Oval Gear Flow Meter
The stainless steel oval gear flowmeter is a corrosion-resistant flowmeter developed by our company to meet market demands. This product features a novel design and reasonable structure. It is lightweight and highly accurate, and can be widely used for flow measurement in petroleum, chemical, pharmaceutical, and other industries.
Detailed description
Type A-F Oval Gear Flow Meter
[Parameters of Oval Gear Flow Meter]
The HQ-LC-B oval gear flow meter is a corrosion-resistant flow meter developed by our company to meet market needs. This product features a novel design and reasonable structure. It is lightweight and highly accurate, and can be widely used in flow measurement in petroleum, chemical, pharmaceutical, and other industries.
HQ-LC-B Stainless Steel Oval Gear Flow Meter Product Features
n High measurement accuracy, wide flow range, and good repeatability
n Smooth rotation of the screw rotor, low vibration, and long service life
n Insensitive to changes in the viscosity of the measured liquid, especially suitable for measuring high-viscosity liquids
n Simple structure, small size, and light weight
n Easy installation; no straight pipe section is required before the meter
HQ-LC-B Oval Gear Flow Meter Technical Parameters
Main component materials and operating pressure (Operating pressure 1.0MPa, 1.6MPa)
Accuracy class: Class 0.5, Class 0.2 (General medium temperature -10℃ ~ +60℃)
Remote display and field explosion-proof rating: Exia II CT5
Operating medium temperature: -20℃ ~ 100℃, up to 200℃ with high-temperature adjustment and heat dissipation cylinder. In this case, the maximum flow rate is 90% of the original flow meter's maximum flow rate, and the minimum flow rate is 120% of the original flow meter's minimum flow rate.
Ordinary cast iron type (A), cast steel type (E), stainless steel type (B)
|
Item
Model
|
HQLC-A cast iron
|
HQLC-E Cast steel
|
HQLC-B Stainless Steel
|
|
Nominal pressure
Mpa
|
1.0 1.6
|
2.5 4.0 6.4
|
1.0 1.6
|
|
Viscosity of the tested liquid
|
2 — 200 mPa.s
|
|
Temperature of the liquid being tested
|
-20℃～+100℃
|
|
Flow Range m³h
|
|
Model
Elliptical gear flow meter
Accuracy
|
HQLC-A Cast Iron
|
HQLC-E Cast Steel
|
HQLC-B Stainless Steel
|
|
Norminal Diameter(DNmm
|
0.5
|
0.2
|
0.5
|
0.2
|
0.5
|
0.2
|
|
10
|
0.04～0.4
|
0.1～0.4
|
0.04～0.4
|
0.1～0.4
|
0.1～0.5
|
0.1～0.5
|
|
15
|
0.25～1.5
|
0.3～1.5
|
0.25～1.5
|
0.3～1.5
|
0.3～1.5
|
0.3～1.5
|
|
20
|
0.5～3
|
0.6～3
|
0.5～3
|
0.6～3
|
0.6～3
|
0.6～3
|
|
25
|
1～6
|
1.2～6
|
1～6
|
1.2～6
|
1.2～6
|
1.2～6
|
|
40
|
2.5～15
|
3～15
|
2.5～15
|
3～15
|
3～15
|
3～15
|
|
50
|
4～24
|
4.8～24
|
4～24
|
4.8～24
|
4.8～24
|
4.8～24
|
|
65
|
5～40
|
8～40
|
5～40
|
8～40
|
8～40
|
8～40
|
|
80
|
10～60
|
12～60
|
10～60
|
12～60
|
12～60
|
12～60
|
|
100
|
16～100
|
20～100
|
16～100
|
20～100
|
20～100
|
20～100
|
|
150
|
32～190
|
38～190
|
32～190
|
38～190
|
38～190
|
38～190
|
|
200
|
34～340
|
68～340
|
34～340
|
68～340
|
68～340
|
68～340
|
Elliptical Gear Flow Meter Selection Chart
| HQLC |
Oval Gear Flow Meter |
| DN |
□ |
DN |
| Connectction |
-P |
Direct pipe welding type |
| -S |
Direct pipe welding type |
| -W |
Butt-welded flange type |
| -L |
Threaded |
| -K |
Clamp on |
| Pressure Level |
A |
1.0 MPA |
| B |
1.6 MPA |
| C |
2.5 MPA |
| D |
4.0 MPA |
| E |
Customized |
| Output Signal |
0 |
No output |
| 1 |
4-20MA |
| 2 |
RS485 |
| 3 |
Pulse output |
| 4 |
HART Protocol |
| Valve body material |
C |
Cast Iron |
| G |
Cast Steel |
| B1 |
Carbon Steel(DN10-50) |
| B2 |
Carbon Steel(DN65-200) |
| E1 |
Stainless Steel 304(DN10-50) |
| E2 |
Stainless Steel 304(DN65-200) |
| Measuring Accuracy |
A |
±0.2% |
| B |
±0.5% |
| C |
±1.0% |
| D |
±1.5% |
| E |
±2.5% |
| Power Supply |
DC |
24V |
| AC |
220V |
| D |
Battery |
| T |
Photo photovoltaic power supply |
Installation diagram
On-site installation diagram of an oval gear flow meter
G-I type gear flow transmitter
The HQ-GF gear flow transmitter is a type of positive displacement flow transmitter. It is a high-precision transmitter for measuring volumetric flow rate. As the medium flows, the gears mesh and rotate. Under the action of fluid flow, a pressure difference is formed between the inlet and outlet ends of the instrument. No power supply is required; a pair of gears rotate freely, and the cavities between the gears are filled with liquid. The liquid is discharged as the gears rotate, and the flow rate of the liquid passing through the instrument can be determined by measuring the number of gear rotations. The cylindrical gear transmitter can measure very small flow rates and quantify small volumes of liquid.
