ESI-870 Resistance/Resistivity Indicator
10
e.
The
resistance
in Ohms
between the two lead connection points is
displayed on the UPPER scale, above the LED's.
Note:
The UPPER Scale unit of measure in this Rtt
measurement mode is
Ohms
,
not Ohms/square.
f.
The color indication and scale notes may,
or may not
describe the
material's Static Control Classification, depending on the material or
equipment being measured and the standard reference being used.
B.
Surface Resistance in Ohms per ANSI/ESD STM11.11: The LOWER Scale
Resistance Measurement Function
The LOWER scale is used in one (1) measurement application: Surface
Resistance of Packaging Materials in Ohms per ANSI/ESD STM11.11 Standard
test method. Note that the ESI-870
does not duplicate the
ANSI/ESD STM11.11
measurement
procedure. However, the measurement results correlate closely
with the S-11.11 data when compared under typical laboratory conditions.
1.
When the ESI-870 is used to measure Surface Resistance of a Packaging
Material in Ohms per ANSI/ESD STM11.11, the bottom two brass
electrodes are firmly placed against the material, and ESI-870 actuated.
2.
The resistance between the two electrodes are displayed on the LED's and
approximate surface resistance in Ohms per ANSI/ESD STM11.11 is read
from the LOWER scale, below the LED's.
3.
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 modified for ANSI/ESD
STM11.11 measurements.
a.
The
Yellow
LED
lights
indicate the material is
in the "Conductive"
range, i.e., less than
1.0x10
4
Ohms.
b.
The
Green
LED
lights
indicate the material is
in the "Static
Dissipative" range, i.e.,
greater than 1.0x10
4
to
less than 1.0x10
11
Ohms.
