Specifications - Desco Mini Monitor Installation Operation & Maintenance

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 Mini Monitor. The verification
tester can be used to check the test limits of the Mini
Monitor without removing it from the workstation.
See TB-3074 for more information.
Figure 11. Desco 98221 Wave Distortion Monitor
Verification Tester
TB-3098 Page 5 of 6
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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
U.S. Patent No.
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.
ANSI/ESD S20.20 requires the use of a surface
resistance meter for periodic verification of a
worksurface's resistance-to-ground (Rtg). Constant
monitors may not be used as a substitute for this
requirement.
AC/DC Power Adapter
Power Input:
100-240 VAC, 50/60 Hz
Power Output:
9 VDC
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)
2.49" Dia. x 0.84" H
(63 mm Dia. x 21 mm H)
1.6 oz. (44 g)
500 kilohms to 10 megohms
impedance
10 megohms (±20%)
1.2 V peak-to-peak @ 1.2 µA,
open circuit
5 to 7.5 V, open circuit
<50 ms
Pending
United States of America
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