FMU832 Wall Mounted Ultrasonic Flowmeter Heat Meter

Ultrasonic flow meters are instruments that measure flow by detecting the effect of fluid flow on an ultrasonic beam (or ultrasonic pulse).
Clamp-on or tube-segment ultrasonic flow meters are based on the principle of “velocity difference method” to measure the liquid flow in a circular tube. It adopts advanced multi-pulse technology, signal digital processing technology and error correction technology, which makes the flow meter more suitable for the environment of the industrial site, and the measurement is more convenient, economical and accurate. The products have reached the advanced level at home and abroad, and can be widely used in petroleum, chemical, metallurgy, electric power, water supply and drainage and other fields.

Parameter :

Products name Ultrasonic flow meter/heat meter
Main unit Accuracy Better than ±1%
Repeatability Better than 0.2%
Principle Transit-time measuring principle
Measurement Period 500ms
Display LCD with backlight, display accumulated flow/heat, instantaneous flow/heat, velocity, time etc.
Output Analogue output: 4-20mA or 0-20mA current output. Impedance 0∼1kW. Accuracy 0.1%.
OCT output: Frequency signal (1~9999HZ)
Relay output: over 20 source signal (no signal, reverse flow etc.)
RS485 serial port
Input Three analogue input
Three-wire PT100 resistor input (optional)
Other functions Automatically record the totaliser data of the last 64 days / 64 months / 5 years;

The power-on time and corresponding flow rate of the last 64 power on and off events. Allow manual or automatic flow loss compensation

The instrument working status of the last 64 days

pipe material Steel, stainless steel, cast iron, cement pipe, copper, PVC, aluminum, FRP etc. Liner is allowed
Size 15-6000mm
Straight pipe section In the upstream it must be beyond 10D, in the downstream it must be beyond 5D, in the upstream the length must be beyond 30D from the access of the pump. (D stands for pipe diameter)
Liquid Types Water, sea water, industrial sewage, acid & alkali liquid, alcohol, beer, all kinds of oils which can transmit ultrasonic single uniform liquid
Temperature Standard: -30C – 90C ,High-temperature:-30C – 160C
Turbidity Less than 10000ppm, with a little bubble
Flow Direction Bi-directional measuring, net flow/heat measuring
Environment Temperature Main Unit: -30C – 80C
Transducer: -40C -110C, Temperature transducer: select on enquiry
Humidity Main Unit: 85% RH
Transducer: water-immersible, water depth less than 3m
Cable Twisted Pair Line, standard length of 20m, can be extended to 500m (not recommended); Contact the manufacturer for longer cable requirement.

RS-485 interface, transmission distance up to 1000m

Power Supply AC220V or DC24V
Power Consumption Less than 1.5W
Protocols MODBUS, M-BUS, Fuji extended protocol and other factory protocol

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