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FU50 Ultrasonic Flow Meter (Ultrasonic Water Meter)
Principle and structure: When an ultrasonic beam propagates in a liquid, the flow of the liquid will cause a slight change in propagation time. The ch
Product details
Principle, structure
When an ultrasonic beam propagates in a liquid, the flow of the liquid will cause a slight change in propagation time, and the change in propagation time is proportional to the flow velocity of the liquid, which follows the following expression:
θ is the angle between the sound beam and the direction of liquid flow
M is the number of straight line propagation times of the sound beam in the liquid
D is the inner diameter of the pipeline
TUP is the propagation time of the sound beam in the positive direction
Tdown is the propagation time of the sound beam in the opposite direction
△T=Tup-Tdown
characteristic
Dual channel high-precision design with DN50 caliber and above diversion layer
● Protection level IP68
● Built in quantitative controller and time-sharing accumulator
Automatically start the controller at the set time to achieve automatic timed and quantitative water supply or irrigation.
Gradual rate has been achieved by accumulating traffic in a set time period.
● Thermal measurement
Equipped with dual PT1000 temperature measurement function, it can achieve heat metering and is suitable for the air conditioning and refrigeration industry.
Ultrasonic measurement, no rotation, no worn parts
Long term guarantee of measurement accuracy and high overall reliability.
Suitable for various water qualities, including those containing gravel and weeds.
Technical Parameter
| Measure fluid | Full pipes of water, sewage, seawater (other liquids need to be customized) | |||||
| Fluid temperature | 0-30°C(0-160℃) | |||||
| work environment | Temperature: -10-45 ℃; Humidity ≤ 100% (RH) | |||||
| Enduring pressure | 1.6Mpa (2.5Mpa optional) | |||||
| Upstream fluency sensitivity level | U3 | |||||
| Downstream fluency sensitivity level | D0 | |||||
| Electromagnetic compatibility level | E2 level | |||||
| communication interface | RS485/M-BUS/Infrared | |||||
| output signal | Two isolated OCT or TTL pulse outputs/one two-wire 4-20mA | |||||
| power supply | Built in lithium battery (3.6V, 19Ah)/external DC8-36V DC power supply/two-wire 4-20mA power supply | |||||
| protection grade | IP68 capable of working up to 2 meters underwater | |||||
| Local display | Dual row display includes 9-digit cumulative quantity, 4-digit instantaneous flow, as well as various status prompts and units | |||||
| Data Storage | Using EEPROM/FLASH to store parameters, automatically record the cumulative traffic of the previous 128 months and 512 days | |||||
| Flow measurement cycle | Measurement status: once per second; Verification status: 4 times/second | |||||
| power consumption | The battery can be used continuously for more than 10 years | |||||
| Liquid receiving material | DN15-DN40 brass (stainless steel) | |||||
| DN50-DN150 ductile iron (stainless steel) | ||||||
| DN200-DN300 carbon steel (stainless steel) | ||||||
Display and operation
58 × 22mm LCD display
Display instantaneous flow, cumulative flow, time, and various statuses on the same screen
Touch button
Touch the glass with your fingers to complete the operation
Support forward and reverse flow measurement
Can measure instantaneous flow and cumulative flow separately in both forward and reverse directions
Multiple measurement units can be set
Accumulated traffic: m³、ft3、GAL、L
Instantaneous flow rate: m³/h、GPM、L/m
Infrared communication interface
Supports multiple protocols such as M-BUS
Communication and signal types
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standard configuration
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Terminal number
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definition
|
|
1
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485+（A）
|
|
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2
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485-(B)
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|
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3
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DC8-36V
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|
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4
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GND (can be used as a 485 grounding terminal)
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|
Optional
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Terminal number
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definition
|
|
1
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Two wire system 4-20mA (can be powered by 24V)
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|
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2
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OCT1 (open collector output 1)
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|
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3
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OCT2 (open collector output 2)
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4
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C1 (TTL level pulse output 1)
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|
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5
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C2 (TTL level pulse output 2)
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Note: The above communication interfaces or output signals can be selected to be led to an external waterproof junction box at the time of ordering.
