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Home Parts Flow Meter CategorySVF LZ Series Metallic Tube Variable Area Flow Meter

SVF LZ Series Metallic Tube Variable Area Flow Meter

Flow Meter

SVF LZ Series Metallic Tube Variable Area Flow Meter

SVF LZ Series Metallic Tube Variable Area Flow Meter Transmits Flow via Magnetic Coupling Drive System

The SVF LZ-Series metallic tube variable area flow meter is a flow measuring instrument used for measuring the instantaneous flow rate and cumulative flow of fluids (liquids, gases, and steam) through a closed conduit. It can provide local indication as well as transmit signals remotely.

This flow meter is widely used in various industries such as petroleum, chemical, water treatment, food, pharmaceutical, papermaking, and others due to its simple structure, ease of maintenance, and long service life.

If the fluid contains ferromagnetic particles, a magnetic filter should be installed at the entrance of the flow meter. If the inlet flow (pressure) of the flow meter is unstable, a damping device manufactured with high technology may be installed on the measuring component to ensure long-term stable and reliable use for the measurement of clean gases.

Specifications
Working Principle
Structure
Video

Specification

Technical Parameter

Measure Range	Water (20°C): 2.5–150000 L/h, Air (20°C, 101325 Pa): 0.07–3000 Nm³/h
Range Ratio	10:1
Accuracy Grade	1.5, 2.5
Fluid Working Pressure	DN15–DN50: 4.0 MPa, DN80–DN150: 1.6 MPa
Working Pressure of Coating	1.6 MPa
Fluid Working Temperature	-80 °C to 200 °C (PTFE ≤ +85 °C), high temperature type ≤ 400 °C
Connection Type	Flange connection, Thread connection or Tri-clamp connection flange refer to standard GB/T9119; ANSI 150Ibs, 300Ibs; HG20592–20635; Other standard flange can be made to the user requirement.
Environment Temperature	-25 °C to +55 °C
Medium Viscosity	DN15 ≤ 5 mPa.S; DN25–DN100 ≤ 250 mPa.S
Electricity Signal Output	Output Signal: (4–20 mA), Linear Accuracy: 0.5%, Temperature influence: 0.5% / 10 °C, Power Supply: (13–30) V DC, Power Supply Consume: ≤ 250 mW
Restrict Alarm	Power Supply:24 (10%) V DC, Power Loss: ≤ 3W, Working Temperature:-25 °C to +60 °C
Explosion-Proof Grade	Ex lb II CT5

