GFM68 series clamp sanitary turbine flowmeter

GFM68 series clamp sanitary turbine flowmeter

Overview

GFM68 series clamp sanitary turbine flowmeterIt is the main type of velocity flowmeter, which uses a multi blade rotor (turbine) for sensingfluidThe average flow rate, from which the flow rate or total amount can be derivedinstrumentIt is generally derived fromsensorIt can be composed of two parts, the display device, or made as a whole.

GFM68 series clamp sanitary turbine flowmeterUsing a turbine for measurementflow meterIt first converts the flow rate into the rotational speed of the turbine, and then converts the rotational speed into an electrical signal proportional to the flow rate. This type of flowmeter is used to detect instantaneous flow and total cumulative flow, and its output signal is frequency, which is easy to digitize.

GFM68 series clamp sanitary turbine flowmeterThe induction coil and permanent magnet are fixed together on the housing. When the ferromagnetic turbine blades pass through the magnet, the magnetic resistance of the magnetic circuit changes, thereby generating an induction signal. The signal is amplified and shaped by an amplifier and sent to a counter or frequency meter to display the total accumulated flow rate. Simultaneously, the pulse frequency is converted from frequency to voltage to indicate instantaneous flow rate. The rotational speed of the impeller is proportional to the flow rate, and the rotational speed of the impeller is proportional to the total amount of flow. The output of the turbine flowmeter is a frequency modulated signal, which not only improves the anti-interference ability of the detection circuit, but also simplifies the flow detection system. Its range ratio can reach10:1The accuracy is±0.2%Within. The time constant of turbine flow meters with small inertia and size can reach0.01In seconds.

application

GFM68 series clamp sanitary turbine flowmeterWidely used in petroleum, chemical, metallurgical, water supply, papermaking, environmental protection, food and other fields, suitable for measuring stainless steel in closed pipelines1Cr18Ni9TiThe2Cr13And corundumAl2O3Hard alloy is a liquid that does not corrode and has no impurities such as fibers or particles. If used in conjunction with display instruments with special functions, it can be used for automatic quantitative control, over limit alarm, and other purposes.

feature

1Low pressure loss, impeller with anti-corrosion function

2Adopting advanced ultra-low power single-chip microcomputer technology, the whole machine has strong functions, low power consumption, and superior performance

3Intelligent flow display with non-linear accuracy compensation function. The accuracy of the correction formula is better than±0.02%　　

4The instrument coefficient can be set online by pressing the button and can be displayed on the screenLCDOn the screen,LCDThe screen is intuitive and clear, with strong reliability

5AdoptingEEPROMFor cumulative flow and instrument coefficient power failure protection, the protection time is greater than10Year by year

6Adopting high-performance technologyMCUCentral processing unit, responsible for data acquisition, processing, display, output, cumulative flow, instantaneous flow, etc

7Convenient human-machine interface implementation with standard display485Form for data transmission

8Adopting fully cemented carbide (tungsten carbide) shielded cantilever beam structure bearings, integrating rotating bearings and pressure bearings, greatly improving the bearing life, and can work in media with a small amount of sediment and dirt

9Adopting1Cr18Ni9TiAll stainless steel structure, (turbine adopts)2Cr13）Good anti-corrosion performance

10Easy to repair, with a self rectifying structure, small and lightweight, simple structure, can be assembled and disassembled in a short time, and easy internal cleaning

11Has strong resistance to magnetic interference and vibration, reliable performance, and long lifespan

12Low lower limit flow rate,Wide measurement range

13On site display type LCD screen displays clearly and intuitively, with low power consumption,3VLithium battery power supply can operate continuously5Years and above

14Corrosion resistant, suitable for acidic and alkaline solutions

Technical Characteristics

1Nominal diameter:（4～200）mm

2Medium temperature:（-20～80）℃ （-20～120）℃

3Environmental temperature:（-20～55）℃

4Accuracy: ±0.2%、 ±0.5%、 ±1％

5Detection signal transmission line system: three wire voltage pulse (three core shielded cable)

6Power supply: Voltage:12V±0.144V,Current: ≤10mA

7Output voltage amplitude: High level ≥8VLow level ≤0.8V

8Transmission distance: The distance from the sensor to the display instrument can reach250rice

9On site display power supply:3VPowered by lithium batteries, it can be used continuously3Year)

10Display mode: On site LCD displays instantaneous and cumulative flow rates

11On site display with signal output power supply:24V；4～20mATwo wire current output, long-distance transmission500rice