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)

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