FF metal float flowmeter-Fornitore globale

1st Floor, Building 2, No. 89 Huguang East Road, Meilian Industrial Park, Minhang District, Shanghai (201108)

Principle, structure

The structure of FF metal tube float flowmeter is to install a rotor 2 (or float) made of metal or other materials that can rotate freely inside a vertical conical metal tube with a gradually expanding cross-sectional area from bottom to top. Liquid enters from the bottom of the metal tube and flows out from the top. When the fluid flows through a vertical conical tube from bottom to top, the rotor is subjected to two forces: one is the vertical upward pushing force, which is equal to the pressure difference generated by the fluid flowing through the annular section between the rotating and conical tube; The other is the net vertical downward gravity, which is equal to the gravity acting on the rotor minus the buoyancy of the fluid on the rotor. When the flow rate increases and the pressure difference is large, the rotor will rise due to the net gravity of the dry rotor. When the pressure difference is equal to the net gravity of the rotor, the rotor is in equilibrium, that is, it stays at a certain position. Engrave a reading on the outer surface of the metal tube, and read the flow rate of the measured fluid based on the position of the rotor. The transmission sub flowmeter is a variable cross-section constant pressure differential flowmeter. The pressure difference acting on the upstream and downstream of the float is constant, while the annular cross-sectional area between the float and the cone tube varies with the flow rate. The position of the float in the conical tube reflects the magnitude of the flow rate.

Characteristics and advantages of FF metal tube float flowmeter

Metal structure, suitable for harsh working conditions such as high temperature and high pressure

Suitable for flow measurement of small caliber and low velocity media

● Simple structure, reliable operation, low maintenance, long service life

● Low requirements for straight pipe sections

A wider traffic ratio of 10:1

● Single axis sensitive indication, non-contact magnetic coupling transmission

Indicator... Function and Advantages

Measure the angular displacement and linear displacement of the magnetic field

● Single axis sensitive display

● Dual row LCD display, capable of displaying both instantaneous flow and cumulative flow simultaneously

● With parameter setting menu function

Equipped with data recovery, data backup, and power down protection functions

● Alarm and cumulative pulse output function

There are both on-site display and intelligent remote transmission types, supporting multiple output protocols,

Adopting a 16 bit embedded microprocessor, it has fast computing speed and high accuracy

High definition backlit LCD display, Chinese English menu operation

● Optional battery powered local display function

Characteristics and limitations of metal tube float flowmeter

Pipelines above DN200 cannot be measured

The strong magnetic field affects the measurement accuracy

application

Mainly used in industries such as petrochemicals, steel, electricity, metallurgy, textiles, food, pharmaceuticals, papermaking, as well as municipal environmental protection and water conservancy.

Technical Parameter

Measurement range:	Water (20 ℃): 1-200000l/h
	Air (20 ℃, 0.1013Mpa) 0.03~4000m3h
Range ratio:	Standard type 10:1, special type 20:1
accuracy:	Standard Type 1.5 Special Type 1.0
Pressure level:	Standard type: DN15-DN50 40bar
Pressure loss:	The pressure rating of the jacket is 16 bar. For special requirements, please contact the pre-sales technical personnel
	Special type: DN15-DN50 250bar
	7KPa-70KPa
Medium temperature:	Standard type: -40 ℃~100 ℃, PTFE: 0 ℃~120 ℃
	High temperature type: 0 ℃ -200 ℃
Medium viscosity:	DN15：η＜5mPa.s(F15.1-F15.3) η30＜mPa.s(F15.4-F15.8)
	DN25：η＜30mPa.s DN50-DN150：＜η＜30mPa.s
Environmental temperature:	Remote transmission type: 40 ℃~185 ℃ (LCD panel performs best between -30 ℃~80 ℃)
	Local pointer type: -40 ℃~100 ℃
Connection form:	Standard type: Standard flange
	Special type: Any standard flange or thread specified by the user

