Product info

Liquid nitrogen cooled (cryogenic) 4ch analysis system

Analysis system that uses liquid nitrogen to cool the temperature control
Compatible with ASTM E 1559 compliant tests (Standards of American Society for Testing and Materials)
Liquid nitrogen cooled (cryogenic) 4ch analysis system JAXA COSMODE

Features

These products are analytical systems compatible with ASTM E 1559 compliant tests (Standards of American Society for Testing and Materials), and are utilized for space materials evaluations.
  • Measurements can be made at extremely low temperatures (-196℃ to +125℃) and high vacuum (10-4Pa or less) suitable for space environments.
  • The desorption gas emitted from the sample can be measured with high accuracy with up to four sensor modules .
Measurement is possible without gasifying the measurement sample.
  • Without destroying the sample, it is possible to collect it as it is.
  • No sample size restrictions provides outgas measurement withthe final product state.
No sample size restrictions provides outgas measurement withthe final product state.
※The photo shows the sample loading in a small vacuum chamber.
Frequency fluctuations due to temperature changes can be cancelled with high accuracy and accurate measurements can be made.
  • Even if the temperature is varied from -190℃ to +125℃, the difference between the detection electrode and the standard electrode is within ±6ppm of the actual force.
Frequency temperature characteristics of modules
  • ・ Frequency fluctuation of each electrode is 800 ppm or more.
  • ・ Within ±6ppm by taking the difference
  • ・ Effect of temperature fluctuation 1/100 or less
The characteristic difference of the sensor module is small, and the syetem probvides high accuracy measurement.
  • Variations in desorption of the outgas adsorbed to the four sensor modules at the time of temperature rise are within ±1.5℃.
QTGA test results of silicone rubber (RTV-S691)
silicone rubber
silicone rubber (RTV-S691)
Crystal part of the sensor can be replaced.
The crystal part of the sensor contaminated at outgas measurement must be replaced because it is a consumable part.
  • Customers can make the replacemen easily.
Crystal part of the sensor can be replaced.
Replacement crystal
※On the other company's outgas sensors for QTGA method, customers can not replace crystal sensor and have to change sensor module into new one.
Running cost reduction for approx. 1/10
Crystal part of the sensor can be replaced.
How to replace the crystal

System configuration

Systems examples of compatible with ASTM E 1559 compliant tests
System configuration

Compact high vacuum evaluation system is available More details

Application software
"Twin-QCM Real Time Monitor" is dedicated application software to handle the Twin-QCM sensing unit and to monitor, to analyze data.

  Main functions

  • Measurement and monitoring of frequency changes in QCM Sensor Modules
  • Measurement and monitoring of temperature changes in QCM Sensor Modules
  • Storage function of measured frequency and temperature data in csv format
  • Analysis functions such as measuring the frequency deviation of acquired frequency data and superimposing waveforms
  • Frequency stability monitoring by Allan ANALYSIS METHOD
  • Analysis of desorption rates and thermal correlations of contaminants by ER (Evaporation Rate) Charts
  • Monitoring the status of Twin-QCM Sensing unit
  • Editing of temperature control program and writing to temperature controller (built-in Twin-QCM Sensing unit)
  • Determination of CQCM/TQCM and automatic switching of temperature control system

Application software
Twin-QCM Real Time Monitor Screen example

Specification

Twin-CQCM Sensor Module PSA-QM-1001
Frequency 10.278MHz(Fundamental wave) /30.833MHz(The 3rd. overtone)
Mass sensitivity 2.39x108 (Hz/g)㎠(Fundamental wave)
7.17x108 (Hz/g)㎠(The 3rd. overtone)
Operating temperature range -196 ～ +125℃
Temperature characteristics ±10ppm
（against +25℃ (-80℃ to +80℃)
Dimensions Φ35.0x23.3(H)mm
Electrode area:12.57㎟
Weight ≦100g
Heater power ≦6W
Measurement viewing angle 20° (Harf Angle)
Twin-QCM Sensing unit(4ch) PSA-QS-1001
Number of control channels 1 ～ 4
Frequency detection accuracy ≦1ppm
Frequency resolution 0.01Hz
Operating temperature range +10 ～ 40℃
Power supply voltage AC100V ～ AC240V(50/60Hz)
Dimensions 437(W) x 132(H) x 499(D) mm(Except protrusions)
Weight ≦10kg
*The power supply voltage may be limited depending on the country or region where the product is used.
External appearance of Twin-CQCM Sensor Module (unit:mm)
External appearance of Twin-CQCM Sensor Module
External appearance of Twin-QCM Sensing unit(4ch) (unit:mm)
External appearance of Twin-QCM Sensing unit(4ch)
ASTM E 1559(Standards of American Society for Testing and Materials)
ASTM is a standard established by the American Society of Testing Materials (now ASTM International), the world's largest standardization body. It is a test method recommended by the National Aeronautics and Space Administration (NASA) and Japan Aerospace Exploration Agency（JAXA）.
ASTM E 1559 is a real-time test (out-gas rate measurement test) to measure the amount that adorobed on QCMs (Quartz Crystal Microbalance: quartz resonators) in which the outgasses emitted from the materials are kept at a constant temperature.
Outgas rate measuring device conceptual diagram
Outgas rate measuring device conceptual diagram
(Provided by JAXA)
【Test method example】QCM sensor: 3 units used
Sensor 1co: Cool to -183℃ or less
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