purpose
1. Measurement of liquids such as water and seawater
2. Water supply and drainage
3. Energy saving monitoring and water-saving management
4. Leakage monitoring
5. Traffic inspection, traffic tracking and collection
6. Heat measurement and heat balance
error-curve
Q2- Boundary Flow
Q3- Common Traffic
Q4- Overload Flow
pressure loss
Flow range
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Nominal diameter (mm)
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Range ratio R
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Flow rate (m ³/h)
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||||
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Start flow rate
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Minimum flow Q1
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Boundary flow Q2
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Common traffic Q3
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Overload flow Q4
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||
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DN15
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200
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0.003
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0.0125
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0.02
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2.5
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3.125
|
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DN20
|
200
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0.0035
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0.016
|
0.026
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3.2
|
4
|
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DN25
|
200
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0.007
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0.02
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0.032
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4
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5
|
|
DN32
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200
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0.01
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0.032
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0.05
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6.3
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7.875
|
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DN40
|
200
|
0.015
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0.1
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0.16
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20
|
25
|
|
DN50
|
100
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0.03
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0.4
|
0.64
|
40
|
50
|
|
DN65
|
100
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0.059
|
0.63
|
1.008
|
63
|
78.75
|
|
DN80
|
100
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0.064
|
1
|
1.6
|
100
|
125
|
|
DN100
|
100
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0.094
|
1.6
|
2.56
|
160
|
200
|
|
DN125
|
100
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0.12
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2
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3.2
|
200
|
250
|
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DN150
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100
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0.27
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2.5
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4
|
250
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312.5
|
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DN200
|
100
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0.315
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4
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6.4
|
400
|
500
|
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DN250
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100
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0.508
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4
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6.4
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400
|
500
|
|
DN300
|
100
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0.77
|
6.3
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10.08
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630
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787.5
|
Dimension
DN15-DN40
Company: mm
|
Nominal Diameter
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External dimensions
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threaded
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Effective thread length
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Weight kg
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Pressure rating bar
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||||
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L
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H1
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H2
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W1
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W2
|
|||||
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DN15
|
110
|
15
|
94
|
47.5
|
56
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G3/4
|
10.0
|
0.87
|
16
|
|
DN20
|
130
|
17.5
|
97
|
47.5
|
56
|
G1
|
12.5
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0.94
|
16
|
|
DN25
|
160
|
22.5
|
100
|
47.5
|
56
|
G1 1/4
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13.0
|
1.24
|
16
|
|
DN32
|
180
|
25
|
102
|
47.5
|
56
|
G1 1/2
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14.5
|
1.36
|
16
|
|
DN40
|
200
|
33.5
|
106
|
47.5
|
56
|
G2
|
16.0
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1.89
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16
|
DN50-DN300
unit mm
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Nominal Diameter
|
External dimensions
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Flange size
|
Weight kg
|
Pressure rating bar
|
|||||||||
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L
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H1
|
H2
|
W1
|
W2
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Outer diameter D
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Bolt hole center circle diameter D1
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Bolt hole diameter × quantity Φ × n
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Sealing surface
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Flange thickness C
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||||
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D2
|
f
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||||||||||||
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DN50
|
200
|
70
|
131
|
76
|
95
|
165
|
125
|
18×4
|
102
|
2
|
19
|
10
|
16
|
|
DN65
|
200
|
75
|
135
|
79
|
95
|
185
|
145
|
18×4
|
122
|
2
|
20
|
11.5
|
16
|
|
DN80
|
225
|
94
|
132
|
94
|
95
|
200
|
160
|
18×8
|
138
|
2
|
20
|
13.6
|
16
|
|
DN100
|
250
|
104
|
140
|
104
|
104
|
220
|
180
|
18×8
|
158
|
2
|
22
|
18.6
|
16
|
|
DN125
|
275
|
117
|
148
|
117
|
117
|
250
|
210
|
18×8
|
188
|
2
|
22
|
23.5
|
16
|
|
DN150
|
300
|
134
|
155
|
114
|
114
|
285
|
240
|
22×8
|
212
|
2
|
24
|
30
|
16
|
|
DN200
|
350
|
165
|
254
|
165
|
165
|
340
|
295
|
22×12
|
268
|
2
|
26
|
35.558
|
16
|
|
DN250
|
450
|
197
|
269
|
197
|
197
|
405
|
355
|
26×12
|
320
|
2
|
29
|
58
|
16
|
|
DN300
|
500
|
223
|
287
|
223
|
223
|
460
|
410
|
26×12
|
370
|
2
|
32
|
76
|
16
|
Model Selection Table
| FU50- | Pipeline ultrasonic flowmeter (ultrasonic water meter) (online) | |||||
| FU50E- | External clamp type ultrasonic flowmeter (ultrasonic water meter) (portable non pipeline type) | |||||
| orifice | ||||||
| DN15 caliber, threaded connection, external thread G3/4 | ||||||
| DN20 caliber, threaded connection, external thread G1 | ||||||
| DN25 caliber, threaded connection, external thread G1 1/4 | ||||||
| DN32 caliber, threaded connection, external thread G1 1/2 | ||||||
| DN40 caliber, threaded connection, external thread G2 | ||||||
| DN50 caliber, flange connection, 16 bar | ||||||
| DN65 caliber, flange connection, 16 bar | ||||||
| DN80 caliber, flange connection, 16 bar | ||||||
| DN100 caliber, flange connection, 16 bar | ||||||
| DN125 caliber, flange connection, 16 bar | ||||||
| DN150 caliber, flange connection, 16 bar | ||||||
| DN200 caliber, flange connection, 16 bar | ||||||
| DN250 caliber, flange connection, 16 bar | ||||||
| DN300 caliber, flange connection, 16 bar | ||||||
| Output signal and power supply type | ||||||
| 3.6V lithium battery (display only for selection) | ||||||
| RS485 DC8~36V | ||||||
| 4-20mA DC24V | ||||||
| M-Bus remote meter reading system (symmetrical mbus) | ||||||
| Optional signal | ||||||
| No options available | ||||||
| TTL level pulse output | ||||||
| 2-channel normally open signal | ||||||
| Material of the liquid receiving body | ||||||
| Brass alloy structure UNI EN 12165 CW617N | ||||||
| nodular cast iron | ||||||
| carbon steel | ||||||
| Stainless steel 1.4301 (304) | ||||||
| (Special alternative) VARIO | ||||||
| No customization function | ||||||
| Protocol customization function | ||||||
| The above selection table does not include selection codes. If you need selection codes, please contact us or fill in your information | ||||||
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