1、 Product Overview:
OW-LC elliptical gear flowmeter, also known as volumetric flowmeter, is a type of flowmeter with high accuracy. Using mechanical measuring elements to continuously divide the fluid into several known volume parts, the total flow volume is measured based on the number of times the measuring chamber sequentially and repeatedly fills and discharges this volume part of the fluid. The OW-LC elliptical gear flowmeter can be made of different materials (cast steel, stainless steel, and 316) and is suitable for flow measurement in industrial sectors such as chemical, petroleum, pharmaceutical, power, metallurgy, and food.
2、 Technical parameters:
Allowable errors: ± 0.1%, ± 0.2%, ± 0.5%
Nominal diameter DN (mm): 4-300
Nominal pressure PN (M.Pa): cast iron (A), stainless steel (P) 1.0, 1.6, 2.5, 4.0, 6.3, cast steel (E) 2.5, 4.0, 6.3, 9.6
Temperature of the tested liquid: Low temperature type: -40~+60 ℃, normal temperature type: -10 ℃~+80 ℃, medium temperature type: -10 ℃~+200 ℃, high temperature type: -10 ℃~+300 ℃
Measured liquid viscosity (mPa. s): 0.3-50000
Pipeline connection: GB/T9118-2000 (Chinese standard flange); NIST (American Standard Flange), BSPT (British Standard Pipe Thread): NPT (American Push Pull Pipe Thread);
On site display: 99999999 L (cumulative flow), 9999999.9 L (single flow), 9999999.9 L (instantaneous flow)
Output signal: pulse signal, 4-20mA, 1-5V, 4-20mA+HART protocol MODBUS， Supports RS232 and RS485 communication (optional)
Explosion proof grade: EXiaIIBT5EXiaIICT5
Protection level: IP65
3、 Characteristics of OW-LC elliptical gear flowmeter:
1. Flow measurement is independent of the flow state of the fluid and has a wide measurement range.
2. The higher the viscosity of the medium, the smaller the amount of leakage from the gear and measuring space gap. Therefore, the larger the viscosity of the measured medium, the smaller the leakage error, and the more advantageous it is for measurement.
3. The elliptical gear flowmeter has high measurement accuracy and is suitable for measuring the flow rate of high viscosity media.
4. There is no need for straight pipe sections before and after the flowmeter, even if the flowmeter is close to valves, bends, reducers, or expanders, there is no need to install straight pipe sections.
5. High measurement accuracy: 0.2 and 0.5 levels.
6. It can measure various oils and non corrosive liquid media for cast iron.
4、 OW-LC elliptical gear flowmeter parameter flow range table:

model		OW-LC-a cast iron		OW-LC-e cast steel		OW-LC-b stainless steel
nominal pressureMpa		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 tested liquid		-20℃～+100℃
Flow rangem3/h
Model accuracy level	OW-LC-a cast iron			OW-LC-e cast steel		OW-LC-b stainless steel
Nominal caliber（mm）	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