TECHNICAL BULLETIN TB-3086 Full-Time Continuous Monitor Made in the Installation, Operation and Maintenance United States of America Wave Distortion Technology is the Most Reliable Technology for the Continuous Monitoring of Single-Wire (Conductor) Wrist Straps Wave Distortion or vector impedance works by applying a continuous test voltage of 1.2 volts peak-to-peak at 1 to 2 microamperes (0.000002 amperes) to the wrist strap that is connected to the continuous or constant monitor. The test voltage creates a square wave that the monitor circuit compares to established patterns. By monitoring the distortions, or shape of the square wave, Wave Distortion Technology determines if the monitored circuit is complete - the operator is in the circuit and the total equivalent DC resistance is within specifications. Wave Distortion Technology produces a very fast alarm time and minimal false alarms. 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 Figure 1. Desco Full-Time Continuous Monitor monitoring used. Per ESD Handbook ESD TR 20.20 section 5.3.2.4.4 Typical Test programs recommend Description that wrist straps that are used daily should be tested daily. However, if the products that are being produced The Desco Full-Time Continuous Monitor is a single are of such value that knowledge of a continuous, workstation continuous monitor. It continuously monitors reliable ground is needed, and then continuous the wiring of an AC outlet, path-to-ground integrity monitoring should be considered or even required. of one operator, and the ground plane of one ESD worksurface. Mounting tabs make it suitable to install The Full-Time Continuous Monitor and its accessories in workbench or equipment settings. The embedded are available as the following item numbers: relay terminal activates when a pass condition is displayed on the monitor and can be connected to Item Description machines for access control or other devices. Connect 19321 Full-Time Continuous Monitor, with North the 19323 Power Relay accessory to control power to America Power Cord workbenches, hand tools, and other electronic devices dependent on the Full-Time Continuous Monitor s 19322 Full-Time Continuous Monitor, with UK Power status. Cord The Full-Time Continuous Monitor is designed 19323 Power Relay, North America with Wave Distortion Technology to provide stable 19327 Power Cord, North America continuous monitoring of the path-to-ground and 19328 Power Cord, UK presence of 1 megohm resistance of an operators wrist strap. Audio and visual alarms activate (in less than 98221 Wave Distortion Monitor Verification Tester 500 milliseconds) when the operator unintentionally disconnects from the monitor or the wrist strap connection points are intermittent. The Full-Time Continuous Monitor also monitors for a worksurface path-to-ground of less than 10 megohms and the integrity of the electrical ground used to by the monitor All Full-Time Continuous Monitors are calibrated to NIST standards and include a certificate. DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 (909) 627-8178 DESCO EAST - One Colgate Way, Canton, MA 02021-1407 (781) 821-8370 Website: Desco.com 2021 DESCO INDUSTRIES INC TB-3086 Page 1 of 8 December 2021 Employee OwnedPackaging 19321 Full-Time Continuous Monitor 1 Full-Time Continuous Monitor 1 Mat Monitor Cord (White) 1 Countersunk Washer 1 Flat Head Screw, 6-32 x 1/4 2 Pan-Head Screws, 6 x 3/8 1 Dual Lock Fastener Set, 2 Length 1 Power Cord with North American Plug 1 Certificate of Calibration 19322 Full-Time Continuous Monitor 1 Full-Time Continuous Monitor 1 Mat Monitor Cord (White) 1 Countersunk Washer 1 Flat Head Screw, 6-32 x 1/4 Figure 2. Desco 19321 Full-Time Continuous Monitor 2 Pan-Head Screws, 6 x 3/8 packaging contents 1 Dual Lock Fastener Set, 2 Length 1 10mm Interchangeable Park Snap 1 10mm Operator Jack Adapter 1 Power Cord with UK Plug 1 Certificate of Calibration 19323 Remote Alarm 1 Power Relay 1 Interface Cable 1 Power Cord with North American Plug Figure 3. Desco 19322 Full-Time Continuous Monitor packaging contents Figure 4. Desco 19323 Power Relay packaging contents DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 (909) 627-8178 DESCO EAST - One Colgate Way, Canton, MA 02021-1407 (781) 821-8370 Website: Desco.com 2021 DESCO INDUSTRIES INC TB-3086 Page 2 of 8 Employee Owned