Twin-TQCM Sensor

A Versatile Sensor with Easy-to-Use Thermoelectric Control

The Twin-TQCM is a Peltier-controlled QCM sensor capable of temperature control from -80°C to +125°C without liquid nitrogen.
It compensates for temperature fluctuations using two quartz crystals—one for measurement and one as a reference—enabling stable detection of mass changes.
Combined with 1-channel or 4-channel controllers, it supports flexible system configurations tailored to specific purposes.

Features

Peltier cooling/heating control (liquid nitrogen not required)

Highly stable measurement enabled by a dual-channel configuration (measurement/reference)

Compliant with ASTM E1559/E2900 testing standards

Time Characteristics of Cooling Response

The Twin-TQCM rapidly achieves a stable low-temperature state shortly after cooling begins. By adjusting the heat dissipation conditions, rapid cooling to temperatures below -80°C is possible. By changing the temperature of the sensor module mounting section (heat dissipation surface), measurement across a wide temperature range is achievable.

Customization Options

Customization options such as the following are available depending on your application and installation conditions.

Expanding outgas capture range by adjusting the angle of the cover opening

Modifying the module structure to suit chamber conditions

Changing cable length and connection connectors

Modifying software analysis functions and control specifications

【 Customization Examples 】

Specification

Twin-TQCM Sensor Module	PSA-QM-1002
Output Frequency	10.278MHz(Fundamental) /30.833MHz(3ot)
Mass Sensitivity	2.39x10⁸ (Hz/g)cm²(Fundamental) 7.17x10⁸ (Hz/g)cm²(3ot)
Frequency Sensitivity	0.53ng/Hz　(Fundamental) 0.18ng/Hz　(3ot)
Sensor Electrode Area	0.1257 cm²（Per Electrode）
Temperature Sensor	Platinum Resitance Pt1000　Class F0.3
Operating Temperature Range	-80 to +125℃
Differential Frequency Temperature Characteristic	Within ±10 ppm +25℃ Standard (-80℃ to +80℃)
External Dimensions	Φ35.0x23.3(H)mm（Excluding Protrusions）
Weight	≦50g
Peltier Power	≦9W
Peltier Cooling Performance	⊿T≧55℃(Base Fixing Temperature-20℃)
Oscillation Circuit Power	≦0.5W
Measurement Viewing Angle	20° (Harf Angle)