Controller Measures And Doses Small Liquid Volumes

Burkert has introduced the Liquid Flow Controller (LFC), which integrates a sensor, control electronics and proportional valves. The LFC accurately measures and doses small volumes of liquids with nominal flow rates of 10-600ml/min (0.6 to 36 litres per hour) with a 1:10 measuring span. Thanks to its fast and accurate flow-rate measurement, the LFC is suitable for the dynamic control or metering of liquids such as deionised or demineralised water, methanol or low-viscosity oils.

The LFC can, therefore, be used in a number of industrial applications, including heat treatment (by carburisation or endogas generators), testing, surface coating, cooling (machine tools), filling, packaging and, in combination with Burkert mass-flow controllers (MFCs), the simultaneous dosage of gases and liquids in atomising or sterilisation processes. According to the company, the LFC is an integrated, cost-saving solution for applications where several liquids or a liquid and a gas must be regulated simultaneously.

Previously, this type of control was comparatively complex, involving the use of individual components, which raised issues of cost and interfacing incompatibilities. However, the LFC features an integrated design that optimises the differential-pressure process for liquid flow-rate measurements to give precise, fast and repeatable measurements in a compact device. The company claims that the digital controller combines reliability and functionality with features such as flow-rate measurement inside the medium flow (without moving parts); configuration and diagnosis via a serial interface using free Burkert software; an integrated totaliser for consumption analysis; flexible interfaces (analogue/digital via fieldbus or RS232/RS485); configurable binary inputs and outputs; and the option of an IP65 version for arduous environments.

The LFC is based on the tested software, hardware and mechanics of Burkert's MFC series. The controller is said to be simple to install and can be accommodated in difficult locations, such as directly behind angled piping. The device is available as either a closed-loop controller with an integral proportional control solenoid valve (LFC) or as a flowmeter (LFM).

Comments

Post a Comment

Popular posts from this blog

What is Class I Division 2?

Image
A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment. Class I Division 2 Classification Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standa
Read more

FUSE SIZING CONSIDERATIONS FOR HIGHER EFFICIENCY MOTORS

Image
When selecting the proper fuse for short circuit protection in motor starting applications, it is important to not only ensure that the fuse will not nuisance open during motor start up times, but also that the fuse will coordinate as required with overload relays. When sizing fuses between 125% and 150% of the motor nameplate current, several advantages, including ease of coordination with an overload device, a smaller disconnect, and increased short circuit protection from a lower fuse rating, can be achieved. However, if sizing at this level prevents the motor from starting, it may then be necessary to increase the fuse ampere rating and it then becomes important to know the NEC sizing limitations. As of June 1, 2016, the US Department of Energy has mandated that newly manufactured electric motors will need to meet NEMA Premium® efficiency standards. As motor efficiencies increase, motor locked rotor currents can also be expected to increase. In addition to this, with across-the-lin
Read more

7/8 16UN Connectors that Provide 600 Volts and 15 Amps

TURCK announces new A-Size 3 and 4-pin 7/8 16UN powerfast™ connectors that provide up to 600 Volts and 15 Amps of power. These IP67 rated connectors provide a modular wiring system designed to handle high current applications for machine power distribution, while providing resistance to vibration commonly associated with conveyors, motors and material handling applications. The cordsets are available with a tray rated, exposed run PVC flexlife ® cable, with or without STOOW rating, and 14 AWG wires that allow you to replace hard wiring with a robust, quick disconnect system that saves the time and money spent installing a conduit system. The A-Size powerfast line offers male and female, straight connectors, standard and custom lengths, and pigtails or extensions. To make the system complete, fully encapsulated mating receptacles, with 1/2”-14 NPT mounting threads are available.
Read more