Electrical Connections - Hach MET ONE 3400 Série Manuel D'utilisation De Base

Always disconnect power to the instrument before electrical connections are made.
Obey all safety statements while connections are made to the instrument.
Electrostatic discharge (ESD) considerations
Potential Instrument Damage. Delicate internal electronic components can be damaged by static
electricity, resulting in degraded performance or eventual failure.
Refer to the steps in this procedure to prevent ESD damage to the instrument:
• Touch an earth-grounded metal surface such as the chassis of an instrument, a metal conduit or
pipe to discharge static electricity from the body.
• Avoid excessive movement. Transport static-sensitive components in anti-static containers or
packages.
• Wear a wrist strap connected by a wire to earth ground.
• Work in a static-safe area with anti-static floor pads and work bench pads.

Electrical connections

Connect probes, external power, cables and USB devices as shown in
Figure 2 Back view
1 Exhaust port
2 Serial communications RS485 connector
3 Auxiliary I/O port for the filter scan probe
N O T I C E
N O T I C E
4 Manifold controller connector or standard
RS232 port (available on 1 CFM units only)
5 Battery ports
6 Supplemental feet
Figure 2 and Figure 3.
English 9