FG gear flowmeter-Fornitore globale

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

principle

A sealed lunar cavity (not absolutely sealed due to the rotation of the gears) is formed by a measuring box and a pair of elliptical gears installed inside the measuring box, along with upper and lower cover plates, as the unit for calculating the primary displacement. When the measured liquid enters the flowmeter through the pipeline, the pressure difference generated at the inlet and outlet drives a pair of gears to rotate continuously, continuously delivering the liquid measured by the initial lunar cavity to the outlet. The product of the number of revolutions of the elliptical gear and four times the displacement per time is the total flow rate of the measured liquid.

structure

The elliptical gear flowmeter consists of a flow transmitter and a counting mechanism. Installing a radiator between the transmitter and the counting mechanism constitutes a high-temperature flowmeter. The transmitter consists of a measuring chamber equipped with a pair of elliptical gear rotors and a sealed coupling, while the counting mechanism includes a reduction mechanism, an adjustment mechanism, a counter, and a transmitter.

application

Suitable for asphalt Lubricating oil. vegetable oil. Diesel fuel Oil Residual oil Kerosene engine oil. Gasoline Heavy oil Fuel oil Thermal oil Crude oil Light oil Insulating oil Hydraulic oil. Waiting for various oil products.

Technical Parameter

Nominal diameter (mm)	DN10～DN200
Measured liquid viscosity:	2～3000（mPa.s）
Protection level:	IP65 (specially customized IP68)
Repetitive error:	± 0.2% and ± 0.5% of the measured value
Accuracy level:	Level 0.2, Level 0.5
Temperature of the tested medium:	Room temperature type:- 20～60℃
	High temperature type:+ 60℃～200℃
	Ultra high temperature type: 220 ℃
Rated working pressure: (High voltage can be customized)	Cast iron: ≤ 1.6MPa
	Stainless steel: ≤ 1.6MPa or 2.5MPa
	Cast steel: ≤ 2.5MPa (4MPa, 6.5MPa optional)
Output signal:	Pulse signal or 4-20mA current signal
Current output:	load resistance	0～10mA：0～1.5kΩ
		4～20mA：0～750 Kω
Digital frequency output:	The upper limit of output frequency can be set within 1-5000Hz with photoelectric isolation
	The collector of the transistor is open circuited for bidirectional output. External power supply
	When conducting at ≤ 35V, the maximum collector current is 250mA
Power supply:	DC24V or 3.6V battery
Total power consumption:	Less than 20W
Environmental temperature:	Minus 40 to+60 ℃
Relative humidity:	5%～95%

Caliber and Flow Parameters Table (Table 1)

Pipe diameter (DN)

Selection code

Flow range (m3/h)

Conventional viscosity range (mPa. s)

Higher viscosity range (mPa. s)

0.3~0.6

0.6~2

2~200

200~1000

1000~2000

Accuracy 0.5

Accuracy 0.2

Accuracy 0.5

Accuracy 0.2

Accuracy 0.5

Accuracy 0.2

Accuracy 0.5

Accuracy 0.2

0.2~0.5

0.15~0.5

0.1~0.5

0.05~0.5

0.06~0.3

0.03~0.3

0.03~0.2

10(min.)

0.08~0.2

0.1~0.25

0.05~0.25

0.08~0.25

0.05~0.25

0.03~0.05

0.02~0.05

0.75~1.5

0.5~1.5

0.3~1.5

0.15~1.5

0.2~1.0

0.1~1.0

0.07~0.7

1.5~3

1~3

0.5~3

0.3~3

0.4~2.1

0.2~2.1

0.15~1.5

3~6

2~6

1~6

0.6~6

0.8~4.2

0.4~4.2

0.3~3

7.5~15

5~15

2.5~15

1.5~15

2.1~10.5

1.0~10.5

0.7~7.5

8~24

4.8~24

2.4~24

2.4~16.8

1.6~16.8

1.2~12

40（50）

40B（50B）

6~20

4~20

2~20

2.8~14

1.4~14

1.0~10

20~40

15~40

8~40

4~40

5.6~28

2.8~28

2~20

30~60

20~60

12~60

6~60

8.4~42

4.2~42

3~30

100

50~100

34~100

20~100

10~100

14~70

6~70

5~50

150

95~190

64~190

38~190

19~190

26.6~133

13.3~133

9.5~95

200

170~340

114~340

56~340

34~340

47.6~238

23.8~238

17~170

pipe diameter

Selection code

Flow range (L/h)

Conventional viscosity range (mPa. s)

Higher viscosity range (mPa. s)

