U613-B Explosion-proof Terminal Boxes

U613-B Explosion-proof Terminal Boxes

The boxes are suitable to be used in outdoor and indoor places of zones 1 and 2 where there is explosive mixture

Features:

Enclosure is made of casting aluminium alloy,

Surface is sprayed with plastics.

Connection with tube or through wiring.

Explosion-proof approva:l

The flow control valve has been tested and granted Ex approval.

The Ex-approval is EX m II T4.Ex certificate number is CE021037.

Package:

Product ID Net Weight Cross Weight Size

U614-A 33kg/case of 20

38kg/case of 20 5.2×25.5×18cm3/case of 20

oil, so as to reduce the volume of drained oil. Turn adjusting bolt clockwise to reduce discharge, anticlockwise to increase discharge. Therefore, changing the position of bolt enable discharge approach academic volume and reach the requirements on measurement transducer of national appraisal regulations. As two regulative bolts access to adjusting piston, the adjusting discharge in a circulation per bolt can be calculated in the following formula: △V = 1/2πd12 nt (2--4 ) △V ── adjusting value in per circulation; D1 ── diameter of regulative piston; n ── turning number of adjusting bolt; t ── screw- pitch of adjusting fuel dispenser bolt. There is another metal piston measurement transducer in current market. See the Diagram 2-19. Regulative piston is singularly installed in piston rather than connect with rod in this model. Its adjusting value in terms of per adjusting bolt is: △V = 1/4πd2 nt (2--5 ) Common failure and Troubleshooting Metal piston measurement transducer has the two common failures --- accuracy decline and mechanical trouble. Measure accuracy beyond scope The allowed measurement accuracy of fuel dispenser is ±0.3 %, r fuel dispenser epeated tolerance no more than 0.15 % according to the stipulation of JJG443-98 Fuel dispenser. The maximum allowed tolerance of min. measured valve don’t exceed ±0.5 %，its repeated tolerance no more than 0.25 %. The ratio of maximum flow (Q max.) to minim fuel dispenser um flow (Q min.) is 10 to 1. as fuel dispenser leave factory. The ratio should not be less than 5: 1 in inspecting at operation locale. All of exceeded tolerance is regarded as beyond measurement accuracy. There are many elements and reasons resulting in measurement accuracy beyond scope, including unstable hydraulic system (extensive pressure fluctuation), electric system failure, thick colloid in frictional interface, measurement transducer abrasion, etc. The last two reasons will mainly be introduced in this article. Regulating adjusting

€€ã€€ Bit 10=1 Car Wash Configuration prohibited.　　 By default a CD can configure all devices for which it has application　　 available.　　COMMANDS: By default on start-up a CD application will perform a check of the integrity of its database and automatically　　move into the closed state it can then move to the Idle state either automatically or via a cashier logon process.　　 80 Cmd W(1 2) M　　 Setup　　 (50H) Forces the CD to move to the SET-UP state.　　 81 fuel dispenser Cmd W(100) M　　 ExitSetup　　 (51H) Forces the CD to move to the INOPERATIVE state.　　 82 Cmd W(100) M　　 Reset　　 This command allows the CD to be reset. The primary use of this command　　 (52H)　　 is to restart the CD after a major error has occu fuel dispenser rred. This is a warm boot of　　 the CD.　　 This command does not cause the CD device to clear any memory or change　　 the status of any code or transaction related data.　　 83 fuel dispenser Cmd W(2) M　　 Open　　 (53H) Forces the CD to move to the IDLE state.　　 84 Cmd W(3) M　　 Close　　 (54H) Forces the CD to move to the CLOSED state.　　UNSOLICITED DATA　　 100

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