DN80-Gas turbine flowmeter

Introduction

Electromagnetic flow meter is one of the most popular flow meters. Flange type electromagnetic flow meter has been used for more than 50 years worldwide. It is widely used for all conductive liquids in every industry, such as water, acid, alkali, milk, slurry etc.

Advantages

Electromagnetic Flow Meter Advantages and Disadvantages
The main advantages of using electromagnetic flow meter is that it is with no moving parts, no pressure loss and require very less maintenance.
Flange type magnetic flow meter can be made large size range from DN3-DN3000mm and with bi-directional flow measurement.

Compared with other liquid type flow meter, the limitations of magnetic flow meter is that it can only be used for conductive liquid.Regarding non or low conductive liquid such as petroleum products, organic solvents can not be used. Electromagnetic flow meter will be affected if there’s strong magnetic filed in the surrounding environment.

Application

Flange Electromagnetic Flow Meter Installation Requirement
Electromagnetic flow meter is widely used in water treatment, food industry, pharmaceutical, petrochemical, paper mill, chemical monitoring etc. 
In the metallurgical industry, it is often used to control the flow of cooling water for continuous steel casting, continuous steel rolling, and steel-making electric furnaces; 
In the field of water supply and drainage in public utilities, electromagnetic flow meters are often used for the transfer measurement of finished product water and raw water in water plants;
In the pulp process of the paper industry, electromagnetic flow meters are involved in the measurement of the flow of grinding pulp, water, acid, and alkali; 
In the coal industry, measuring coal washing and pipeline hydraulic conveying coal slurry.
For food and beverage industries, it is used for beer and beverage filling measurement.
For chemical and petrochemical industries, it is used to measure corrosive liquids, such as acids and alkalis etc.

Table 1:  Flange Magnetic Flow Meter Main Performances Parameters

Model	QTLD-80-2-1-4-1-1-G-A-D16-2-A
Size	DN80
Accuracy	±0.5%FS
Velocity	0.1~15 m/s
Repeatability	≤0.17%
Structure	Compact / remote, cable length 10m standard, 100m max
Conductivity	> 5 μS/cm, demineralized water > 20 µS/cm
Protection class	IP 68
Electrode	SUS316L
Power Supply	85～250 VAC (50/60 Hz), 20～36 VDC
Power Consumption	<20W
Signal Output	Analog	4~20mA ( load resistor 0~750Ω)
	Pulse	Pulse
	Frequency	Forward & reverse flow output with a frequency range of 1~5000Hz
	Alarm	Two isolated open collector transistor (OCT) outputs for alarm signals
Communication	RS485 MODBUS RTU standard, HART, GPRS, PROFIBUS optional
Display	LCD Display,128X128mm, three lines, 4 buttons
	Instantaneous flow, total flow, flow velocity
Ambient Temperature	-20°C~60°C
Ambient Humidity	5 – 100%RH (relative humidity)
Fluid Temperature	Compact: -20°C~80°C,  Remote: -20°C~120°C
Liner Material	Neoprene  (-10°C~80°C)
Flange Standard	DIN, ANSI, JIS
Function	High and low alarm, exciting alarm, empty pipe alarm, self-diagnosis
Display Unit	L/s, L/m, L/h, m3/s, m3/m, m3/h, UKG, USG, gal/s, gal/m, gal/h, kg/s, kg/m, kg/h, t/s, t/m, t/h
Language	English, Chinese, Italian, Portuguese, French, Spanish, Korean

Table 2:  Flange Magnetic Flow Meter Electrode Material Selection

Electrode Material	Applications & Properties
SUS316L	Applicable to industrial/municipal water, wastewater and low corrosive mediums. Widely used in petroleum, chemical industries.
Hastelloy B	Strong resistance to hydrochloric acids below the boiling point. Resist against oxidable acids, alkali and non-oxidable salts. For instance, vitriol, phosphate, hydrofluoric acids, and organic acids.
Hastelloy C	Exceptional resistance to strong solutions of oxidizing salts and acids. For example, Fe+++, Cu++, Nitric acids, mixed acids
Titanium	Titanium can withstand corrosive mediums such as seawater, chloride salt solutions, hypochlorite salts, oxidable acids(including fuming nitric acids), organic acids, and alkali. Not resistant to high purity reducing acids such as sulphuric acids, hydrochloric acids.
Tantalum	Highly resistant to corrosive mediums. Applicable to all chemical mediums except Hydrofluoric Acids, Oleum and Alkali.
Platinum-iridium	Applicable to all chemical mediums except for Ammonium salts and Fortis

