Conductivity/Resistivity Analyzer/Controller
9782 Series Conductivity/Resistivity Analyzer/Controller - Operator’s Manual
7/99
6-2
6.2 General Wiring Practices for I/O Wiring
WARNING
Wiring should be performed by qualified personnel only.
Safety precaution
WARNING
A disconnect switch must be installed to break all current carrying conductors. Turn off power
before working on conductors. Failure to observe this precaution may result in serious personal
injury.
WARNING
An external disconnect switch is required for any hazardous voltage connections to the relay
outputs.
Avoid damage to components
ATTENTION
This equipment contains devices that can be damaged by electrostatic discharge (ESD).
The damage incurred may not cause the device to fail completely, but may cause early failure.
Therefore, it is imperative that assemblies containing static sensitive devices be carried in
conductive plastic bags. When adjusting or performing any work on such assemblies,
grounded work stations and wrist straps must be used. If soldering irons are used, they must
also be grounded.
A grounded work station is any conductive or metallic surface connected to an earth ground,
such as a water pipe, with a 1/2 to 1 megohm resistor in series with the ground connection. The
purpose of the resistor is to current limit an electrostatic discharge and to prevent any shock
hazard to the operator. The steps indicated above must be followed to prevent damage and/or
degradation, which may be induced by ESD, to static sensitive devices.
Immunity Compliance
In applications where either the power, input or output wiring are subject to electromagnetic
disturbances, shielding techniques will be required. Grounded metal conduit with conductive
conduit fittings is recommended.
Conform to code
Instrument wiring should conform to national and local electrical codes.
