Hach 3700 Series Basic User Manual page 9

Figure 5 Wire preparation
3
1 Inner shield wire
4
2 Outer shield wire
3 Twisted pair, yellow wire and green wire
4 Twisted pair, white wire and blue wire
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.
sc controller
Connect the sensor to an sc controller with an inductive conductivity digital gateway. The digital
gateway converts the analog signal from the sensor to a digital signal.
As an alternative, connect the sensor to an sc200 controller with an sc200 conductivity module. Refer
to Connect the sensor with a module
3
The shield wire for the green and yellow twisted pair
4
The shield wire for the sensor cable
5
User supplied
6
The inner conductor shields are foil tubes with a conductive interior side and a nonconductive
exterior side. Make sure to keep the electrical isolation between the interior side of the inner
conductor shields. Make sure that the interior side of the inner conductive shields is not exposed.
5 Red wire
6 Clear heat-shrink tubing
7 Black heat-shrink tubing
8 Inner conductor shields
N O T I C E
on page 13.
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English 9