Measuring instruments for professional applications
Large selection Measuring devices for monitoring and controlling physical variables in industrial applications.
Product information measuring instruments
Measuring devices serve the Measurement pyhsical quantities, such as for example Time, Distance, Speed or eletrical quantities such as Power and Voltage. The physical value is translated into a numerical value and a unit. This enables mathematical processing and a human-readable representation. The measured values are shown on a display or transmitted to other devices in the periphery, which is typically implemented with an analogue signal or with a communication protocol. Analogue signals used in industry are either 0/4 to 20 mA or 0/2 to 10 V. Here, the smallest value of the analogue signal corresponds to the smallest possible measured value and the largest value of the analogue signal corresponds to the largest possible measured value. Thus, each measured value can be assigned to an analogue signal value. Typical communication protocols used in industry are, for example, Modbus RTU, Profinet or Ethernet. It should be noted that measuring devices can never represent the actual physical value, but only an approximate value. The more accurate the measuring device, the closer the measured value is to the actual physical value.
Types of measuring instruments
Measuring instruments are used as far as possible in electronic, electromechanical and mechanical Types of equipment subdivided. The definition here refers to the type of measurement or the way in which the measurement result is displayed. In the case of electronic devices, the measurement is electronic in that, for example, an electrical voltage or current is measured or electronic signals are recorded. Furthermore, with this type of device, the measurement result is usually shown on an electronic display, usually in the form of a digital digit display. With electromechanical measuring instruments, the measurement is electronic, but the display of the measurement result is mechanical, such as with a mechanical roller counter. Mechanical measuring instruments implement the measurement with mechanical components. This can be done, for example, when measuring a distance with the help of a measuring wheel which covers a defined distance per revolution. By recording the number of revolutions, the exact distance travelled can be defined. This is usually done with a mechanical counter that displays the measured value on a mechanical display. Likewise, when measuring the length of ropes and cables, a measuring device with a measuring wheel and mechanical counter is often used. Furthermore, mechanical devices offer the advantage that they can be operated independently of a power supply and are usually more robust than electronic devices.
Measuring instruments Types
Measuring instruments are used with machines mainly in Switchboards installed and are therefore Panel-mounted instruments called. In this case, the panel is cut out according to the installation dimensions of the instrument and the instrument is removed from the panel. Front inserted into the control panel. The Fortification Depending on the variant, it is done with Screw fastening, additional Mounting bracket or with the housing integrated Spring clips. If the meter is to be protected against environmental influences, an additional seal is inserted between the housing support and the control panel. This provides a seal against dust and splash water, for example, and protects the machine accordingly. The wiring is done at the unit on the back of the control panel. The cables of the measuring line and, if necessary, the supply voltage are attached to the connections of the measuring unit. Since the measuring unit of the machine is located behind the control panel, it is protected against physical damage. For the operator, in turn, there is protection against electrical voltage during operation, as the wiring of the lines is located behind the control panel. Furthermore, measuring devices in Switch cabinets installed. This is usually the case when machines and systems are centrally monitored and controlled, for example in machine halls or in cold storage rooms where the measuring device is installed outside this room in a control cabinet. In this case, the devices are usually installed on a Top-hat rail fastened. This is a standardised mounting rail on which many of the required components are mounted. The mechanical fastening on the top-hat rail and the housing dimensions are standardised to ensure a uniform and uncomplicated connection. Therefore, the devices used for this purpose are Top-hat rail measuring devices called. The unit is mounted on the top-hat rail and fixed with a spring clip or screw fastening. Mechanical measuring instruments are mostly mounted stationary according to the working environment. Depending on the application, this can be done on a machine or in the room.
Areas of application
Measuring devices are used in a variety of applications. For example, length measuring devices are used to determine the length of textiles or foils for sale, as is the case in DIY stores with the Cutting carpets or PVC floors to length is made. A similar application is the cutting to length of cables, ropes or hoses. In road construction, on the other hand for measuring a distance so-called distance measuring devices or rolling tachometers are used. These are equipped with a measuring wheel, a mechanical counter that indicates the number of metres measured and a guide rod with a handle. The worker walks the corresponding distance and the distance can be measured by the number of revolutions of the measuring wheel. In the field of electronic meters, these are used to measure the total energy consumption for billing purposes or to analyse at which times how much electricity is consumed. In this case, the knowledge gained from the measurement result can be used to determine the energy consumption. Reduce energy consumption or time to save costs. It is also possible to measure whether a machine part is worn and needs to be replaced. If, for example, a saw requires too much current, this can be an indication that the saw blade is blunt and needs to be replaced. Similarly, the quality of a power supply can be measured with special electronic measuring devices, so-called power analysers. In the field of Automation In turn, the devices are used to measure the positions of machine parts, such as CNC milling machines or 3D printers. Hour counters are used to measure the operating hours of machines or tools. The result of the time measurement can be used, for example, for the Billing of rental equipment, Maintenance intervals or the exchange of parts.