Cable interface:		Explosion proof type with 1/2NPT internal thread, other M20 * 1.5 internal threads
		Standard type: 12~32VDC two-wire system 4-20mA
		Alarm type: 18-28VDC three wire system 4-20mA
		Communication type: 85~265VAC 50Hz
Power supply:		Battery type: 3.6V, 7.5AH lithium battery, three years
Power consumption:		≤3W
Load characteristics:		Two line system: RLmax=50 * (-12) Ω=600 Ω @ 24V
		Alarm type: Maximum load resistance of 200 Ω
		AC type: maximum load resistance of 200 Ω
Alarm output:		Upper or lower limit instantaneous flow alarm
		Output of switch alarm relay
lcd:		Instantaneous flow display value range: 0-50000 (with decimal point)
		Accumulated flow display value range: 0- (with decimal point) Automatic reset

Protection level:		IP65

Conventional voltage resistance	caliber	pressure resistance
	DN15～50	40bar
	DN80～200	16bar

Working principle diagram

The built-in magnetic steel of the metal tube float flowmeter changes the magnetic field with the movement of the float when the float medium moves up and down.

a. On site display type:

Coupling between the follower magnet in the local indicator and the magnet inside the float; And it rotates while the electric pointer. Indicate the current flow rate through the dial. (As shown in the left figure below)

b. Intelligent remote transmission type

The servo magnet in the intelligent indicator is coupled with the magnet inside the float to rotate, while driving the sensing magnet and pointer. The magnetic field changes are converted into electrical signals through a magnetic sensor, which are processed by A/D conversion, digital filtering, temperature compensation, microprocessor processing, D/A output, and LCD liquid crystal display to display the instantaneous flow rate and cumulative flow rate. (As shown in the figure on the right above)

Display&Remote Transmission Component Description

K1 mechanical type indicator

The indicator is directly driven by the float in the measuring tube to rotate the following magnetic steel, thereby driving the pointer shaft. The instantaneous flow value is directly displayed through the dial, so its results are simple, without any correction, and highly reliable

K2 intelligent indicator

● Square cast aluminum shell

● Single mechanical pointer indicator for instantaneous flow rate

5-digit LCD digital display instantaneous flow meter and 8-bit digital display cumulative flow rate

● Output 4-20mA current signal body

The setting method for the action point parameters of the upper and lower limit alarm switches is flexible. Output Relay

● Pulse output

The minimum interval is 50 milliseconds per pulse, and each pulse represents a unit instantaneous flow rate. When the alarm limit is set to zero, the alarm output function is converted to pulse output mode. Therefore, only one of the single alarm output mode and pulse output mode can be selected

● Data backup and power down protection function body

3.6V lithium battery power supply optional (no output, LCD display available)

K3 intelligent indicator

● It has all the functions of K1.K2 indicator and can provide explosion-proof function options

Type A bottom entry and top exit infrastructure

External dimensions

Appearance of M1.M2 indicator unit

caliber	Height (mm)	L(mm)	Pressure loss (KPa)	Weight (kg)
DN15	250	220	14	3.7
DN25	250	230	19	5.2
DN50	250	255	23	8.7
DN80	250	270	33	14.2
DN100	250	280	42	15.2
DN150	250	320	60	33.7
DN200	350	350	70	48.7

Appearance of M4 indicator unit

caliber	Height (mm)	L	Pressure loss (KPa)	Weight (kg)
DN15	250	241	14	3.7
DN25	250	280	19	5.2
DN50	250	300	23	8.7
DN80	250	330	33	14.2
DN100	250	350	42	15.2
DN150	250	405	60	33.7
DN200	350	460	70	48.7

Type A PTFE structure with bottom inlet and top outlet

External dimensions

caliber	Height (mm)	L(mm)	L1(mm)	Weight (kg)
DN15	250	220	135	6
DN25	250	230	135	6
DN50	250	235	195	11
DN80	250	270	225	16.5
DN100	250	280	250	17.5

