About Rock drill cylinder calibration
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About Rock drill cylinder calibration video introduction
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6 FAQs about [Rock drill cylinder calibration]
What is a calibrated cylinder?
The calibrated cylinder is a special cylinder used for daily verification of the system calibration. It is always accompanied by its own certification sheet. The test system compares the indexed pressure point from the certification sheet, to the known expansion for that point, thus verifying both pressure and expansion at the same time.
How often should a cylinder be calibrated?
In accordance with 49 CFR 180, the calibrated cylinder is used on a daily basis to ensure the test system is operating properly within its 1% calibration tolerance. The expansion value on screen must be between the 1% upper and lower limit calculated from the nominal value shown on the calibration certificate for that pressure point.
What is a drill rig instruction manual?
81 This instruction manual is part of the complete delivery of the drill rig. It provides informa-tion on the design and operation of the drill rig and contains advice and the measures ne-cessary to keep the rig operational. This instruction manual is no replacement for thorough training on the drill rig.
Can a cylinder be re calibrated?
The calibrated cylinder should be kept full of water at all times. If the cylinder is emptied, it should be dried immediately to prevent corrosion. The cylinder should be kept away from freezing temperatures. The cylinder does not require requalification. It can be recalibrated if an ‘out of calibration’ condition is suspected.
How to measure the torque exerted by a drilling machine on a rock?
Torque T (N m): The torque exerted by the drilling machine on the rock is measured by installing a torque sensor on the drilling rod. When this sensor is applied in practical projects, it suffers from fragility and inconvenient shortcomings (Wang et al., 2021). Improving the torque measurement is a topic of this study. Fig. 1.
What should I do if a calibration cylinder fails?
Always wear appropriate personal protection equipment when handling calibration cylinders. Perform periodic visual inspections to the calibrated cylinder to ensure there is no corrosion or damage to the cylinder. Corroded cylinders can fail under pressure causing equipment damage, severe bodily injury, or even death.