Vertical Pointer Variable Area Flowmeter

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Introduction

Application

Technical Data

Installation

Introduction

LZ series intelligent Vertical Pointer Variable Area Flowmeter adopts the international advanced Honeywell without contact and no hysteresis detecting changes in the Angle of magnetic field of magnetic sensor, and with high performance MCU,which can realize LCD display:the instantaneous flow, total flow,loop current.environment temperature,damping time,small signalremoval.Optional 4~20mA tranmission(with HART communication),pulse output, high and low limit alarm output function,etc,the type of intelligent signal transmitter has high precision and reliability,which can fully replace the same type imported instrument, and it also has high price performance, parameter standardization online and power failure protection,etc features.

Advantages

Vertical Pointer Variable Area Flowmeter advantages:
1. Fully welded stainless steel body，Durable using.
2. Independent of medium’s physical and chemical states such as conductivity, dielectric constants, etc.
3. Applicable for all kinds of medium environment such as corrosive, toxic and explosive one.
4. Interface measurement or level measurement of 2 kinds of medium with different density.
5.Easy-to-read displays on all flow meter types）
6.Two-wire 4~20mADC signal output available;

Application

Vertical Pointer Variable Area Flowmeter Applications
Vertical Pointer Variable Area Flowmeter is mainly suitable for small and medium flow measurement of single-phase liquid or gas with small and medium pipe diameter, low noise and Reynolds number of acetic acid,like Air,Water,lubricating oil,Steam,Hydrogen,O2,etc,and many other Liquid or gas in the Chemical,Pharmaceutical, Petrochemical,Food,Metallurgical Industry ,etc.

Water Treatment

Food Industry

Pharmaceutical Industry

Petrochemical

Paper Industry

Chemical Monitoring

Metallurgical Industry

Public Drainage

Coal Industry

Technical Data

Table 1: Vertical Pointer Variable Area Flowmeter Data Sheet

Measuring range	Water (20℃) 16~150000 l/h. Air(0.1013MPa 20℃) 0.5~4000 m3/h.
Range ratio	10:1(Special type 20:1).
Accuracy class	2.5(Special type 1.5% or 1.0%).
Working pressure	DN15~DN50 PN16 (Special type 2.5MPa). DN80~DN150 PN10 (Special type 1.6MPa). Pressure rating of jacket 1.6MPa.
Medium temperature	Normalized type -80℃~+220℃. High-temperature type 300℃. Lined with FEP type ≤85℃.
Ambient temperature	-40℃~+120℃(Remote display without LCD≤85℃). (Remote display with LCD≤70℃).
Dielectric viscosity	1/4” NPT, 3/8” NPT 1/2” NPT≤5mPa.s 3/4” NPT,1” NPT ≤250mPa.s
Output	Standard signal: two-wire system 4 ~ 20mA (with HART communication). Standard signal: three-wire system 0 ~ 10mA. Alarm signal:1.Two-way relay output. 2.One-way or two-approach switches . Pulse signal output: 0-1KHz isolated output.
Process connection	Standard type:24VDC±20%. AC type:220VAC(85~265VAC) (optional).
Connection mode	Flange Thread Tri-clamp
Levels of protection	IP65/IP67.
Ex-mark	Intrinsically safe:ExiaIICT3~6. Exd type:ExdIICT4~6.

Table 2: Vertical Pointer Variable Area Flowmeter Flow Range

Caliber (mm)	Work number	Flow range			Pressure loss kpa
		Water L/h		Air m3/h	Water Kpa		Air
		Normal type	Anti-corrossion type	Normal type Anti-corrossion type	Normal type	Anti-corrossion type	Air
15	1A	2.5~25	--	0.07~0.7	6.5	-	7.1
	1B	4.0~40	2.5~25	0.11~1.1	6.5	5.5	7.2
	1C	6.3~63	4.0~40	0.18~1.8	6.6	5.5	7.3
	1D	10~100	6.3~63	0.28~2.8	6.6	5.6	7.5
	1E	16~160	10~100	0.48~4.8	6.8	5.6	8.0
	1F	25~250	16~160	0.7~7.0	7.0	5.8	10.8
	1G	40~400	25~250	1.0~10	8.6	6.1	10.0
	1H	63~630	40~400	1.6~16	11.1	7.3	14.0
25	2A	100~1000	63~630	3~30	7.0	5.9	7.7
	2B	160~1600	100~1000	4.5~45	8.0	6.0	8.8
	2C	250~2500	160~1600	7~70	10.8	6.8	12.0
	2D	400~4000	250~2500	11~110	15.8	9.2	19.0
40	4A	500~5000	300~3000	12~120	10.8	8.6	9.8
40	4B	600~6000	350~3500	16~160	12.6	10.4	16.5
50	5A	630~6300	400~4000	18~180	8.1	6.8	8.6
	5B	1000~10000	630~6300	25~250	11.0	9.4	10.4
	5C	1600~16000	1000~10000	40~400	17.0	14.5	15.5
80	8A	2500~25000	1600~16000	60~600	8.1	6.9	12.9
80	8B	4000~40000	2500~25000	80~800	9.5	8.0	18.5
100	10A	6300~63000	4000~40000	100~1000	15.0	8.5	19.2
150	15A	20000~100000	--	600~3000	19.2	--	20.3

Table 3: Vertical Pointer Variable Area Flowmeter Model Selection

QTLZ	X	X	X	X	X	X	X	X	X
Indicator	Code
Local indicator	Z
LCD indicator with ouput	D
Norminal diameter		Code
DN15		-15
DN20		-20
DN25		-25
DN40		-40
DN50		-50
DN80		-80
DN100		-100
DN150		-150
Structure			Code
Bottom-top			/
Left-right (horizontal)			H1
Right-left (horizontal)			H2
Side-side			AA
Bottom -side			LA
Thread connection			S
Tri-clamp			M
Body material				Code
304SS				R4
316LSS				R6L
Hastelloy C				Hc4
Titanium				Ti
Liner F46(PTFE)				F
Monel				M
Indicator type					Code
Iinear indicator(pointer indication)					M7
Nonlinear indicator(LCD Display)					M9
Combination function(only for LCD display)						Code
24VDC with 4~20mA output						S
24VDC with HART communication						Z
Battery power						D
Additional function							Code
Measuring tube with thermal preservation / heat insulation jacket							T
Measure medium temperature higher than 120^.C							HT
Ex-proof:								Code
With								W
Without								N
Alarm									Code
One alarm									K1
Two alarm									K2
None									N

Installation

Metal Tube Rotameter Installaion
Installed flowmeter should guarantee the entry ≥5DN straight pipe section，export straight pipe section not less than 250mm ；if the medium containing ferromagnetic material，magnetic filter should be installed in front of the flowmeter。（see magnetic filter and straight pipe section diamension diagram ）

1. For flow meter installed，ensure the measuring pipe perpendicularity is better than 5 and should be equipped with bypass,easy to maintain and clean and does not affect production..
2. Monitoring and control system in the control valve，should be installed downstream of the flowmeter.For gas measurement，Should ensure the working pressure is not less than 5 times of pressure loss of the flowmeter, to make stable work of the flowmeter.
3. Before install the flowmeter，The pipe should be welding slag purging clean；When installation to remove locking component in the flow meter;when used after installation，Slowly open the control valve，Avoid shock damage flow meter