Oil products, Alcohol, Asphalt, Media with high viscosity
Packaging & Delivery
depend on the quantity
oval gear flow meter for high temperature liquid
Basic errors allowance: +/0.5;
mechanical or LCD display optional.
oval gear flow meter for high temperature liquid
DTO oval gear flowmeter is a kind of direct-reading accumulating liquid flowmeter. DTO oval gear flowmeter adds transmitter mechanism on the basic of DTO flowmeter. It can be equipped flux and instant flux. It possesses many virtues such as large testing range, high precision etc..
It is widely used in flux measurement in industrial field such as oil development, oil refining, chemical, commerce, oil storage.
Measurement is made in the testing room. There is a pair of oval gear in it. The pair of oval gear will keep rotating on the axis under the role of liquid pressure difference between inlet and outlet. Liquid flux through the flowmeter will be known by testing gears’ rotation number As it is showed in picture 1(a), the inlet and outlet are separated by a pair of oval gear A and B. There is crescent-shaped space between Gear A and inner wall of the testing room (It is showed asshadow in the picture).There is a rotating torque while the total torque on Gear B is zero. Gear B will be rotated by driven of Gear A. The picture 1(b) shows the middle position of the two gears. When the gears turn to the position showed in the picture 1(c), Gear A will lose rotating torque while Gear B will gain rotating torque. Gear A will be rotated by driven of Gear B. It is showed in the picture1(d).
The Model DTO oval gear flowmeter mainly consists of testing room, sealing mechanism and counting mechanism.
1. Testing room: outcover(1) of instrument (see picture 2,3;same as pictures later)is made by cast iron. Inner space and the board (4)consists of the testing room. There are 2 stainless steel axes (2) and a pair of oval gear(3) is sleeved on the axes.. The liquid from the inlet will be sent to the outlet through the crescent-shaped space by the gears’turn which is driven by pressure difference between inlet and outlet in flowmeter. Four times volume of crescent-shaped space will be accumulated while the gear makes one revolution round. The space between oval gear and inner wall of the testing room is very small with tens of micro-mete only to decrease leak of theinstrument. 2. Sealing mechanism: The testing room is sealed. The permanent magnetic sealing.Mechanism is adopted on the small caliber flowmeter(See picture 2).The partition (8)separates the active and passive permanent magnet (6) (7). Sensitivity Of the structure is high and seal is solid. Polytetrafluoroethylene plastic is used as packing seal for the big caliber fowmeter (See picture 3). T he sealing lining (6) willl be extended to seal by change of spring (7) compression through adjusting the nut(8). The structure is rather simple and conbenient for adjustment.
3. Counting mechanism: It includes driving wheel speed ratio adjusting mechanism and recokoning mechanism. The total rotation number and speed of a pair of gears will be passed to the needle and wording wheel of recokoning mechanism(11).after speed changed caused by driving wheel. The total liquid volume and instant flux through the pipe will be known. Speed ratio adjusting mechanism is used for adjusting and correcting errors of instrument. Oval gear flowmeter is installed electrical impulses signal transmitter in the counting mechanism of the DTO oval gear flowmeter.I.E. one permanent magnet disk is fixed on the transducer is installed on the counter. The transducer possesses merits such as long life, strong capacity of anti interference, wide working frequency, no spark, fearless of oil, grease and dust, small measurement, convenient installation. The solid testing signals can be got without contact when the magnet accesses to the induction surface with the action distances. Permanent magnet driving block diagram of Model DTO flowmeter Polytetrafluoroethylene seal driving diagram of Model DTO flowmeter.
Main technical data
Basic errors allowance ±0.5 (±0.2) Max.working pressure(Mpa)1.6 Connecting flange of pipe …GB2555-81 Viscosity of liquid (MPa.s). 0.6-250 (up to 2000mPa.s, Pease specify in order) Temperature of tested medium -30-160 Specification of oval gear flowmeter and scope of flux
Factory site and workshop:
1.Loading Port: Shanghai China
2. Samples Leading Time: 3-7 working days
3. Delivery Time: Within 7-15 days after payment
4.Payment: T/T, Western Union, Paypal
We promise to deliver the following after-sales service:
1. Warranty: The warranty period is 12 months starting from the shipping date;
2. Customers will enjoy free repair services for failures found within the warranty due to manufacturing quality;
3. For on-site services not arising from manufacturing quality, we shall charge a certain service fee at our discretion based on actual charges incurred such as travel expense;
4. We provide paid repair services for meter damages not arising from manufacturing quality issues or meter damages not within the scope of warranty.
Cixi flowmeter Co., Ltd. was established in 1986 and we have especially set up Shanghai Cixi Instrument Co. Ltd in order to handle the deals of Export and obtained the License of Export and Import in 2008.
Since 1986, Cixi flowmeter Co. Ltd has been dedicating itself to research and manufacture of various kinds of flowmeters and level meters. With sophisticated experience in technology and management, we has made a name for itself as an excellent manufacturer of various kinds of flowmeters ... View detail