Lxe electromagnetic water meter circuit adopts 16 bit embedded micro power processor, specially designed sensor excitation circuit and high-efficiency lithium battery power supply management system, which has the characteristics of full digital signal processing, measurement stability, high measurement accuracy, strong anti-interference ability, etc., and realizes automatic two-way flow measurement, on-site instantaneous flow, positive and negative cumulative total amount display, self diagnosis fault alarm and GSM Data wireless remote transmission and other functions, users can realize the wireless remote transmission, storage, data analysis and other functions of flowmeter data through the powerful GSM / GPRS Remote management software system.
Lxe series electromagnetic water meter is easier to install, use and maintain. Many features meet the requirements of customers for high accuracy and reliability of measurement process parameters.
Lxe series electromagnetic water meter is specially designed according to the actual requirements of water supply enterprises to optimize water supply and ensure the accuracy of water trade measurement and settlement. It conforms to the standards of lso9104 (GB / t18659) and so4064 (GB / t778). It has the advantages of accurate measurement, high reliability, good stability and long service life. It is the best choice for water measurement in water supply enterprises.
Product use
Lxe electromagnetic water meter is used for continuous measurement, memory, and display of the total amount of cold water flowing through the tap water full pipeline. It is used for household water measurement of large users and meets the requirements of water supply enterprises for accurate measurement and settlement of end users.
Product characteristics
A. micro power design, four 3.6V lithium batteries, continuous operation for 3-6 years;
B. overall modular assembly design, plug-in design of field replacement components, without welding and secondary sealing;
C. the display adopts low-power LCD large screen LCD, which can display instantaneous flow rate, flow rate, pressure, positive and negative cumulative total amount, alarm prompt and other flow parameters;
D. provide self diagnosis function, special infrared remote control operation, without key operation;
E. design of flow rate change self tracking function;
F. provide pulse output for easy calibration;
G. provide RS485 communication interface to realize wireless data remote transmission;
GPRS module adopts high-performance industrial embedded processor, transparently transmits data, and supports the simultaneous use of SMS and GPRS channels. The upload protocol is transparent and open, and it is more convenient to access the original system, without the need to install system software separately.
Design standard
GB / t778-2007 measurement of water flow in closed pipeline full pipe drinking cold water meter and hot water meter
Jjg162-2009 verification regulation of cold water meter
GB / t18659-2002 measurement of flow rate of conductive liquid in closed pipeline performance evaluation method of electromagnetic flowmeter
Rated working conditions
Flow range: q1-q3
Ambient temperature: 5 ° c-55 ° C
Water temperature: cold water T30 ° C hot water T90 ° C
Water pressure: 0.03mpa ~ maximum allowable pressure (mpa10)
Water quality: tap water, direct drinking water, domestic hot water
Ambient temperature: (0 ~ 100)% RH
Flow condition: closed full flow pipeline with good liquid distribution
Product technical parameters
|
number |
Parameter name |
Parameter description |
Remarks |
|
01 |
electrode |
316L |
Structural material |
|
02 |
flange |
Carbon steel, stainless steel |
|
|
03 |
lining |
Natural rubber、KCA |
|
|
04 |
Body |
Carbon steel, stainless steel |
|
|
05 |
Header |
Pressed film cast iron (treated with Teflon) |
|
|
06 |
Rated pressure |
1.0MPa（Special pressure can be customized） |
Main electrical parameters |
|
07 |
caliber |
DN40～DN300（Pipe flange type） |
|
|
08 |
Temperature class |
T50 |
|
|
09 |
Electrode form |
Standard fixed type |
|
|
10 |
Power supply |
Built in 3.6V lithium battery |
Power supply |
|
Built in 3.6V lithium battery + solar energy |
|||
|
Built in 3.6V lithium battery + 24VDC |
|||
|
With external backup battery: internal 3.6V lithium battery + 220VAC |
|||
|
11 |
Protection level |
IP68 |
|
|
12 |
ambient temperature |
（-25～55）℃ |
|
|
13 |
Number of electrodes |
4 individual |
|
|
14 |
Storage temperature |
（-40～60）℃ |
|
|
15 |
Flow direction |
Positive and negative |
|
|
16 |
output signal |
Pulse (for calibration) |
|
|
17 |
communication |
RS-485（ModBus Agreement） |
|
|
18 |
Alarm (signal) |
Empty pipe, excitation, upper and lower limits, etc |
Flow parameters
|
caliber |
50 (2") |
65 (21/2"） |
80 (3") |
100 (4") |
125 (5") |
150 (6") |
200 (8") |
250 (10") |
300 (12") |
|
R[Q3/Q1] |
400 |
400 |
400 |
400 |
400 |
400 |
400 |
400 |
400 |
|
Q1[m3/h] |
0.16 |
0.16 |
0.25 |
0.40 |
0.63 |
1.00 |
1.60 |
2.50 |
2.50 |
|
Q2[m3/h] |
0.25 |
0.25 |
0.40 |
0.63 |
1.00 |
1.60 |
2.50 |
4.00 |
4.00 |
|
Q3[m3/h] |
63 |
63 |
100 |
160 |
250 |
400 |
630 |
1000 |
1000 |
|
Q4[m3/h] |
78.75 |
78.75 |
125 |
200 |
312.5 |
500 |
787.5 |
1250 |
1250 |
Note: the accuracy level of lxe series electromagnetic water meter is level 2.
Indication error limitThe accuracy level of this series of water meters is level 2. In the range of water temperature from 0.3 ° C to 30 ° C, the maximum allowable error of water meters is ± 2% in the high area (Q2 ≤ Q ≤ Q4) and ± 5% in the low area (Q1 ≤ Q < Q2). When the water temperature exceeds 30 ° C, the maximum allowable error of the water meter in the high zone is ± 3%.
Appearance and installation dimension
|
caliber |
mm |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
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|
inch |
2 |
2 1/2 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
||||||||
|
Nominal pressure（Mpa） |
1.0 |
||||||||||||||||
|
Boundary dimension |
L |
mm |
200 |
250 |
250 |
250 |
250 |
300 |
350 |
450 |
500 |
||||||
|
inch |
7.87 |
9.84 |
9.84 |
9.84 |
9.84 |
11.81 |
13.78 |
17.72 |
19.69 |
||||||||
|
H |
mm |
360 |
385 |
393 |
418 |
438 |
470 |
523 |
578 |
628 |
|||||||
|
inch |
14.2 |
15.2 |
15.5 |
16.4 |
17.2 |
18.5 |
20.6 |
22.7 |
24.7 |
||||||||
|
D |
mm |
165 |
185 |
200 |
220 |
250 |
285 |
340 |
395 |
445 |
|||||||
|
inch |
6.5 |
7.3 |
7.9 |
8.7 |
9.8 |
11.2 |
13.4 |
15.6 |
17.5 |
||||||||
|
number |
Parameter name |
Parameter description |
|
1 |
working voltage |
7.2V large capacity battery pack |
|
2 |
Standby current |
≤ 15ua, theoretical battery life more than 6 years |
|
3 |
working temperature |
-20℃~70℃ |
|
4 |
communication interface |
Uplink GPRS, downlink RS485 |
|
5 |
Data collection cycle |
1 time / hour (sampling frequency can be set) |
|
6 |
Data upload cycle |
Whole point upload (0-23h can be set) |
|
7 |
Data content |
Sampling data: SIM card number, water quantity parameter, pressure parameter, temperature parameter, location information, battery voltage, signal strength, water meter status of built-in terminal |