Flow Rate Reference

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Table 1: SVF LZ Series Metallic Tube Variable Area Flow Meter Flow Rate Reference
Nominal Diameter (mm)	Water 20 °C 101325 Pa (L/h)		Air 20 °C 101325 Pa (m³/h)	Maximum Pressure Loss (kPa)		Accuracy (±%)	Working Pressure (MPa)
Nominal Diameter (mm)	RRO, RR1, RL	PTFE	RRO、RR1、RL	RRO, RR1, RL	PTFE	Accuracy (±%)	Working Pressure (MPa)
15	1.6–16	–	0.05–0.5	6.5	–	±1.5	≤4.0
15	2.5–25	–	0.07–0.7	6.5	–	±1.5	≤4.0
15	4–40	2.5–25	0.12–1.2	6.5	5.5	±1.5	≤4.0
15	6–60	4–40	0.18–1.8	6.6	5.5	±1.5	≤4.0
15	10–100	6–60	0.3–3	6.6	5.6	±1.5	≤4.0
15	16–160	10–100	0.4–4	6.8	5.8	±1.5	≤4.0
15	25–250	16–160	0.7–7	7.2	6.1	±1.5	≤4.0
15	40–400	25–250	1.0–10	8.6	6.1	±1.5	≤4.0
15	60–600	40–400	1.5–15	11.1	7.3	±1.5	≤4.0
15	80–800	60–600	2.5–25	11.1	7.3	±1.5	≤4.0
15	100-1000	80–800	3.0–30	11.1	7.3	±1.5	≤4.0
20	40–400	40–400	0.75–7.5	8.6	6.1	±1.5	≤4.0
20	60–600	60–600	1.2–12	11.1	7.3	±1.5	≤4.0
20	100–1000	100–1000	1.8–18	11.1	7.3	±1.5	≤4.0
25	40–400	40–400	1.0–10	6.5	5.9	±1.5	≤4.0
25	60–600	50–500	1.5–15	6.5	6.2	±1.5	≤4.0
25	80–800	60–600	2.5–25	7	7	±1.5	≤4.0
25	100–1000	80–800	4–40	7	5.9	±1.5	≤4.0
25	160–1600	100–1000	5–50	8	6	±1.5	≤4.0
25	250–2500	160–1600	6–60	10.8	6.8	±1.5	≤4.0
25	400–4000	250–2500	8–80	15.8	9.2	±1.5	≤4.0
25	500–5000	400–4000	10–100	16.2	11	±1.5	≤4.0
25	600–6000	500–5000	15–150	16.5	12	±1.5	≤4.0
32	160–1600	160–1600	3–30	8	6	±1.5	≤4.0
32	250–2500	250–2500	5–50	10.8	6.8	±1.5	≤4.0
32	400–4000	400–4000	7.5–75	15.8	9.2	±1.5	≤4.0
32	600–6000	600–6000	–	16.5	12	±1.5	≤4.0
40	400–4000	400–4000	3–30	8	6.5	±1.5	≤4.0
40	600–6000	600–6000	5–50	11	6.8	±1.5	≤4.0
40	1000–10000	1000–10000	7.5–75	16.2	9.4	±1.5	≤4.0
50	600–6000	400–4000	18–180	8	6.5	±1.5	≤4.0
50	1000–10000	600–6000	25–250	11	6.8	±1.5	≤4.0
50	1600–16000	1000–10000	40–400	16.2	9.4	±1.5	≤4.0
50	2000–20000	1600–16000	50–500	17	14.5	±1.5	≤4.0
50	2500–25000	2000–20000	60–600	19	16.5	±1.5	≤4.0
65	1200–12000	1200–12000	18–180	8.2	6.9	±1.5	≤1.6
65	1600–16000	1600–16000	30–300	8.2	6.9	±1.5	≤1.6
65	2500–25000	2500–25000	37–370	15.5	11.9	±1.5	≤1.6
80	1600–16000	1000–10000	50–500	8.2	6.9	±1.5	≤1.6
80	2500–25000	1600–16000	60–600	15.5	11.9	±1.5	≤1.6
80	4000–40000	2000–20000	100–1000	20	16.1	±1.5	≤1.6
80	5000–50000	2500–25000	150–1500	25	18.1	±1.5	≤1.6
100	4000–40000	2000–20000	100–1000	8.4	8.1	±1.5	≤1.6
100	5000–50000	2500–25000	150–1500	11.2	9.1	±1.5	≤1.6
100	6000–60000	4000–40000	180–1800	20	16.5	±1.5	≤1.6
100	8000–80000	5000–50000	240–2400	25.4	22.2	±1.5	≤1.6
100	10000–100000	8000–80000	300–3000	32	29.2	±1.5	≤1.6
125	10000–100000	8000–80000	300–3000	42	38.5	±1.5	≤1.6
125	25000–125000	10000–100000	–	45	42	±1.5	≤1.6
150	12500–125000	10000–100000	–	45	42	±1.5	≤1.6
150	15000–150000	12500–125000	–	60	58	±1.5	≤1.6
Note: To ensure variable-area flow meter working stability,it should be assured that working pressure not less than double of max loss of pressure when flow meter used to measure liquid; when you measured medium is air, it should be assured that working pressure not less than five times of max loss of pressure; Above measuring range is for reference only, you can select other measuring ranges according to range ratio 10:1; Flow meter can be special made for you as per medium density, viscosity, temperature, pressure and other parameters you supply.

Drawings & dimensions

A dimension drawing of bottom-in side-out SVF LZ series metallic tube variable area flow meter.

Table 2: SVF LZ Series Flow Meter Dimensions – Bottom in Side Out
DN	H (mm)	L (mm)	L1 (mm)
15	350	250	120
20	350	250	120
25	350	250	120
32	350	250	120
40	350	250	120
50	600	250	120
65	600	250	120
80	700	250	150
100	700	250	150

A dimension drawing of side-in side-out SVF LZ series metallic tube variable area flow meter.

Table 3: SVF LZ Series Flow Meter Dimensions – Side in Side Out
DN	H (mm)	L (mm)	L1 (mm)
15	500	250	120
20	500	250	120
25	500	250	120
32	500	250	120
40	500	250	120
50	650	250	120
65	650	250	120
80	800	300	150
100	800	300	150

A dimension drawing of horizontal SVF LZ series metallic tube variable area flow meter.

