SCS SRMETER2 Installation, Operation And Maintenance Manual Download Page 3

TB-9000

 Page 3 of 4

© 2018 DESCO INDUSTRIES INC

Employee Owned

SCS 

- 926 JR Industrial Drive, Sanford, NC 27332

East: (919) 718-0000 | West: (909) 627-9634 • Website: 

StaticControl.com

USING THE OPTIONAL TEST LEADS AND ONE OR 

TWO 5 POUND ELECTRODES
General Guidelines

Use both 5-pound electrodes for Resistance 

Point-to-Point (Rtt) measurements. 
Use one 5-pound electrode, and connect one test 

lead to ground for Resistance-to-Ground (Rtg) 

measurements. 
Ensure that the item being measured is electrically 

isolated (placed on an insulative surface). The checker 

will measure the lowest resistance path. 
Minimize crossing the test leads when possible.
When using 5-pound electrodes:

•  Place them no closer than 2” from the edge of the 

surface being measured.

•  Place them no closer than 3” to any groundable 

point.

•  Place them about 10” apart from each other for Rtt 

measurements of a worksurface.

•  Place them about 3’ apart from each other for Rtt 

measurement of a floor.

Preferable electrode placements include:

•  Most commonly used area of a surface

•  Most worn area

•  Center of surface

•  Furthest area from a grounded point 
If the surface to be measured has sections (i.e. floor 

tiles, garment panels), place the 5-pound electrodes on 

different sections for Rtt measurements. 
Clean the material’s surface for test lab measurements, 

but do not clean the surface for materials that are 

already installed. Only clean and re-test the installed 

material if failure occurs. 

Frequency of Compliance Verification Testing

NOTE: “The frequency of periodic testing is normally 

specified in corporate operating procedures. …The 

frequency of testing is driven by the amount of risk 

exposure that can occur between tests. For, example, 

what is the quantity of product handled between test 

periods?” (See ESD Handbook ESD TR20.20)  
Per ANNEX A of Compliance Verification ESD TR53 

“Test Frequency, The objective of the periodic test 

procedures listed in this document is to identify if 

significant changes in ESD equipment and materials 

performance have occurred over time. Test frequency 

limits are not listed in this document, as each user will 

need to develop their own set of test frequencies based 

on the critical nature of those ESD sensitive items 

handled and the risk of failure for the ESD protective 

equipment and materials.”
Additional information includes: 

•  Worksurface

 - at least quarterly (see ESD TR20.20 

section 5.3.1.13 Periodic Tests) 

•  Footwear

 - “Incoming inspection on a lot sampling 

basis should be performed for all static control 

footwear.” (see ESD TR20.20 section 5.3.3.4 

Testing) 

•  Floor

 - “The types of monitoring and type 

of equipment are considerations. In some 

cases, a simple electrical resistance test with a 

megohmmeter may suffice. In others, a static 

charge generation test may be required.” (see ESD 

TR20.20 section 5.3.4.13 Performance Monitoring) 

•  Seating

 - “The recommended electrical resistance 

range for seating is less than 1 x 10

9

 ohms as 

tested in accordance with ANSI/ESD STM 12.1. 

This value should be during acceptance testing, 

installation and periodically thereafter.” (see ESD 

TR20.20 section 5.3.5.3 Testing) 

•  Garments

 - “To maintain process control, it is 

imperative that the garment be tested per ANSI/ESD 

STM 2.1. The point-to-point and sleeve-to-sleeve 

resistance test should be made.”  (see ESD 

TR20.20 section 5.3.13.3.1.8 Periodic Testing)

Reviews: