Elektromagnetic flow meters

Flow meters with W or Wss flow tube – wafer design

Flow meters with “W” flow tube /Wafer/

These sensors are designed to be installed between flanges. The flowtubes are installed between two connecting flanges and tightened with bolts. They come in inner diameters from DN10 to DN150 while they have shorter installation lengths than the F (flanged) flowtubes with the same diameters. The maximum allowable pressure of these sensors is PN25.

These flowtubes are only made with Teflon liner, and with a choice from several sensing electrode materials (316L stainless steel, Hastelloy C, titanium, tantalum,…).

The flowtube contact faces have spigots that align with recesses in the connecting flanges. This arrangement ensures precise flowtube centering within the pipe thus eliminating any potential metering errors from flowtube improper installation. It is therefore useful to order the flow meters with our original installation sets that contain flanges with appropriate recesses. These flanges are also fitted with connecting terminals for earthing conductors. Installation sets may also be custom specified with respect to installation length and type of connection (DIN 11851 threading for food industry, DIN 32676 clamp, etc.)
Earthing rings are also available on request. This guarantees flawless flow meter operation at all times even for installations in plastic pipework.
All materials to be in contact with the medium under measurement are certified for permanent contact with drinking water (edibles) and hot utility water.
Our flow meters are thus convenient for all kinds of food processing applications to measure flow of drinking water, wine and related products, milk, whey, beer, and other food consumables. Besides other, they resist cleaning lyes or acids that are used in such applications on a daily basis. They furthermore meet specific requirement in most chemical facilities.

_

Flow meters with “Wss” flow tube /Wafer stainless steel/

The Wss (Wafer, stainless steel) flow meters have the same dimensions and parameters as the previous W-type flow meters. They too are designed to be installed between flanges. They are installed between two connecting flanges and tightened with bolts. Their flowtubes are only made with Teflon liner and with a choice from several sensing electrode materials (316L stainless steel, Hastelloy C, titanium, tantalum,…).

The difference is only in the sensor housing that is made of stainless steel. Therefore, these sensors are more suitable for measuring chemically aggressive liquids and for installation in corrosive and otherwise demanding environments.

They are made with inner diameters from DN10 to DN100 are are primarily designed for chemical and food processing applications.

The components in installation sets are all made of stainless steel. Installation sets may equally be custom specified with respect to installation length and type of connection (DIN 11851 threading for food industry, DIN 32676 clamp, etc.)

Earthing rings are also available if required.

All materials to be in contact with the medium under measurement are certified for permanent contact with drinking water (edibles) and hot utility water.

These flow meters are convenient to measure acid or alkaline solutions as well as various kinds of chemicals (lyes, acids, ammonia, hydrogen chloride, cleaning agents, …).

FG4000 flow meter specifications:

Transducer:COMFORTECONOMIC
Display:YES (2x16 chars)NO
Keypad:YESNO
Measuring range:1 :40 ( ±0,5% for MPE standard); 1:500 (Q0=0,2% Qmax)
Accuracy:± 0.5 % (± 0.003 m/s) in range from Qmin do Qmax
Minimum liquid conductivity:>5ųS/cm – common liquids; ≥20ųS/cm – demineralized water
Power supply:230 VAC (+10;−15%) 50–60Hz; optionally 120VAC, 24VAC, 24VDC
Power demand:10 VA
IEC 536 protection class:I
Ingress protection rating:IP67
Meter finish:powder paint (RAL 8023)
Ambient temperature rangé:0–70°C; recommended 15–55°C
Pulse output 1:in range 0.0001–1600 p/dm3 (maximum value depends on flowtube inner diameter)
Pulse output 2:state – signalization of the negative flow; pulse – negative volume (bidirectional flow)
Pulse inputs:2× range (0.0001–1000 p/dm3) to display flow and/or volume measured by external
Empty pipeline indication:yes (optional)
Communication modules:RS485, RS422, RS232, M-Bus, ... (optional)
Communication protocols:SIMPLE, ModBUS, BitBUS, ASCII , MBUS
Analogue outputs:4-20 mA, 0-10 V (optional)
Archive:hourly, daily, monthly, errors,.. (optional)

Wafer flowtube specification:

Flowtube nominal inner diameter:DN10 – DN150 (W-type)
DN10 - DN100 (Wss-type)
Flowtube liner:PTFE – teflon
Electrodes:316L grade (1.4571) stainless steel; Hastelloy C; platinum; tantalum; titanium
Nominal pressure:PN25
Flowtube design:compact; split – 4m cabling (optionally up to 40m)
Flowtube finish:powder paint RAL 7043 (W-type)
brushed stainless steel (Wss-type)
Temperature of the measured liquid0 - 150°C
Ingress protection rating:IP67

Table of included inner diameters:

FG 4000Wafer flowtubes „W“
Wafer flowtubes „Wss“
DN101520253240506580100125150
Q0 (m3/h)0,010,020,030,040,070,110,170,290,430,681,061,53
Q1 (m3/h)0,080,190,340,530,871,362,123,585,438,4813,219,1
Q3 (m3/h)3,397,6313,621,234,754,384,8143217339530763
k(Imp/dm3)160070040020015010060352515107

Legenda:

DN– Flowtube nominal inner diameter
Q0– Starting flow
Q1– Minimal flow
Q3– Maximal flow
k– Maximal constant of flow conversion

Diameters and mass of wafer sensors:

DNPNA∅B∅CDEFBolts (Svorníky)m [kg]
1025100 (66)751052507575M12x1704x4,5
1525100 (66)751052507575M12x1704x5
2025100 (66)75105300100100M12x1704x5
252510085115350125125M12x1704x5,7
3225100100135360160100M16x1754x6,5
4025100110145420200120M16x1754x6,7
5025110 (108)125160510250150M16x1754x7,5
6525110145180630325195M16x1954x8,5
8025160 (163)160195800400240M16x1958x10,5
10025160 (162)190230960500300M20x2458x12,5
125251902202701190625375M24x3008x14
150251902503001390750450M24x3008x18

Legend:

DN – Inner diameter of the sensor
PN – Maximum allowable pressure
A – length of the sensor
∅B – Diameter of a pitch circle of a flange’s installation holes
∅C – Outside diameter of the installation flange
D – Whole length of the flow sensor with installation set
E, F – Lengths of a calming pipes
Bolts – Dimensions and number of fixing bolts
m – Sensor weight