SPI Ground Gard Traveler Operation, Troubleshooting And Calibration

Ground Gard Traveler
Operation, Troubleshooting and Calibration
Figure 1. 94312 Ground Gard Traveler

Description

The SPI Ground Gard Traveler is a portable, 3 Volt
battery-operated continuous wrist strap monitor. The
unit verifies electrical continuity between a wrist strap
worn by an operator and a ground reference. The
ground reference does not have to be electrically
connected to the earth. Rather it may be any
conductive object where assurance is needed that it is
at the same electrical potential as the operator. This
might be a workbench, a rolling cart, or a wire shelf.
The Ground Gard Traveler is designed for a standard,
single conductor wrist strap wire with an integrated 1
megohm resistance.

Packaging

1 Ground Gard Traveler
1 Ground Coil Cord
1 Bulldog Clip
2 AA Batteries
1 Certificate of Calibration
Features and Components (See Figure 2)
A. 12 VDC Power Jack: Connect the optional 95409 power
adapter here.
B. Power Switch: Slide the switch up to turn the unit off
and slide it down to turn it on.
C. Ground Jack: Where the ground cord banana plug is
inserted.
ESD Systems.com • 432 Northboro Road Central • Marlboro, MA 01752 • (508) 485-7390 • Fax (508) 480-0257 • Website: ESDSystems.com
TB-5504 December 2008 Page 1 of 2
TECHNICAL BULLETIN TB-5504
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Figure 2. Ground Gard Traveler features and components
D. Operator Jack: Where the operator inserts the wrist
cord banana plug.
E. FAIL LED: Illuminates red when either the operator or
ground are not properly grounded or connected.
F. PASS LED: Illuminates green when the operator and
ground are properly grounded and connected.
G. LO BATT LED: Illuminates yellow when the battery
power is low (2 volts).

Operation

I. Snugly fit the wristband onto your wrist and snap it to the
wrist cord.
II. Plug the wrist cord into the monitored banana jack
labeled OPR (see Figure 2).
III. Plug the ground coil cord into the monitored banana jack
labeled with the ground symbol (see Figure 2). Securely
connect the other end to a ground reference point using
the banana plug or bulldog clip.
IV. Slide the power switch to the ON position to power the
Ground Gard Traveler. Ground continuity is indicated by
a green illuminated PASS LED.
If the FAIL LED and alarm are activated, check the
connections of the wrist band, wrist cord, and ground
cord. Ensure that the ground reference is properly
grounded. If the unit continues to fail, consider
Calibration.
Made in America
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© 2008 DESCO INDUSTRIES, INC.
Employee Owned