MKS Granville Phillips 274, Glass Tubulated Test Gauge with Single Thoria-coated Iridium Filament. MKS Granville Phillips Part Number: 274031 PRODUCT DISCONTINUED BY MKS. No replacement at this time. This MKS Granville Phillips Iridium glass ion gauge tube is a test gauge vacuum simulator, pumped down and pinched off at 1 X 10-5 or lower. The MKS Granville Phillips thoria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a thoria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Thoria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others.MKS Instruments 290, 919, 929Perkin Elmer DGC3Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips Iridium Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 3/4 inch Pyrex inlet Port, Vacuum Pressure Gauge. MKS Granville Phillips Part Number: 274002 PRODUCT DISCONTINUED BY MKS. Replaced by P1014163, MKS PN: 274102 These MKS Granville Phillips 274 Iridium glass ion gauge tubes have a 3/4 inch OD vacuum connection Pyrex Glass port and an operating range from 1x10-3 to 2x10-10 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and standard operating voltages (collector 0 VDC, Grid +180 VDC, filament -30 VDC with 5 VAC).The MKS Granville Phillips thoria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a thoria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Thoria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others.MKS Instruments 290, 919, 929Perkin Elmer DGC3Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips Single Yttria-Coated Iridium Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 0.75 in. Pyrex inlet Port, Vacuum Pressure Gauge. MKS Granville Phillips Part Number: 274102 REPLACES MKS PN 274002 (P104328) These MKS Granville Phillips 274 Iridium glass ion gauge tubes have a 0.75 in. OD vacuum connection Pyrex Glass port and an operating range from 1x10-3 to 1x10-9 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and the following standard operating voltages: Collector @ 0 V Grid @ +180 VDC Filament @ +30 VDC The MKS Granville Phillips yttria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have an yttria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Yttria-coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With: MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others. MKS Instruments 290, 919, 929 Perkin Elmer DGC3 Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301 Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips Iridium Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 3/4 inch Port, Vacuum Pressure Gauge. MKS Granville Phillips Part Number: 274003 PRODUCT DISCONTINUED BY MKS. Replaced by P1014164, MKS PN 274103 These MKS Granville Phillips Iridium glass ion gauge tubes have a 3/4 inch Kovar Metal Inlet OD vacuum connection port and an operating range from 1x10-3 to 2x10-10 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and standard operating voltages (collector 0 VDC, Grid +180 VDC, filament -30 VDC with 5 VAC).The MKS Granville Phillips thoria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a thoria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Thoria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others.MKS Instruments 290, 919, 929Perkin Elmer DGC3Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips Single Yttria-Coated Iridium Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 0.75 inch Metal Inlet Port, Vacuum Pressure Gauge MKS Granville Phillips Part Number: 274103 REPLACES MKS PN 274003 (P104329) These MKS Granville Phillips Iridium glass ion gauge tubes have a 0.75 inch Kovar Metal Inlet OD vacuum connection port and an operating range from 1x10-3 to 1x10-9 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and the following standard operating voltages: Collector @ 0 V Grid @ +180 VDC Filament @ +30 VDC The MKS Granville Phillips yttria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a yttria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Yttria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others. MKS Instruments 290, 919, 929 Perkin Elmer DGC3 Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301 Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips Iridium Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 1 inch Port, Vacuum Pressure Gauge. MKS Granville Phillips Part Number: 274006 PRODUCT DISCONTINUED BY MKS. Replaced by P1014165, MKS PN 27106 These MKS Granville Phillips Iridium glass ion gauge tubes have a 1 inch Kovar Metal Inlet OD vacuum connection port and an operating range from 1x10-3 to 2x10-10 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and standard operating voltages (collector 0 VDC, Grid +180 VDC, filament -30 VDC with 5 VAC).The MKS Granville Phillips thoria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a thoria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Thoria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others.MKS