GFM66 series portable ultrasonic flowmeter

GFM66 series portable ultrasonic flowmeter

Overview

When an ultrasonic beam propagates in a liquid, the flow of the liquid will cause a slight change in propagation time, which is proportional to the flow velocity of the liquid. When there is zero flow, the time required for two sensors to emit and receive sound waves is exactly the same (the only technology that can actually measure zero flow). When liquid flows, the sound wave transmission time in the upstream direction is greater than that in the downstream direction.

application

The GFM66 series portable ultrasonic flowmeter is suitable forWater supply and drainage,Petroleum and Chemical Industry,Metallurgy and Mining,Heating and power generation,Water conservancy and water resources,Energy saving monitoring and water-saving management,Paper and shipbuilding industries,Food and Medicine,Traffic inspection, traffic tracking, and collection,Thermal measurement, thermal balance

feature

1Ultrasonic sensors can be selected from external clamp, plug-in, pipe section, and can also support water meter sensors installed at any angle, including parallel double insertion sensors.

2It has a bidirectional serial peripheral universal interface that can directly connect multiple devices such as4-20MAExternal devices such as analog output board, frequency signal output board, thermal printer, data logger, etc.

3The working parameters of the flowmeter can be solidified inside the machineFLASHIn the memory, there will be no problem of parameter loss. The working parameters for solidification can be automatically adjusted upon power on.

4Hardware modular design. There are motherboard modules4-20MAIt consists of output module, pulse output module, printer module, parallel port keyboard display module, serial port keyboard display module, etc. Users can choose according to their needs.

5TheMODBUSAgreementMBUSAgreementFUJIDifferent software communication protocols such as extension protocol and simplified water meter protocol are available for users to choose from. The recommended protocol isMODBUS-RTUorMODBUS-ASCIIagreement.

6Daily cumulative before being recorded64Day, month before accumulation32A month（2Year), and added year month day record content. The cumulative data of year, month, day can be obtained throughMODBUSProtocol read out.

7、16The flow meter records the time of the last power outage. All data can be processed throughMODBUSProtocol read out.

8Timer printing and data output function, automatically displaying the time of the next print output,22Programmable timed printing of content. The timed printing function can achieve automatic timed output or automatic recording of data.

9TheOCT1The pulse width of the cumulative pulse output can be within6millisecond-1Set within seconds. The factory default value is200millisecond.

10Equipped with a keyboard display parallel interface, connecting display components can form a simple flowmeter.

11The serial keyboard display component can be directly connected to the serial port, and can be plugged in and unplugged with power after parameter settings are completed.

12It has the function of determining the type of fluid based on the sound velocity of the fluid, and can identify the type of fluid.

13It has a programmable built-in quantitative controller. Can use external input signals orMODBUSCommand start.

14Single, single24V（GFM66MuseDC 8～36V）DC power supply is working. The working current is less than50MAUnder the condition of not connecting the monitor and the buzzer not sounding.

Technical Characteristics

1Measuring linearity better than0.5%The repeatability accuracy is better than0.2%Up to40Picosecond time difference measurement resolution, achieving measurement accuracy of ±1%.

2During each measurement cycle128The data collection is assisted by the latest developed flowmeter time difference analysis software, which has excellent performance, more stable and accurate display data, and better linearity.

3、 隔离型RS485Dual interface, flow meter and secondary meter can be connected throughRS485Bus communication, with a transmission distance of over kilometers.

4Equipped with three-way precision0.1%The analog input interface can be connected to signals such as temperature and pressure.

5、1road4-20MAAnalog output can be used as traffic/Heat transmitter.

6、2road3Line systemPT100The resistance signal input can be used as a heat meter.

7、3road4-20MAAnalog input, can be used as a data collector,Analog input interfaces can also be used as digital input interfaces. Programmable with dual isolation typeOCTOutput, used to output cumulative pulses, working status, etc.