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Overview
LZDC Series Variable-area Flowmeter with Metallic Measuring Tube can also be
called metal-tube rotameter, it has the following advantages, simple
construction and convenient maintain, wide adaption which can be used to
measure the flow of liquids and gas. Compared with glass-tube rotameter, this
type has the characteric of high temperature and pressure resistance, high
security, easily read, and etc. It also can be used to measure the flow of
corrosive medium and opaqueness medium. The meter pipe and flange are
made of lcrl8Ni9Ti or 18Ni12Mo2Ti. The floater is made of stainless steel. If the
floater and lining are both corrosion resistant, it is bag lining PTFE.

 

Working principle
Variable-area Flowmeter with Metallic Measuring Tube is made up of two parts,
flow sensor and flow indicator( picture 1) Floater is installed inside the conical
measuring pipe. Because of the function of the fluid, it can be shifted freely up
and down in the conical pipe. The biggest outer diameter of the floater and the
annular area of the tapered tube change with the location of the floater. When
the flow rate of the fluid is stable to one number, the floater is also in a dynamic
balance. By the flow indicator connected with the taper measuring tube, the
magnetic signal of the floater would be delivered by non-contact way, that is to
say, the indicator can detect and deal with the flow value by the way of
magnetism delivery and finally show the flow value by the pointer, which is
showed on the dial of. At the same time, LCD can also read the instantaneous or
the accumulated flow value, and output the standard two wire ( 4-20 ) mA signal
/HART protocol.

 

Meter Data

Meter Model

LZDC

Measuring medium

Liquids,gas,steam

Measuring range

(100% flow-rate)

Water:20℃

(10-300000)L/h,Particular requirement are acceptable

Air:0.1013MPa, 20℃

(0.7-3000)m3/h, Particular requirement are acceptable

Range ability

1:10

Accuracy class

Locally type

Mechanical pointer index

1.5,2.0,2.5

Digital display(battery powered,service life:2years)

1.0,1.5,2.0,2.5

Remote Transmitting Type:show mechanical pointer index and Digital display

(battery powered,service life:2 years) at the same time

1.0,1.5,2.0,2.5

Medium temperature

Locally type

Mechanical pointer index

-80℃～+300℃, Hightemperature: 400℃

Digital display(battery powered,service life:2years)

-40℃～+150℃

 

Remote Transmitting Type:show mechanical pointer index and Digital display

(battery powered,service life:2 years) at the same time

 

-40℃～+150℃, Hightemperature: 400℃

Ambient temperature

Locally type

Mechanical pointer index

-40℃～+120℃

Digital display(battery powered,service life:2years)

-20℃～+60℃

 

Remote Transmitting Type:show mechanical pointer index and Digital display

(battery powered,service life:2 years) at the same time

 

-20℃～+60℃

Nominal pressure

DN15～DN50

4.0MPa(biggest:DN15:32MPa, DN25:25MPa, DN50:20MPa)

DN80～DN200

1.6MPa(biggest:DN80:10MPa, DN100:6.4MPa, DN125:4.0MPa,

DN150:4.0MPa, DN200:2.5MPa, DN250:2.5MPa)

Measuring tube

Flange connection,standard:DIN2501、ANSI、HG20617/HG20615,according to order standard

Cable connector

M20×1.5   1/2”G    1/2”NPT  3/4”G   3/4”NPT

Installment type

vertical(end into top),horizontal ( left into right, right into left), top into end( piping), (end into side, side into side)

Entrance straight pipe

≥5D

Exit Straight pipe

≥250mm

Protection Grade

IP65   IP67(others needs to be explained when ordering)

Anti-explosion Mark

Ex ia Ⅱ CT1-T6

Ex d Ⅱ CT6

 

 

External form size & Flange size

                                                                                                                 Requirement of particular install size can also be made

Caliber(mm)

H

H1

B

J1 J5 RF

J2

J3

J4

J2

J3

J4

J3  J4

15

250

200

160

160

400

450

480

100

20

250

200

160

160

400

450

480

100

25

250

200

160

160

400

450

480

100

32

250

200

160

160

400

450

480

100

40

250

200

160

250

400

450

480

100

50

250

250

200

250

400

500

560

120

65

250

250

200

250

400

520

580

120

80

250

300

200

250

400

550

600

160

100

250

300

250

300

400

600

650

180

125

400

350

300

350

400

650

700

250

150

400

350

350

350

500

650

700

250

200

500

450

400

450

650

700

-

300

250

500

500

400

550

800

750

-

300

 

Caliber(mm)

Flange size(standard ANSI B 16.5 150 IbRF)

Caliber/pressure

Flange size(Standard DIN 2501)

