Desco 50005 Installation and operating instructions

Employee Owned

Concentric Ring Probe

Installation, Operation and Maintenance

June 2013

Resistivity and Resistance

Per ANSI/ESD STM11.11 section 12.0 “CONVERSION TO

RESISTIVITY, When it is appropriate to convert a resistance

obtained by this test method to an equivalent resistivity in

ohms per square, multiply the resistance measurements

obtained by this method by ten. The conversion factor of ten

is derived from the geometry of the electrode assembly.

NOTE: Conversions to resistivity may not be valid for

materials that are laminated, plated or metallized with

conductive materials. This fact should be understood

when users of this test procedure are required to satisfy

specifications given in “ohms/square.”

Repeatability

Per ANSI/ESD STM11.11 section 4.0 “REPEATABILITY,

This test method has been shown to have a repeatability

of approximately one half order of magnitude” in controlled

environments.

Packaging

1 Concentric Ring Probe

1 BNC / Banana Jack Adapter

Operation

1. Connect the Concentric Ring Probe to a resistance

meter using the included BNC / banana jack adapter and

the meter’s test leads.

2. Place the material to be tested on an insulative surface.

3. Place the Concentric Ring Probe on top of the material

to be tested.

4. Take a resistance measurement using the resistance

meter.

TECHNICAL BULLETIN TB-3063

Made in the

United Kingdom

Item Description

19787 Digital Surface Resistance Meter Kit

19788 Digital Surface Resistance Meter

19784 Analog Surface Resistance Meter Kit

19786 Analog Surface Resistance Meter

19640 Surface Resistance Checker

Figure 1. Desco 50005 Concentric Ring Probe

Description

The Desco

50005

Concentric Ring Probe is an instrument to

be used in conjunction with a resistance meter, such as the

Desco 19787 Digital Surface Resistance Meter, to measure

surface resistance per ANSI/ESD STM11.11 the test method

listed in Packaging standard ANSI/ESD S541 for surface

resistance of planar materials.

The Concentric Ring Probe (Ref: ANSI/ESD STM11.12) can

measure the volume resistance of planar materials using a

flat conductive metal plate (not included).

The Concentric Ring Probe may be used for the resistance

measurements of ESD packaging including static shielding

and other bags.

The Desco Concentric Ring Probe is compatible with the

following Desco Surface Resistance Meters:

www. .com information@itm.com1.800.561.8187

Employee Owned

Figure 4. Using the Concentric Ring Probe with the

Desco Surface Resistance Checker

Specifications

Weight 5.8 lbs (2.6 kg)

Dimensions 2.8" diameter x 6.5" height

(7.1 cm diameter x 16.5 cm height)

(with BNC / banana jack adapter)

Outer Probe Diameter 2.5" (63 mm)

Inner Probe Diameter 1.2" (30 mm)

Insulation Resistance

Between Probes >1 x 1012 ohms @ 500V

Probe Resistance of

Carbon Pads <100 ohms at low test voltage

Figure 3. Using the Concentric Ring Probe with the

Desco Analog Surface Resistance Meter

Figure 2. Using the Concentric Ring Probe with the

Desco Digital Surface Resistance Meter

www. .com information@itm.com1.800.561.8187

Employee Owned

Limited Warranty

Desco expressly warrants that for a period of one (1) year from the date of purchase Desco Concentric Ring Probes will be free of defects in material

(parts) and workmanship (labor). Within the warranty period, a credit for purchase of replacement Desco Concentric Ring Probes, or, at Desco’s option,

the Concentric Ring Probe will be repaired or replaced free of charge. If product credit is issued, the amount will be calculated by multiplying the unused

portion of the expected one year life times the original unit purchase price. Please include a copy of your original packing slip, invoice, or other proof of

date of purchase. Any unit under warranty should be shipped prepaid to the Desco factory. Warranty replacements will take approximately two weeks.

If your unit is out of warranty, call our Customer Service Department for a Return Material Authorization (RMA) and proper shipping instructions and

address. Desco will quote repair charges necessary to bring your unit up to factory standards.

Warranty Exclusions

THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF ALL OTHER PRODUCT WARRANTIES, EXPRESSED AND IMPLIED, INCLUDING

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED. The express warranty will not apply to

defects or damage due to accidents, neglect, misuse, alterations, operator error, or failure to properly maintain, clean or repair products.

Limit of Liability

In no event will Desco or any seller be responsible or liable for any injury, loss or damage, direct or consequential, arising out of the use of or the inability

to use the product. Before using, users shall determine the suitability of the product for their intended use, and users assume all risk and liability

whatsoever in connection therewith.