Surface Resistance Test Kit
Operation and Maintenance
Tech Brief
PS-2111
September 2007 Page 1 of 7
Made in America
Description
The Surface Resistance Test Kit is a
portable, accurate, and versatile
instrument designed to measure
resistance between two points (RTT),
surface to ground (RTG), and surface
resistivity in accordance with ESD
Association Standard S4.1 including:
• Resistance measuring accuracy ± 10%
(E11 and greater ±20%)
• Resistance range <1.0 x 10E3 ohms
to >10E12 ohms
• Open circuit voltages of 10 and 100
volts ± 5%
• Electrification period of 15 seconds
• Electrodes (two) 5 pounds ± 2 oz with
50-70 durometer conductive pads
In addition, the Meter measures ambient
temperature and relative humidity.
The Surface Resistance Test Kit (or its
Meter) is referenced and designed to be
used to make measurements in
accordance with the test methods in:
• Worksurfaces - ANSI/ESD S4.1
Worksurfaces Compliance
Verification - ESD TR53 - Resistance
Measurements
• Floors - ANSI/ESD S7.1- Resistive
Characterization of Materials Floor
Materials
• Footwear - ESD S9.1 - Footwear -
Resistive Characterization
• Garments - ESD STM2.1 Garments
• Seating - ESD STM12.1- Seating -
Resistive Measurement
• Floor/Footwear - ESD STM97.1 -
Floor Materials and Footwear-
Resistance Measurement in
Combination with a Person
• Workstations - ESD-ADV53.1 - ESD
Protective Workstations
Versatility:
Measures RTT, RTG or Resistivity
(requires optional Resistivity
Attachment, item 41292)
•
Quick Checks -
Surface resistance
exponent number illuminates
immediately i.e. 8 = 10E8 ohms or
100,000,000 ohms
•
Periodic Checks of Installed
Products -
Surface resistance
exponent number illuminates
immediately and displays
Temperature and Relative Humidity
during 15 second electrification
period making numerous measure-
ments and calculations to then display
mantissa i.e. if LED displays 8 and
LCD displaying 7.14 as mantissa =
7.14 x 10E8 ohms or 714,000,000
ohms
•
Test Lab Evaluation of Product -
Display same as Periodic Check
above
The Surface Resistance Test Kit is NIST
calibrated and items available are:
Inspection
Remove the meter from the carton and
inspect for damage. Each Surface
Resistance Test Kit should include the
following:
1 Protective carrying case
1 Meter
2 Test
leads
2 5-pound
electrodes
2 AA alkaline
batteries
Properly store the Meter and component
assemblies when not in use.
Figure 1. Item 41290 Surface Resistance Test Kit
© 2007 DESCO INDUSTRIES INC.
Employee Owned
Model
Description
41290
Surface Resistance Test Kit
41291
Meter & Attachment
41292
Resistivity Attachment