B-type bottom in and top out PTFE structure

External dimensions

caliber	H height (mm)	L(mm)	A（mm）	Pressure loss (KPa)	Weight (kg)
DN15	560	260	120	18	7
DN25	560	260	120	22	8
DN50	600	260	120	28	15
DN80	700	260	150	36	25
DN100	700	260	150	45	29
DN150	760	300	150	58	50
DN200	800	300	200	70	61

C-type lower flat in and upper flat out ordinary structure

External dimensions

caliber	H height (mm)	L(mm)	A（mm）	Pressure loss (KPa)	Weight (kg)
DN15	500	250	120	20	5
DN25	500	250	120	28	8
DN50	650	250	120	33	14
DN80	800	300	150	45	31
DN100	800	300	150	53	50
DN150	850	350	180	63	67
DN200	880	400	200	70	81

D-type right in left out ordinary structure

External dimensions

caliber	H height (mm)	Pressure loss (KPa)	Weight (kg)
DN15	430	30	6.5
DN25	450	35	10.5
DN50	540	40	21
DN80	557	45	32
DN100	570	50	48

E-type right in left out ordinary structure

External dimensions

caliber	H height (mm)	L(mm)	L1（mm）	Weight (kg)
DN15	250	220	211	3.7
DN25	250	230	280	5.2
DN50	250	255	300	8.7
DN80	250	270	330	14.2
DN100	250	280	350	15.2
DN150	250	320	405	33.7
DN200	350	350	460	48.7

High temperature and high pressure instrument structure

High temperature structural diagram selection code:/1

The difference between high-temperature structure and standard structure is that the distance between the measuring tube and the indicator is increased, which can increase heat dissipation and the thickness of the insulation material

High temperature structure is only applicable to K1 pointer display indicator, measurement range: -80 ℃ -+300 ℃

symbol		DN15		DN25		DN50		DN80		DN100		DN150		DN200
L		270		280		305		320		330		370		400

High voltage structure selection code:/2

specifications	A	A1	H	Weight (kg)
DN15	240	265	250	8
DN25	250	285	250	12
DN50	270	330	350	36
DN80	300	375	350	53
DN100	320	405	350	71

Structural selection code for damper device:/3

Suitable for liquid media with unstable flow and pressure

Suitable for gas media

Selection code for jacket type structure:/4

Suitable for working conditions where the temperature of the measured medium needs to be heated or cooled, with a jacket thickness of 16mm, recommended interface DN15 flange type, pressure resistance of 1.6Mpa

Common gas density table

Pressure: 0.1013MP Temperature: 20 ℃ Unit: kg/m3

name	density	name	density	name	density	name	density
air	1.2041	propane	1.8332	benzene	3.2476	fluorine	1.5798
nitrogen	1.1646	Butane	2.4163	carbon monoxide	1.165	chlorine	2.9476
oxygen	1.3302	Isobutane	2.4163	carbon dioxide	1.829	Methyl Chloride	2.099
helium	0.1664	N-pentane	2.9994	nitric oxide	1.2474	Ethyl Chloride	2.6821
hydrogen	0.1664	ethylene	1.166	nitrogen dioxide	1.9121	ammonia	0.708
krypton	3.4835	propylene	1.7495	Nitrous oxide	1.8302	Freon-11	5.711
xenon	5.4582	butene-1	2.3326	hydrogen sulfide	1.4169	Freon-12	5.0269
neon	0.8391	Male-2	2.3327	hydrogen fluoride	1.1235	Freon-13	4.3428
argon	1.6605	Butene-2	2.3327	COS	2.4973	Freon-113	7.79
methane	0.6669	isobutylene	2.3327	ozone	1.9952
ethane	1.25	acetylene	1.083	sulfur dioxide	2.726

