See Product Details

The convection gauge is the lowest cost instrument that can provide a continuous monitoring and control of your vacuum system from atmosphere all the way down to 1 mTorr. The gauge tube is all stainless steel and is very rugged and reliable. The standard gauge tube has both 1/8 inch NPT and 1/2 inch O.D. smooth tubulation for sealing in compression ports. Optional flanges include NW and Conflat® and are described in the ordering information section below.

• View Detailed Datasheet

Temperature Compensated

An internal temperature compensator virtually eliminates the errors due to ambient temperature changes that are so troublesome with other convection gauges.

Safe With Mercury and Fluorine

Mercury and Fluorine vapors are no problem for the Vacuum Research convection gauge. Our filament is a platinum alloy which operates below 100 oC and all other gauge tube components exposed to vacuum are 300 series stainless steel. For outdoor applications, or for corrosive environments, gauge tubes are also available with stainless steel connector pins.

Nitrogen, Argon and Other Gases

The convection gauge can be provided to read directly for argon or other gases. But, if your system uses a variety of gases, or if accuracy between 2 Torr and 800 Torr is critical in your process, then the Vacuum Research Wide Range Diaphragm Manometer instruments may be a better selection.

Features:

• Wide Range; 1 mTorr to Atmosphere
• 5 VDC Analog Output for Computer Interface
• 1/4 DIN Bench or Panel Mount Enclosure
• Two Set Points with 3 Amp Relays Optional
• Single Sensor Covers Entire Range
• Under 1 Second Response to Rising Pressure
• All Cables and Mounting Hardware Included
• Extension Cables Available up to 500 Feet

Specifications:

• Range of Measurement: 1 milliTorr to Atmosphere.
• Sensor Type: Thermal convection.
• Resolution: ± 2 milliTorr from 1 to 25 milliTorr; or 2% of meter full scale.
• Response Time: Less than 1 second for 90% of an increase in pressure, less than 4 secs. for a decrease in pressure from atmosphere to 1 mTorr.
• Hysteresis: Minimum hysteresis is less than 2 mTorr from 1 to 25 mTorr and less than 2% of full scale to atmosphere. To prevent relay chatter hysteresis is adjustable to as high as 5% of full scale.
• Maximum Pressure without Calibration Change: 2300 Torr (30 PSIG)
• Maximum Gauge Tube Temperature: 100 °C (212 °F) maximum bake out of gauge tubes in air or vacuum. Automatic compensation 0 to 35°C.
• Display: Precision analog meter.
• Analog Output: 0 to 5 VDC, non linear.
• Gauge Tube Orientation: Axis of tube must be horizontal.
• Line Power: 95 to 125 VAC, 50/60 Hz; 220 VAC optional, no extra cost.
• Wattage: 5 watts with both relays energized.
• Line Cord: 3 wire 1.7 meter (65 inch) attached.
• Gauge Tube Cable: Standard length is 3 m (10 ft.) attached to cabinet. Use up to 150 m (500 ft.) without affecting calibration.
• Mounting: 1/4 DIN enclosure suitable for panel or bench mounting. Panel mounting jack screws included. Carry handles also available.
• Weight with Gauge Tube: Net: 4 lb. (1.8 kg); Ship: 4.8 lbs. (2.2 kg.)
• Optional Set Points and Relays: 2 independent set points with front panel LED indicators and 2 SPDT relays 3 amp @ 115 VAC, non-inductive. Adjustable from front panel over 100% of range.

Please click on the links to the right, request a quote or contact Vacuum Research today for more information.