TB-3060
Page 5 of 5
© 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
Limited Warranty, Warranty Exclusions, Limit
of Liability and RMA Request Instructions
See the Desco Warranty -
Desco.com/Limited-Warranty.aspx
Calibration
Frequency of recalibration should be based on the critical
nature of those ESD sensitive items handled and the risk of
failure for the ESD protective equipment and materials. In
general, Desco recommends that calibration be performed
annually.
Use the Desco
98221
Wave Distortion Monitor Verification
Tester to perform periodic verification (once every 6-12
months) of the Full-Time Continuous Monitor. The verification
tester can be used to check the test limits of the Full-Time
Continuous Monitor without removing it from the workstation.
See
TB-3074
for more information.
Figure 7. Desco
98221
Wave Distortion Monitor
Verification Tester
Specifications
Input Voltage and
Frequency
100-120VAC, 50/60 Hz
Operating Temperature
50 to 95°F (10 to 35°C)
Environmental
Requirements
Indoor use only at altitudes less
than 6500 ft. (2 km)
Maximum relative humidity
of 80% up to 85°F (30°C)
decreasing linearly to 50% @
85°F (30°C)
Dimensions
4.38" L x 3.25" W x 0.89" H
(111 mm x 83 mm x 23 mm)
Weight
0.26 lbs. (0.12 kg)
Operator Test Range*
500 kilohms to 10 megohms
impedance
Worksurface Test Limit** 10 megohms (±10%)
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 have a conductive layer such
as Dual Layer Rubber or Dissipative 3-Layer Vinyl with
conductive buried layers. Desco workstation monitors are not
recommended for use with homogeneous matting.
