ESI-870 Resistance/Resistivity Indicator
8
using the front panel Auxiliary Connection, and Resistance Point to Point (Rtt)
when using the two Resistance Reference Auxiliary Connections located on the top
end of the instrument.
1. When the ESI-870 is used to measure Surface Resistivity of a Packaging
Material in Ohms/Square per ASTM D-257, the bottom two brass
electrodes are firmly placed against the material, and ESI-870 actuated.
a. The resistance between the two electrodes is displayed on the
LED's and approximate surface resistivity in Ohms/Square is read
from the UPPER scale, above the LED's.
b. The color indication and scale notes describe the material's
approximate Static Control Classification in accordance with
Electronic Industries Association Packaging Standard, EIA-541, as
follows:
(1) The Yellow LED lights indicate the material is in the
"Conductive" range, i.e., less than 1.0x105Ohms/square.
(2) The Green LED lights indicate the material is in the "Static
Dissipative" range, i.e., greater than 1.0x105to less than
1.0x1012 Ohms/square.
(3) The Red LED lights indicate the material is "Insulative", or
greater than 1.0x1012 Ohms/square, and possibly greater
than the range of the ESI-870.
c. Note that when the instrument is used for Packaging Material
Surface Resistivity in Ohms/square as described above, the
equivalent Surface Resistance in accordance with ANSI/ESD
STM11.11 Standard is described on the LOWER Scale. See
"Surface Resistance in Ohms per ANSI/ESD STM11.11: The
LOWER Scale Resistance Measurement Function" below, for
further information.
2. When the ESI-870 is used to
measure Resistance of a
Surface to Ground (Rtg) Ohms,
the front panel "Auxiliary
Connection -- Resistance to
Ground" connection is used with
the provided six foot lead/phone
plug accessory.
a. The ESI-870 is placed on
the surface to be
measured to ground.
