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clamp-on ultrasonic flowmeter
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keyword:
Water Level Sensor section
1. Equipment introduction:
Ultrasonic flowmeter is a self-contained flow measurement instrument based on microprocessor technology. Its working principle is that when the ultrasonic beam propagates in a liquid, the flow of the liquid will cause a small change in propagation time, and the change in propagation time 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.
2. Application direction:
Widely used for measuring flow rates of tap water, sewage, seawater, etc., suitable for various pipeline sizes.
3. Advantages and features of equipment:
♦ 0.5% linearity, 0.2% repeatability;
♦ The profile is measured using T6 non-conductive/special medium;
♦ Low voltage multi pulse balanced transmission and reception;
♦ Positive/negative/net accumulator;
♦ Isolated RS-485 interface, supporting MODBUS RTU;
♦ Anti-interference design, electrically isolated DC power supply;
♦ Built in heat measurement/calorimeter;
♦ Built in batch/quantitative controller;
♦ 2-channel two-wire PT1000 platinum resistance input circuit;
♦ Die cast aluminum casing (fixed type);
♦ 1 analog 4-20mA output;
♦ Optional DC/AC/220V AC power supply;
♦ Increase the sampling frequency to 128 times per cycle;
♦ Internal 64 bit floating-point data processing;
♦ OCT frequency signal output;
♦ 22 picosecond time difference measurement resolution.
Technical parameters
|
parameter |
Instructions |
|
Precision |
1.0% |
|
Repeatability |
0.2% |
|
Flow rate range |
0.03~±7m/so |
|
Measurement principle |
Ultrasonic transmission time difference principle, 32-bit CPU operation, 8-byte double floating-point operation, dual CPU parallelism. |
|
Measuring Period |
50mS. (20 times per second, 64 sets of data per cycle). |
|
input |
Can input 5 current signals, accuracy 0.1% (such as: temperature, pressure, liquid level and other signals) |
|
output |
OCT Pulse output: 0-9999Hz; Analog output: 4~20mA, maximum load resistance 750Ω |
|
Pulse signal |
Positive, negative, net flow and heat accumulation pulse, relay and OCT output |
|
Communication interface |
Full-function RS232 serial interface, optional RS485 or CAN bus mode. |
|
Straight pipe section length |
Upstream ≥ 10D, downstream ≥ 5D, ≥ 30D from the pump discharge. |
|
Types of fluid |
Water, oil and other single-medium liquids |
|
Fluid turbidity |
≤10000ppm, and the bubble content is small. |
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Fluid temperature |
-10~150℃. |
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Fluid flow |
Flows in both directions can be metered separately, and the net flow can also be metered. |
|
Working temperature |
Host: -10-70℃ (contact the manufacturer for temperatures outside this range); Probe: -30℃~+150℃ |
|
Working humidity |
Host: 85%RH probe: waterproof working, water depth ≤ 3 meters. |
|
Power supply |
Standard version: DC24V, AC220V power supplystyle. Low power consumption version: 3.6v lithium battery / 9~36V. |
|
Sensor |
External clamping 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. Standard pipe section type: suitable for pipe diameter DN10 ~ DN400, the whole machine measurement accuracy ±0.5%. |
clamp-on ultrasonic flowmeter PRODUCT SPECIFICATION
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