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PRODUCTS CENTER
The DQL100-G1 mine suspended compass and inclinometer are supplied as a set and serve as auxiliary surveying instruments for mining operations. The instrument is primarily used to measure the magnetic azimuth and the dip angle of compass traverse lines in secondary roadways and longwall faces within the mining area. The DQL100-G1 mine suspended compass consists of four main components: a bent-arm support assembly, a circular-ring frame assembly, a compass-box assembly, and a magnetic-needle assembly. The first three components together form a universal gimbal mount, which ensures that the compass box remains balanced in any orientation.
The DQL100-G2 suspended compass inclinometer and the FD-200 slope gauge are combined into a single set for measuring horizontal and inclined angles in mine shafts and tunnels. The instrument is primarily used to measure magnetic azimuths and the inclination angles of compass traverse lines in secondary roadways within mining areas and on retreat mining faces. Its overall design is based on the angle-measurement method known as the “cross-string method,” making it particularly convenient for measuring horizontal angles in underground workings subject to external magnetic interference, such as tunnels with metal supports and mines containing iron, nickel, and other ferrous or nonferrous minerals. At the same time, the instrument retains the basic structure of a conventional suspended compass, allowing it to be used as a standard suspended compass for determining magnetic azimuths when no external magnetic interference is present.
This instrument is primarily used for measuring magnetic azimuths and dip angles along guide lines established with a compass in secondary roadways of mining areas and on longwall faces. Thanks to the addition of a laser collimation device, measurements can be extended by means of beam projection. The DQL100-G1J mine laser suspended compass consists of the DQL100-G1 mine suspended compass equipped with an FD-1J laser mount. This design eliminates the accuracy limitations inherent in traditional suspended compasses, which rely on visual sighting by operators to determine azimuths. Moreover, when conducting surveys in high-risk environments such as mine shafts, crosscuts, and stopes, the laser can replace the suspension cord, thereby enhancing operator safety and improving work efficiency.
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