Thermo Scientific iCAP Qnova Series, Руководство по требованиям предварительной установки

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General Preinstallation Information
Operating Environment
Thermo Scientific iCAP Qnova Series ICP-MS Pre-Installation Requirements Guide (P/N BRE0006946, Revision B) 6-9
Electrostatic Discharge
Static charges and electrostatic discharge (ESD) are common natural
phenomena that occur in many ways. Although ESD may not always be
perceptible to a human being, it can damage the electronic components
of your instrument. Thermo Scientific instruments are designed to
withstand electrostatic discharges (ESD) up to 4 kV (air discharge) and
4 kV (contact discharge) with all panels in place. However, if the panels
are removed and the PCBs are handled without proper precautions, the
electronic components might be damaged or fail prematurely. Static
electricity can develop in a variety of ways. A few examples of how
electrostatic charge can develop are as follows:
•
When walking across a carpet in a room that is at 20% relative
humidity, as much as 35000 V of electrostatic potential can be
generated on the surface of your body. This same motion in a room
at 80% relative humidity generates about 1500 V of electrostatic
potential.
•
Sitting and working in a chair padded with polyurethane foam in a
room at 20% relative humidity can cause as much as 18000 V of
electrostatic potential to develop on your skin, or 1500 V at 80%
relative humidity.
•
Working in laboratory coats and clothing made of synthetic fibers
can cause accumulation of static electricity on your skin.
•
Polystyrene cups and packing materials typically have a considerable
electrostatic charge on them.
Many electronic components can be damaged by a discharge of
electrostatic potential of as little as 50 V. ESD damage can be
catastrophic causing your system to cease functioning. More commonly,
however, ESD damage might cause latent problems that are detrimental
to sensitive electrical components, causing premature failures.
Therefore, Thermo Fisher Scientific recommends the following
precautions, especially when operating your system at the lower end of
the relative humidity specification listed above:
•
Use a static-dissipating floor covering (such as tile or conductive
linoleum) in the room that houses your instrument.
•
Use laboratory chairs covered with natural fiber or other static-
dissipating material.
•
When operating the instrument, wear laboratory coats and clothing
made of natural fiber or other static-dissipating material.
•
Do not place polystyrene cups or packing materials on the
instrument.