Specificati**: Useful Measuring Range:1 mTorr to 1000 Torr, or 1 x 10^-3 to 1000 mbar N2 equivalentAmbient Temperature Range, Controller, Operating:+4 degrees Celsius to +50 degrees CelsiusAmbient Temperature Compensation Range, Gauge Tube:+15 degrees Celsius to +50 degrees CelsiusAmbient Non-Operating Gauge Tube Bakeout Temperature:+150 degrees Celsius max.Recorder Output Voltage:0 to 9 volts, +/-5%, +/-.05 Volts, non-linear, monotonically increasing with pressureRecorder Output Source Imp