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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
98220
Distortion Monitors to perform periodic verification (once
every 6-12 months) of the Mini Monitor. The Calibration
Unit can be used to check the test limits of the Mini
Monitor without removing it from the workstation.
See
TB-2082
for more information.
Figure 6. Desco 98220 Calibration Unit for Wave
Distortion Monitors
TB-3072 Page 4 of 4
Calibration Unit for Wave
Specifications
Input Voltage and
Frequency
(External Adapter)
Operating Temperature 50 to 95°F (10 to 35°C)
Environmental
Requirements
Dimensions
Weight
Operator Test Range*
Worksurface Test
Limit**
Operator Test Voltage
Worksurface Test
Voltage
Alarm Response Time
Country of Origin
*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.
AC/DC Power Adapter
Power Input:
100-240VAC, 50/60 Hz
Power Output:
24VDC @ 150mA
Cable Length:
5 ft. (1.5 m)
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)
2.77" L x 2.08" W x .90" H
(70 mm x 53 mm x 23 mm)
0.1 lbs. (0.05 kg)
500 kilohms to 10 megohms
impedance
500 megohms (±20%)
1.2V peak-to-peak @ 1.2µA,
open circuit
5 to 7.5V, open circuit
<50 ms
United States of America
© 2017 DESCO INDUSTRIES, INC.
Employee Owned
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