Many contamination test protocols typically require a working temperature range between -20°C and +80°C. The TQCM offers an easy way to cover this range without the need for liquid or gas cooling loops inside your vacuum chamber.
The TQCM uses a solid state thermoelectric device (heat pump) in the sensor to control temperature with a ΔT of ±70°C. By mounting the sensor heat sink to a thermally conductive bracket inside your vacuum chamber, waste heat can be dissipated to outside ambient air through the chamber wall without the need for a cooling loop.
To achieve the minimum low end temperature range of -59°C, active cooling is needed to provide adequate heat sinking for waste heat dissipation.
|Temperature range||-59°C – 100°C|
|Temperature control||Thermoelectric cooling and heating (±70°C range)|
|Temperature measurement uncertainty||±0.5°C|
|Mass sensitivity||1.96 × 10-9 g/cm2 Hz|
|Crystal frequency||15, 16, or 16.8 MHz|
|Frequency measurement uncertainty||±1 Hz|
|Mass||0.51 lb (230 g)|
|Sensor field of view angle||140°|
|Sensor aperture diameter||0.250”|