Page 4 - VERMASON ESD katalógus

ESD WRISTBAND SELECTION CHART

Personnel Grounding
Vermason Wrist Single-Wire
Straps - Designed Anti-
for Europe Jewel Elastic Service Adjustable allergenic Disposable
Wristband Elastic Adjustable Engineer’s Metal Adjustable
Per EN 61340-5-2: “Where no ESD MagSnaps Wristbands Wristband Wristband Fabric Wristbands
handling precautions are taken, Wristband
a high proportion of electronic
apparatus failure can be attributed Elasticated Polyester
to ESD damage. Discharges of Band Silver fabric with Expandable Expandable with Polyester
static electricity from conductors Material impregnated conductive metal metal conductive non-woven
or charged insulators cause elastic nylon fibres on fibre on fabric
melting and evaporation of fine inside inside
tracks on integrated circuit chips. MagSnap / 4mm / 10mm 4mm /
In addition, electric fields from Coil Cord Banana Plug Stud 10mm Stud 10mm Stud 10mm Stud N/A
charged conductors and insulators
causing electrical breakdown on Closure Patented
insulation between features on Type cam-lock Friction-Grip N/A N/A Cam-lock Custom Fit
integrated circuits. This figure
could in theory be reduced to Non-
zero by adopting the precautions Other Replaceable Replaceable Improved Improved Anti- Marking,
described in EN 61340-5-1.” In Feature band blue band durability durability allergenic No Residue
Part 5.2, Scope 1.1 it is noted that Adhesive
“damage from human contact is
still the most common source even Yellow / Red Yellow / Red
in today’s automated society.” Color Black / Grey / Light Blue Black Black / Light Blue Grey
Per EN 61340-5-2 paragraph / Dark Blue / Dark Blue
5.2.7: “Wrist Strap describes the
combination of the wrist band, Part 229903 - 229700 - 229605 - 229600 -
which should fit around the Numbers 229908 229830 229625 229620 229770 229851
wrist making good skin contact,
and the wrist cord which bonds
the wearer to an earth bonding point (EBP)”; paragraph 5.2.4
states that personal grounding via a Wrist Strap to an EBP
should be used as the primary means of grounding. Dual-Wire
However, the safety of users is paramount and Wrist
Straps and other grounding devices should not be used if Jewel
there is possible exposure to electrical voltages in excess Jewel Cloth Jewel Jewel Dual Wire
of 250 V a.c. 500 V d.c. See the Ioniser section (page Dual Wire Wriststrap
37) as a means to neutralise electrostatic charges. Wristband Dual-Wire Metal Wriststrap with
Dual-Wire
MagSanp
Fulfilling paragraph 5.1.1 EN 61340-5-2, In the event an Wristbands MagSnaps with Metal Adjustable
operator comes in contact with the normal mains electricity Wristband Elastic
supplies, Wristband
a one megohm resistor is used in Vermason Wrist Straps to Woven Woven
limit the current flowing through the person to less than 0,5 mA.
Band Silveron TM fabric Expandable Fixed Metal Silveron TM fabric
In addition, other Vermason Wrist Strap safety Material infused with infused with
features conforming with EN 61340-5-2 are: monofilament metal Band monofilament
• “The ground cord should release with a force conductive fiber conductive fiber
of between 5 N and 25 N (0.51kg and 2.55
kg), preferably at the wrist band end.” Coil Cord MagSnap MagSnap 4mm / Angle 4mm / Angle
• “The outer visible surface of the wristband
should not be highly conductive (metallic).” Closure
• “The discrete resistance must be at the wrist Type Cam-lock N/A N/A Locking Clasp
end of the wrist cord” (paragraph 5.3.4). opposite buckle
• “The resistor style should be such that in the event of a Eliminates
failure of the resistor, the failure mode is to open circuit.” Other Adjustable Superior Superior exposed
Environmental Type Feature skin contact skin contact conductive
“tail” of band
Field Standard
Band Critical
Service Industrial Dark Blue
Color Dark Blue Black Onyx / Onyx
Metal X X X
Elastic X X Part 229926 - 229946 -
Numbers 229923 - 229925 229934 229954 229940 - 229942
Disposable X X (visitors)
See our products being
4 Unit C, 4th Dimension, Fourth Avenue, Letchworth, Hertfordshire, SG6 2TD, United Kingdom Made in America
on our web site:
Tel: +44 (0)1462 672005 • Fax: +44 (0)1462 670440
E-mail: Service@Vermason.co.uk • Web: Vermason.co.uk Desco.com/Factory