Trek 152P-CR-1 User Manual

Trek Model 152P-CR-1

Surface/Volume Concentric Ring Probe

Trek MODEL 152-1
Resistance Meter

Trek Model 152-1

The Trek Model 152P-CR-1 Concentric Ring Probe is capable of
measuring surface and volume resistance in materials as per IEC
or ESDA standards. A three (3) position switch on the probe selects
surface resistance or volume resistance measurements with
either a guarded or unguarded outer electrode. (See page 2.)

An optional Test Plate Set [CN 17530] consists of two separate
plates. A stainless steel conductive plate can act as a second
electrode to apply the test voltage to the sample under test and
also provides a mini-banana plug connection for a secure ground
connection. An insulative plate is utilized as needed. The use of
these plates are described in the ESD STM11.12 and in IEC 61340­2-3 standards.

The Trek Model 152-1 Resistance Meter used with the

1

system, is designed to precisely measure surface resistance on a

wide variety of conductive, dissipative, and insulative materials.

The Model 152-1 Resistance Meter employs a measurement
technique which conforms to ANSI/ESD Association standards for
measuring surface resistance, resistivity, and volume resistance
and features exceptional measurement accuracy and wide
measurement ranges of 10 to 10 ohms using either a point-to­point probe or the two-point probe. Measured resistance values
are clearly displayed on a high-contrast LCD display. Various
probes are available and accessory options include a Walking Test
Adapter which

body [STM 97.1].

allows analysis of resistance levels on the human

3 13

152P-CR-

Measurement Range

3 13

10 to 10 ohms

Probe Electrode Test
Voltage

User selectable for
10 V or 100 V, ±2%.

Test Current Limit

Limited to less than 13 mA
in the 10 V range and less
than 1.7 mA in the 100 V
range.

MODEL 152P-CR-1
Surface / Volume
Resistance Probe

A three (3) position switch
on the probe selects
performance options.

Optional Test Plate Set

These plates provide
additional ESD STM
standard options for
guarded and unguarded
resistance and volume
measurements.

Optional Probe Calibration
Fixture

Provides measurement
accuracy verification of
resistance/resistivity
probes.

Measurement and Power Solutions

www.trekinc.com

TM

Model 152-CR-1 Concentric Ring Probe and Test Plate Set

The Trek Model 152P-CR-1 Concentric Ring Probe, when
used with the Trek Model 152-1 Resistance Meter, is
capable of measuring surface and volume resistance in
materials as per IEC or ESDA standards. A three (3)
position switch on the probe selects for SURFACE
resistance measurements or VOLUME resistance
measurements either with a GUARDED or UNGUARDED
outer electrode.

In addition to the Model 152P-CR-1 Concentric Ring Probe
[CN 17529], Trek offers a Test Plate Set [CN 17530] that
consist of two separate plates, each approximately 5
inches square. A stainless steel conductive plate acts as a
second electrode for the application of the test voltage to
the sample under test. An insulative plate is utilized as
needed. The use of the plates are described in the ESD
STM11.12 and IEC 61340-2-3 standards.

Test Position SURFACE

The test voltage is applied to the outer ring during
surface measurements. Model 152P-CR-1 switch is
positioned at SURFACE designation.

Model
152P-CR-1
Resistance

Probe

Insulated Plate

Switch Position

"SURFACE"

Sample Under Test

Conductive Plate

Resistivity - Resistance X Factor 10 = Resistivity

Model 152P-CR-1 [3 Position Switch]

Outer
Ring
activated with
applied test voltage

Inner Sensing
Ring

VOLUME

(GUARDED)

SURFACE VOLUME

(UNGUARDED)

Outer
Ring

Model 152P-CR-1 Concentric

Inner Ring

Ring Probe (bottom)

Test Position VOLUME [UNGUARDED]

The test voltage is removed and outer ring is
open (unguarded) during volume measurements.
Model 152P-CR-1 switch is positioned at
VOLUME [UNGUARDED] designation. As per
ESD STM11.12 standard, the outer ring is unguarded
with no ground connection.

Conductive Test Plate [connected to the
Black /Banana Jack Test Voltage terminal
from the Model 152-1]

Model

152P-CR-1

Resistance Probe

Switch Position

VOLUME

[UNGUARDED]

Outer
Ring
open
(unguarded)
with
no ground connection

Inner
Sensing
Ring

Sample Under Test

Insulated Plate

Test Position VOLUME [GUARDED]

The outer ring is connected to common in the
152-1 meter (guarded) during volume
measurements. As per IEC 61340-2 standard,
when performing volume measurements the
outer ring is guarded
(connected to
common in the
meter).

Outer Ring
connected to
common in the
meter

Inner
Sensing
Ring

Conductive Plate
[connected to the
Black /Banana Jack
Test Voltage terminal
from the Model 152-1]

152P-CR-1

Resistance Probe

Switch Position

VOLUME

[GUARDED]

Sample Under Test

Insulated Plate

TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK

(fax) • www.trekinc.com • [e-mail] 716-438-7555 • 716-201-1804

Optional Accessories

CR Probe Calibration
Fixture [CN 16160]

This surface resistance
calibration test fixture is
designed to check the
electrode alignment of
resistance/resistivity probes,
the electrification time of the

Surface Resistance Calibration Test Fixture

probe/cable meter test setup and verify overall
measurent accuracy of the test setup at both ends of
the static dissipative measurement range. It consists
of a 502K ohm test surface and a teraohm test surface.

Test Plate Set [CN 17530]

Includes two separate plates, approx. 5” X 5”:
Stainless Steel Conductive Plate
Insulative Test Plate

All specifications are subject to change. 1202/DEC Copyright Ó 2012 TREK, INC.