TB-9094
Page 7 of 7
© 2019 DESCO INDUSTRIES INC
Employee Owned
SCS
- 926 JR Industrial Drive, Sanford, NC 27332
East: (919) 718-0000 | West: (909) 627-9634 • Website:
StaticControl.com
Specifications
Dual Combination Tester
Input Voltage and
Frequency
(External Adapter)
AC/DC Power Adapter
Power Input:
100-240 VAC, 50/60 Hz
Power Output:
12 VDC, 0.5 A
Cable Length:
6 ft. (1.83 m)
Operating Temperature 70 to 85 °F (21 to 30 °C) for 1
gigohm test limit
41 to 85 °F (5 to 30 °C) for all
other test limits
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)
Maximum relative humidity of
50 % at 1 gigohm setting
Dimensions
(with mounting plate)
11.35" x 7.75" x 1.47"
(288 mm x 197 mm x 37 mm)
Weight
(with mounting plate)
1.2 lbs (0.5 kg)
Test Accuracy
±20 % for 1 gigohm footwear
test limit
±10 % for all other test limits
Test Switch Voltage
5 VDC @ open circuit
Wrist Strap and
Footwear Test Voltage
30 VDC @ open circuit
Test current is limited by
resistors and varies on
the test range setting (100
kilohms - 1 gigohm)
Relay Contact Rating
1 A @ 30 VDC max
Dual Foot Plate
Dimensions
13.25" x 15.25" x 1.125"
(337 mm x 387 mm x 29 mm)
Weight
5.5 lbs (2.5 kg)
Maintenance
To maintain optimum performance, cleaning should be
performed on a regular basis. Use a minimum of 80 %
Isopropyl alcohol to clean the foot plate and test switch.
Other cleaners are susceptible to leaving residue on
these surfaces.
Calibration
The Dual Combination Tester is calibrated to standards
traceable to NIST. 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, we
recommend that calibration be performed annually.
The accuracy of the Dual Combination Tester is
specified as:
±20 % for 1 gigohm footwear test limit
±10 % for all other test limits
A periodic check using a precision resistance box can
be used to verify proper operation.
The SCS
770751
Limit Comparator is available for the
convenient calibration of the Dual Combination Tester.
The Limit Comparator allows the customer to perform
NIST traceable calibration on the Dual Combination
Tester. The Limit Comparator can be used on the
shop floor within a few minutes, virtually eliminating
downtime, verifying that the Dual Combination Tester is
operating within tolerances.
See
TB-9070
for more information.
Figure 12. SCS 770751 Limit Comparator
Limited Warranty, Warranty Exclusions, Limit
of Liability and RMA Request Instructions
See the SCS Warranty -
StaticControl.com/Limited-Warranty.aspx