FM500 Ultrasonic flowmeterDetailed product description：

The FM500 ultrasonic flowmeter uses the transmission time method or Doppler method to measure the flow velocity of a full tube of liquid

Applied to clean water or sewage, with optional measurement mode
Quick and easy setup and operation
Clamp type installation transducer, not in contact with liquid
Built in data logger, downloadable to standard SD card
Configurable analog and pulse outputs

The FM500 ultrasonic flowmeter provides accurate and unobstructed flow velocity measurement, suitable for a wide range of full pipe flow velocity measurements, including drinking water, raw wastewater, discharge water, well water, mud, and almost all liquids that can transmit sound. The FM500 ultrasonic flowmeter utilizes the latest ultrasonic technology and is a precise and easy-to-use hybrid flowmeter that can be operated in either Doppler or transmission time modes. The FM500 ultrasonic flowmeter has a fast and simple clamp type installation transducer, factory preset, and user programmable menu operation interface, which can be immediately put into on-site use. The FM500 ultrasonic flowmeter uses customized algorithms and DSP technology to ensure high-precision flow measurement, and the patented AGC algorithm does not require manual gain adjustment.

FM500 Ultrasonic Flow Meter - Excellent Features
5 programmable and password protected configurations, suitable for multi-user and portable applications, with an easy to read 320 × 240 pixel backlit LCD display screen that records data in standard SD card format (triggered by user adjustable time intervals, flow rates, and total flow set points), isolated 4-20mA analog output and 0-1000Hz pulse output.

FM500 Ultrasonic Flow Meter - Optional Features
Three configurable relay outputs and communication packages can be selected to connect the flowmeter to a computer via RS-232, RS-485, USB, or Ethernet. The communication package of FM500 ultrasonic flowmeter also allows remote access and control of all functions, including real-time display, system configuration, data recording, remote data acquisition, and process control. The software included in the communication package allows remote internet access through local network devices.

The FM500 ultrasonic flowmeter can be configured according to the user's specific pipeline and process liquid application. Please provide the following configuration information when placing an order:
Pipe inner diameter, material, and schedule, such as 3 "schedule 40 PVC
Measured liquids, such as untreated wastewater
The displayed volume and time unit, such as US gallons/minute
The displayed language, such as English

The FM500 series hybrid ultrasonic flowmeter can measure the flow rate of almost all liquids that can propagate sound waves. The FM500 ultrasonic flowmeter is called a "hybrid" flow meter because it can measure flow using Doppler or transmission time methods. The sound transducer of FM500 ultrasonic flowmeter is clamped on the surface of the pipeline and has no moving parts. This flow measurement method is safe, non-invasive, and very easy to maintain.

The Doppler measurement method of FM500 ultrasonic flowmeter requires the measurement of particles in the liquid that can reflect sound waves. If there are no particles in the fluid, incorrect readings may occur when using the Doppler method.

The transmission time measurement method of FM500 ultrasonic flowmeter requires relatively "clean" fluid to enable sound waves to complete the circuit. When the fluid contains particles, the FM500 ultrasonic flowmeter can also use transmission time mode. Considering the variation in the number of fluid particles, the FM500 ultrasonic flowmeter monitors the gain of the signal and periodically adjusts the gain using an automatic gain control (AGC) algorithm to maintain the optimal power level.

The speed at which sound is transmitted in liquid must be known. During initial configuration, the manufacturer will configure the ultrasonic flowmeter as a known liquid. The FM500 ultrasonic flowmeter has a user interface with 5 buttons that can be used to configure the flowmeter. The ultrasonic flowmeter software lists many common fluids that can be directly selected from the menu. If the sound velocity in the liquid is known, the customized "unknown" liquid can be manually inputted into the ultrasonic flowmeter by the user. In the user manual of FM500 ultrasonic flowmeter, a list of various liquids and their sound velocities is provided.

Technical parameters of FM500 ultrasonic flowmeter

Basic Parameters
Measuring principle	Ultrasonic Doppler method or transmission time method, pipeline mounted transducer
Fluid conditions	Full pipe, within the specified minimum and maximum flow rate range
Fluid type	Almost all liquids with acoustic conductivity
Transmission time mode	0% -1% (0-10000ppm) particles
Doppler mode	0.02% -15% (200-150000ppm) 100 micron particles
Nominal pipe size	20mm-315mm
pipeline material	Most metal and plastic pipes
Pipeline lining material	Most plastic liners
Liquid flow rate range	0-9m/s
Precision	±1%
Electronics&Interface
Power supply	90-264VAC, 50/60Hz or 15-30VDC, 40Wmax
display	320 × 240 pixel QVGA backlit LCD, UV resistant
Flow rate/total amount display	Maximum 10 digits x exponent to+32 power of 10, with optional decimal point position
display language	English, Spanish, French or German
keyboard	5-key tactile switch
safety	Management password and dedicated configuration password
Flow rate/flow unit	Flow rate and flow display units can be individually configured: US gallons, ounces, barrels (US liquids), barrels (US oils), cubic feet, liters, cubic meters, or user-defined "custom" units
Display time unit	Seconds, minutes, hours, days (flow rate and total flow rate are independent units)
display output	Update time: optional 0.25, 0.50, 1.0 (default), 2.5, 5.0 seconds Average flow rate time: optional 0.50, 1.0, 2.5, 5.0 (default), 10.0 seconds
signal output	Analog signal: isolated 4-20mA output - fully configurable, reversible Pulse signal: 0-1000Hz pulse output - fully configurable, reversible
Control/alarm output	3 independently configurable, 10 ampere, Form C, NO/NC relay outputs
data recording	Flow rate&flow rate: with date/time, FAT32 file format, can be imported into Excel Settings: Time interval trigger (1-999999s), flow rate and/or flow set point trigger Storage: 32MB SD card, over 30000 sets of data
environmental conditions
shell	NEMA 4X(IP66), Powder coated aluminum and stainless steel hardware
size	279H × 218W × 127D mm
weight	3.1 kg
Install	Wall, pipe (vertical or horizontal) or panel components
Panel Window	270H × 206W mm
Panel depth	71mm at the back, 55mm at the front
Operating temperature	-10 - +60℃
storage temperature	-40 - +70℃
external communication
computer connection	RS-232, RS-485, USB, Ethernet (including communication software)
Clamp on transducer
shell	NEMA 4X(IP66), Powder coated aluminum and stainless steel hardware
size	79H × 75W × 41D mm
weight	Each 0.4 kg
cable	Shielded coaxial RG/U 59, PVC sheath, RoHS compliant, standard length: 3m
Optional cable length	7m, 15m, 30m
Nominal pipe size	A-series transducer: 20mm -63mm B-series transducer: 63mm-300mm
Pipeline surface temperature	-10 - +100℃

Standard Configuration
FM500 ultrasonic flowmeter, including data logger, 3-meter cable, user manual

Accessory Selection
***Output relays, extension cables, etc., please inquire