4262 Load cells junction box
The load cells junction box type 4262 is designed for the parallel connection of up to four load cells; it is used in weighing systems where more than one load cell is installed, or when the distance between the load cell and the instrumentation is requiring an extension cable.
The grey-painted aluminium junction boø has usually overall dimensions of 165x140x68 mms, with 4 holes for M6 screws, center distances 144x125 mms; in some cases, the circuit can be mounted into a larger box, together with other devices, such as signal conditioning boards.
A special version, for the individual connection of two load cells with separate output cables, is also available.
The standard version has galvanized cable entries (1/2” SPT, to connect pro-tecting conduits or sheaths) for the input and output cables; on request, cable clamps or connectors can be installed.
The cover is provided with a rubber continuous sealing, and 4 screws at the corners; if the sheaths are correctly fastened, the protection grade of the box is IP65.
The parallel connection of the load cells is effected by means of a printed circuit board provided with binding posts:
* the load cells will be connected with 4 wires (±EXC, ±SIG) and the shield; if the load cell cable has 6 wires the wires +EXC / +SEN and -EXC / -SEN are to be connected together;
* the connecting cable to the electronic apparatus should have 6 wires (±EXC, ±SIG, ±SEN) and the shield.
In some applications, the circuit board is provided with a tare suppression Circuit: the coarse zeroing will be effected by means of the 4 DIP switches which are connecting the resistors (the proper adjustment of switches ON and OFF will be found by trial), while the fine zeroing is effected by the trimmer marked ZERO.
Hộp nối dây trung gian cho load cell và bộ điều khiển 4262 BCS Italy
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