1. Working with the world 1st. twin sensor.

Detecting outgas and substance identification with high accuracy

By utilizing NDK's all knowledge of crystal technology and collaborating with JAXA (Japan Aerospace Exploration Agency), new QTGA (QCM Thermogravimetric Analysis)sensor system debuts!

Quartz crystal sensor captures outgas, measures the total amounts, and analyzer can identify the type of adsorped substance.

Outgas Sensor“Twin CQCM & TQCM”(Cryogenic and Thermoelectric QCM sensors for QTGA)

When a substance is adsorbed on the electrode of QCM sensor, frequency shifts to lower side equivalent for mass amount. This is called as “Mass load effect.”

Twin sensor can cancel the influence of measurement environment.

QCM method “ASTM E 1559” outlineTwin sensing(Unique technology)

NIHON DEMPA KOGYO CO., LTD.

(ASTM E 1559 Method compliance)

*QCM=Quartz Crystal Microbalance

The twin sensor has two electrodes, a reaction electrode and a reference electrode on one crystal blank. This enables users to always get real detection amount with twin sensor as differential output frequency, without any influence of measurement environment (See chart below).

2. Accurate temperature measurementTemperature can be measured more accurately by mounting a thermal sensor on Twin sensor.

4. Running cost savingUser friendly design enables to reduct running cost. You can replace inside crystal chip by yourself.

3. More data acquisition by oscillating 2 frequencies(Fundamental & 3rd overtone)

You will be released from stressful measurements originating from dispersion between sensors!

Provided by JAXA

Keep stable differential frequency

Temperature shiftVibration noise

Frequency(Hz)

Time

Det-Ref

DetRef

QCM Controller

QCM1

QCM2 QCM3

Sample（Ex.125℃）Heatup Cell

NIHON DEMPA KOGYO CO., LTD.

Outgas Sensor”Twin -CQCM”(Cryogenic QCM sensor for QTGA)

Products

Usage example QTGA characteristics

Specifications

Twin-CQCM sensor module CQCM sensor(inside)

Twin-QCM sensing unit(working with both CQCM & TQCM)

Twin-CQCM sensor module PSA-QM-1001

Twin-QCM sensing unit PSA-QS-1001Control channel numberFrequency detection accuracyFrequency resolutionOperation temperature rangePower supply voltageDimensions Weight

Output frequencies

Mass sensitivity

Operating temperature range

Temp. characteristics

Dimensions

Weight

1 to 4≦0.1ppm≦0.01Hz

+10 to +40℃AC100V to AC240V*

440(W）x132(H)x500（D）mm≦10kg

10.278MHz(Fund.)/30.833MHz(3rd overtone)

-196 to +125℃

≦100g

2.39×108 (Hz/g)cm2 (Fundamental)7.17×108 (Hz/g)cm2 (3rd overtone)

±10ppmcompared to +25℃(-80℃ to +80℃)

Φ35.0x23.3(H)mm＊Electrode area:12.57mm2

RefDet

Thermal sensor

℃℃

℃

Effusion cell

≦ 10-4Pa≧ -196℃ (Cooling with LN2)

Vacuum chamber equipment Twin-QCM sensing unit

Application software for measurementTwin-CQCMsensor modules

Sample ofcontaminant

・Measurement of oscillation frequency・Temperature monitor of each module・Control of heater built in each module

USB：Measurement and control

PC (option)

Outgases

Freq

uenc

y Va

riatio

n (H

z)Fr

eque

ncy

Varia

tion

(Hz)

* The power supply voltage range to be used may be limited depending on the country of use and region.

Outgas Sensor”Twin-TQCM”(Thermoelectric QCM sensor for QTGA)

Products

Usage example Cooling characteristics

Specifications

NIHON DEMPA KOGYO CO., LTD.For more information, Contact us at: 6th floor Merkmal Keio Sasazuka Bldg., 1-47-1, Sasazuka Shibuya-ku, Tokyo 151-8569, JAPAN

TEL:+81-3-5453-6736 FAX:+81-3-5453-6740 E-Mail: bio-m@ndk.com Web: http://www.ndk.com

Twin-TQCM sensor module

Twin-QCM sensing unit(working with both CQCM & TQCM)

Now onsale!

Twin-TQCM sensor module PSA-QM-1002

Twin-QCM sensing unit PSA-QS-1002Control channel numberFrequency detection accuracyFrequency resolutionOperation temperature rangePower supply voltageDimensions Weight

Output frequencies

Mass sensitivity

Operating temperature range

Output frequencyTemp. characteristics

Dimensions

Weight

1≦0.1ppm≦0.01Hz

+10 to +40℃AC100V to AC240V*

440(W）x132(H)x500（D）mm≦10kg

10.278MHz(Fund.)/30.833MHz(3rd overtone)

-80 to +125℃

≦50g

2.39×108 (Hz/g)cm2 (Fundamental)7.17×108 (Hz/g)cm2 (3rd overtone)

±10ppmcompared to +25℃(-80℃ to +80℃)

Φ35.0x23.3(H)mm＊Electrode area:12.57mm2

* The power supply voltage range to be used may be limited depending on the country of use and region.

Effusion cell

Vacuum pressure:10－4Pa Twin-QCM sensing unit

Application software for measurement

Twin-TQCMsensor module

Sample ofcontaminant

・Measurement of oscillation frequency・Temperature monitor of each module・Control of heater built in each module

USB：Measurement and control

PC (option)

Outgases

Coolant circulation

－40.0

－40.0 －30.0 －20.0 －10.0 0.0 10.0 20.0 30.0 40.0

－50.0

－60.0

－70.0

－80.0

－90.0

－100.0

Cooling characteristics

Temperature of mounting position (℃)

Sensor temperature (℃)

0 1 2 3 4 5－100

－80

－60

－40

－20

0

20

40

Cooling time characteristics

Time (min.)

25℃

-20℃

Temperature of mounting position

Sensor temperature (℃)

Cold plate Cold chiller