User Manual

All specifications are subject to change. 1202/DEC Copyright Ó 2012 TREK, INC.
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.
Model 152-CR-1 Concentric Ring Probe and Test Plate Set
Inner Ring
Outer
Ring
Model 152P-CR-1 Concentric
Ring Probe (bottom)
Outer
Ring
activated with
applied test voltage
Inner Sensing
Ring
VOLUME
(GUARDED)
SURFACE VOLUME
(UNGUARDED)
Model 152P-CR-1 [3 Position Switch]
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
Switch Position
"SURFACE"
Sample Under Test
Conductive Plate
Insulated Plate
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.
Outer
Ring
open
(unguarded)
with
no ground connection
Inner
Sensing
Ring
Model
152P-CR-1
Resistance Probe
Switch Position
VOLUME
[UNGUARDED]
Sample Under Test
Insulated Plate
Conductive Test Plate [connected to the
Black /Banana Jack Test Voltage terminal
from the Model 152-1]
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
152P-CR-1
Resistance Probe
Switch Position
VOLUME
[GUARDED]
Sample Under Test
Conductive Plate
[connected to the
Black /Banana Jack
Test Voltage terminal
from the Model 152-1]
Insulated Plate
Optional Accessories
TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK
(fax) • www.trekinc.com • [e-mail] 716-438-7555 • 716-201-1804
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
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
Surface Resistance Calibration Test Fixture
Resistivity - Resistance X Factor 10 = Resistivity