0.8~2.5

2.5~20

20~150

150~350

Accuracy 0.5

Accuracy 0.3

Accuracy 0.5

Accuracy 0.3

Accuracy 0.5

Accuracy 0.3

Accuracy 0.5

Accuracy 0.3

30~120

60~120

20~120

40~120

10~110

20~110

6~60

12~60

Structural materials and pressure resistance, etc

model	Collectively referred to as material	Shell material	gear	Shaft and bearings	Pressure resistance Mpa
FG10-	cast iron	cast iron	Stainless steel 1.4301 (304)&aluminum alloy	Stainless steel bearing	1.6MPa
FG20-	cast steel	cast steel			≤DN50,6.3MPa; ≥DN65,4.0MPa; ≥DN150,2.5MPa
FG30L-	Stainless steel 1.4301 (304)	Stainless steel 1.4301 (304)			≤DN50,2.5MPa; ≥DN65,1.6MPa
FG30K-	Stainless steel 1.4435 (316L)	Stainless steel 1.4435 (316L)	1.4435(316L)		≤DN50,2.5MPa; ≥DN65,1.6MPa

Outline parameter table

1. External dimensions of cast steel type

The nominal Tongjing	L	H	A	B	D	D1	N(one)	Φ	weight（kg）
15	200	138	180	232	105	75	4	14	12
20	250	164	160	220	125	90	4	18	18
25	300	202	185	252	135	100	4	18	22
40	300	202	208	293	165	125	4	23	27
50	384	262	312	394	175	135	4	23	66
80	450	337	332	452	210	170	8	23	118
100	555	442	310	478	250	200	8	25	210
150	540	510	347	557	300	250	8	26	260
200	650	650	476	720	36	310	12	26	430

2. Stainless steel type external dimensions

The nominal Tongjing	L	H	A	B	D	D1	N(one)	Φ	weight（kg）
10	170	100	167	216	90	60	4	14	7
15	200	120	172	228	95	65	4	14	11
20	230	150	225	238	105	75	4	14	17
25	280	195	232	246	115	85	4	14	21
40	260	178	265	349	145	110	4	18	24
50	260	178	265	349	160	125	4	18	24
65	365	260	319	436	180	145	4	18	60
80	420	305	324	459	200	160	8	18	82
100	515	400	373	554	220	180	8	18	127
150	540	515	397	607	280	240	8	23	280
200	650	650	397	646	340	295	12	23	435

PS: The external dimensions of the high-temperature elliptical gear flowmeter made of cast iron and steel are DN15~DN25. The A and B dimensions are based on the data in the above table plus 160mm heat dissipation extension pipe. The A and B dimensions are based on the data in the above table plus 300mm heat dissipation extension pipe. The remaining dimensions are the same as the corresponding dimensions in the above table. When the medium temperature is greater than 100 ° C, this option needs to be considered

A is suitable for DN15~25

B is suitable for DN40~100

Note: Gear products have different factors such as viscosity and pressure resistance, and cannot provide a detailed list of size items. If specific size drawings are required, please provide detailed parameters.

Model Selection Table

FG10-	Cast iron universal gear flowmeter
FG20-	Cast steel universal gear flowmeter
FG30L-	Stainless steel gear flowmeter. 1.4301 (304)
FG30K-	Stainless steel gear flowmeter. 1.4435 (316L)
	Applicable pipe diameter
	10	DN10- DN200 (mm) refer to the selection code table for details
		Connection method
		F	Flange type connection
		T	External thread connection
			Viscosity of the tested liquid
			A	0.3~0.6mpa.s
			B	0.6~2mpa.s
			C	2~200mpa.s
			D	200~1000mpa.s
			E	1000~2000mpa.s
				Temperature of the measured medium
				1	Room temperature type -20~60 ℃
				2	High temperature type 60-220 ℃
					accuracy class
					5	Level 0.5
					3	0.25 level
					2	Level 0.2
						Voltage resistance value
						1.0	See parameter options such as 1.0=1MPa for details
							signal type
							P	pulse signal
							A	4-20mA current signal
							F	no signal
								Alternative: On site display system
								/DA	Mechanical character wheel accumulation display unit (optional)
								/DA2	Mechanical character wheel accumulation display unit+reset function
								/DB	LCD digital display unit (optional)
								/H	Insulation jacket function (this option must be selected for easily curable media)
								/C	Shrinking and expanding function
FG10-	10	F	A	1	5	1.0	P	/DA	← Selection Example

Required option: Power supply mode	DC 24V	/DC24V
	Lithium battery 3.6V	/DC3.6V
	Non powered pointer type	0

Ordering Tips

When placing an order, please specify the flow direction, type, diameter, and expected measurement range of the medium. We can help you complete precise calibration at the factory.

If it is a viscous medium, please indicate the viscosity, temperature, type of medium, and pressure rating inside the pipe.