275 Convectron® Convection-enhanced Pirani Vacuum Pressure Sensors

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

See All Features

Show Filters:

Showing 9 of 9 total products

Description	Compatibility	Fitting Type	Flange Size	Price
275071Vacuum Gauge, Convection-enhanced Pirani, 0.125 in. NPT Fitting	UNIVERSAL	0.125 in. NPT		$172
275185Vacuum Gauge, Convection-enhanced Pirani, 4 VCR Female Fitting	UNIVERSAL	4 VCR female		$203
275196Vacuum Gauge, Convection-enhanced Pirani, NW25 ISO-KF Fitting	UNIVERSAL	ISO-KF	NW25	$208
275203Vacuum Gauge, Convection-enhanced Pirani, NW16 ISO-KF Fitting	UNIVERSAL	ISO-KF	NW16	$196
275233Vacuum Gauge, Convection-enhanced Pirani, 0.375 in. VCO Male Fitting	UNIVERSAL	0.375 in. VCO male		$208
275238Vacuum Gauge, Convection-enhanced Pirani, 2.75 in. OD CF Fitting	UNIVERSAL	CF Flange	2.75 in.	$227
275256Vacuum Gauge, Convection-enhanced Pirani, 1.33 in. OD CF Fitting	UNIVERSAL	CF Flange	1.33 in.	$208
275282Vacuum Gauge, Convection-enhanced Pirani, 8 VCR Female Fitting	UNIVERSAL	8 VCR female		$251
275316Vacuum Gauge, Convection-enhanced Pirani, NW40 ISO-KF Fitting	UNIVERSAL	ISO-KF	NW40	$245

Specifications

Sensor Type
Convectron® Pirani Vacuum Gauge
Measurement Range
1x10^-4 Torr
Exposed Materials
Sensor: Gold-plated tungsten
Other Materials: 304 stainless steel, borosilicate glass, Kovar®, Alumina, NiFe alloy, polyimide
Bake Out Temperature
150°C

Operating Temperature
4° to 50°C
Installation Orientation
Horizontal preferred
Internal Volume
35 cc
Weight
85 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.

Accessories

Compatible Cables

Description	Compatibility	Price
475012-10Convectron Gauge Controller Cable, 10 ft.	UNIVERSAL	$123
475012-25Convectron Gauge Controller Cable, 25 ft.	UNIVERSAL	$147
475012-50Convectron Gauge Controller Cable, 50 ft.	UNIVERSAL	$191
475012-100Convectron Gauge Controller Cable, 100 ft.	UNIVERSAL	$282

Power Supplies and Displays

Description	Compatibility	Price
475001-00-MVacuum Gauge Controller, Convectron®, mBar Units	UNIVERSAL	$734
475001-00-TVacuum Gauge Controller, Convectron®, Torr Units	UNIVERSAL	$734
475001-00-PVacuum Gauge Controller, Convectron®, Pascal Units	UNIVERSAL	$734
475001-02-TVacuum Gauge Controller, Convectron®, 2 Relays, Torr Units	UNIVERSAL	$921
475001-02-MVacuum Gauge Controller, Convectron®, 2 Relays, mBar Units	UNIVERSAL	$921
475001-A0-TVacuum Gauge Controller, Convectron®, RS232, Torr Units	UNIVERSAL	$911
475001-02-PVacuum Gauge Controller, Convectron®, 2 Relays, Pascal Units	UNIVERSAL	$921
475001-A0-MVacuum Gauge Controller, Convectron®, RS232, mBar Units	UNIVERSAL	$911
475001-A2-PVacuum Gauge Controller, Convectron®, RS232, 2 Relays, Pascal Units	UNIVERSAL	$1,098
475001-A0-PVacuum Gauge Controller, Convectron®, RS232, Pascal Units	UNIVERSAL	$911
475001-A2-MVacuum Gauge Controller, Convectron®, RS232, 2 Relays, mBar Units	UNIVERSAL	$1,098
475001-A2-TVacuum Gauge Controller, Convectron®, RS232, 2 Relays, Torr Units	UNIVERSAL	$1,098
475001-B0-TVacuum Gauge Controller, Convectron®, RS485, Torr Units	UNIVERSAL	$911
475001-B0-MVacuum Gauge Controller, Convectron®, RS485, mBar Units	UNIVERSAL	$911
475001-B2-TVacuum Gauge Controller, Convectron®, RS485, 2 Relays, Torr Units	UNIVERSAL	$1,098
475001-B2-PVacuum Gauge Controller, Convectron®, RS485, 2 Relays, Pascal Units	UNIVERSAL	$1,098
475001-B0-PVacuum Gauge Controller, Convectron®, RS485, Pascal Units	UNIVERSAL	$911
475001-B2-MVacuum Gauge Controller, Convectron®, RS485, 2 Relays, mBar Units	UNIVERSAL	$1,098