Table 4: SVF LZ Series Flow Meter Dimensions – Horizontal
DN	H (mm)	L (mm)
15	430	250
20	430	250
25	450	250
32	450	250
40	450	250
50	540	350
65	540	350
80	540	400
100	540	400

A dimension drawing of new horizontal SVF LZ series metallic tube variable area flow meter.

Table 5: SVF LZ Series Flow Meter Dimensions – New Horizontal
DN	H (mm)	L (mm)
15	250	160
20	250	160
25	250	160
32	250	160
40	250	160
50	250	160
65	250	160
80	250	160
100	300	160

A dimension drawing of jacket flange connection SVF LZ series metallic tube variable area flow meter.

Table 6: SVF LZ Series Flow Meter Dimensions – Jacket Flange
DN	H (mm)	L1 (mm)	L2 (mm)	L3 (mm)
15	250	84	116	150
20	250	84	116	150
25	250	95	128	150
32	250	99	132	150
40	250	99	132	150
50	250	111	144	150
65	250	111	144	150
80	250	130	183	150
100	250	146	179	150

Working Principle

Structure

Videos

Downloads

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DN	H (mm)	L (mm)	L1 (mm)
15	350	250	120
20	350	250	120
25	350	250	120
32	350	250	120
40	350	250	120
50	600	250	120
65	600	250	120
80	700	250	150
100	700	250	150

DN	H (mm)	L (mm)	L1 (mm)
15	500	250	120
20	500	250	120
25	500	250	120
32	500	250	120
40	500	250	120
50	650	250	120
65	650	250	120
80	800	300	150
100	800	300	150

DN	H (mm)	L (mm)
15	430	250
20	430	250
25	450	250
32	450	250
40	450	250
50	540	350
65	540	350
80	540	400
100	540	400

DN	H (mm)	L (mm)
15	250	160
20	250	160
25	250	160
32	250	160
40	250	160
50	250	160
65	250	160
80	250	160
100	300	160

DN	H (mm)	L1 (mm)	L2 (mm)	L3 (mm)
15	250	84	116	150
20	250	84	116	150
25	250	95	128	150
32	250	99	132	150
40	250	99	132	150
50	250	111	144	150
65	250	111	144	150
80	250	130	183	150
100	250	146	179	150

DN	H (mm)	L (mm)	L1 (mm)
15	350	250	120
20	350	250	120
25	350	250	120
32	350	250	120
40	350	250	120
50	600	250	120
65	600	250	120
80	700	250	150
100	700	250	150

DN	H (mm)	L (mm)	L1 (mm)
15	500	250	120
20	500	250	120
25	500	250	120
32	500	250	120
40	500	250	120
50	650	250	120
65	650	250	120
80	800	300	150
100	800	300	150

DN	H (mm)	L (mm)
15	430	250
20	430	250
25	450	250
32	450	250
40	450	250
50	540	350
65	540	350
80	540	400
100	540	400

DN	H (mm)	L (mm)
15	250	160
20	250	160
25	250	160
32	250	160
40	250	160
50	250	160
65	250	160
80	250	160
100	300	160

DN	H (mm)	L1 (mm)	L2 (mm)	L3 (mm)
15	250	84	116	150
20	250	84	116	150
25	250	95	128	150
32	250	99	132	150
40	250	99	132	150
50	250	111	144	150
65	250	111	144	150
80	250	130	183	150
100	250	146	179	150

DN	H (mm)	L (mm)	L1 (mm)
15	350	250	120
20	350	250	120
25	350	250	120
32	350	250	120
40	350	250	120
50	600	250	120
65	600	250	120
80	700	250	150
100	700	250	150

DN	H (mm)	L (mm)	L1 (mm)
15	500	250	120
20	500	250	120
25	500	250	120
32	500	250	120
40	500	250	120
50	650	250	120
65	650	250	120
80	800	300	150
100	800	300	150

DN	H (mm)	L (mm)
15	430	250
20	430	250
25	450	250
32	450	250
40	450	250
50	540	350
65	540	350
80	540	400
100	540	400

DN	H (mm)	L (mm)
15	250	160
20	250	160
25	250	160
32	250	160
40	250	160
50	250	160
65	250	160
80	250	160
100	300	160

DN	H (mm)	L1 (mm)	L2 (mm)	L3 (mm)
15	250	84	116	150
20	250	84	116	150
25	250	95	128	150
32	250	99	132	150
40	250	99	132	150
50	250	111	144	150
65	250	111	144	150
80	250	130	183	150
100	250	146	179	150