Dual Operator Workstation Continuous Monitor with
Satellites - Operation, Installation and Maintenance
Tech Brief
PS-2119
April 2007 Page 1 of 4
Description
Leading companies use continuous
monitors as a cost effective component
in satisfying the paragraph 6.1.3
Compliance Verification Plan
requirements of ANSI/ESD S20.20. The
ESD Systems.com Dual Operator
Continuous Monitor with Satellites
continuously monitors the grounding
integrity of two operators, and two ESD
worksurfaces' 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.
Per ESD Handbook TR 20.20 paragraph
5.3.2.4.4 Test Frequency, "Because wrist
straps have a finite life, it is important
to develop a test frequency that will
guarantee integrity of the system.
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 knowledge of a continuous,
reliable ground is needed, then
continuous monitoring should be
considered or even required."
The Dual Operator Continuous Monitor
with Satellites is available in two
models.
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
foot tall 90 pound person to a 6 foot 5
inch 250 pound person in any produc-
tion environment.* The 41222 is
powered by a 120 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 coil cord.
It requires no user adjustment.
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 work surface. The instant an
operator's 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 10E7 ohms)
exists from the ESD protective work
surface(s).
ADVANTAGES OF CONTINUOUS
MONITORING OVER PERIODIC
TESTING
Many customers are eliminating
periodic touch testing of wrist straps
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
Figure 1. ESD Systems.com Dual Operator Continuous Monitor with Satellites
Position Satellite Remote Monitor where most convenient for operator.
Position Monitor Control Unit for optimal supervisor visibility.
ESD Systems.com • 432 Northboro Road Central • Marlboro, MA 01752 • (508) 485-7390 • Fax (508) 480-0257 • Web Site: ESDSystems.com
© 2007 DESCO INDUSTRIES INC.
Employee Owned
Made in America
*NASA Publication 1024-Anthropomorphic
Source Book Volume 1: “Anthropometry for
Designers”
** Per ANSI/ESD S20.20 paragraph 6.0.3.
Tailoring "This document, or portions thereof,
may not apply to all applications. Tailoring is
accomplished by evaluating the applicability of
each requirement for the specific application.
Upon completion of the evaluation, requirements
may be added, modified or deleted. Tailoring
decisions, including rationale, shall be
documented in the ESD Control Program Plan."
Model
Voltage AC
41222
120 Volt
41223
220 Volt
