690A Baratron® Heated, High Accuracy Absolute Capacitance Manometer
(0.1-1000 Torr), Temperature Controlled to 45°C
Direct, Absolute, Analog Pressure/Vacuum Measurement
The Baratron® 690A is designed for high accuracy pressure measurements with single-ended dual electrode/AC bridge instrumentation that is extremely stable and designed to minimize the effect of temperature changes. The 690A operates at an internal temperature of 45°C. By incorporating temperature control into the head, the accuracy is improved to as high as 0.05% of reading.