Desco 19258 Installation, Operation And Maintenance Manual Download Page 3

TB-3072

 Page 3 of 6

© 2018 DESCO INDUSTRIES INC

Employee Owned

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

Features and Components

A. Power Jack:

 Connect the included 24VDC power 

adapter here.

B. Operator LEDs:

 Illuminates green when the 

operator is properly grounded. Illuminates solid red and 

audible alarm sounds when the operator is not properly 

grounded.

C. Worksurface LEDs:

 Illuminates green when the 

worksurface is properly grounded. Illuminates red and 

audible alarm sounds when the worksurface is not 

properly grounded.

D. Park Snap:

 Allows the operator to disconnect (and 

park) a wrist strap when leaving the workstation, without 

creating a false alarm. Touch the park snap and the 

monitor's audible alarm will disable for approximately 10 

seconds. Use this time to disconnect the wrist cord from 

the wristband, and attach it to the park snap or remove 

the banana plug from the jack. Upon returning to the 

workstation and disconnecting the wrist cord from the 

park snap, the operator has approximately 10 seconds 

to reconnect the wrist cord to a worn wristband before 

activating the alarm.

E.  Monitored Operator Jack:

 Insert the single-wire 

wrist cord here to monitor the operator's connection to 

ground.

F.  Threaded 10mm Ground Snap:

 Connects the 

worksurface mat to electrical ground.

G. Threaded 10mm Worksurface Monitor Snap:

 

Verifies that the worksurface's path-to-ground is <500 

megohms.

A

D

B

C

E

F

G

Figure 4. Mini Monitor features and components

Summary of Contents for 19258

Page 1: ...he continuous or constant monitor The test voltage creates a sine wave that the monitor circuit compares to established patterns By monitoring the distortions or shape of the sine 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 fa...

Page 2: ...ashers 2 Flat Head Screw 6 32 x 1 4 1 Power Adapter 24VDC North America Plug 1 Certificate of Calibration 19243 Mini Monitor Universal Power Adapter 1 Mini Monitor 2 Countersunk Washers 2 Flat Head Screw 6 32 x 1 4 1 10mm Interchangeable Park Snap 1 10mm Operator Jack Adapter 1 Power Adapter 24VDC IEC Inlet 1 Certificate of Calibration Figure 2 North American power adapter included with the 19239 ...

Page 3: ...park a wrist strap when leaving the workstation without creating a false alarm Touch the park snap and the monitor s audible alarm will disable for approximately 10 seconds Use this time to disconnect the wrist cord from the wristband and attach it to the park snap or remove the banana plug from the jack Upon returning to the workstation and disconnecting the wrist cord from the park snap the oper...

Page 4: ...ark snap and 10mm banana jack adapter for operators who use wrist cords with 10mm terminations Use the park snaps knurled rims to unscrew the 4mm park snap from the monitor and install the 10mm park snap to the monitor Plug the 10mm operator jack adapter into the monitor s operator jack Installation 1 Remove the Mini Monitor from the carton and inspect for damage 2 Locate an appropriate AC outlet ...

Page 5: ... 2 Snap the wrist cord to the wristband 3 Plug the wrist cord into the operator jack The green operator LED will illuminate This indicates that the operator is properly grounded 4 If this does not happen examine the wrist cord for continuity or damage and the wristband to ensure that it fits securely If you have dry skin apply an approved dissipative hand lotion such as Menda Reztore ESD Hand Loti...

Page 6: ... megohms 20 Operator Test Voltage 1 2V peak to peak 1 2µA open circuit Worksurface Test Voltage 5 to 7 5V open circuit Alarm Response Time 50 ms Country of Origin United States of America This cannot be verified with standard DC test equipment The continuous monitor is an impedance sensing device and the limits are determined by the magnitude and angle of the impedance The worksurface mat must hav...

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