Desco Europe Charleswater 99093 Installation, Operation And Maintenance

Dual Operator Continuous Monitor
Installation, Operation and Maintenance
Figure 1. Charleswater
Monitor with Satellites

Description

Leading companies use continuous monitors as a
cost effective component in satisfying the clause 5.2.4
Compliance Verification Plan requirements of EN61340-5-1.
The Charleswater Dual Operator Continuous Monitor with
Satellites continuously monitors the grounding integrity of two
operators, and two ESD working surfaces path to ground.
The monitor will provide instantaneous notification of static
control equipment failures, and eliminates the need of costly
and difficult to supervise wrist strap logging record keeping.
This unit is highly cost effective as it is designed to monitor
any conventional single-wire wrist strap and ground cord
system.
The Charleswater Dual Operator Continuous Monitor is
available in the following models:
Item Power
Adapter Input
99093 220 VAC
99095 220 VAC
The Dual Operator Continuous Monitor with Satellites is an
impedance sensing device designed to monitor body types
from a 5th percentile female to a 95th percentile male. This
range covers a 5 feet (152 cm) tall 90 pound (41 kg) person
to a 6 foor 5 inch (196 cm) 250 pound (113 kg) person in
any production environment.* The monitor is powered by a
220 VAC, 60/50 Hz, plug-in transformer which also provides
connection to ground.
No user adjustment required: The Continuous Monitor
is drift-free and designed to be insensitive to the effects of
squeezing or stretching the coiled cord. It requires no user
adjustment.
PPE-5101.E Page 1 of 5 July 2018
TECHNICAL BULLETIN PPE-5101.E
99093 Dual Operator Continuous
Wrist Strap
Snap Size
4 mm
10 mm
DESCO EUROPE - 2A DUNHAMS LANE, LETCHWORTH, HERTFORDSHIRE, SG6 1BE, UK
Phone: +44 (0) 1462 672005 • E-mail: Service@DescoEurope.com, Website:
The Dual Operator Workstation Continuous Monitor is a
real time instrument that ensures that critical ESD control
components in a sensitive area are effectively grounded. It
independently monitors the operator and the worksurface.
The instant an operators wrist strap or cord fails, the monitor
will issue audible and visual alarms alerting the user of the
problem. In the same manner, the unit also confirms that
a path to ground of less than 10 megohms (1 x 10
exists from the ESD protective worksurface(s).
ADVANTAGES OF CONTINUOUS MONITORING
OVER PERIODIC TESTING
Many customers are eliminating periodic touch testing of
wrist straps and are utilising 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 wrist strap failures after ESD
susceptible products have been manufactured. The costs
of dealing with the resulting catastrophic failures or latent
defects can be considerable. Dual Operator Workstation
Continuous Monitors eliminate the need for users to test wrist
straps and log the results. Per CLC/TR 61340-5-2 Clause
B.1.3 Constant monitors: "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."
WAVE DISTORTION DETECTION TECHNOLOGY
PROVIDES TRUE 100% CONTINUOUS MONITORING
From the technical alternatives available, Desco Europe
designs and manufactures many of its Continuous Monitor
product offerings using wave distortion technology. 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 Workstation
Continuous Monitor will reliably determine if the circuit is
complete.
*NASA Publication 1024-Anthropomorphic Source Book Volume 1:
"Anthropometry for Designers"
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7 ohms)
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