Wafer Electromagnetic Flow Meter from China Manufacturer

Products list

Tag Cloud

Introduction

Application

Technical Data

Installation

Introduction

Wafer electromagnetic flow meter is a kind of volume flow meter. It uses a new generation of special high-quality lining technology and a special mirror-polished PFA lining, which is especially suitable for the measurement of viscous pulp and gypsum slurry. Its detachable electrode makes maintenance more convenient.

Principle of Wafer electromagnetic flow meter : The product is based on Faraday's law of electromagnetic induction, used to measure the conductance greater than 20 μS/cm volume of conductive liquid flow. In addition to measuring the general volume of conductive liquid flow, but also can be used to measure strong acid, alkali and other strong corrosive liquids and mud, pulp, etc.

Advantages

Wafer Electromagnetic Flow Meter Advantages and Disadvantages
Wafer electromagnetic flow meter has short body, it can be installed in narrow areas such as well, ditch, irrigation pipe, etc.
It matches all flanges like ANSI, DIN, JIS, etc. So if you don’t know the flange standards, you can choose this type.
And wafer electromagnetic flow meter adopts harmless and durable stainless steel as raw material(SS304 or SS316), so it can be used for drinking water, underground water, etc. For food grade measurement, we suggest customer use SS316 material.
Wafer Electromagnetic flow meter is also very cheap, normally it is cheaper 10% than same diameter electromagnetic flow meter with flange connection.
Wafer electromagnetic flow meter is easy to delivery, save your freight fee. Not only its body is short and thin, but its weight is also very light.
It has multiple output signals for choose. It has current output and pulse output for connecting with PLC or other devices. And you can also read flow measurement by RS485/HART/Profibus

Application

Wafer Electromagnetic Flow Meter Application
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.

Water Treatment

Food Industry

Pharmaceutical Industry

Petrochemical

Paper Industry

Chemical Monitoring

Metallurgical Industry

Public Drainage

Coal Industry

Technical Data

Table 1: Wafer Electromagnetic Flow Meter Specification

Size	DN25mm-DN200mm
Nominal Pressure	1.6Mpa
Accuracy	±0.5%(Standard) ±0.3% or ±0.2%(Optional)
Liner	PTFE, FEP, PFA
Electrode	SUS316L, Hastelloy B, Hastelloy C, Titanium, Tantalum, Platinum-iridium
Structure Type	Integral type, remote type, submersible type, ex-proof type
Medium Temperature	-20~+60degC(Integral type)
Medium Temperature	Remote type(PTFE/PFA/FEP) -10~+160degC
Ambient Temperature	-20~+60degC
Ambient Humidity	5~90%RH(relative humidity)
Measuring Range	0.5m/s-15m/s
Conductivity	>5us/cm
Protection Class	IP65(Standard); IP68(Optional for remote type)

Output Signal	4-20mA, pulse/frequency, relay
Communication	MODBUS RTU RS485, HART(Optional), GPRS/GSM(Optional)
Power Supply	AC220V(Can be used for AC85-250V) DC24V(Can be used for DC20-36V) DC12V(Optional),Battery Powered 3.6V(Optional)
Power Consumption	<20W
Explosion Proof	ATEX Exdll T6Gb

Table 2: Wafer Electromagnetic 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
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	28.260	70.650	84.78	105.98
65	1.19	2.39	5.97	11.94	47.76	119.40	143.3	179.10
80	1.81	3.62	9.04	18.09	72.35	180.86	217.0	271.30
100	2.83	5.65	14.13	28.26	113.04	282.60	339.1	423.90
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	763.0	953.78
200	11.3	22.61	56.52	113.04	452.16	1130.40	1356	1696
Suggest Velocity: 0.5m/s - 15m/s

Table 3: Wafer Electromagnetic Flow Meter Size

Diameter	φA(mm)	φB(mm)	φC(mm)	H(mm)	L(mm)
DN25	60.5	68	22	295	100
DN32	68.5	76	30	303	100
DN40	74.5	89	36	316	100
DN50	90.8	102	48	329	100
DN65	109.8	119.5	64	346.5	150
DN80	120.7	133	77	360	150
DN100	150.2	159	102	386	150
DN125	174.8	190	121	417	200
DN150	204.7	219	147	446	200
DN200	257.8	273	207	500	200

Table 4: Wafer Electromagnetic Flow Meter Selection

QTLD		XXX	X	X	X	X	X	X	X	X

Caliber	DN25mm-DN200mm	1
Nominal Pressure	1.6Mpa		1
Connection mode	Clamp connection			1
Liner material	PTFE				1
	FEP				2
	PFA				3
Electrode material	316L					1
	Hastelloy B					2
	Hastelloy C					3
	Titanium					4
	Platinum-iridium					5
	Tantalum					6
	Stainless steel covered with tungsten carbide					7
Structure type	Integral type						1
	Remote type						2
	Remote type immerse						3
	Integral type Ex-proof						4
	Remote type Ex-proof						5
Power	220VAC							E
	24VDC							G
output communication	Flow volume 4-20mADC/pulse								A
	Flow volume 4-20mADC/RS232 communication								B
	Flow volume 4-20mADC/RS485 communication								C
	Flow volume HART output/with communication								D
Converter figure	Square									A
	Circular									B

Installation

Wafer Electromagnetic Flow Meter Installation & Maintainance
1. Installation
First of all, we need choose a pair of matching flanges. Then connect the flow meter with pipeline.
Wafer electromagnetic flow meter should be installed correctly to ensure good measurement. Normally we need leave 10D(10 times of diameter) straight pipe distance before wafer electromagnetic flow meter and 5D behind wafer electromagnetic flow meter.
And try to avoid elbow/valve/pump or other device which will influent the flow speed. If the distance is not enough, then please install flow meter according to follow picture.

lnstall at the lowest point and vertical upward direction Don't install at the highest point or vertical downward diection	When drop is more than 5m, install exhaust valve at the downstream
lnstall at the lowest point when used in open drain pipe	Need 10D of upstream and 5D of downstream
Dont' install it at the entrance of pump, install it at the exit of pump	lnstall at the rising direction

2. Maintenance
Routine maintenance: only need to make periodic visual inspections of the instrument, check the environment around the instrument, remove dust and dirt, ensure that no water and other substances enter, check whether the wiring is in good condition, and check whether there are newly installed strong electromagnetic field equipment or newly installed wires near the instrument Cross-instrument. If the measuring medium easily contaminates the electrode or deposits in the measuring tube wall, it should be cleaned and cleaned regularly.