Instruments 290, 919, 929Perkin Elmer DGC3Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips Single Yttria-Coated Iridium Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 1 inch Metal Inlet Port, Vacuum Pressure Gauge MKS Granville Phillips Part Number: 274106 REPLACES MKS PN 274006 (P104331) These MKS Granville Phillips Single Yttria-Coated Iridium glass ion gauge tubes have a 1 inch Kovar Metal Inlet OD vacuum connection port and an operating range from 1x10-3 to 1x10-9 Torr. They have a sensitivity of 10 Torr-1 and the following standard operating voltages: Collector @ 0 V Grid @ +180 VDC Filament @ +30 VDC The MKS Granville Phillips yttria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have an yttria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Yttria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life.Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco.Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others. MKS Instruments 290, 919, 929 Perkin Elmer DGC3 Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301 Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips 274, Single Thoria Coated, Iridium Filament, Bayard-Alpert , KF25, ISO NW25, 3/4 in, Glass Ion Gauge. MKS Granville Phillips Part Number: 274032 PRODUCT DISCONTINUED BY MKS. Replaced by P1014170, MKS PN 274132 These MKS Granville Phillips Iridium glass ion gauge tubes have a KF25 ISO NW25 Inlet, and a 3/4 inch vacuum connection port with an operating range from 1x10-3 to 2x10-10 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and standard operating voltages (collector 0 VDC, Grid +180 VDC, filament -30 VDC with 5 VAC).The MKS Granville Phillips thoria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a thoria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Thoria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others.MKS Instruments 290, 919, 929Perkin Elmer DGC3Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips 274, Single Yttria Coated Iridium Filament, Bayard-Alpert, KF25/ISO NW25 fitting, 1.0 inch port, Glass Ion Gauge MKS Granville Phillips Part Number: 274132 REPLACES P104509, MKS PN 274032 These MKS Granville Phillips Iridium glass ion gauge tubes have a KF25 fitting, and a 1.0 inch vacuum connection port with an operating range from 1x10-3 to 2x10-9 Torr. They have a sensitivity of 10 Torr-1 and the following standard operating voltages: Collector @ 0 V Grid @ +180 VDC Filament @ +30 VDC The MKS Granville Phillips yttria-coated iridium (Ir) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All Ir filaments have an yttria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Yttria coated Ir is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With: MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others. MKS Instruments 290, 919, 929 Perkin Elmer DGC3 Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301 Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips 274, Thoria Coated Iridium Filament, Bayard-Alpert, 15 mm OD inlet, Pyrex Glass Ion Gauge. MKS Granville Phillips Part Number: 274036 PRODUCT DISCONTINUED BY MKS. NO REPLACEMENT These MKS Granville Phillips Iridium glass ion gauge tubes have a 15 mm OD inlet, vacuum connection port with an operating range from 1x10-3 to 2x10-10 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and standard operating voltages (collector 0 VDC, Grid +180 VDC, filament -30 VDC with 5 VAC).The MKS Granville Phillips thoria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a thoria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Thoria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others.MKS Instruments 290, 919, 929Perkin Elmer DGC3Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips 274 Single Thoria Coated, Iridium (IR) Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 2.75 inch CF Conflat, 3/4 inch OD Port, Vacuum Pressure Gauge. MKS Granville Phillips Part Number: 274007 These MKS Granville Phillips Iridium glass ion gauge tubes have a 2.75 inch CF Conflat Inlet, and a 3/4 inch vacuum connection port with an operating range from 1x10-3 to 2x10-10 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and standard operating voltages (collector 0 VDC, Grid +180 VDC, filament -30 VDC with 5 VAC).The MKS Granville Phillips thoria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a thoria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Thoria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others.MKS Instruments 290, 919, 929Perkin Elmer DGC3Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips 274 Single Thoria Coated, Iridium (IR) Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 2.75 inch CF Conflat, 0.75 inch OD Port, Vacuum Pressure Gauge. MKS Granville Phillips Part Number: 274107 REPLACES MKS PN 274007 (P104498) These MKS Granville