Ultrasonic flow meters use clamp-on sensors to measure liquid flow. The installation process is extremely simple, and the full Chinese man-machine interface is easier to operate. Especially suitable for flow balance test and flow monitoring: drinking water, river water, sea water, cooling water, hot water, industrial sewage, lubricating oil, diesel oil, fuel chemical liquid, etc.
FMU835 portable ultrasonic flowmeter utilizes the principle of low voltage and multi-pulse time difference, adopts high-precision and ultra-stable double-balanced signal differential transmission, differential reception digital detection technology, when the ultrasonic beam propagates in the liquid, the flow of the liquid will make the propagation time A small change occurs, and the change in propagation time is proportional to the flow rate of the liquid. At zero flow, the two sensors take exactly the same amount of time to transmit and receive sound waves (the only technology that can actually measure zero flow). When the liquid is flowing, the acoustic wave transit time in the upstream direction is greater than that in the downstream direction.
The unique three installation methods of FMU835 ultrasonic flowmeter make the measurement installation simple, convenient and flexible. Online measurement and calibration inspection measurement have been widely used in petroleum, chemical, metallurgy, textile, environmental protection, food and other departments and water conservancy construction. and other fields
Parameter :
| Items | Performance & Parameter | |
| Convertor | Principle | Transit- time ultrasonic flowmeter |
| Accuracy | ±1% | |
| Display | 2×20 character LCD with backlight, support the language of Chinese, English and Italy | |
| Signal
Output |
1 way 4-20mA output,electric resistance 0~1K,accuracy 0.1% | |
| 1 way OCT pulse output (Pulse width 6~1000ms,the default value is 200ms) | ||
| 1 way relay output | ||
| Signal
Input |
3 way 4-20mA input,accuracy 0.1%,acquire signals
like: temperature,press and liquid level |
|
| Achieve to heat maesurement by connecting the temperature transducer PT100 | ||
| Data
Interface |
Insulate RS485 serial interface,upgrade the flowmeter software by computer,
support MODBUS |
|
| Data
Record |
Thermal printer,external SD card (2G of capacity) | |
| Pipe
Installation Condition |
Pipe
Material |
Steel, Stainless steel, Cast iron, Copper, Cement pipe, PVC, Aluminum, Glass steel product, liner is allowed |
| Pipe
Diameter |
15~ 6000mm | |
| Straight
Pipe |
Transducer installation should be satisfied: upstream10D, downstream 5D,
30D from the pump |
|
| Measuring
Medium |
Type of Liquid | Single liquid can transmit sound wave,such as Water (hot water, chilled water, city water, sea water, waste water, etc.);
Sewage with small particle content; Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.); Chemicals (alcohol, etc. ) ;Plant effluent;Beverage;Ultra-pure liquids, etc. |
| Temperature | -30~160°C | |
| Turbidity | Less than 10000ppm and less bubble | |
| Flowrate | 0~±10m/s | |
| Working
Environment |
Temperature | Convertor:-20~60C; Flow Transducer:-30~ 160C |
| Humidity | Convertor: 85%RH; Flow Transducer:IP67 | |
| Power Supply | 8 built-in Ni-MH batteries 1.2V(for over 20 hours of operation).90V-260VAC adapter | |
| Power
Consumption |
1.5W | |