ESI-870 Resistance/Resistivity Indicator
14
8.
Read the LED indication in Ohms from the UPPER scale.
D.
Resistance Point to Point (Rtt) Measurement Procedure
When the ESI-870 is used to measure Resistance between two points, i.e.,
Resistance Point to Point (Rtt) in Ohms, the two "Resistance Reference Inputs &
Auxiliary Connections" located at the top end of the unit are used with additional
test leads.
1.
Insert two banana plug equipped leads into the "Resistance Reference
Inputs & Auxiliary Connections" and place the electrode switch to the
“ELECTRODES OFF” position.
2.
The opposite ends of the test leads are connected to the object to be
measured, i.e., equipment points, test fixture, electrodes, etc.
3.
The ESI-870 is hand held, being careful not to touch the brass electrodes,
then push the "Press to Test" button.
a.
Important
Note:
If you do not enable the “ELECTRODES OFF”
switch, the brass electrodes are active when these two Auxiliary
Connections are used. If body or material contact is made with the
brass electrodes during this measurement mode, the indicated
reading may be affected.
b.
You will notice the LED's will light as they automatically range to a
final measurement
c.
Continue pushing the "Press to Test" button until one (1) LED
remains on, indicating a stable measurement. (about 5 seconds)
4.
The
resistance
in Ohms
between the two lead connection points is read
from the UPPER scale, above the LED's.
Note:
The UPPER Scale unit of measure in this Rtt measurement
mode is
Ohms
,
not Ohms/square.
E.
Other Resistance Measurements Using the ESI-870
As a basic resistance instrument, the ESI-870 can be used for general resistance
measurements of virtually any ESD Controlled product or material. To increase its
flexibility, one may employ fixtures, NFPA electrodes, extended leads, clips or
clamps for evaluating the following items.
Floors, Mats, Worksurfaces, Chairs, Carts, Body Resistance, Tapes, Conveyors,
Footwear, Assembly Equipment, Garments, Tools, Raw Materials, Production Aids,
Tote Boxes, Packaging Materials, and others.
