Multi-Range Tester
Installation, Operation, and Maintenance
Features
• Tests static dissipative shoes per
ANSI-Z41 Standard
• Tests foot grounders
• Tests wrist straps and coil cords
• Fast response - detects intermittent
failures in wrist straps and coil
cords
- All types
- When being worn (system tests)
- When not being worn
- Detects intermittent failures such
as connection to resistor
• 30 VDC test voltage
• Verifies outlet’s polarity and
ground integrity
• Audible and visual indication
PS-2094
7/05 Page 1 of 4
Description
The ESD Systems.com 41220 Wrist
Strap/Footwear Tester is a versatile,
low-cost test instrument which
confirms the integrity and safety of
the static discharge path from the
operator to earth ground via wrist
strap and foot grounding systems.
This product can be used as one of
the tools to fulfill the ANSI ESD
S20.20 paragraph 6.1.3.2
“Compliance Verification Plan.
Verification should include routine
checks of the Technical
Requirements of the Plan.” By
touching the test button on the
Multi-Range Tester, a person can
quickly and easily ensure that his/her
wrist strap or foot grounding system
contains adequate current limiting
resistance and that there is continuity
from one’s skin to earth ground. The
Model 41220 also detects
excessively dry skin, poorly fitting
wrist straps, and intermittent wrist
straps and coil cords.
The Model 41220 includes a number
of innovations:
•
Outlet Wiring Verification:
When plugged into an AC outlet
the yellow lamp lights if the
polarity is correct and the path to
earth ground via the equipment
ground (green or green and
yellow wire) is intact. If either
condition isn’t met, the alarm
sounds continuously.
•
Detects intermittent wrist straps
and coil cords:
Coil cords and
fabric wrist straps often become
intermittent before they fail
completely.
•
30 VDC Test Voltage:
This is
sufficient to overcome the
inaccuracies of 9 volt battery-
powered wrist strap testers and
high enough to comply with the
ANSI-Z41 standard for Static
Dissipative Shoes.
•
Transient and Noise Immunity:
Circuitry is impedance protected
from line conducted voltage and
current transients and surges.
General Instructions
In the following test configurations,
the 41220 can be used to test wrist
straps, foot grounders, or shoes
while they are worn. Model 41213
will also allow the user to test
footwear.
Tech Brief
Figure 1. ESD Systems.com Multi-Range Tester, Item No. 41220
Made in America
© 2005 DESCO INDUSTRIES INC.
Employee Owned
