U211-A Power Regulator

U211-A Power Regulator

Features:

Power in : AC 100V?00V; Power out : AC 200V , 2kW

Voltage protection device under unstable voltage

Easily installed into fuel dispenser

100% Factory Tested.

Packing:

Weight: Dimension:

10.3kg/case of 1 150×200×340mm/case of 1

dicator is installed between nozzle and measurement transducer, by which customer observes whether foam in delivering oil. Accuracy will be affected because of much foam or bubble. Diagram 2-33 is shown a common oil indicator in domestic market. Since this kind of oil indicator has big pass section than that of two ends of pipe, velocity of flow of passing oil is reduced so as to facilitate observation. If oil transparent, that is, no foam in it, fuel dis fuel dispenser penser is in normal state. If opaque with visible foam, it is shown that there is gas in oil. Don’t refuel until foam disappears in oil indicator. If passed long time, foam in oil indicator still exists so that the accuracy of fuel dispenser is affected, some troubleshooting measures on vapor separator should be considered. Disassemble low cover and examine gasket and joint face if found leakage. Oil in pipe should be discharged completely in maintenance, keeping appropriate tightness to bolts as reassembly in case of crunching glass. 1-Frame 2-Sink-screw 3-Seal gasket 4-Glass 5-Seal 6-Cover Diagram 2-33: Ball-shaped oil indicator structure Columnar oil indicator, shown in Diagram 2-34, is installed on the top of gantry fuel dispenser, the convex end connected with pipe jointer of fuel dispenser, the concave end of it with hose unit. Foam is observed through the glass pipe of columnar oil indicator. If found leakage, disassemble oil indicator from jointer, clean waste or replace damaged gasket. Replace glass pipe when found crackle on it. Be careful of reassemble hose jointer and oil indicator after maintenance in case of crunch glass pipe. 1-Frame 2-Glass pipe 3-Seal ring 4-O-ring Diagram 2-34: Columnar oil indicator Firstly empty fuel dispenser oil in fuel dispenser when deal with oil indicator’s tro fuel dispenser uble, for fear of oil splashing. There is a kind of method to empty here: loose bolt on corrugated pipe after start up fuel dispenser. In this state, no oil in tank is suck into fuel dispenser, but oil in fuel dispenser is discharged out continually. After stop

nge (Diffie-Hellman) a public　　 key technique.　　 During operation the data is collected at the COPT and encrypted under the DES　　 Encryption Algorithm creating an encrypted data block. Using DUKPT the encrypted　　 data is sent to the controller which can then be decrypted. The keys used by the COPT　　 may be changed at any time if compromise is suspected (or just for additional　　 secur fuel dispenser ity) without returning them to a key injection facility or taking a key loading　　 device to the site.　　 At the heart of the security structure is the use of Exponential Key Exchange to　　 initialize the COPT from the controller. This technique makes possible many of the　　 benefits mentioned earlier while providing a high level of security for data within the　　 system.　　 In the controller the data is decrypted. With the decrypted data in clear text in the　　 controller the controller is always a possible target of attack.　　 The method used to provide the initial key in the COPT is to calculate the key at both　　 the COPT and the controller. This method involves the transmission of intermediate　　 data between the controller and the COPT. In order to prevent discovery of the　　 encryption keys by monitoring the transmission link the COPT implements the　　 algorithm termed Exponential Key Exchange . This method is shown below.　　February 2006 IFSF - STANDARD FORECOURT PROTOCOL FP2_1.90　　 COMMUNICATION SPECIFICATION　　 fuel dispenser fuel dispenser Page: 37　　 Controller COPT　　 Controller calculates COPT calculates　　 R = mod q(a to the r powe

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