Common liquid density table

name	density	name	density	name	density	name	density
water	998.3	ethanol	789.2	Intermediate methanol	1034	fluoroform	1490
mercury	13545	glycol	1113	p-cresol	1011	carbon tetrachloride	1594
bromine	3120	n-PrOH	804.4	Methyl formate	975	O-Xylene	880
sulfuric acid	1834	Ethylpropanol	785.1	Methyl propionate	915	xylene	864
nitric acid	1512	n-butanol	809.6	formic acid	1220	P-Xylene	861
Hydrochloric acid (30%)	1193	acetonitrile	783	acetic acid	1049	toluene	866
Huan Ding	1261	Pentanol	813	propionic acid	993	o-chlorotoluene	1081
Bingsi	791	acetaldehyde	783	aniline	1021	m-chlorotoluene	1072
A and B heirs	803	Propionaldehyde	808	propionitrile	781.8	cyclohexane	778
phenol	1050	Cyclohexanone	946.6	Nitrile	790	ethane	660
carbon dioxide	1262	diethyl ether	714	thiophene	1065	heptane	684
ethanolamine		glycerol	1261.3	dichloromethane	1326	octane	702
methanol	791.3	o-cresol	1020	METHYL ACETATE	934

Flow rate comparison table

Nominal Diameter	Flow velocity (m/s)
	0.01	0.1	0.3	0.5	1	2	3	4	5	10
Flow rate (m3/h)
10	0.00283	0.02827	0.08482	0.14137	0.28274	0.56549	0.84823	1.13097	1.41372	2.82743
15	0.00636	0.06362	0.19085	0.31807	0.63617	1.27235	1.90852	2.54469	3.18086	6.36173
20	0.01131	0.11309	0.33929	0.56549	1.13097	2.26195	3.39292	4.52389	5.65487	11.3097
25	0.01767	0.17672	0.53014	0.88357	1.76715	3.50429	5.30144	7.06858	8.83573	17.6715
32	0.2895	0.28953	0.86859	1.44765	2.89529	5.79058	8.68588	11.5812	14.4765	28.9529
40	0.04524	0.45239	1.35717	2.26195	4.52389	9.04779	13.5717	18.0956	22.6195	45.2389
50	0.07069	0.70689	2.12058	3.53429	7.06858	14.1372	21.2058	28.2743	35.3429	70.6858
65	0.11945	1.19459	3.58377	5.97295	11.9459	23.8918	35.8377	47.7356	59.7295	119.459
80	0.18096	1.80956	5.42867	9.04779	18.0956	36.0911	54.2867	72.3823	90.4779	190.956
100	0.28274	2.82743	8.4832	14.1372	28.2743	56.5487	84.823	113.372	147.372	282.743
125	0.44178	4.41786	13.2536	22.0893	44.1786	88.3573	132.536	176.715	220.893	441.786
150	0.63617	6.36173	19.0852	31.8086	63.6173	127.2345	190.852	254.469	318.086	636.173
200	1.13097	11.3097	33.9292	56.5487	113.097	226.195	339.292	452.389	565.487	1130.973
250	1.76715	17.6715	53.0144	88.3573	176.715	353.429	530.144	706.585	883.573	1767.15
300	2.54469	25.4469	76.3407	127.235	254.469	508.938	763.407	1017.88	1272.35	2544.69

