Options
PR5230 Instrument Manual
EN-32
Sartorius
3.2.8.3
Potential-free Load Cell Supply Voltage
The instrument with option WE1 will be delivered with an intrinsically safe circuit which is galvanically
connected with the equipotential bonding (PA).
Jumper
J250
At distances >50 m a potential-free load cell supply voltage is required. This is done as follows:
Cut the jumper
J250
on the weighing electronic board.
Turn the remaining wire leads upward and cut them just above the board. Make sure that both contacts
have a minimum distance of 2 mm and don’t touch other potentials.
If the jumper
J250
is open, the intrinsically safe circuit is isolated from the housing (PA) at a minimum test
voltage of 500 V.