The rotational speed of the cylindrical gear transmitter is detected by a sensing coil in a signal amplifier mounted on the instrument casing. The signal amplifier does not come into contact with the measured medium. When the transmitter gears cut the magnetic field lines generated by the magnet inside the casing, it causes a change in the magnetic flux in the sensing coil. The sensing coil sends the detected periodic change in magnetic flux signal to the preamplifier. The signal is amplified and shaped, generating a pulse signal proportional to the flow rate. This signal is sent to the unit conversion and flow integration circuit to obtain and display the accumulated flow value. At the same time, the pulse signal is also sent to the frequency-to-current conversion circuit, which converts the pulse signal into an analog current, thereby indicating the instantaneous flow rate.
The cylindrical gear transmitter has high processing precision and precise installation. The rotation of the gears is scanned non-contact, and each tooth generates a pulse, resulting in very high resolution. The cylindrical gear transmitter can measure very small flow rates and quantify small volumes of liquid.
Applications:
● Resin and grease measurement
● Fuel oil measurement
● Food filling measurement
● Fluid control systems
Features:
1. High pressure resistance (1.0-45MPa), high and low temperature resistance (-196℃~+200℃)
2. Can measure various viscous media
3. High accuracy and high repeatability, wide range ratio (1:100)
4. Pulse output/analog output optional
5. Large measuring range, corrosion resistance, and strong resistance to contamination (acids and alkalis)
Performance parameters
Unit: mm
| Model/Size |
A |
B |
C |
D |
E |
F |
G |
H |
| HQ-GF02 |
Φ83 |
80 |
55 |
70 |
G1/4 |
40 |
M6 |
16 |
| HQ-GF04 |
Φ83 |
80 |
55 |
70 |
G3/8 |
55 |
M6 |
16 |
| HQ-GF06 |
Φ83 |
80 |
62 |
70 |
G1/2 |
55 |
M6 |
14 |
| HQ-GF10 |
Φ83 |
80 |
65 |
70 |
G1/2 |
55 |
M6 |
14 |
| HQ-GF15 |
Φ113 |
110 |
65 |
70 |
G3/4 |
90 |
M6 |
28 |
| HQ-GF25 |
Φ158 |
140 |
85 |
70 |
G1 |
110 |
M8 |
40 |
| HQ-GF32 |
Φ218 |
160 |
100 |
70 |
G1-1/4 |
180 |
M8 |
45 |
The above dimensions are for standard products; in special cases, customization is available based on the customer's on-site requirements.
Basic Parameter Table
Flow rate unit: L/H
| Model |
Flow Range I/H |
K coefficient P/L |
Max Pressure Bar |
Temperature |
Accuracy |
Port |
| Alloy |
Stainless steel |
| HQ-GF02 |
0.6-50 |
11200 |
150 |
400 |
-15-80℃ |
+/-0.5%(Range 1:10)
+/-1.0%(Range 1:100)
|
G1/4 |
| HQ-GF04 |
5-250 |
4780 |
150 |
400 |
-15-80℃ |
G3/8 |
| HQ-GF06 |
10-500 |
3468 |
150 |
400 |
-15-80℃ |
G1/2 |
| HQ-GF10 |
50-1200 |
2780 |
150 |
400 |
-15-80℃ |
G1/2 |
| HQ-GF15 |
200-3000 |
334 |
150 |
400 |
-15-80℃ |
G3/4 |
| HQ-GF25 |
1000-12000 |
59.9 |
150 |
400 |
-15-80℃ |
G1 |
| HQ-GF32 |
2000-20000 |
39.9 |
150 |
400 |
-15-80℃ |
G1-1/4 |
Gear flow transmitter selection table
| HQ-GF |
|
|
|
|
|
|
Statement |
| DN |
04~300 |
|
|
|
|
|
DN4~DN300 |
| Seal |
F |
|
|
|
|
FKM |
|
P |
|
|
|
|
PP |
| Connection |
1 |
|
|
|
Thread |
|
2 |
|
|
|
Flange |
|
3 |
|
|
|
Sanitary flange connection |
|
4 |
|
|
|
Card slot connection |
| Signal Output |
P |
|
|
Pulse Output |
|
I |
|
|
4-20mA |
|
RS |
|
|
RS485 |
|
H |
|
|
HART |
Material |
1 |
|
304 |
|
2 |
|
316L |
|
3 |
|
Tetrafluoro |
|
4 |
|
Aluminum alloy |
| Special Requirements |
T |
High temperature |
|
P |
High Voltage |
Standard nominal diameters: DN2, 4, 6, 10, 15, 25, 32, 40
Actual installation diagram of a gear flow transmitter in the field
Certificate Approved
