DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website: Desco.com
TB-3017 Page 1 of 2
© 2016 DESCO INDUSTRIES, INC.
Employee Owned
Made in the
United States of America
Wrist Strap Tester
Installation, Operation and Maintenance
Description
Per ANSI/ESD S20.20, test equipment is required to enact
the Compliance Verification Plan Requirement. Test
equipment shall be selected to make measurements of
appropriate properties of the technical requirements that are
incorporated into the ESD program plan. The Wrist Strap
Tester can be used to fulfill ANSI/ESD S1.1, “The wrist strap
system should be tested daily to ensure proper electrical
value” (Annex A3). Being a portable battery powered tool,
it is perfect for small labs or for a supervisor to spotcheck
workers and/or ensure compliance.
The Wrist Strap Tester is a battery operated “on demand”
wrist strap tester. When the wearer of a wrist strap plugs
in their coil cord and touches the metallic surface of the
Wrist Strap Tester, a path for current flow is completed from
the wearer’s skin, through the wrist strap. This action will
cause the green “test good” LED to illuminate as long as the
resistance of the circuit path is between 750 kilohms and 10
megohms.
Packaging
1 Wrist Strap Tester
1
9V Alkaline Battery
1 Hook and Loop Fastener Strip
1 Certificate of Calibration
April 2016
Figure 1. Desco 19240 Wrist Strap Tester
Installation
Open the Wrist Strap Tester’s battery compartment and
install the included 9V battery. Use the included hook
and loop fastener strip to mount the tester to a wall or
worksurface.
NOTE: The low battery indicator flashes briefly every time
the unit is used. Replace the battery once the indicator
becomes constant during testing.
Operation
1. Fit the wristband snugly onto your wrist.
2. Snap the wrist cord to the wristband.
3. Plug the wrist cord into the Wrist Strap Tester.
4. Push and hold the test button until the test results are
displayed.
5. An audible alarm will sound if the test fails. Verify
that your wrist strap is being worn correctly or needs
to be replaced. If your test result fails high, try applying
an approved dissipative hand lotion such as Menda
Reztore™ ESD Hand Lotion to your wrist.
TECHNICAL BULLETIN TB-3017
Figure 2. Using the Wrist Strap Tester and recording
results
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