U102-A2 Pumping Unit

U102-A2 Pumping Unit

Materials:

Body: Aluminum (Spray-Painted)

seals: Buna-N

Technical Specifications:

Power:750-1000W

Flow Rate:45~90L/min

Rotary speed :630~730rpm

Noise: 68db(A)

Minimum. vacuum degree: 0.054Mpa

Pressure Drop: 0.12-0.25Mpa

Separate Ability of Oil and Air: >=20%

Features :

Positive displacement, self priming, internal gear type and adjustable bypass valve.

Designed for quiet, vibration-free operation.

Reusable suction strainer filter at inlet connection.

Reverse check valve at air separator float mechanism.

Check and relief valve at outlet of pumping unit.

100% Factory Tested.

Package:

Product ID Net Weight Cross Weight Dimension

U102-A2 18kg/case of 1 18.5kg/case of 1 36×32× 30cm/case of 1

s to quickly switch off power supply circuit in case that the associated circuit, connected power and used in explosive gas atmosphere, generate spark or become hot due to short circuit. Therefore, a reliable and valid safety barrier is very important to intrinsic safety fuel dispenser. The traditional safety barrier, adopting diode safety barrier, current fuse, voltage stabilizing diode and limited current resistance, is difficult to applicable to simple fuel dispenser due to expensive cost, large cubage and long time of melt. Owing to reliable performance, cost-efficient, quick response, electric safety barrier adopted VMOS component is widely mounted in most fuel dispenser at home and abroad. Diagram 3-19: Safety barrier sketch map 2.5 Drive circuit of motor and solenoid valve Diagram 3-20: Sketch map of motor driver 2.6 fuel dispenser Flux pulse converter (pulse sensor) Flux Pulse converter, also called pulse sensor, is used for converting the volume that discharged out of flow meter into pulse data so as to calculate in measuring CPU. At present, there are two kinds of popular pulse sensors in domestic market. One has double-way 30 pulses as per rotation of flow meter, the other double-way 50 pulses per rotation. Pulse sensor includes photoelectric sensor and Hall-effect Sensor. The circuit of popular photoelectric sensor is illustrated in Diagram 3-21 and 3-22. With the development of integrated circuit, a new kind of optical coupler is created, collecting the outside section of optical couple into inner so as to be simpler to use fuel dispenser . Diagram 3-21: Photoelectric fuel dispenser sensor circuit I Diagram 3-22: Photoelectric sensor circuit II 2.7 Operative switch Most manufacturers install operative switch on keyboard of fuel dispenser, though simple to technical solution, especially in preventing dangerous area in where install switch, the life service of keyboard is unable to be ensured due to so frequent operation. Therefore, the best solution is to install a touch switch on nozzle bracket. Mechanical key swit

FP2_1.90　　 COMMUNICATION SPECIFICATION　　 Page: 11　　 Table 1. Message Sequences Overview　　 MESSAGES SEQUENCES　　 Originator Recipient　　 Requesting data elements from a single database in a device　　 Read Message --　　 -- Answer Message or Acknowledge　　 Requesting data elements from multiple databases in a device　　 Read Message --　　 -- Answer Message　　 fuel dispenser -- Answer Message　　 åª?åª?媴　　 -- Answer Message　　 -- Acknowledge Message　　 Sending data elements to a device　　 Write Message --　　 -- Acknowledge Message　　 Sending unsolicited data elements with acknowledge　　 Unsolicited Data Message --　　 -- Acknowledge Message first Recipient　　 fuel dispenser -- Acknowledge Message fuel dispenser second Recipient　　 åª?åª?媴　　 -- Acknowledge Message last Recipient　　 Sending unsolicited data elements without acknowledge　　 Unsolicited Data Message --　　 NOTE - If a node cannot be reached with a Read or Write Message within eightã€

the 2,800 people directly affected, 850 would be flooded out of their homes. The project “will produce the most serious environmental impacts of any dam plan in the Amazon,�declares Glenn Switkes of the International Rivers Network, a green lobby group. He speaks for what looks like a feeble coalition of local interests and global NGOs, hardly an obstacle to the national quest for energy. Yet in Brazil the grandest schemes can be brought low by a recalcitrant regulator, a rogue judge or an angry citizen. A hunger-striking bishop derailed a pet project of President Luiz Inácio Lula da Silva, to divert water from the São Francisco River to the parched north-east. Promoters of the dams are therefore trying to turn a classic fight between growth and conservation into a marriage of the two. The 20 billion reais ($8.6 billion) proj fuel dispenser ect, which would be Brazil s third-biggest producer of hydroelectricity, aims for modesty. The taller of the two dams will be 15 metres (50 feet) high—a midget compared with the 196 metres of Itaipu, on Brazil s border with Paraguay. Its reservoir will not be much bigger than the river s natural high point, and the water s flow barely checked. Ways will be found to guide fish upstream. The project will invest in conservation, in an area notorious for deforestation and already opened up for development by the BR-364, a federal highway. “This region will be better and more protected with our intervention than today,� insists Mr Meireles. That argument is winning converts. The Inter-American Devel fuel dispenser opment Bank (IDB) is keen to provi fuel dispenser de finance and advice on how to reduce damage to the environment. Jorge Viana, the green-minded governor of the neighbouring state of Acre, has endorsed the scheme. Many environmentalists do not. It is folly to dam a river that carries half the sediment in the Amazon basin, according to Jorge Molina, a Bolivian hydrologist. The builders say that almost all the sediment will pass through. Mr Molina claims that the upstream Jirau