Extech Instruments 7470 Operation Manual page 24

2.2.4. Environmental Conditions
This equipment is intended for indoor use only. The equipment has been evaluated
according to Installation Category II and Pollution Degree 2 as specified in IEC 664.
This instrument may be operated in environments with the following limits:
Temperature..................... 32° - 104° F (0° - 40°C)
Relative humidity..............20 – 80%
Altitude............................ 6560 feet (2,000 meters)
NOTE: Keep the ventilation slits uncovered during operation. Failure to do so could
cause the instrument to overheat and may damage internal components.
Storage and Shipping Environment
This instrument may be stored or shipped in environments with the following limits:
Temperature..................... -40° - 167° F (-40° - 75°C)
Altitude............................ 50,000 feet (15,240 meters)
The instrument should also be protected against temperature extremes that may cause
condensation within the instrument.
Safe Lifting and Carrying Instructions
Proper methods of lifting and carrying can help to protect against injury. Follow the
recommendations below to ensure that instruments are handled in a safe manner.
1.) Determine if the instrument can be lifted by one individual or requires additional
support.
2.) Make sure that your balance is centered and your feet are properly spaced,
shoulder width apart behind the instrument.
3.) Bend at the knees and make sure your back is straight.
4.) Grip the instrument with your fingers and palms and do not lift unless your back
is straight.
5.) Lift up with your legs, not your back.
6.) Keep the instrument close to your body while carrying.
7.) Lower the instrument by bending your knees. Keep you back straight.
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Failure to operate this instrument within the specified conditions
could result in damage.