Desco 19665 Installation, Operation And Maintenance

Dual-Wire Dual Operator Monitor
Installation, Operation and Maintenance
Figure 1. Desco Dual-Wire Dual Operator Monitor
Description
The Desco 19665 Dual-Wire Dual Operator Monitor
monitors two operators and two ESD worksurfaces
eliminating the need for periodic testing and
record keeping of wrist straps. The Dual-Wire Dual
Operator Monitor uses low-voltage steady state DC
continuous-loop technology to continuously monitor
(versus pulsed or intermittent) dual-wire wrist strap
functionality. Independent audio and visual alarm
conditions make it easy to identify the status of the
worksurfaces and operators. Two operator remotes
with 10 foot cables are included for use at adjacent
workstations. Each monitor is calibrated with accepted
procedures and standards traceable to the National
Institute of Standards and Technology (NIST) and
includes a NIST certificate.
ANSI/ESD S20.20 section 7.3 states "Compliance
verification records shall be established and maintained
to provide evidence of conformity to the technical
requirements." Per ANSI/ESD S1.1 Annex A.3 Daily
(wrist strap system) testing may be omitted if constant
monitoring used." Per ESD Handbook ESD TR 20.20
section 5.3.2.4.4 "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, and then continuous
monitoring should be considered or even required."
TB-3019 Page 1 of 5 March 2019
TECHNICAL BULLETIN TB-3019
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website:
The Dual-Wire Dual Operator Monitor and its
accessories are available in the following item numbers:
Item Description
19665 Dual-Wire Dual Operator Monitor
50524 Limit Comparator
50525 Replacement Operator Remote Kit, Black
50526 Replacement Operator Remote Kit, White
19262 Replacement Power Adapter, 12 VDC
Packaging
1 Dual-Wire Dual Operator Monitor
1 Power Adapter, 12VDC, with interchangeable plugs
(North America, UK/Asia, Europe)
2 Operator Remotes with Attached Cables
(1 Black, 1 White)
2 Mat Monitor Cords (1 Black, 1 White)
2 Mat Ground Cords
1 Monitor Ground Cord
1 Universal Snap Kit
1 Certificate of Calibration
Made in the
United States of America
Desco.com
© 2019 DESCO INDUSTRIES INC
Employee Owned