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Safety Information
Intended Use
The 3M™ 746 Wrist Strap Tester was designed and tested to be used for
measuring the electrical resistance of single-conductor wrist strap assemblies.
General
The design of the 746 allows for testing of wrist straps while being
worn by a person or testing of the individual wrist strap components.
The 746 can be mounted to a wall or be used as a portable piece of test
equipment. It operates from a 120 Vac source through an AC adapter,
or a standard 9 volt battery. An internally set resistance range extends
from 750 K
Ω
to 10 M
Ω
. If the wrist strap resistance when tested is
within this range, a green LED will illuminate. If outside this range,
a red LED will illuminate.
Wrist straps are the primary method used to minimize charge
generation on the human body. They must be able to drain this charge
as rapidly as it is generated. For this reason, it is important to test
wrist straps on a regular basis to ensure they are functioning properly.
The test results should be recorded. The form on page 9 of these
instructions can be used as a logbook.
Read and Understand all Safety Information Before
Operating this Equipment
.
Explanation of Symbols
- Caution: read operating instructions.
- Warning: read operating instructions.
O.K. - See operating instructions for explanation of the indicator LED.
O.K. - See operating instructions for explanation of the indicator LED.
- See operating instructions for explanation of the indicator LED.
Battery
