Two-channel ultrasonic heat flowmeter
2 year ago
Dual-channel ultrasonic flowmeter/heat meter is used to measure ultrasonic transmission time through high-precision time digital conversion chip, which can effectively overcome the problems of zero drift and large error in small flow measurement. The flow rate is measured by time difference method. Support a variety of communication methods; It has the advantages of high measurement accuracy, simple operation and stable operation.
The measurement accuracy and reliability of the instrument in complex fluid state are improved effectively by supporting dual channel measurement.
The measuring technology of time difference method is adopted comprehensively to avoid zero drift effectively and improve the measuring accuracy of small flow.
Support RS485 communication, with 4 ~ 20mA transmission, as well as relay switching function, more convenient integration with enterprise energy management system;
The host and probe types are diverse, and can be used together according to the needs of the field, which can meet the installation and measurement of special environments;
Rich interface, easy to use and operate.
Main performance index
Item
Performance, Parameters
Measuring
Host
Fineness
Level 2
Repeatability
0.5%
Velocity range
0.1 ~ ±7 m/s。
Measurement principle
Ultrasonic propagation time difference principle, 32-bit CPU operation, 8-byte double floating point operation.
Measurement period
50mS. (20 times per second, 64 sets of data are collected per cycle).
Display
2×10 or 4*8 backlit Chinese character LCD display, low power consumption for segment code LCD display.
Operation
4×4 keypad /4 key input.
Input
Two three-wire PT100/PT1000 platinum resistance input circuits can realize the function of heat metering
Export
Current signal: 4~20mA, impedance 0~500, floating, accuracy 0.1%FS.
Pulse signal: positive, negative, net flow and heat cumulative pulse OCT output.
Data interface: Standard isolated RS-485 interface.
Other Functions
Memory day, month, year cumulative traffic.
Fault self-diagnosis function; Network working mode, etc.
Inductor
External clamp type: small standard S1 type, suitable for pipe diameter DN15 ~ DN100mm
Medium standard M1 type, suitable for pipe diameter DN50 ~ DN700mm
Large standard L1 type, suitable for pipe diameter DN300 ~ DN6000mm
Insert type: The measuring pipe material is not limited (weldable, non-weldable can be) suitable for pipe diameter DN80 or more.
Standard pipe segment: suitable for pipe diameter DN50-DN2000
Cable Length
Can be extended to 100m (more than this length please contact the manufacturer).
Pipeline
Lining
Steel, stainless steel, cast iron, hard plastics, cement pipes and other dense pipes, allowing lining.
Inside diameter
10mm - 6000mm。
Length of straight pipe section
Upstream ≥10D, downstream ≥5D, ≥30D from the pump outlet.
Fluid
species
Water, seawater, acid lye, food oil, steam, coal, diesel, crude oil, alcohol, beer and other uniform liquids that can spread ultrasonic waves.
turbidity
≤10000 ppm, and small bubble content.
temperature
-10~150℃。
Flow direction
The positive and negative flow can be measured separately, and the net flow can be measured.
Working
environment
temperature
Host: -10-70℃ (greater than this temperature range, please contact the manufacturer)
Probe: -30℃ ~ +150℃
humidity
Host: 85%RH
Probe: can be immersed in water, water depth ≤3 meters.
Electric source
Ordinary version: DC24V, AC220V power supply mode.
Low-power version: 3.6v lithium battery / 9~36V.
Two-channel ultrasonic heat flowmeter is very common in our daily life. Besides producing Cold or heat Flow meter, our company also produces Flow meter and Level meter or instruments. If you are interested, please contact us.
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Main Product:
flowmeter,
level instrument,
temperature instrument,
digital indicator,
radar level gauge,
wires and cables