DN

D

k

d3

f

n

d2

DN/PN

D

k

d3

f

n

d2

1/2〃

88.9

60.5

35.1

1.6

4

15.7

15/4.0

95

65

45

1.5

4

14

3/4〃

98.6

69.9

42.9

1.6

4

15.7

20/4.0

105

75

55

1.5

4

14

1〃

108.0

79.2

50.8

1.6

4

15.7

25/4.0

115

85

65

1.5

4

14

1-1/4〃

117.3

88.9

63.5

1.6

4

15.7

32/4.0

140

100

76

1.5

4

18

1-1/2〃

127.0

98.6

73.2

1.6

4

15.7

40/4.0

150

110

86

1.5

4

18

2〃

152.4

120.7

91.9

1.6

4

19.1

50/4.0

165

125

100

2.0

4

18

2-1/2〃

177.8

139.7

104.6

1.6

4

19.1

65/1.6

185

145

120

2.0

4

18

3〃

190.5

152.4

127.0

1.6

4

19.1

80/1.6

200

160

136

2.0

8

18

4〃

228.6

190.5

157.2

1.6

8

19.1

100/1.6

220

180

156

2.0

8

18

5〃

254.0

215.9

185.7

1.6

8

22.4

125/1.6

250

210

186

2.0

8

18

6〃

279.4

241.3

215.9

1.6

8

22.4

150/1.6

285

240

212

2.0

8

22

8〃

342.9

298.5

269.7

1.6

8

22.4

200/1.6

340

295

268

2.0

12

22

10〃

406.4

362.0

323.9

1.6

12

25.4

250/1.6

405

355

320

2.0

12

26

 

 

How to choose indicator

M1 indicator

  ●  With magnetic coupling, the displacement of magnetic floater

in measuring tube can be transmitted into flow value directly, and

  ●  Stamp forming of Stainless steel;

  ●  Surface polishing Mechanical pointer can show the flow

immediately. It has compact and artistic structure.

M2 indicator

  ●  It can be showed by pointer and dial system, and be outputted

by being transmitted into electrical signal.

  ●  Digital integrated design-multifunctional flow board;

  ●  Modular design. The combination of flow instructions in place,

long distance transmission, accumulation, and alarm are optional.

  ●  LCD can show the instantaneous flow, cumulative flow and

percentile flow instantly;


  ●  (4-20)mA two-wire superposition HART agreement digital

communications.

  ●  Full- featured key operation and on- the- spot instrument

parameter settings.

  ●  Manual operator/ PC configurable software remote

configuration.

The function of intrinsically safe and flameproof security;

  ●  One or two whole-course adjustable threshold alarm switch

output (optional);

  ●  Can be applied directly in high-temperature environment.

 

 

 

 

 

 

Modeling Code

1．Meter model : LZDC

2．diameter : code

Code

015

025

040

050

080

100

125

150

200

250

DN

15

25

40

50

80

100

125

150

200

250

3．Installment type

J  1

Vertically installed

J  2

Horizontal installed

J  3

End into side 

J  4

Side into Side

J  5

Top into End

4．Installment connection

F

Flange (common specification are G B or D I N, H G, A N S I, J I S can be chosen)

L

Thread

K

Clamp sanitary type

5．Measuring plpe's materials

R1

304(1Cr18Ni9Ti)

R0

316(0Cr18Ni12Mo2Ti)

R00

316L(00Cr17Ni14Mo2)

RF

304 with PTFE lining

Others

Hostelry,Titanium Alloy,Aluminum Alloy,Picks Alloy,Copper Alloy,etc.

6．Indicator's type

M1

 

Locally indicator, Stainless steel compression molding,
Surface polishing wiredrawing processing, Sanitary

M2

Locally indicator, Aluminum compression molding, Polyurethane epoxy paint  

M3/ES4

Output type LCD (4-20 mA current)

M2/ES4

Output type LCD (4-20 mA current)

M2/HAPT

Output type LCD (4-20 mA current), HART agreement digital

communication)

M2/B

 

3.6 V Lithium battery supply, LCD show the instant flow and accumulated
flow rate.

7．Blast proof type

N

No requirements for anti-explosion (omission)

EXi

Exib Ⅱ CT1-T6

EXd

Exib Ⅱ CT6

8．Measuring Medium

L

liquids

G

gas

9.Measuring tube's additional function(optional)

T

Temperature protection clip set

10．Indicator's additional function(optional)

KG22

alarm atKE1's lower limit,alarm at KE2's upper limit

KG23

alarm atK1's lower limit,alarm at K2's upper limit

KG24

alarm atKR1's lower limit,alarm at KR2's upper limit

11．High-temperature type (optional)

H1

Medium's temperature: 120°C--160°C

H2

Medium's temperature: 160°C--250°C

H3

Medium's temperature: 250°C--400°C

                    ①        ②   ③  ④ ⑤   ⑥  ⑧
Example LZDC /050/J1 /F/R1 /M2/L
①Metal-tube rotameter      ②Dn50                  ③Vertically installed type      ④Flange connection

⑤304ss measuring tube     ⑥M2 indicator     ⑧Liquids

 

 

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