Censtar is a fuel dispenser suppliers established in 1992, located in Zhengzhou City, Henan province, central China.

758 employees and possesses 80000M2 land, with a fixed asset of 800 million RMB. censtar

Annual production Capacity reaches 100,000 nozzles of Fuel Dispenser.

Main products as Fuel dispensers, Automatic Tank Gauge System, Petrol station management system and Petrol stations IC card management system etc.

It is the first and sole dispenser pumps suppliers company that reaches annual output and sales more than 100,000 nozzles of Fuel Dispenser. Its production capacity ranks No. 1 in China and third in the world.

For 17 consecutive years, Censtar keep the No. 1 position of output and sales of fuel dispenser suppliers in China.

Censtar is a dispenser pumps suppliers focus on ensuring quality of care to our clients by placing their needs at the forefront of what we do.

Our Mission is a best diesel pump manufacturers to provide complete Equipment Solutions to Retail Petroleum Industry.censtar

Service and quality is what we sell, peace of mind is what you buy.

we are seeking global co-operation agents for our products.

Fuel dispenser fuel oil sight glass, oil level gauge glass, sight glass oil level, oil watcher for fuel dispenser, widely used, easy for connecting.

• metric oil sight glass

  

Metric oil sight glass is a kind of large oil storage tanks precision  measuring equipment. sight glass level mainly includes the water level  controller, Dan Dan water detector, detector, tracking controller, differential  pressure sensor, etc.Pressure sensor with high accuracy and small range, with  two paragraph a detector and a paragraph a tracking controller, using the oil  level and differential pressure of the water level in the paragraph a fuel oil  sight glass suppliers, a certain period of the oil level in oil tank is  measured, reduce measuring absolute error, an order of magnitude increase the measurement precision.This device can be used for the CPC bit of precision  measurement, large storage tanks.

Metric oil sight glass observation hole, sight glass level, circulating oil sight glass, glass oil level indicator, oil sight gauge, the oil level of observation window, visual level speculum, visual level indicator, the level of visual observation, the fuel oil sight glass suppliers dome in the shape of a picture.
Sight glass level and liquid level indicator is used to provide a metric oil sight glass of fluid in the container or tank.Offers a variety of combinations of metal, plastic and glass, so as to adapt to different types of liquid and the pressure of the tank.This part also includes the thread plug, the tube plug, plug and packing breathing apparatus.These components are designed to be used to seal to provide all kinds of opportunities and in both metal and plastic.Types include magnetic filter (fuel oil sight glass suppliers), version and fill or drain tag, strip, splash guard and filters

2. oil level sight glass



Measurement tanker test tank neck has a oil level sight glass visual parallel to the liquid pipe and steel ruler, located in front of the oil tank sight glasstube camera to take pictures.

When there is fuel in the sight tube, the host computer through the camera returns to judge at this image detection and highly fuel tank oil tank sight glass has reached the detected values, the PC drive a stepper motor driven camera movement along the rail until the camera in sight tube level center. PC division determined by the regional ruler area, and then calculate the oil level sight glass overall brightness of the image and detects the level ruler color block.

3. oil sight glass level



Censtar confirmed by the oil sight glass level image edge detection scale value corresponding to the color of the block, and finally through the pixel ratio, calculated level of oil level sight glasses scale value. Level tracking system is a oil level gauge closed loop control system.


The first computer based on the obtained image information to determine whether the system is collected in the liquid level oil sight glass level as the liquid state and, if the head deviates from the state of the system, the system also gives the control strategy to drive the motor , driven lens shift, in the oil level gauge shortest possible time so that the whole system depends on the state level to reach. In this paper, based on the motor oil level sight glasses control scheme PID algorithm, which by analysis module and a control module of two parts.

4. fuel tank sight glass



Analysis module to determine an input oil tank gauges is to identify the state level and in the head, if uneven depending on the module but also estimate the amount of deviation. The control module using fuel tank sight glass analysis module provides information to adjust the state system, so that the camera lens and allow the camera to capture the level sight glass indicator at the head of state.

The system sampling interval of 0.05s, the control module by changing the pulse frequency of the motor to control the motor fuel tank sight glass speed by changing the phase of the pulse sequence to change the rotation of the motor. Stepper motor speed v = f * n, where f is the input frequency of the motor pulse, sight glass indicator is the motor's step size. Level input signal, i.e. the distance from the image center position of the digital signal obtained by the image processing computer. Stepper motor driven camera gradually close the image center, in general, "acceleration - constant - deceleration - stop" process. Since the oil tank gauges start-up phase stepper motor starter lower limit frequency, and requires a constant rate of frequency is greater than the starting frequency, there will be a short acceleration process.