TCD Filament (includes seal)

Hotwires
Made of gold-sheathed tungsten, rhenium-tungsten, nickel and nickel alloy. Each provides specific performance characteristics such as corrosion resistance, oxidation resistance, catalytic reactions and sensitivity for use under different application conditions. 

Thermistors

• Buck Scientific thermistor detector elements utilize the same mounts as hotwires.
• A thermistor is a thermally sensitive resistor having a high negative co-efficient of resistance.
• Thermistors have relatively low operating temperatures, and should not be used in hydrogen atmospheres.
• They have high sensitivity at low temperatures and can be used at sub-ambient temperatures.

filaments are tested before shipment. Most filaments are tested and matched in helium but can be matched in other gases on special request.