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  • Principle of Variable Flow Meter: Flow meter (Float Type)
    to the flow meter. When there is no signifi cant load resistance (similar to atmospheric conditions) at the outlet and the subsequent section, P2 can be regarded as 0 MPa . G (gauge pressure), and as no pressure is applied to the flow meter, a general flow meter is used for calibration. (Refer
  • Principle of Variable Flow Meter: Rotameter (Flow Type)
    As shown in Figure A, the fl oat type fl ow meter is generally used with the rear section of the fl ow meter exposed to the atmosphere or without any load (without pressure loss resistance). There is a method to find a rough standard using the equation for calculation, but some er-ror
  • Resistance and Capacitance Meter Using a PIC 16C622
    The PIC16C62X devices create a new branch in Microchip?s PIC16CXXX 8-bit microcontroller family by incorporating two analog comparators and a variable voltage reference on-chip. The comparators feature programmable input multiplexing from device inputs and an internal voltage reference. The internal
  • Advances in Thermal Dispersion Mass Flow Meter Accuracy (.pdf)
    . That led designers to adopt the use of more robust and more consistently manufactured (RTD's) Resistance Temperature Detectors. RTD-based flow sensors were quickly categorized and associated with earlier delta temperature devices and became part of the Thermal flow sensor design family.
  • In-Situ Calibration - Methods & Pitfalls of Thermal Mass Flow Meter Sensor Field Validation
    . instrumentation needs to be checked (validated) or recalibrated as often as once a year. Sensor elements can become dirty, plugged, or drift over time. The resistance and capacitance of electronic components also degrades, leading. to changes in sensitivity or drift.
  • Technical Bulletin: Ceramic Ball Bearings
    Flow Technology has extended the application range of its FT & HS Turbine Flow Meter series through the introduction of ceramic ball bearings that provide superior performance & corrosion. resistance over traditional stainless steel and journal bearings in process applications.
  • Temperature Measurement Using RTDs
    A RTD or Resistance Temperature Detector is a passive circuit element whose resistance increases with increasing temperature in a predictable manner. In choosing one you must consider a RTDs temperature coefficient of resistance (TCR), its relative sensitivity, its accuracy and repeatability
  • Flow Valves
    . If the flow inlet to an actuator is controlled, the circuit is said to be a "meter-in " system. If actuator outlet is controlled, it is called a "meter-out " circuit. When that part of the fluid being diverted to the reservoir or another part of the circuit is controlled, it is said to be a "bleed-off

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