KEYCOM provides solutions in the 300 GHz to 1 μHz frequency range (SHF/EHF/MW/UHF/VHF/ULF).
We undertake designing, manufacturing and measuring. Please feel free to contact us.

Capacitance Method:
Dielectric Constant and Dielectric Loss Tangent Measurement System(Dk/Df)
for Flat Plate, Liquid, Gel, Ultra-Thin Film, Thin-film Compounds

Model No. DPS17
High accurate measurement! Customizing for measurement requests (correspondence to high temperature) is available.

This model is a system to measure relative permittivity and dielectric loss tangent
for flat plates, liquid, and gel (measurement temperature can be changed with a jig).
It has an interface for external control by CPU.
In addition to measurement in room temperature, it is capable of automatic measurement with a temperature change,
which usually takes a long time.


*Windows PC is required.
*Thermostat chamber is required for temperature above or below room temperature.

ASTM D-150, JIS C2101, JIS C2141, JIS K6911 JIS C 2111 28.1.2 (Bmethod) etc. Compliant.
(Please specify your required standard(s) so that an applicable jig would be introduced.

Conforming Standards (Example)

ASTM D-150, JIS C2101, JIS C2141, JIS K6911, JIS C 2111 28.1.2 (B method)etc.
👉Please specify the standard. We will introduce you the compatible jigs.

Electric Field Direction

Sample thickness direction [In the case of sheets and films]


Specifications

Items Details
Measurement frequency 1μHz ~ 10MHz (varies depending on LCR meters)
Range and accuracy of measurement

Dielectric constant (εr') : 1.05-1000 
Precision(repeatability) : ±1% or ±0.01(It depends on LCR meter. The rate is measured by the LCR meter shown as in the example below.)
Precision + accuracy(to true value) : ±3%(It depends on measurement theory and structure of jig)

Dielectric loss tangent (tanδ) : 0.0003-10@1MHz
Precision(repeatability) : ±2%(It depends on LCR meter. The rate is whene measured by the LCR meter shown as in the example below.)
Precision+accuracy(to true value) : ±3%(It depends on measurement theory and structure of jig. The rate is measured by DPT-2141)

*Example of LCR meter:

Basic measurement accuracy 0.05%
AC amplitude voltage 5mV-2Vrms
DC bias voltage ±40V
Impedance measurement range 1mΩ-100MΩ
Capacitance measurement range 1pF-0.01F

Measurement temperature
(using a supported jig)
10 K ~ 300˚C
*Please contact us for detalis.
*KEYCOM provides cryostats for temperatures as low as 10 K, using its know-how on cryogenic temperature products.
Measurement degree of vacuum
(using a supported jig)
10^-1Pa~10^-3Pa
*Please contact us for detalis.
* Measurement is performed automatically.

Specification

Name Description Sample size/quantity Electrode Component No.
Capacitance meter(main unit) For 20Hz-2MHz      
We will make other proposals according to your request.      
Electrode for measurement Electrode for flat plate(normal temperature) 80mmφor more   DPT-008
Electrode for flat plate(normal temperature) 30mmφ or more   DPT-009
Electrode for flat plate(-40~200℃) 30mmφ or more   DPT-009-200
Electrode for flat plate(-70~300℃) 30mmφ or more   DPT-009-300
Electrode for gel 5ml or more   DPT-009-OPJE
Electrode for liquid,gel(normal temperature) 5ml or more   DPT-009-JE
Electrode for liquid and gel(-40~200℃) 5ml or more   DPT-009-JE-200
Electrode for liquid(JIS C2101) 30ml or more(Actual usage: 10ml)   DPT-C2101
Electrode for liquid(JIS C2101)(-40~200℃) 30ml or more(Actual usage: 10ml)   DPT-C2101-200
Electrode for flat plate(JIS C 2141) 50mm x 50mm Required DPT-2141
Electrode for flat plate(JIS C 2141)(-40~200℃) 50mm x 50mm Required DPT-2141-200
Electrode for flat plate(JIS C 2141)(-70~300℃) 50mm x 50mm Required DPT-2141-300
Electrode for film 50mm x 50mm Required DPT-0092141
Electrode for film(-40~200℃) 50mm x 50mm Required  DPT-0092141-200
Electrode for film(-70~300℃) 50mm x 50mm Required DPT-0092141-300
Electrode for flat plate(JIS C6481)   Required DPT-6481
Guard ring (JIS C 6481/ Copper laminate with a thickness of more than 0.5 mm to less than 0.8 mm)     DPT-6481-G
Guard ring (JIS C 6481/ Copper laminate with a thickness of more than 0.8 mm to less than 1.2 mm)     DPT-6481-G
We will make other proposals according to your request.      
Standard sample for measurement(with data) Conforming to JIS C 6481(Copper laminate with a thickness of more than 0.5 mm to less than 0.8 mm)     DPS17-C6481
Conforming to JIS C 6481(Copper laminate with a thickness of more than 0.8 mm to less than 1.2 mm)     DPS17-C6481
We will make other proposals according to your request.      
Permittivity analysis program Datas can be processed by MS Excel     DMP-002040705-05
GPIB-USB Used to connect a computer and measuring instrument.     GP-01
PC Windows PC
Thermostatic chamber Please let us know your preference. We will propose according to your request.      
Controlling program for thermostatic chamber       DMP-x
Vacuum chambers and vacuum pumps If you wish to remove the influence of water molecules, please let us know your requirements such as degree of vacuum. We will make a proposal according to your request.     DMP-x

Test example

*The computer calculates measurement results and prints out a graph as shown above.
Numerical values are stored in a file, which can be processed using Excel or other data formats.


Appearance of Electrode for measurement

 Model No.  Appearance  Size
DPT-009
DPT-009-FI
DPT-009-OPJE
 φ80mm x 180mm
 DPT-2101  
DPT-2141
DPT-0092141
 122(W) x 122(D) x 137(H)mm
 Standard sample attached for DPT-2141  50 x 50mm