Table 3:  Flange Magnetic Flow Meter Flow Range

Size	Flow Range & Velocity Table
（mm）	0.1m/s	0.2m/s	0.5m/s	1m/s	4m/s	10m/s	12m/s	15m/s
3	0.003	0.005	0.013	0.025	0.102	0.254	0.305	0.382
6	0.01	0.02	0.051	0.102	0.407	1.017	1.221	1.526
10	0.028	0.057	0.141	0.283	1.13	2.826	3.391	4.239
15	0.064	0.127	0.318	0.636	2.543	6.359	7.63	9.538
20	0.113	0.226	0.565	1.13	4.522	11.304	13.56	16.956
25	0.177	0.353	0.883	1.766	7.065	17.663	21.2	26.494
32	0.289	0.579	1.447	2.894	11.575	28.938	34.73	43.407
40	0.452	0.904	2.261	4.522	18.086	45.216	54.26	67.824
50	0.707	1.413	3.533	7.065	28.26	70.65	84.78	105.98
65	1.19	2.39	5.97	11.94	47.76	119.4	143.3	179.1
80	1.81	3.62	9.04	18.09	72.35	180.86	217	271.3
100	2.83	5.65	14.13	28.26	113.04	282.6	339.1	423.9
125	4.42	8.83	22.08	44.16	176.63	441.56	529.9	662.34
150	6.36	12.72	31.79	63.59	254.34	635.85	763	953.78
200	11.3	22.61	56.52	113.04	452.16	1130.4	1356	1696
250	17.66	35.33	88.31	176.53	706.5	1766.25	2120	2649
300	25.43	50.87	127.2	254.34	1017	2543.4	3052	3815
350	34.62	69.24	173.1	346.19	1385	3461.85	4154	5193
400	45	90	226.1	452	1809	4522	5426	6782
450	57	114	286.1	572	2289	5723	6867	8584
500	71	141	353.3	707	2826	7065	8478	10598
600	102	203	508.7	1017	4069	10174	12208	15260
700	138	277	692.4	1385	5539	13847	16617	20771
800	181	362	904.3	1809	7235	18086	21704	27130
900	229	458	1145	2289	9156	22891	27469	34336
1000	283	565	1413	2826	11304	28260	33912	42390
1200	407	814	2035	4069	16278	40694	48833	61042
1400	554	1108	2769	5539	22156	55390	66468	83084
1600	723	1447	3617	7235	28938	72346	86815	108518
1800	916	1831	4578	9156	36625	91562	109875	137344
2000	1130	2261	5652	11304	45216	113040	135648	169560
2200	1368	2736	6839	13678	54711	136778	164134	205168
2400	1628	3256	8139	16278	65111	162778	195333	244166
2600	1910	3821	9552	19104	76415	191038	229245	286556
2800	2216	4431	11078	22156	88623	221558	265870	332338
3000	2543	5087	12717	25434	101736	254340	305208	381510
Remark:Suggest flow velocity range 0.5m/s – 15m/s

Table 4:  Flange Magnetic Flow Meter Selection Guide

QTLD

X

X

X

X

X

X

X

X

X

X

X

Caliber size

DN3-DN3000 (1/8″-120″)

Structure

Compact

1

Remote

2

Compact with explosion proof

3

Remote with explosion proof

4

Accuracy

±0.5%

1

±0.2%

2

Others

3

Lining Material

PTFE

1

FEP

2

PFA

3

Neoprene

4

Polyurethane

5

Hard Rubber

6

Ceramic

7

Others

8

Electrode Material

SS316L

1

Hastelloy B

2

Hastelloy C

3

Titanium

4

Tantalum

5

Platinum-iridium

6

Stainless steel covered with tungsten carbide

7

Others

8

Sensor Material

Carbon steel

1

SS304

2

SS316

3

Power Supply

20~36 VDC

G

85~265 VAC

E

9~36 VDC solar power

SD

Others

X

Signal Output / Communication

4~20 mA + Pulse + RS485 MODBUS

A

4~20 mA + HART

B

4~20 mA + Profibus PA/DP

C

GPRS

D

Flange Process Connection

DIN      D10:  PN10, D16: PN16, D25: PN25, D40:  PN40

D**

ANSI  A15:  150#, A30:  300#,  A60:  600#

A**

JIS     J10: 10K, J20: 20K, J30: 30K

J**

Others

O

Protection Grade

IP65 Transmitter + IP65 sensor

1

IP65 Transmitter + IP68 sensor (remote)

2

Transmitter

Square

A

Round

B