Vermason 222605 Operation, Installation And Maintenance Instructions

Multi-Mount Continuous Monitor
Operation, Installation, and Maintenance
Figure 1. Vermason's Multi-Mount
Continuous Monitor
Description
Leading companies use continuous
monitors as a cost effective component
in satisfying some of the audit and check
requirements of EN 61340-5-1.
Wrist strap testing "Where continuous
monitoring is used, no additional testing
is required." [EN 61340-4-1, per A.5.2]
"The wrist band will normally be worn for
several hours at a time so it needs to be
comfortable while making good contact
with the skin. It is a good idea to check
the wrist strap every time it is applied.
Constant on line monitors can be used
so that any breaks will be immediately
found." [EN 61340-5-2 section 5.2.7]
"The main advantage to a constant
monitor is the immediate indication that
the employee receives if the wrist strap
falls open. With an unmonitored system,
the employee will not be aware of a wrist
strap failure until the start of the next
shift. This has reliability benefits for an
ESD program as it might help reduce or
eliminate ESD damage.
There are also other process benefits
from using constant monitors such as the
elimination of the need to maintain daily
test logs and a reduction in the time for
employees to make the daily test. For
units that also monitor the connection of
a work surface to protective earth, it is
also possible to reduce or eliminate the
checking of the work surface as part of
the periodic audit of the process." [CLC/
TR 61340-5-2:2008 User guide Annex
B.1.3 Constant monitors]
Phone: 0044 (0) 1462 672005, Fax: 0044 (0) 1462 670440 • e-mail: Service@Vermason.co.uk, Internet:
TB-7576 October 2011 Page 1 of 3
TECHNICAL BULLETIN TB-7576
The Vermason Multi-Mount Continuous
Monitor continuously monitors the
integrity of one operator and one working
surface. This monitor will provide
virtually instantaneous notification
of static control equipment failures,
eliminating the need of periodic testing
and costly record keeping. This unit is
highly cost effective as it is designed
to monitor any conventional single wire
wrist strap and ground cord system.
Its small package and mounting tabs
with holes make it highly suitable to
install on most any equipment or work
bench surface. In addition, optional
mounting is available using the provided
adhesive-backed Velcro ® strips. Using
either mounting method makes the
Multi-Mount Monitor suitable for most
any machinery or workbench even in
hard to reach locations.
The Vermason Multi-Mount Continuous
Monitor is available in one model:
Model
222605
The Multi-Mount Continuous Monitor
is a real time instrument that ensures
that critical ESD generators in a ESD
protected are effectively grounded.
The instant an operator's wrist strap or
working surface fails, the monitor will
issue audible and visual (LEDs) alarms
alerting the user and supervisor of the
problem.
The Parking Snap features provides a
means for the operator to disconnect
wrist strap cord when normally leaving
work area without audible alarm
sounding. It also provides a means of
wrist strap storage.
ADVANTAGES OF CONTINUOUS
MONITORING OVER PERIODIC
TESTING
Many customers are eliminating periodic
testing and are utilizing continuous
monitoring to better ensure that their
products were manufactured in an
ESD protected environment. Full time
continuous monitoring is superior to
periodic or pulsed testing, and can
save a significant amount of money
in testing costs and rejected product.
Periodic testing detects failures after
ESD susceptible products have been
manufactured. The costs of dealing
UNIT C, 4TH DIMENSION, FOURTH AVENUE, LETCHWORTH, HERTS, SG6 2TD UK
Voltage AC Calibration
220 NIST
United States of America
with the resulting catastrophic or
latent defects can be considerable.
Multi-Mount Continuous Monitors
eliminate the need for users to test
wrist straps and log the results; by their
function, these monitors satisfy the ISO
9000 and EN 61340-5-1 test logging.
WAVE DISTORTION DETECTION
TECHNOLOGY PROVIDES TRUE 100%
CONTINUOUS MONITORING
From all the technical alternatives
available, Vermason has chosen wave
distortion technology for many of its
Continuous Monitor product offerings.
Wave distortion circuitry monitors
current/voltage phase shifts and provides
true 100% continuous monitoring.
Electrical current will lead voltage at
various points due to the combinations of
resistance and capacitive reactance. By
monitoring these "distortions" or phase
shifts, the wave distortion Multi-Mount
Continuous Monitor will reliably
determine if the circuit is complete.
Wave distortion technology can
be referred to "vector impedance
monitoring". This description is valid as
the wave distortion technology measures
the impedance at the monitored banana
jack and looks for changes in either
the capacitance or resistance of the
circuit which includes the wrist strap
and its wearer. It uses filtering and
time domain sampling to filter out false
signals caused by voltage offsets, 60 Hz
fields and other electro-magnetic and
electrostatic interference.
In normal factory environments, and
with persons whose capacitance with
respect to ground is within design limits
(5 feet tall 90 pound person to 6 foot 5
inch 250 pound person), the Multi-Mount
Continuous Monitor cannot be "fooled".
It will provide a reliable alarm only when
the wrist strap becomes dysfunctional or
unsafe according to accepted industry
standards. The Multi-Mount Continuous
Monitor is drift-free and designed to be
insensitive to the effects of squeezing or
stretching the coil cord.
ADVANTAGES OF WAVE
DISTORTION AND SINGLE-WIRE
TECHNOLOGY
The Vermason Multi-Mount Continuous
Monitor allows the use of any standard,
single-wire wrist strap and coiled cord.
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