Vermason 222635 Installation guide

DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: [phone] • E-mail: [email protected], Website: DescoEurope.com
TB-7572 Page 1 of 3 © 2018 DESCO INDUSTRIES INC
Employee Owned
Analogue Surface Resistance Test Kit
Operation and Maintenance
Description
The Vermason Analogue Surface Resistance Test Kit
is a portable battery-powered instrument designed to
measure resistance point-to-point (Rp-p) and surface to
ground (Rg). The meter is equipped with an automatic
test voltage selector. The test voltage will switch from
10 V to 100 V should the measured resistance exceed
1 x 105ohms.
ESD protected area products should be tested:
A. Prior to installation to qualify for listing in user’s ESD
control plan. Approved ESD materials (see product
 qualicationtableatEN61340-5-1Table3EPA 
requirements).
B. During initial installation.
C. For periodic checks of installed products as part of
 EN61340-5-1ComplianceVericationtestingper
EN 61340-2-3.
July 2018
Figure 1. Vermason 222635 Analogue Surface
Resistance Test Kit
Made in the
United States of America
TECHNICAL BULLETIN TB-7572
EUROPE
Compliance Verication Plan
“Acompliancevericationplanshallbeestablishedto
ensuretheorganization’sfullmentoftherequirements
of the plan. Process monitoring (measurements) shall be
conductedinaccordancewithacomplianceverication
planthatidentiesthetechnicalrequirementstobe
veried,themeasurementlimitsandthefrequencyat
whichthosevericationsshalloccur.Thecompliance
vericationplanshalldocumentthetestmethods
used for process monitoring and measurements. If the
organizationusesdi󰀨erenttestmethodstoreplace
those of this standard, the organization shall be able
to show that the results achieved correlate with the
referenced standards. Where test methods are devised
for testing items not covered in this standard, these shall
be adequately documented including corresponding
testlimits.Compliancevericationrecordsshallbe
established and maintained to provide evidence of
conformity to the technical requirements. The test
equipment selected shall be capable of making the
measurementsdenedinthecomplianceverication
plan.” (EN 61340-5-1 clause 5.2.4)
The Analogue Surface Resistance Meter and its
accessories are available as the following item numbers:
Item Description
222635 Analogue Surface Resistance Test Kit (Test
Leads and Electrodes Included)
222637 Analogue Surface Resistance Meter
222636 Shielded Test Leads
222634 Electrodes, 2.27 kg
Packaging
222635 Analogue Surface Resistance Test Kit
1 Analogue Surface Resistance Meter
1 9 V Alkaline Battery
2 Shielded Test Leads
2 2.27 kilograms Electrodes
1 Plastic Carrying Case
1 CerticateofCalibration
222637 Analogue Surface Resistance Meter
1 Analogue Surface Resistance Meter
1 9 V Alkaline Battery
1 CerticateofCalibration

DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: [phone] • E-mail: [email protected], Website: DescoEurope.com
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Employee Owned
Features and Components
D
E
B
C
A
Figure 2. Analogue Surface Resistance Meter features
and components
A. Analogue Display: Displays surface resistance
measurements from 1 x 103- 1 x 1013 ohms.
B. Resistance Property LEDs: Colour-coded LEDs that
provide quick-check resistance indicators.
C. Test Button: Hold this button down to operate the
Analogue Surface Resistance meter.
D. Low Battery LED: Illuminates when the battery
power drops to 4.0 V (±0.1 V).
E. Test Voltage Button: Test voltage will automatically
switch from 10 V to 100 V when set to AUTO. Test
voltage will stay at 10 V HOLD when set to 10 V.
Operation
“Thetestmethodsinthecompliancevericationcolumn
refer to the basic test procedure only. It is not expected
that the test method will be followed in its entirety.”
(EN 61340-5-1 EPA requirements Table 3, Note 2).
NOTE: The test kit can be used to measure Rg and Rp-p
ofstorageracks,garments,oorandtrolleyworking
surfaces using test procedures similar to working
surfaces and foot grounders.
MEASURE WORKSURFACE RESISTANCE TO
GROUND (Rg)
1. Do not clean the surface.
2. Remove all ESD sensitive items from the surface
and items that might interfere with the test.
3. Connect one lead to ground.
4. Use one electrode on the other test lead and place it
at the centre of the surface.
5. Set the Test Voltage Button to AUTO. Press and
hold the the TEST button until the measurement is
displayed (see Figure 3).
6. Perform additional measurements by placing the
electrode on the most commonly used or worn
areas.
CAUTION: If there is a current limiting resistor in the
worksurface and the worksurface resistance is lower,
the measurement will primarily be the resistance of the
resistor. It is recommended to measure Rp-p particularly
if the material colour is black.
Figure 3. Using the test leads and one 2.27 kg electrode
to measure Rg
MEASURE WORKSURFACE RESISTANCE POINT-TO-
POINT ON THE SURFACE (Rp-p)
1. Do not clean the surface.
2. Remove all ESD sensitive items from the surface
and items that might interfere with the test.
3. Use two electrodes and place them 25 cm apart on
the most frequently used area of the surface (5 cm
from any edge, 8 cm from any groundable point).
4. If the most used area of the surface is not obvious,
use two points near the centre of the surface.
5. Set the Test Voltage Button to AUTO. Press and
hold the the TEST button until the measurement is
displayed (see Figure 4).
If the measurement is outside acceptable limits, clean
the surface and re-test to determine if the cause of
failure is an insulative dirt layer or the ESD worksurface
material. NOTE: Use an ESD cleaner containing no
insulative silicone (i.e. 229021 Reztore®Antistatic
Surface and Mat Cleaner).

DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: [phone] • E-mail: [email protected], Website: DescoEurope.com
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Employee Owned
25 cm
Figure 4. Using the test leads and two 2.27 kg electrodes
to measure Rp-p of worksurfaces (place electrodes 1 m
apart for ooring)
RECOMMENDED FREQUENCY OF PERIODIC
COMPLIANCE VERIFICATION OF INSTALLED
PRODUCTS
The ESD Association lists test procedures and
troubleshooting tips in Compliance Verification ESD TR53.
NOTE: “The frequency of periodic testing is normally
specified in corporate operating procedures. …The frequency
of testing is driven by the amount of risk exposure that can
occur between tests. For example, what is the quantity of
product handled between test periods?” (See ESD Handbook
ESD TR20.20)
A GUIDE FOR PERIODIC TESTING
• Worksurface, Carts, Shelves - at least quarterly (see ESD
TR20.20 section 5.3.1.13 Periodic Tests)
• Footwear - “Incoming inspection on a lot sampling basis
should be performed for all static control footwear.” (see
ESD TR20.20 section 5.3.3.4 Testing)
• Floor - “In some cases, a simple electrical resistance
test with a megohmmeter may suffice. In others, a static
charge generation test may be required. The frequency of
testing is also a consideration. Some materials, such as
floor finishes, may require more frequent testing because
of their lack of permanency.” (see ESD TR20.20 section
5.3.4.15.1.4)
• Seating - “The recommended electrical resistance range
for seating is less than E9 ohms as tested in accordance
with ANSI/ESD STM 12.1. This value should be during
acceptance testing, installation and periodically thereafter.”
(see ESD TR20.20 section 5.3.5.3 Testing)
• Garments - “ESD TR53 describes periodic verification test
methods and trouble shooting for garments. The sleeve to
sleeve resistance test should be made to ensure proper
resistance range through the entire garment. Alternately,
the garment while worn can be tested using a wrist strap
tester.” (ESD Handbook ESD TR20.20-2008 section
5.3.13.3.1.7 Periodic Verification Testing)
Maintenance
The area surrounding the cable jacks at the top end of the
meter should be wiped with a clean cloth moistened with
alcohol to remove skin oils that will accumulate and affect the
accuracy at high resistances. The frequency of cleaning will
depend on usage; once a month would be a good starting
point.
Clean the electrodes with a minimum 70% isopropanol-water
solution. Make sure conductive pads are dry prior to use.
The Analogue Surface Resistance Meter requires little
maintenance, and there are no user serviceable parts. If
your unit requires service beyond cleaning the electrodes
or replacing the batteries, please contact Desco Europe
Customer Service.
Limited Warranty, Warranty Exclusions, Limit
of Liability and RMA Request Instructions
See the Desco Europe Warranty -
DescoEurope.com/Limited-Warranty.aspx
Specications
Resistance Ranges 1 x 103to 1 x 1013 ohms @
10 Volts, complies with IEC
61340-2-3
1 x 106to 1 x 1013 ohms @
100 Volts, complies with IEC
61340-2-3
Accuracy ±1/2 decade
Power Supply 9 V alkaline battery
Operating Temperature 41 ºF to 85 ºF (5 ºC to 30 ºC)
Environmental
Requirements
Indoor use only at altitudes
less than 6500 ft. (2 km)
Maximum relative humidity of
80% up to 85 °F (30 °C)
Meter Dimensions 4.5" x 2.8" x 2.1"
(11 cm x 7 cm x 5 cm)
Meter Weight 0.5 lbs (0.2 kg)
Carrying Case Kit
Dimensions
9.5" x 12.0" x 3.5"
(24 cm x 30 cm x 9 cm)
Carrying Case Kit
Weight
12.0 lbs (5.4 kg)
External Electrode 5 lbs (±2 oz), 2.5"
(2.27 kg [±0.06 kg], 6.35 cm)
in diameter complies with IEC
61340-2-3