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  • Wireless Communication in Underground Mines
    During the period, he has developed intrin- sically safe methane, air velocity , and machine status sensors .
  • Hybrid Adaptative System of Gas Concentration Prediction in Hard-Coal Mines
    In underground part it consists of intrinsically safe programmable measuring and control equipment like methane monitors, outstations and sensors for analog measurement (CH4, CO, CO2, temperature, air velocity , smoke etc.) and binary state control (states of underground machinery and technological equipment).
  • Paint Usage Reduction in Automotive Paint Booths
    Figure 3 Acoustic Anemometers Used For Measuring Low Air Velocities Having proven the measurement capability of the acoustic anemometer, the next step was to develop a sensor that could be permanently mounted in the spray booth. .... Ford worked with the sensor supplier to develop an intrinsically safe certified sensor that was capable of indicating both the downdraft and cross flow components of the air flow using a single instrument.
  • Mathematica® programs with tungsten
    Had to be actually equal to Abb. 4.12 inertia and frictional forces. .... The bad agreement lay certainly with on the experimental setup. .... The sensor of the meter for the wind speed wasn't there where the air resistance on the vehicle attacked on a rod above behind.
  • Federal Register > Thursday, April 30, 2015 > [80 FR 24280] Petitions for Modification of Application of Existing Mandatory Safety Standards
    Air measurements recorded at the two belt openings where air exits the mine will be monitored with .... An intrinsically safe monitoring system capable of detection and monitoring of carbon monoxide, oxygen, methane and velocity will be installed and maintained along the refuse belt as indicated below:. .... (i) Carbon monoxide sensors will be installed near the center in the upper third of the entry…
  • Supply Chain Based Solution to Prevent Fuel Tax Evasion: Proof of Concept Final Report
    The reflected wave is detected by a suitable transducer, and then the level can be calculated from the velocity of sound in either the air or the liquid, depending on whether the operation is intrusive or nonintrusive. .... A differential sensor is required because pvapor (the vapor pressure in the tank above the surface of .... Several vendors offer versions of the above technologies that are safe to use with hydrocarbons—they are intrinsically safe or explosion proof.
  • States > Wyoming > State > Regulations > Workforce Services‚ Dept. of > Mining Inspector > [WY Regs dws/min - 4] 04 - General Mine Safety Rules for Under...
    (e) Sensor systems shall include a device or method for determining their operative condition. .... The electrical components of each fire suppression device used on permissible equipment inby the last open crosscut or on equipment in the return airways of any coal mine shall be permissible or intrinsically safe and such components shall be maintained in permissible .... (2) Suitable for the atmospheric conditions surrounding the equipment protected (e.g., air velocity , type, and proximity of adjacent combustible material) ; and .
  • Underground mine communications
    The system is intrin- sically safe and develops a minimum of 10 W intoa 120-m loop. .... 4) Remote Access Monitoring: In recent developments the monitoring of air velocity ,methane,carbonmonoxide,. .... A system has been developed to remotely access the sensor information from the underground and to transmit…
  • Advanced Mechanics in Robotic Systems
    As presented previously the generation of DLR light-weight robots is among the most advanced implementations of the ‘‘Safely controlled’’ approach in order to achieve intrinsically safer robots (De Luca et al. 2006). .... Each joint has sensors for joint position and joint torque. .... The KUKA robot con- troller can operate the robot in position, velocity and torque-controlled. .... Some previous work was based on air muscles, (Daerden and Lefeber 2002; Verrelst et al. 2006), DEXTER…
  • Control instrumentation-a survey of current practice and some future trends
    Sonic and ultrasonic sensors use properties of sound energy to provide measurement of liquid level. .... Ultrasonic waves get reflected at the boundaries between liquid and air , for example and the transit time for a given velocity of sound in the medium concerned will provide a measure of liquid level. .... These devices are ideal for intrinsically safe operation in an hazardous environment.