DW-4Coal Mine Multi-Point Displacement Meter——

The coal mine roof multi-point displacement meter is a monitoring instrument used to measure the separation displacement of the roadway surrounding rock roof. It provides data for roadway layout, support design, and roof displacement monitoring.It can separately display the separation of the roof rock layers within the bolt length range and beyond the bolt range. It provides coal mine engineers and monitoring personnel with the necessary basis to understand the length and tensile strength of bolts, as well as the rationality and economy of the bolts used. The multi-point displacement meter mainly consists of a base anchor, steel strand, sleeve, vernier, and tensioning screw.

Multi-Point Displacement Meter Parameters:

Range:0-20cm;

Measuring Points:4points; Visibility: >30meters(The instrument has waterproof reflective adhesive stickers).

Measurement Method: Reflective color display;

Number of Measuring Points:4;

Range:200mm;

Reading Accuracy:1mm.

Installation Anchor Hole Diameter:30-42mm.