observation program must ensure that the whole area below the force, if only by the beat in the local area, will bring a lot of measurement error, and even cause the hydraulic pillow damaged, it must have the use of a hydraulic underlay thicker pillow (≥ 15mm) steel plate mine pressure plate mode as shown in the field also install side plate, welded plate edge stopper to prevent Hydraulic pillow under the force dislocation. To the technical parameters: (1) Range :0-60Mpa (2) Resolution: 2Mpa (3) Accuracy: 1.6% FS. Mine pressure observation equipment Tai'an City of Shandong University of Science and Electrical Equipment Co., Warner carefully developed over thirty years, the production of coal mine roadway roof pressure monitoring equipment. Warner Mechanical and Electrical Equipment Co., Ltd. Tai'an City Official Website: http://www.tahnjd.com Shanxi mine pressure | Warner electromechanical mine pressure observation equipment | rock pressure testing equipment provided by Warner electromechanical network. Warner Mechanical and Electrical Equipment Co., Ltd. Tai'an City (www.tahnjd.com) in the roof dynamic instrument, mining intrinsically safe pressure detector, under reduced pressure hydraulic supports self-recording instrument, top industry have high visibility, integrity management, quality both services, please contact us or consult our "Business League call" it!