VSP841 / VSP842 – Passive Vacuum Sensor

Absolute Pressure 1000…100 mbar to 1 x 10-3 mbar, 750…75 Torr to 1 x 10-3 Torr The VSP841 and VSP842 Pirani half bridges measure absolute pressure in the fine vacuum range. The robust heat conduction sensor is compact, pre-adjusted and temperature compensated. It is suitable for controlled and passive bridge circuits and as sensor for monitoring of vacuum isolations, readout of measurements with VD84. Benefits

• Economical Pirani sensor
• Good long time stability
• Durable sensor, elastic helix filament
• Filament protected from condensing solvents by a metal screen
• Sensor pre-adjusted
• Extremely small sensor volume
• Screwable, electric connector
• Proposal for evaluation circuit available on request

Typical Applications

• Monitoring of vacuum insulations
• Appliances with integrated electronics for regulation and evaluation
• Apparatus engineering
• Chemical process engineering
• Analysis instruments
• Freeze drying
• Concentrators