Strata Testing & Monitoring Instruments

• Single Hydraulic Prop Pressure Tester

  The Single Hydraulic Prop Pressure Tester measures the setting load and working resistance of individual hydraulic props on the longwall face. Props support the roof, and if pressure is too low...

  Read More
• Rock Bolt Angle Meter

  The Rock Bolt Angle Meter checks the installation angle of rock bolts, which the design calls for perpendicular to the roof. An off-angle bolt loses support effectiveness, so angle is a required...

  Read More
• Coal Mine Rock Bolt Pull Tester

  The Coal Mine Rock Bolt Tension Tester checks whether a rock bolt in roof or rib support reaches its design anchorage. The tester is a pulling jack plus a pump: the bolt passes through the jack...

  Read More
• Coal Mine Cable Bolt Pull Tester

  The Coal Mine Anchor Cable Tension Tester is the higher-range version for anchor cable, which is thicker and carries more load than a rock bolt. It pulls on the cable to verify anchorage force, so...

  Read More
• Mining Cable Bolt Load Cell

  The Mining Anchor Cable Force Gauge sits under the tray on a rock bolt or anchor cable to monitor stress in the roof over time. When the gauge reading rises, the strata are moving and a roof-fall...

  Read More
• Roof Tell-Tale Extensometer

  The Roof Delamination Detector measures separation displacement in the roof of bolt- and cable-supported roadways, giving engineers data on whether bolt and cable lengths are adequate and how well...

  Read More