U202-A Power board

U202-A Power board

Features :

Lighting-proof design

Linear powder design, the high and low voltage isolated

Weight:280g

100% Factory Tested.

of four-piston measurement transducer The upper subassembly includes inlet and outlet of oil. The export axis stretches out of measurement transducer from the hole of upper cover unit. The middle of frame unit is a solid chamber, connecting with four cylinders mounted stainless steel bushing. There is an oblong passage on top of each cylinder, which is communicated with lower part of cylinder. These oblong passages also communicate with annular grooves related on top of frame. Four pistons mounted idler wheels are installed respectively into bushings related, connecting piston with connecting rod at same axes. Camshaft unit insert into the oblong groove in middle of connecting rod. Shaft is supported by installing hole at lower frame and valve seat. D and U bearing are mounted in the two holes. Four end covers are installed at each end of frame, of which adjusting device being installed at one end cover to regulate the moving distance of piston concerned. Adjusting device regulates the discharge of measurement transducer so as to ensure the accuracy. Distributing valve and valve seat are fuel dispenser installed at top of frame unit. 1-Seal gasket 2-Upper cover unit/O-ring 3-Drive fork/output shaft 4-Spring\O-ring\valve cover\seal\gasket 5-Frame\distributing valve\valve seat\c fuel dispenser onnecting rod\cam\cam axis 6-Piston\clamp sheet\pin 7-End cover\adjusting bolt\gasket\regulating wheel Diagram 2-21: Exploded view of four-piston measurement transducer Working principle The pressured oil coming fro fuel dispenser m vapor separator or submersible pump flows into distributing valve via measurement transducer and continuously flow into relevant cylinder via the oblong passage at top of frame so as to drive piston moving. Likewise, the piston impels opposite piston through connecting rod, pressured oil flows out the outlet of upper cover via the passages at top of cylinder and then the inboard window of distributing valve. As piston move to and fro, camshaft is driven by trolley unit that making distributing valve and export axis rotation. W

s removed an invalid nozzle　　 i.e. one not permitted in the grade mask (FP Data Base Data_Id 25　　 Log_Noz_Mask). If this situation occurs the dispenser will reject the Release　　 command with a Data_ACK value of 6 (Command not accepted).　　 The FP receives a release and the FP moves to the STARTED state.　　 It is also possible to release a FP locally by a sales assistant (on attendant operated　　 FPs).　　 PCD Comment:　　 As most proprietary FP s only allow one transaction at a time the PCD will have　　 to manage multiple transaction itself (assuming that the PCD supports more than 1　　 transaction buffer).　　 As most proprietary FP s don t support assignment the PCD will have to manage　　 the assignment regulations itself.　　 Where the proprietary FP protocol doesn t indicate the selected nozzle the PCD　　 fuel dispenser will have no choice but to ignore the Log_Noz_Mask and release the FP.　　 Action : For preset or prepay mode the FP receives the　　 fuel dispenser Remote_Volume_Preset or Remote_Amount_Prepay data.　　 The FP receives Release_FP command.　　 Action : The FP fuel dispenser state change is send as an unsolicited data array　　 FP_Status_Message .　　 NOZZLE-DOWN The customer returns the first selected logical nozzle into its holster and the FP　　 returns to the IDLE state. This allows the customer to select another logical nozzle　　 from the same FP if the wrong one has been picked up.　　 Action : The FP state change is send as an

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