利用者:SpiveySala274

出典: くみこみックス

A liquid flowmetersis a device for measuring, monitoring, or recording the rate of flow, pressure, or discharge of a liquid, as of a gas.

An Ultrasonic Flowmeter is really a sort of flow meter that measures the flow of a liquid, gas or steam by utilizing the principle of ultrasound. The flow meter can measure the typical velocity along the path of an emitted beam of ultrasound, by averaging the distinction in measured transit time amongst the pulses of ultrasound propagating into and against the direction of the flow. Ultrasonic Flowmeters are affected by the pressure, temperature, density and viscosity of the flowing medium.

You will find 3 distinct forms of Ultrasonic flow meters.

  1. Transmission flowmeters, which might be distinguished into In-line flowmeters and Non-Intrusive flowmeters.
  2. Reflection or Doppler flow meters.
  three. Open-Channel flowmeter.

Ultrasonic Flowmeters like In-line Flowmeters are Multivariable Flowmeters as it is applied for the measurement of liquid, gas or steam in industrial applications for the water and wastewater treatment plant, chemical and petrochemical, oil and gas, power, pharmaceutical, paper, food and beverage industries.

Multivariable In-line Flowmeters, are employed for Volumetric or mass flow monitoring of most liquids, gases or steam. Multivariable In-line Vortex flowmeters utilizes three key sensing elements, a vortex shedding velocity sensor, a temperature sensor, as well as a pressure sensor to measure the mass flow rate of liquids, gases or steam.

In-line Vortex flowmeters operates within a following manner:

   * It measure flow of liquids, gas and steam by detecting the frequency at which vortices are alternatively shed from a bluff body.
   * As flow passes a bluff physique within the flow stream, vortex meter, the vortices build low and high pressure zones behind the bluff body, or shedder bar.
   * In-line liquid flowmeters uses a piezoelectric crystal sensor to detect the pressure exerted by the vortices on the velocity sensor.
   * The piezoelectric crystal converts these "pulses" into electrical signals. The meter uses a sensor designed to create a robust sensor and to minimize prospective leaks.

In-line Flowmeters are classified in to the following models:

  1. Pro-V? Model M22-VTP
  2. Pro-V? Model M22-VT
  three. Pro-V? Model M22-V
  4. Pro-V? Model M22-EM
  5. Pro-V Model M22-R

The Model M22-VTP gives you flow laptop or computer functionality in a compact field device.

The Model M22-VT integrates a precision 1000 Ohm platinum RTD temperature sensor that can be utilised to calculate and output compressed mass reading.

The Model M22-V delivers direct reading of volumetric flow rate-generally by far the most cost-effective answer for liquid flow monitoring-in applications ranging from common water flows to hydrocarbon fuel in flow measurement.

The Model M22 Power Monitoring option permits real-time calculations of power consumption to get a facility or course of action. The meter can be programmed to measure steam, hot water or chilled water.

The Model M22-Redundant flowmeter provides dual flowmeters inside the same pipe spool for essential flow applications or where a backup method is necessary.

VorTek Instruments LLC. manufactures precision multivariable gas mass flow meters like In-line Flowmeters and Insertion Flowmeters for the measurement of liquid, gas, and steam in commercial, industrial applications.