ADCMT 12704A User manual
©2009 ADC CORPORATION First printing March 31, 2009
All rights reserved. Printed in Japan
12704A
Resistivity Chamber
OPERATION MANUAL
Manual Number FOE-00000046B00
C-1*
12704A Resistivity Chamber Operation Manual
Table of Contents
1. Introduction..................................................................................................1-1
1.1. Product Overview ......................................................................................................................... 1-2
1.2. Before Using the Product ............................................................................................................. 1-3
2. Part Descriptions ..........................................................................................2-1
2.1 Rear Panel..................................................................................................................................... 2-2
2.2 Electrode Section.......................................................................................................................... 2-3
3. Measurement Method ..................................................................................3-1
3.1 Connecting to the Measuring Instruments.................................................................................... 3-2
3.1.1 Connecting with the 8340A .................................................................................................. 3-3
3.1.2 Connecting with the 8240 ..................................................................................................... 3-4
3.1.3 Connecting with the 8252 ..................................................................................................... 3-4
3.1.4 Connecting with the 5450/5451 ............................................................................................ 3-5
3.2 Setting the Electrodes and a Sample............................................................................................. 3-6
3.3 Measurement ................................................................................................................................ 3-7
3.3.1 Calculating Volume and Surface Resistivities. ..................................................................... 3-7
3.3.2 General Instructions .............................................................................................................. 3-8
4. Specifications ...............................................................................................4-1
Appendix ...........................................................................................................A-1
A.1 How to Calculate Volume and Surface Resistivities ................................................................... A-2
A.2 Internal Connections for Volume/Surface Resistivity Measurements ......................................... A-3
A.3 Internal Connections.................................................................................................................... A-4
1-1
12704A Resistivity Chamber Operation Manual
1. Introduction
Chapter 1
Introduction
1-2
12704A Resistivity Chamber Operation Manual
1.1 Product Overview
1. Introduction
1.1 Product Overview
The 12704A resistivity chamber is a shield box that is used to measure the volume resistivity
and surface resistivity of sheet, cloth and filmy samples together with a digital electrometer, a
digital ultra-high resistance/micro current meter, or other measuring instruments.
Features:
The electrodes comply with JIS-K6911.
All the electrodes adopt conductive rubber for higher sample adhesion.
Easy sample attachment and detachment.
Volume and surface resistivity measurements can be switched by pressing the button
switch.
The following functions are included for easy measurement:
(1) Voltage application to the electrodes stops when the cover is opened.
(2) A contact signal according to opening and closing of the cover is outputted to a
measuring instrument.
1-3
12704A Resistivity Chamber Operation Manual
1.2 Before Using the Product
1.2 Before Using the Product
(1) Appearance and Accessory Inspection
When receiving the 12704A, perform the following inspection:
Inspect the 12704A for any damage or defect in appearance.
Check that the electrode protection sheet is inserted between the electrodes.
If there is any damage in appearance or absence of the accessory, please contact ADC Corpora-
tion or your sales representative.
Table 1-1 Supplied Accessory List
Name Model Quantity Remarks
Electrode protection sheet MPX-F0955A 1 For protection when not in use
Operation Manual E12704A 1
Note: Quote the model name of the accessory when ordering
(2) Optional Accessory
The 12704A optional accessories are listed below. Specify the part number when ordering.
Table 1-2 Optional Accessory List
Name Model Quantity Remarks
Replacement rubber elec-
trode
CC050001 1 For main, guard or opposed elec-
trode
(3) Operating Environment
Use the 12704A in an area free from dust, corrosive gas and vibrations and away from di-
rect sunlight. The ambient temperature should be 0°C to + 60°C, the relative humidity
should be 80% or less.
Items to be checked
1-4
12704A Resistivity Chamber Operation Manual
1.2 Before Using the Product
The storage temperature range is from -5°C to +60°C. When not in use for a long time, in-
sert the electrode protection sheet between the electrodes, cover the 12704A with a plastic
sheet or put in a cardboard box, and store it in a low humidity area away from direct sun-
light.
When transporting the 12704A, insert the electrode protection sheet and pack with the
packaging materials used at delivery. If the packaging materials have been lost, pack the
12704A by using the following procedure:
a) Wrap the 12704A with a plastic sheet.
b) Put it in a cardboard box (with thickness of 5 mm or more) and protect it with cush-
ioning materials.
c) Fix the outside with packing tape.
2-1
12704A Resistivity Chamber Operation Manual
2. Part Descriptions
Chapter 2
Part Descriptions
2-2
12704A Resistivity Chamber Operation Manual
2.1 Rear Panel
2. Part Descriptions
2.1 Rear Panel
See Figure 2-1 "Rear Panel."
1. INPUT connector
A connector to connect with a measuring instrument having a triaxial connector on the
INPUT such as the 8340A, 8240, 8252 or 5450/5451.
The center contact is connected to the main electrode.
2. V SOURCE terminal
A connector to connect with the voltage output terminal of the 8340A, 8252 or 5450/5451.
While the HI connection is switched between the guard electrode and the opposed elec-
trode by the RESISTIVITY switch, the LO is always connected to the chassis. The HI
connection is disconnected when the cover is opened, and is connected to the guard elec-
trode or opposed electrode when it is closed.
If a cable is disconnected with voltage being applied from a voltage source, voltage
generation will occur on the end of the cable. Be sure to set the voltage OFF or
STANDBY before disconnecting the cable.
3. LID SIGNAL connector
Outputs an opening/closing signal of the cover. When the cover is closed, the terminals are
short-circuited. When it is closed, the terminals are open-circuited.
4. GND terminal
A grounding terminal. It is connected to the chassis of the 12704A.
Ground this terminal for electric shock prevention.
Figure 2-1 Rear Panel
WARNING
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