The Shanxi Province some oil industry group company host camp service for the petroleum and the gas probing, the development, the refinement, the chemical industry and the sales work, at present is the Chinese fourth big petroleum company. As a result of company work surface broadness, as well as the oil industry itself characteristic, this company needs information gathering which produces many dispersible equipment, and transmits the control center, carries on the unification processing. Therefore, has then had long-distance range gathering, the transmission data technical difficult problem.

Problem analysis:

This company's present situation is: Has the massive measuring appliances, the instrument in the refinery scene (for instance surveys flowing tubing head pressure pressure gauge, tank gauge, flammable gas instrumentation and so on), these equipment continuously have the massive monitors data, but these data processing centers actually are located outside several dozens kilometers. On the one hand, needs the monitor data acquisition which the scene measuring appliance, the instrument has to transmit to several dozens kilometer outside DCS system processing center; On the other hand, needs the system command transmission to several dozens kilometer outside scene equipment. This will certainly to cause a series of technical difficult problem: How guarantees the long distance transmission the information to be accurate, promptly to deliver; How should to in the long distance transmission disturbance question; How avoids the equipment appearing each kind of safety factor (electric circuit not to get older or chemistry corrosion and so on)... ...

Solution way:

Facing this kind of complex situation, this refinery after the research comparison, decided uses Sunix three peaceful companies FTC1239 to solve this problem. FTC1239 is 三合一the contact surface RS-232/422/485 string mouth extension optical fiber bidirectional switch. Uses FTC1239 and the refinery scene measuring appliance, the instrument connection, through the A/D data acquisition and the transformation, becomes 485 signals, finally FTC1239 transforms again it for the optical fiber signal carries on the transmission. Moreover also has part of 422 signals also to pass to after configuration software on the optical fiber. Is delivers inside the monitoring room in other the DCS system, because the DCS system is the collection form, therefore the consideration transformation is 232 signals. Like this may collect in the monitoring room disperses the data one by one which the scene comes, again passes through the FTC1239 transformation after the corresponding 23.2/422/485 billion signal through HMI (man-machine contact surface), processing and the demonstration and the monitoring and so on IPC. (The following chart shows)

Sunix FTC1239 may transmit the signal distance to reach 40KM, the baud rate reaches as high as 460Kbps,; And provides the photoelectricity isolation, the surge protection wave, especially leads the automatic detection, the guide rail assembly, exterior binding clamp mains input (12~48VDC), with the DTE/DCE cut switch function, may guarantee the long distance transmission the security, is avoids the electrical interference and the surge (突波), the lightning, or chemistry corrodes harsh industry environment application perfect solution.

Attaches: Sunix FTC1239 detailed material:

* Extends the RS-232 transmitting range
- The single model optical fiber reaches 40 KM ¨C FTS1239
- The multi- molds optical fiber reaches 2 KM ¨C FTS1239M
* Has four RTS+/- RS-232 to the RS-422/485 transformation the CTS+/- pilot wire
* The RS-422/485 automatic diagnosis cut electric circuit (AIS) the function does not need the switch establishment
* RS-422/485 shakes hand the agreement function, avoids the data overflow, guarantees the data transmission
* RS-485 automatic RTS signal control l (ARSC™) Delta Sweeps �?may carry on the automatic data to flow to the control
* RS-485 programmable RTS signal control (PRSC) function, flows to through the software control data
* 25KV the ESD surge (突波) protects & the 2.5KV photoelectricity isolation protection (to be possible to elect)
* The baud rate reaches as high as 460 Kbps and has the baud rate automatic detection function
* Avoids the electric circuit getting older or chemistry corrodes, power source reversed polarity protection
* Exterior 12~48V DC binding clamp power supply or 12V DC power source power supply
* The wall hanging and the DIN-Rail guide rail type installment, turns on the type connection box to facilitate the RS-422/485 wiring
* The size is compact, namely inserts namely uses