275 Convectron® Convection-enhanced Pirani Vacuum Pressure Sensors
Overview
The Granville-Phillips® 275 Convectron® Pirani Vacuum Gauges have been the world-standard convection-enhanced Pirani gauge for over 35 years and are used in thousands of vacuum processes to accurately measure pressure from atmosphere to 10-4 Torr. To assure the highest level of accuracy and gauge-to-gauge reproducibility, every Convectron gauge is individually calibrated at the factory, thereby making controller adjustment unnecessary.
- Wide vacuum pressure measurement range from atmosphere to 1x10-4 Torr
- Individually calibrated gauges assure the highest measurement performance
- Easy installation in space-restricted locations
- Temperature compensation offsets the effects of ambient temperature changes
- Wide selection of vacuum fittings simplifies installation on your vacuum system
Products
| Compare | Description | Drawings, CAD & Specs | Availability | Price | |||
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275071 Vacuum Gauge, Convection-enhanced Pirani, 0.125 in. NPT Fitting | $163.00 |
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275185 Vacuum Gauge, Convection-enhanced Pirani, 4 VCR Female Fitting |
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$193.00 |
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275196 Vacuum Gauge, Convection-enhanced Pirani, NW25 ISO-KF Fitting | $198.00 |
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275203 Vacuum Gauge, Convection-enhanced Pirani, NW16 ISO-KF Fitting | $186.00 |
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275233 Vacuum Gauge, Convection-enhanced Pirani, 0.375 in. VCO Male Fitting | $198.00 |
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275238 Vacuum Gauge, Convection-enhanced Pirani, 2.75 in. OD CF Fitting | $216.00 |
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275256 Vacuum Gauge, Convection-enhanced Pirani, 1.33 in. OD CF Fitting | $198.00 |
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275282 Vacuum Gauge, Convection-enhanced Pirani, 8 VCR Female Fitting | $239.00 |
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275316 Vacuum Gauge, Convection-enhanced Pirani, NW40 ISO-KF Fitting | $233.00 |
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Specifications
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Sensor TypeConvectron® Pirani Vacuum Gauge
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Measurement Range1x10-4 Torr
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Exposed MaterialsSensor: Gold-plated tungsten
Other Materials: 304 stainless steel, borosilicate glass, Kovar®, Alumina, NiFe alloy, polyimide -
Bake Out Temperature150°C
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Operating Temperature4° to 50°C
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Installation OrientationHorizontal preferred
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Internal Volume35 cc
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Weight85 grams (3 ounces) for 1/8 NPT flange
Features
Convection-enhanced Pirani Gauge
Convectron gauges are a unique variation of thermal conductivity gauges where pressure measurement is based on the rate of heat loss from a sensor wire. Unlike traditional thermocouple and Pirani gauges that use only conductive heat loss, Convectron gauges take advantage of heat loss due to convection at higher pressures. This extends the range of accurate, repeatable measurement to atmosphere. The Convectron gauge delivers fast response time - in milliseconds - compared to thermocouple-type gauges that respond in seconds.
Resources
Literature
- Vacuum Measurement Product Guide (711.5 kB, PDF)
- 275 Convectron® Pirani Vacuum Gauge (199 kB, PDF)
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