Kofloc FM31 (TEFLON/PFA) Vortex Flow Meter for Liquids

The Model31 Karman Vortex Flow Meter employs the follow-ing principle for measurement of flows: When a columnar object (object that generates vortices) is placed in the flow path of a fluid, regular channels of vortices, called Karman vortex channels, are generated at the back of the object.

Description

The Model31 Karman Vortex Flow Meter employs the follow-ing principle for measurement of flows: When a columnar object (object that generates vortices) is placed in the flow path of a fluid, regular channels of vortices, called Karman vortex channels, are generated at the back of the object. Since the frequency of a vortex generated is linearly propor-tional to the flow velocity within a given range, the flow amount can be measured by counting the number of vortices. When the frequency of each vortex generated is detected by the incorporated vortex detector (piezoelectric device), the signal processing circuit outputs a signal which is linearly pro-portional to volume flow.

Brand

Kofloc

Kofloc

The natural environment is preserved through the balance of solids, liquids and gases that exist on the earth. However, human civilization has caused pollution that has greatly damaged our environment. The task of the present generation is to restore our environment to its natural healthy state. And this is also the greatest challenge for 21st century science and technology.

KOFLOC’s corporate motto is “A Scientific Approach for Fluids.” In other words, we create products that scientifically measure and control the balance of liquids and gases. We trust that through our work we are making a contribution to the regeneration of the environment and to the establishment of a prosperous society.

Features

  • Because of no moving part, the meter has superior reliability and dura-bility and no error in mounting position is produced.
  • Simple construction (its flow path of fluid contains a columnar object and a vortex detector only) ensures low pressure loss and low liquid leak. In addition, the detector does not get into contact with the fluid running through the path, therefore, it is ideal for process monitoring of various liquids.
  • Two types of particle-free body materials (PPS and PFA) are available for choice according to your needs.
  • Global specifications (Certification for CE Marking already acquired)
  • Since Teflon is the material for the entire wetted part and no O-ring is in use, the Model31 Series Karman Vortex Flow Meter is optimum for mon-itoring liquid flows in the manufacturing process of semiconductors.

Applications

  • FA instruments
  • Semiconductor manufacturing
  • LCD
  • Housing material production
  • Medicine production
  • Chemical industry
  • Biomedical applications
  • Environment systems
  • Food processing
  • Agricultural/Botanical applications

Specification

Item FM3101 FM3102 FM3103 FM3104
Flow range (L/min) 0.4-4 2-20 5-50 10-100
Connection 3/8”
Pipe end
1/2”
Pipe end
3/4”
Pipe end
1”
Pipe end
Fluids for measurement Ultrapure water, chemicals, and other liquids
Measuring accuracy ±3.0%+ 1 digit
Repeatability Within ±0.5% F.S.
Liquid temperature range 0-90℃ (No bedewing, no boiling)
Amb. temperature range 0-50℃
Outputs With indicator LED display in 3 digits
Current output: 4-20 mA (linear)
Alarm output: Open collector (2 LEDs; 80 mA, 30 VDC max.)
W/o indicator Current output: 4-20 mA (linear)
Pulse output: Open collector (10 mA, 30 VDC max.)
Supply voltage 12-24VDC
Materials Body All Teflon® (PFA), without O-rings
Cover Polybutylene terephthalate (PBT) resin
Cable 2 meters long; Conductor: Tinned bare annealed copper wire;
Sheath: Heat-/cold-resistant polyvinyl chloride (POC)