2015年6月30日星期二

fuel dispenser "physical" need attention

Private cars increased vehicle fuel continued price increases, consumers are highly sensitive to the fuel dispenser metering problems. Zibo City, has been measured by the gas stations within the city (dot) fuel dispenser mandatory verification work cycle. Consumers should show whether the fuel dispenser refueling note pasted on the panel compulsory verification pass mark, and in the period.
Strict verification procedures to produce different color for each fuel dispenser test cycle tamper seal, the confirmation and certified by fuel dispensing meters through the flow meter, sensors, computer CPU motherboard and CPU board the fuel dispenser tax these three can change measurement accuracy at the site of the fuel dispenser seal intact in the case, then these three parts plus a one-time inspection seal this period of strong color, and require the person in charge in the field test station on the record "seal intact" column signature recognition, and regular and irregular supervision and inspection measures to ensure that the tank automation system will not be artificially changed measurement accuracy. After verification of the eligibility of the fuel dispenser, in its display panel pasted prominently on mandatory verification pass mark, fill the test is valid mark. Expired without for examination or test failed fuel dispenser shall not be used.
Consumers should show whether the fuel dispenser refueling note pasted on the panel compulsory verification pass mark, and in the period of validity; before refueling fuel dispenser should check the oil information on the display, except unit price display, the other display should be zero ; After refueling, should pay attention to timely verify the number and amount of fuel, and request an invoice; for safe travel, plus refueling Do not overfill the fuel tank, under normal circumstances can be applied to the rated capacity.

2015年6月26日星期五

It works on small fuel dispenser analysis:

Small sunken oil fuel dispenser into type fuel dispenser, self-priming fuel dispenser in two ways:
First, the sunken oil fuel dispenser formula
1. Small fuel dispenser gun, the signal sent to the electromagnetic switch appliances chamber
2. The electromagnetic switch action, the 220V power supply to the sink pump
3. Shen pump action, to transfer the oil to heavy duty fuel dispenser via line
4. A small oil fuel dispenser after the filter and the solenoid valve is opened when the flow meter
5. The oil through the flow meter:
(1) oil along the hose, from, oil gun oil. (2) the meter movement, as measured by the pulse generator transmission signal to an electronic board
Second, self-priming dispenser
1. Small multi product dispenser gun, the signal is transmitted to the fuel dispenser electronic board
2. Small fuel dispenser electronic board signals transmitted to the motor power supply board
3. Give power to the motor power supply (110V or 220V) the motor action
4. After the motor is driven pump, the pipeline would draw oil from the oil bath to fuel dispenser
5. After the oil filter and when the solenoid valve is open, flow meter
6. oil through the flow meter:
(1) oil along the hose, from, oil gun oil. (2) operation of the flowmeter, the signal transmitted by the pulse generator
Small fuel dispenser card issued by the computer will start signal post-ash disposal to start the motor, and the display of the original measurement data back to zero, while the rotation motor driven pump, the oil pressure into the oil separator, the oil and gas separation, fed Meter measurement and through the hose, gun oil to pay for the oil by oil container. At the same time to count and measure the piston moves back and forth in the process, continue to promote the rotation meter rotating elbow. Rotation of the rotary elbow and led the rotation measurement sensors generate metering signals fed to the computer, after treatment, after calculation, simultaneous display of the actual amount of fuel in the fuel dispenser's sides display.
Small fuel dispensers which have an important point: the motor fuel pump is driven by the oil into the oil and gas separator, and then through the oil gun refueling.

2015年6月22日星期一

What precautions pump removal and re-equipped with a small fuel dispenser?

Small fuel dispenser as part of the body except the vane pump, the rest of the important part is relatively small fuel dispenser pump. Small portable fuel transfer pump oil pump is the power source of the hydraulic system when removing and re-install the pump, any negligence, any error method, may result in an accident or make the pump is not working properly, so the removal and re small automatic fuel dispenser pump equipped with a lot of attention, as follows:
1, when mounted pump cover. Copper sleeve should be coated with a little grease in order to mounting oil seal and protection. When mounting the pump cover screws, should be strictly in accordance with the order of twice the diagonal tighten each screw tightening torque knob should be basically the same, so as not to pump cover and pump combination Mifengbuyan.
2. Before disassembling the pump cover shall sanding Woodruff keyway on the shaft, so as not to dismantle the pump cover scratches on Woodruff keyway burr seal, causing leakage.
3, before the pump is mounted on the pump separator pad should be carefully examined for damage, whether to put reversed. Pump installed, should ensure that the center plane of symmetry pump pulley and motor pulley central plane of symmetry in the same plane, the pulley does not allow a clear swing and axial runout phenomenon.

