Tag Archives: transit cases

If it Needs Connecting, it Needs an I/O Panel

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I/O panel allows for cable connection in transit casesSomething first-time transit case buyers often overlook is adding an I/O panel for easy cable connection. Without it, the case is little more than a storage box, albeit one providing protection from temperature extremes, dust, humidity and shock impact. Using the equipment inside means either taking it out of the case or running with the case open and cables fed in. Either option negates the purpose of the case. Continue reading

Case Color and Internal Temperature

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Color choice affects transit case temperature.
White or light gray cases reflect the most sunlight (Impact Cases)

Leave a transit case in the sun and the interior can get hot enough to kill electronic components.  Inlets and outlets for convection mitigate the problem if the ambient air is cool enough.  But, they may draw in dust and moisture.  Active cooling – thermoelectric or air conditioner – is an alternative but incurs installation, weight and extra costs. Continue reading

Cases That Protect Against EMI: Part 2

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Designed cases to shield electronics from EMI.
Aluminum case attenuates EMI, 8 to 12 GHz.

Electromagnetic Interference (EMI) can affect electronics, disrupting timing circuits and corrupting signals. If sufficiently powerful – perhaps a pulse from a nearby radar installation – it can induce damaging voltage surges in wiring. There’s even evidence of EMI damaging the read/write heads of hard drive storage units. Continue reading

Electrical Shielding and Transit Cases: Part 1

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Electronics and EMI shielded cases
EMI Lid Gasket

Modern electronics are very vulnerable to Electromagnetic Interference (EMI), sometimes called Radio Frequency Interference (RFI).  It’s not just lightning strikes, whose destructive potential is well known.  Radar pulses, radio and microwave emissions, cellphones, wireless routers, and the humble microwave oven can affect microprocessor-based systems.  It disturbs timing and corrupts data. Continue reading

Choosing the Right Cooling for Your Application

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Cooling for your application.
Transit case with climate control by CP Cases

Any time you’re buying a case to hold powered-up electrical equipment, cooling should be a top concern. Without it, signals degrade and electronic components are likely to fail. Convective airflow (letting cool air in at the bottom and warm air leave from the top) might be appropriate for low ambient temperature, dust-free conditions. But most applications need a more sophisticated solution. Continue reading

Choosing the Right Humidity Indicator

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Maximum Humidity Causes Mold and will Corrode Case Contents
Humidity Indicator Card

In the desert, relative humidity levels may be as low as 5%. In the tropics, 100% is possible. Anything over 40% is generally considered humid. Humidity causes metal to corrode and mold to form. Lower humidity is a problem too, as drops in temperature cause condensation. If that happens inside a transit case or shipping container, the contents can be damaged or completely ruined. Continue reading