Metal Tube Rotameter

LZDC Series Metal Tube Rotameter has the features of simple construction, reliable work, wide scope of adaptation, high accuracy and easy installation, etc. Compared with glass tube rotameter, this type has the advantages of high – pressure resistance, explosion – proof, and corrosion – resistance. It can be used to measure the flow of corrosive medium and open – pressure medium. The meter tube and flange are made of 1Cr18Ni9Ti or 0Cr18Ni12Mo2Ti. The float is made of stainless steel. The lining of anti – corrosive float and tube is PTFE.

 

Operating Principle

Metal tube rotameter is made up of two parts, flow sensor and flow indicator(picture 1). Float is installed inside the conical measuring tube. Because of the function of the fluid, it can shift freely up and down inside. There is a high – performance permanent magnetic steel inside the float. When float shifts up and down, the surrounding magnetic field of magnetic field changes. Once the flow rate becomes stable, the float comes into a dynamic balance and same as the surrounding magnetic field. By the flow indicator connected to the conical measuring tube, the magnetic field of float can be transferred to the indicator in a non – contact way, that is to say, the indicator can detect and deal with the flow by the way of magnetization transfer, and finally show the flow value with the pointer. 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 and HART protocol.

 

Technical Parameters

Meter item code LZDC
Measuring medium Liquids, gas, steam
Measuring range (100% flow – rate) Water: 20℃ (10 – 300000)L/h, Can be customized
Air: 0.1013Mpa, 20℃ (0.7 – 900)m³/h, Can be customized
Range ability 10:1
Accuracy Grade Local Type Mechanical pointer index 1.5, 2.0, 2.5
Digital display(battery powered) 1.0, 1.5, 2.0, 2.5
Remote Transmitting Type: show mechanical pointer index and Digital display at the same time. 1.0, 1.5, 2.0, 2.5
Medium temperature Local Type Mechanical pointer index – 80℃~300℃, Hightemperature:400℃
Digital display(battery powered) – 40℃~150℃
Remote Transmitting Type: show mechanical pointer index and Digital display at the same time. – 40℃~150℃, Hightemperature:400℃
Ambient temperature Local Type
Digital display(battery powered) – 20℃~60℃
Remote Transmitting Type: show mechanical pointer index and Digital display at the same time. – 20℃~60℃
Nominal pressure DN15 – DN50 4.0Mpa (biggest: DN15: 32Mpa, DN 25: 25Mpa, DN50: 20Mpa)
DN80 – DN150 1.6Mpa(biggest:DN80: 10Mpa, DN100: 6.4Mpa,DN125:4.0 Mpa)
Measuring tube Flange connection, standard:DIN2501, ANSI, HG20617/HG20615, according to order standard
Cable connector M20×1.5, 1/2″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 can be customized)
Explosive – proof Standard Ex ii CT1 – T6
Ex d II CT1 – T6

Dimensions & Flange

Size Particular install size can be customized.

Caliber(mm) H ΦD H1
J1 J1(RF)J4 J2 J3 J1/K J1/K J2
15 250 200 250 250 50.5(25.4) 400
20 250 200 250 250 50.5 400
25 250 200 250 250 50.5 400
32 250 200 250 250 50.5 400
40 250 200 250 250 50.5 400
50 250 250 250 250 64 400
65 250 250 250 250 77 400
80 250 300 250 250 106 400
100 250 300 250 250 119 400
125 250 350 250 250 155 500
150 250 350 250 250 183 500

 

Caliber(mm) Flange size(standard ANSI B 16.5 150 lbRF) 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 1.5 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 80/1.6 200 160 135 2.0 4 18
4″ 228.6 190.5 157.5 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
10″ 406.4 362.0 323.9 1.6 12 25.4

 

 

 

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