Phillips Iridium glass ion gauge tubes have a 2.75 inch CF fitting and 0.75 inch vacuum connection inlet port with an operating range from 1x10-3 to 1x10-9 Torr. They have a sensitivity of 10 Torr-1 and the following standard operating voltages: Collector @ 0 V Grid @ +180 VDC Filament @ +30 VDC The MKS Granville Phillips yttria coated iridium (Ir) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have an yttria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Yttria coated Ir is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With: MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others. MKS Instruments 290, 919, 929 Perkin Elmer DGC3 Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301 Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips 274 Single Thoria Coated, Iridium (IR) Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 2.75 inch CF Conflat, 1 inch OD Port, Vacuum Pressure Gauge. MKS Granville Phillips Part Number: 274008 PRODUCT DISCONTINUED BY MKS. Repalced by P1014167, MKS PN 274108 These MKS Granville Phillips Iridium glass ion gauge tubes have a 2.75 inch CF Conflat Inlet, and a 1 inch vacuum connection port with an operating range from 1x10-3 to 2x10-10 Torr. These ion gauge tubes are compatible with most modern hot cathode ion gauge tubes. They have a sensitivity of 10 Torr-1 and standard operating voltages (collector 0 VDC, Grid +180 VDC, filament -30 VDC with 5 VAC).The MKS Granville Phillips thoria coated iridium (IR) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All IR filaments have a thoria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Thoria coated IR is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With:MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others.MKS Instruments 290, 919, 929Perkin Elmer DGC3Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips 274 Single Yttria Coated, Iridium (Ir) Filament Glass Ion Gauge Tube, Bayard-Alpert Style, 2.75 inch CF fitting, 1 inch OD Port, Vacuum Pressure Gauge MKS Granville Phillips Part Number: 274108 REPLACES P104499, MKS PN 274008 These MKS Granville Phillips Iridium glass ion gauge tubes have a 2.75 inch CF fitting, and a 1 inch vacuum connection inlet port with an operating range from 1x10-3 to 1x10-9 Torr. They have a sensitivity of 10 Torr-1 and the following standard operating voltages: Collector @ 0 V Grid @ +180 VDC Filament @ +30 VDC The MKS Granville Phillips yttria coated iridium (Ir) filament configuration can be used in any clean application, but is particularly practical in potentially oxygen rich environments. All Ir filaments have an yttria coating, which increases electron emission to approximately the same level as tungsten filaments. Iridium filaments, however, can be strongly degraded by metallic or organic contaminants, resulting in poor accuracy (filaments are easily poisoned by oil back-streaming from diffusion or mechanical vacuum pumps). Yttria coated Ir is very resistant to oxidation, and can even tolerate brief exposure to atmosphere during operation and will not damage or shorten the filament life. Iridium ion gauge tubes can be typically identified by the single white "hair-pin" shaped filaments and have four external leads at the plug end. This MKS Granville Phillips gauge tube works with most hot cathode ion gauge controllers made by MKS Granville Phillips, MKS Instruments, Perkin Elmer, Varian, & Veeco. Typically Works With: MKS Granville Phillips Models 260, 270, 280, 303, 306, 307 330, 340 ,350, and others MKS Instruments 290, 919, 929 Perkin Elmer DGC3 Varian 831, 836, 842, 844, 845, 880, 971-0003, 971-0014, 971-1008, Multi-Gauge, Varian 571 Tube K2471301 Veeco RG2, RG3, RG21, RG31, RG81, RG83, RG84, RG830, RG840, RG1000, RG1002

MKS Granville Phillips 307Cable for Tubulated Glass Ion Gauges, Remote Power Supply Mounting, 10 ft (3 meters). MKS Granville Phillips Part Number: 307030 These Granville Phillips 307 ion gauge cables are design for tubulated glass ion gauges. These cables can be used when remote mounting of the 307 power supply. These cables are 10 ft (3 meters) long.

MKS Granville Phillips Ion Gauge Tube Cable Connects 307 Ion Gauge Controller to Glass Ion Gauge Tube, 10ft. Long. MKS Granville Phillips Part Number: 307042 These MKS Granville Phillips 307 & 330 ion gauge controller cables connect the MKS Granville Phillips 307 or 330 controller to a single glass tube ion guage. These cable are 10ft long. Ion gauge controllers, ion gauge tubes, and thermocouple sensors are also available but sold separately.

MKS Granville Phillips 307 Cable for Tubulated Glass Ion Gauges, Remote Power Supply Mounting, 25 ft . MKS Granville Phillips Part Number: 307031 These MKS Granville Phillips 307 ion gauge cables are 25 ft. long and are design for tubulated glass ion gauges. These cables can be used when remote mounting of the 307 power supply.