flow meter

Water: 20 ° C Air: 20 ° C, 0.1013Mpa

liquid					air
caliber	Range number	Range (L/h)	Range (m ³/h)	Pressure loss Kpa	Nm3/h (under standard conditions)	Pressure loss Kpa
DN15	1	1~10	0.001~0.01	6	0.03~0.3	6.5
	2	1.6~16	0.006~0.016	6.4	0.05~0.5	7
	3	2.5~25	0.0025~0.025	6.5	0.07~0.7	7.1
	4	4.0~40	0.004~0.04	6.5	0.11~1.1	7.2
	5	6.3~63	0.0063~0.063	6.6	0.18~1.8	7.3
	6	10~100	0.01~0.1	6.6	0.28~2.8	7.5
	7	16~160	0.016~0.16	6.8	0.4~4	8
	8	25~250	0.025~0.25	7.2	0.7~7	10.8
	9	40~400	0.04~0.4	8.6	1.0~10	11
	10	63~630	0.063~0.63	11.1	1.6~16	14
	11	63~630	0.063~0.63	14	\\	14
DN25	1	100~1000	0.1~1	7	\\	7..7
	2	160~1600	0.16~1.6	10.8	3.0~30	8.8
	3	200~2000	0.2~2	13.5	4.5~45	12
	4	250~2500	0.25~2.5	15.8	\\	15
	5	320~3200	0.32~3.2	16.2	7.0~70	19
DN50	1	400~4000	0.4~4.0	\\	\\	\\
	2	500~5000	0.5~5	\\	12~120	\\
	3	630~6300	0.63~6.3	\\	\\	\\
	4	500~5000	0.5~5.0	\\	18~180	\\
	5	630~6300	0.63~6.3	\\	\\	\\
	6	1000~10000	1.0~10	\\	18~180	\\
	7	1600~16000	1.6~16	\\	25~250	\\
	8	2000~20000	2~20	\\	40~400	\\
	9	2500~25000	2.5~25	\\	\\	\\
	10	1600~16000	1.6~16	\\	63~630	\\
	11	2000~20000	2~20	\\	\\	\\
DN80	1	2500~25000	2.5~25	\\	\\	\\
	2	4000~40000	4~40	\\	70~700	\\
	3	6300~63000	6.3~63	\\	120~1200	\\
	4	4000~40000	4~40	\\	180~1800	\\
DN100	1	6300~63000	6.3~63	\\	\\	\\
	2	8000~80000	8~80	\\	180~1800	\\
	3	1000~10000	1~10	\\	300~3000	\\
	4	8000~80000	8~80	\\	\\	\\
DN150	1	10000~10000	10~100	\\	300~3000	\\
	2	15000~150000	15~150	\\	\\	\\
	3	15000~150000	15~150	\\	\\	\\
DN200	1	20000~200000	20~200	\\	\\	\\

Special calibers are DN20, DN32, DN40, DN65, DN125. Please contact the manufacturer in advance for consultation.

Model Selection Table

FF-

Metal tube float flowmeter

structural style

Basic type, bottom in and top out

Down in, up out horizontally,

Bottom horizontal in and top horizontal out

Right in, left out

Left in and right out

Path code

DN15 DN25 DN50 DN80 DN100 DN200 Example: DN15 caliber option code "15"

Measurement tube material

Main material: Carbon steel

Main material: Stainless steel 1.4301 (304)

Main material: Stainless steel 1.4435 (316L)

Main material: stainless steel 1.4435 (316L)+lining material PTFE (polytetrafluoroethylene)

Main material: Titanium alloy

power supply

DC 24V

AC 220V

3.6V DC lithium battery power supply

Display header style

Local pointer indication type

LCD display+pointer display type (4~20mA+relay)

Intelligent

Output signal and communication

no-output

4~20mA

Auxiliary signal: relay function output

pulse output

medium temperature

-40 ℃~100 ℃ (standard pointer display type optional)

-30 ℃~80 ℃ (LCD display type optional)

0 ℃~120 ℃ (applicable temperature for PTFE lining type)

0 ℃~150 ℃ (High temperature resistant pointer display type optional)

The above selection table does not include selection codes. If you need selection codes, please contact us or fill in your information

Process connection withstand voltage level	/D6	EN 1092-1(DIN) PN6
	/D10	EN 1092-1(DIN) PN10
	/D16	EN 1092-1(DIN) PN16
	/D25	EN 1092-1(DIN) PN25
	/D40	EN 1092-1(DIN) PN40
	/D63	EN 1092-1(DIN) PN63
	/D100	EN 1092-1(DIN) PN100
	/D250	EN 1092-1(DIN) PN250
	/P	Special standards for product application areasHG20594

Alternative: Additional institutions	/1	High temperature customized type
	/2	High voltage customized type
	/3	Customized gas medium damping type
	/4	Insulation jacket type
	/5	Customized threaded connection type