• TCD 3000 GC- OEM is a unique gas detector, based on the principle of thermal conductivity allows a precise analysis with a very low detection limit.
   
• The unique in-house developed TDC MEMS (Micromechanical thermal conductivity sensor) allows GC measurements without a reference channel. Based on decades of experience, this NASA-proved gas detector is able to distinguish between carrier gas and analyte and mathematically process the measurement without the need of a reference gas signal. The worldwide matchless sensitivity detection limit is up to 0.5 ppm.
   
• The connection to the PLC is realized by a RS-485 interface. An exceptionally small chip size makes the detector suitable for various GC applications. A rapid start-up is provided due to the fast heating up of the sensor at the start. The output can be set as V/(m-K), or W/(m-K). The retention time, height and area of the peaks allow conclusions to be drawn about the analyte.

Benefits:

• Fast: t90 < 0.5 s
• Miniature: W=56mm, H=36mm, D=30mm;
• High stability < 100 ppm per week*
• High sensitivity: <0.5 ppm a week*
• Easy to use

Application:

• Precise analysis of thermal conductivity of probe
• Very low noise < 1 ppm*
• Very High Dynamic Range: 10⁶
• Concentration: 20 ppm to 100% level
• Single Filament
• Detection limits < 1 ppm*

*All data refer to 0.5 vol% H₂ in N₂

Communication:

• Control and signal reading via RS-485
• TTL 3.3 V

Construction:

• Dimensions without tubes ( W x H x D in mm): (46 x 20 x 26)
• M10 thread inside
• Tubes on request
• Protection class: IP00
• The product TCD3000GC-OEM does not meet EMC requirements itself. Therefore, proper shielding and housing has to be performed by customer.