2015年6月18日星期四

Small fuel dispenser pump in order to avoid the matter failure to note what?

Caution Disassembly and reassembly of the small china fuel dispenser oil pump requires very close attention. The requirements of the pump seal, no leakage, the moving parts can move flexibly cable wiring, noise and vibration at work. So the various demands of the portable fuel dispenser is also very strict. For these considerations require more attention, as follows:
1, after the rotor assembly into the pump chamber, the application of hand (or stuck with a rigid shaft keyway hand) rotating rotor blades look carefully at whether the retractable blade slots, while viewing the rotor blade is higher. If higher rotor blades, the blades shall be polished. So that the rotor contour or slightly below the rotor.
2, before the service, it must be reliably cut off the power. Remove the belt from the pulley, so as to avoid accidental injury. Ready tipping the oil container to avoid oil pump and oil separator drain spilled everywhere. Finally, before you re-install the pump, use kerosene to clean all parts, do not allow any sticky dirt to avoid scratching the pump, resulting in a new fault.

2015年6月14日星期日

Small fuel dispenser during refueling what issues need attention?

Oil generally flammable liquid, so the use of a small automatic fuel dispenser refueling process needs to always pay attention to safety. We know that each station has a variety of safety regulations and precautions, warn customers of compliance. Difficult to find, in fact, these regulations, guidelines and precautions are all fuel dispenser refueling station and the universal. Then use a small fuel dispenser refueling in the end need to pay attention to what security issues?
1. In the gas station area prohibited fireworks, this is every incoming station personnel are aware of.
2. The gas station is in the area of ​​construction may not flare, flare up when necessary, for hot work procedures and in accordance with relevant fire regulations must refer to the "Oil Depot flare safety management approach"; the gas station area non-combustible and piled Staff forbidden to wear shoes with nails and easy to produce static clothing posts;
3. Security settings must be eye-catching signs, and a person responsible for inspection tours; and when refueling, non-motor vehicle collision with refueling gun exhaust port; not free to move fire equipment must be regularly checked and replaced or supplemented extinguishing agents;
4. car owned by a diesel pump discharge, must not exceed the specified speed guarantee; the last unloading gasoline, have gravity, non-pump unloading;
5. When unloading gasoline stations also need to pay attention to many issues is clean and tidy, no rubbish dirt. Are fire extinguishers placed correctly, whether the number of deficient. Tools, equipment, equipment is neatly stacked, unimpeded or mix of people at risk. Lighting and circuitry damage. There are no unusual suction pipe air intake phenomenon. electronic diesel fuel pump leaks at the connection pipe. Test oil fuel dispenser, a hose, refueling gun parts for oil leakage. Safety accessories on the tank if it is safe and effective.

2015年6月10日星期三

Verification fuel dispenser traffic.

fuel dispensing machine verification requirements must be clearly marked on the tanker and flow measurement transducer measurement range, the flow range with a portable fuel dispenser nameplate is generally (5 ~ 55) L / min, however, due to the run environmental, installation conditions and pipe length, resistance, pressure and other factors, usually reach the upper flow range flow. Through a lot of practice shows that with tanker traffic range roughly (25 ~ 40) L / min. Different flow measuring point, the purpose is to detect refueling tanker metering performance at high flow and low flow. In accordance with the rules of order, the certification process should be separately for each flow point (0.90 ~ 1.0) Qmax and (0.36 ~ 0.44) Qmax measurement, but also on the initial verification (0.14 ~ 0.18) Qmax flow measurement to the point. The largest tanker to tanker traffic site can achieve maximum flowmeter. When gun control measure oil flow, oil injection point in the flow rate gauges should try once filled. This work should have certain skills and proficiency, in addition, understanding test and measurement time staff should also fit, requires repeated practice.

2015年6月5日星期五

Calibration method of humidity in temperature sensor

Calibration method of humidity in temperature sensor

Moisture in the temperature and humidity sensor calibration and testing of the two methods, submersible fuel pump ,namely the use of reference humidity or with known properties of the instrument were compared, the reference humidity can use thione or hydrogen potassium chloride solution to build, automated fuel management system or using saturated salt solution to build, below small make up for everyone to introduce the concrete temperature sensor humidity calibration method.