Flow

Overview

Gear flowmeter is a type of positive displacement flowmeter with high accuracy. It uses the pressure difference between the inlet and outlet of the flowmeter cavity to drive a pair of gears to mesh. Two precisely matched gears are enclosed in a precision-machined cavity, and the root of each gear and the measuring cavity form a volume cavity of equal volume. The liquid is divided into a single known standard volume portion by the rotation of the gear. The total volume of the liquid is measured according to the number of times the volume cavity is filled and discharged with the liquid of the volume portion one by one and repeatedly.

Features

• High measurement accuracy and high repeatability (±0.5% reading, 0.1% repeatability)
• High and low temperature (-196℃-200℃) (Customized higher & lower temperature please inform)
• Wide range ratio 1:150
• High resolution (10-16P/rpm)
• Various signal output types (pulse, analog, 485 and Hart)
• Available for highly corrosive liquids (sulfuric acid, hydrofluoric acid, etc.)
• Available for high viscosity media (syrup, asphalt and honey, etc.

Specifications

1. Measuring medium： Liquid
2. Medium viscosity： 5…500mm2/s
3. Ambient temperature： -40…85 degrees
4. Medium temperature： -40…80 degrees, higher temperature type 200 degrees (customized)
5. Pressure： Aluminum 50bar，stainless steel 100bar， higher pressure can be customized 400bar
6. Accuracy： +/-0.5% reading (1:20 range), +/-1% reading (full range), (the above data is based on 20cst viscosity liquid)
7. Repeatability： +/-0.1% reading
8. Working voltage： 9-26VDC
9. Explosion-proof： ExdIIct6Gb
10. Protection： IP65
11. Output： Analog (4-20mA, 1-5V and 2-10V), pulse frequency 5Khz (Max)
12. Communication： RS485 supports standard Modbus-RTU protocol, Hart,GPRS,Bluetooth
13. Electrical interface: M20*1.5 (with metal explosion-proof connector)
14. Material:
    Body 1.4305 (304SS), 1.4144 (316L) and AL
    Gear 304SS, 316L and high-hardness alloy steel
    Bearing Rolling bearing or sliding bearing
    Seal FKM, NBR and PTFE
15. Flange: National standard (GB/T9112 standard and HG/T20592-2010) American standard and Japanese standard optional
16. Accessories: Internal and external thread conversion connector, Ermeto connector, Sanitary chuck connector