Operating Environment; Temperature And Humidity; Environmental Protection; Hazardous Areas - Mettler Toledo IND780 Guide D'installation

Before plugging in the terminal, make sure that the voltage stated on the terminal's label matches
the local power supply voltage. If this is not the case, do not connect the terminal under any
circumstances.
Although the IND780 is ruggedly constructed, it is nevertheless a precision instrument. Use care in
handling and installing the terminal.
1.3.

Operating Environment

When selecting a location:
• Choose a stable, vibration-free surface
• Ensure there are no excessive fluctuations in temperature and no direct exposure to sunlight
• Avoid drafts (for example, from fans or air conditioning)
• Readjust (calibrate) the terminal after any major change of geographical position
1.3.1.

Temperature and Humidity

The IND780 can be operated at temperatures and relative humidity conditions as listed under
Operating Environment in Table 1-1. The terminal can be stored at temperatures ranging from –40°
to 60° C (–40° to 140° F) at 10 to 95% relative humidity, non-condensing.
1.3.2.

Environmental Protection

The harsh enclosure meets IP69K requirements. The Panel Mount front panel sealing provides type
4x and type 12 protection—comparable to IP65 rating.
1.3.3.

Hazardous Areas

Not all versions of the IND780 can be operated in areas classified as Hazardous by the National
Electrical Code (NEC) because of the combustible or explosive atmospheres in those areas. Contact
an authorized METTLER TOLEDO representative for information about hazardous applications. When
an approved IND780 is installed in an area classified as Division 2 or Zone 2/22, special AC
wiring requirements must be met. See document 64063214, IND780 Division 2, Zone 2/22
Installation Guide.
1.4.

Inspection and Contents Checklist

Verify the contents and inspect the package immediately upon delivery. If the shipping container is
damaged, check for internal damage and file a freight claim with the carrier if necessary. If the
container is not damaged, remove the IND780 terminal from its protective package, noting how it
was packed, and inspect each component for damage.
64057253 | 14 | 08/2014
THE STANDARD IND780 IS NOT INTRINSICALLY SAFE! DO NOT USE IN AREAS CLASSIFIED
AS HAZARDOUS BY THE NATIONAL ELECTRICAL CODE (NEC) BECAUSE OF COMBUSTIBLE
OR EXPLOSIVE ATMOSPHERES.
WARNING!
METTLER TOLEDO IND780 Installation Guide
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