High-voltage barrier, Electrostatic discharge (esd) considerations, 10 and – Hach-Lange POLYMETRON 9500 User Manual User Manual
Page 13: Figure 6
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Figure 6 Top and bottom views
High-voltage barrier
High-voltage wiring for the controller is located behind the high-voltage barrier in the controller
enclosure. The barrier must remain in place except when installing modules or when a qualified
installation technician is wiring for power, alarms, outputs or relays. Do not remove the barrier while
power is applied to the controller.
Electrostatic discharge (ESD) considerations
N O T I C E
Potential Instrument Damage. Delicate internal electronic components can be damaged by static electricity,
resulting in degraded performance or eventual failure.
English 11
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