EUROPE TECHNICAL BULLETIN TB-7509
AC Outlet Analyser and Wrist Strap Tester
Installation, Operation and Maintenance
Made in the
United States of America
“Wrist straps should be tested periodically. The
frequency of testing, however, is driven by the amount
of usage, wear and ESD risk exposure that can occur
between tests. For example, what is the quantity of
product handled between test periods?
Typical test programs recommend that wrist straps that
are used daily should be tested daily. However, if the
products that are being produced are of such value that
a guarantee of a continuous, reliable ground is needed
then continuous monitoring should be considered or
even required.” [CLC/TR 61340-5-2 user guide wrist
strap clause 4.7.2.4.4 test frequency]
The AC Outlet Analyser and Wrist Strap Tester is
available in the following models:
Item
Figure 1. Vermason 224713 AC Outlet Analyser and
Wrist Strap Tester
Input Voltage
Plug
224713
220VAC
UK
224715
220VAC
Europe*
*Not compatible with Swiss (type F) electrical receptacles. Contact
Customer Service for a custom quotation.
Packaging
1 AC Outlet Analyser and Wrist Strap Tester
1 Certificate of Calibration
Installation
Plug the tester into an AC outlet. The Outlet Pass LED
will illuminate green if the outlet’s wiring is correct and
the path to earth ground via the equipment grounding
conductor (green wire) is intact. The tester will alarm and
Outlet Fail LED will illuminate red if either condition is not
met.
Figure 2. Vermason 224715 AC Outlet Analyser and
Wrist Strap Tester
Description
The Vermason AC Outlet Analyser and Wrist Strap
Tester is an easy-to-use, low cost, plug-in tester. It is
designed to confirm the proper orientation of hot, neutral
and protective earth ground. The product can also be
used as a wrist strap tester per IEC 61340-5-1 clause
A.1.
Operation
1. Fit the wristband snugly onto your wrist and attach
the wrist cord to it.
2. Connect your wrist cord to the wrist strap jack
located on the face of the tester.
3. Touch and hold the metal test plate on the tester
to perform the test. The green Test Pass LED
will illuminate if the wrist strap contains adequate
current limiting resistance and continuity form
their skin to earth ground. Failure is indicated by a
non-illuminated Test LED.
The tester may also be used to check the
sleeve-to-sleeve conductive path integrity of ESD
protective garments.
DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: +44 (0) 1462 672005 • E-mail: Service@DescoEurope.com, Website: DescoEurope.com
TB-7509 Page 1 of 2
January 2018
© 2018 DESCO INDUSTRIES INC.
Employee Owned
Calibration
The AC Outlet Analyser and Wrist Strap Tester is
calibrated to NIST traceable standards. Calibration
may be performed to ensure that the tester is operating
within limits. We recommend annual calibration of our
testers.
TESTING THE WRIST STRAP TESTER
A. LOW FAIL
Connect a 675 kilohm resistor @ 5% tolerance between
the Wrist Strap Test Jack and the Test Plate. The Wrist
Strap Test LED will momentarily illuminate then turn off.
This test confirms the LOW FAIL point.
B. LOW PASS
Connect a 825 kilohm resistor @ 5% tolerance between
the Wrist Strap Test Jack and the Test Plate. The Wrist
Strap Test LED will remain illuminated until the resistor
is removed from the Test Plate. This test confirms the
LOW PASS point.
C. HIGH PASS
Connect a 32 megohm resistor @ 5% tolerance
between the Wrist Strap Test Jack and the Test Plate.
The Wrist Strap Test LED will remain illuminated unitl
the resistor is removed from the Test Plate. This test
confirms the HIGH PASS point.
Specifications
Input Voltage
220VAC ±15%
Current Drain
< 10mA
Operator Resistance
Limits (nominal)
750 kilohms - 35 megohms
Test Voltage, Open
Circuit
27VDC (nominal)
Long Term Drift
< 0.1% / decade
Dimensions
5.1cm x 7.6cm x 5.1cm
(Item 224713)
5.0cm x 10.1cm x 4.1cm
(Item 224715)
Operating Temperature
0° to 40°C
Limited Warranty, Warranty Exclusions, Limit of
Liability and RMA Request Instructions
See the Desco Europe Warranty DescoEurope.com/Limited-Warranty.aspx
D. HIGH FAIL
Connect a 40 megohm resistor @ 5% tolerance
between the Wrist Strap Test Jack and the Test Plate.
The Wrist Strap Test LED should not illuminate. This
test confirms the HIGH FAIL point.
TESTING THE AC OUTLET ANALYSER
NOTE: The following procedure should only be done by
someone familiar with voltage hazards. This procedure
will work for 220VAC as long as the neutral and ground
are referenced. 220VAC produced with out of phase
110VAC-Ground-110VAC will produce a FAIL result.
Isolate the ground plug from the tester by inserting it
into a 3 to 2 plug adapter.
A. PASS OUTLET
Connect a 5 kilohm resistor @ 5% tolerance between
the supply ground and tester ground. The PASS
LED should remain illuminated until the resistor is
removed. This test confirms the PASS point for the
neutral-to-ground resistance.
B. FAIL OUTLET
Connect a 12.5 kilohm resistor @ 5% tolerance
between the supply ground and tester ground. The
FAIL LED should remain illuminated until the resistor
is removed. This test confirms the FAIL point for the
neutral-to-ground resistance.
DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: +44 (0) 1462 672005 • E-mail: Service@DescoEurope.com, Website: DescoEurope.com
TB-7509 Page 2 of 2
© 2018 DESCO INDUSTRIES INC.
Employee Owned
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