Becker VT 4.4 Single Stage, Oil free, Rotary Vane Vacuum Pump, WITH vacuum and blow off valve, 1 Phase, 50/60 Hz,1 phase 110/220 VAC. Becker Part Number: G010418 The Becker VT 4.4 single stage oil free rotary vane vacuum pump with vacuum and blowoff valve is designed and manufactured to meet the demanding requirements of various industrial and scientific applications requiring continuous operation at low vacuum. This VT 4.4 comes equipped with a 1 phase wide range voltage TEFC motor running 110/220 VAC @50/60Hz motor, making it both versitle and durable. The VT 4.4 pumps up to 2.8 CFM, has an ultimate pressure of 110 Torr (146 Mbar) and runs quiet at a modest 60 Db. Using carbon graphite vanes, which are self lubricating and have a low coefficient of thermal expansion, The VT 4.4 is capable of running for extended periods of time and requires exceptionally minimal maintenance. All Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentials. Some applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting Please check our downloads section for user manuals, spare parts lists and data sheets!

Becker VT 4.4 Single Stage, Oil free, Rotary Vane Vacuum Pump, 3 Phase, 50/60 Hz175-260/330-450 Vac @ 50Hz & 202-300/350-520 VAC @ 60Hz 0.28 HP. The Becker VT 4.4 single stage oil free rotary vane vacuum pump is designed and manufactured to meet the demanding requirements of various industrial and scientific applications requiring continuous operation at low vacuum. This VT 4.4 comes equipped with a 3 phase wide range voltage TEFC motor running 175-260/330-450 Vac @ 50Hz & 202-300/350-520 VAC @ 60Hz motor, making it both versitle and durable. The VT 4.4 pumps up to 2.8 CFM, has an ultimate pressure of 110 Torr (146 Mbar) and runs quiet at a modest 60 Db. Using carbon graphite vanes, which are self lubricating and have a low coefficient of thermal expansion, The VT 4.4 is capable of running for extended periods of time and requires exceptionally minimal maintenance. All Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentials. Some applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting Please check our downloads section for user manuals, spare parts lists and data sheets!

Becker VT 4.8 Single Stage, Oil free, Rotary Vane Vacuum Pump, 3 Phase, 50/60 Hz175-260/330-450 Vac @ 50Hz & 202-300/350-520 VAC @ 60Hz 0.56 HP. The Becker VT 4.8 single stage oil free rotary vane vacuum pump is designed and manufactured to meet the demanding requirements of various industrial and scientific applications requiring continuous operation at low vacuum. This VT 4.8 comes equipped with a 3 phase wide range voltage TEFC motor running 175-260/330-450 Vac @ 50Hz & 202-300/350-520 VAC @ 60Hz motor, making it both versitle and durable. The VT 4.8 pumps up to 5.4 CFM, has an ultimate pressure of 110 Torr (146 Mbar) and runs quiet at a modest 60 Db. Using carbon graphite vanes, which are self lubricating and have a low coefficient of thermal expansion, The VT 4.8 is capable of running for extended periods of time and requires exceptionally minimal maintenance. All Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentialsSome applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting Please check our downloads section for user manuals, spare parts lists and data sheets!

Becker VT 4.10 Single Stage, Oil free, Rotary Vane Vacuum Pump, 3 Phase, 50/60 Hz175-260/330-450 Vac @ 50Hz & 202-300/350-520 VAC @ 60Hz 0.6 HP. The Becker VT 4.10 single stage oil free rotary vane vacuum pump is designed and manufactured to meet the demanding requirements of various industrial and scientific applications requiring continuous operation at low vacuum. This VT 4.10 comes equipped with a 3 phase wide range voltage TEFC motor running 175-260/330-450 Vac @ 50Hz & 202-300/350-520 VAC @ 60Hz motor, making it both versitle and durable. The VT 4.10 pumps up to 7.1 CFM, has an ultimate pressure of 110 Torr (146 Mbar) and runs quiet at a modest 60 Db. Using carbon graphite vanes, which are self lubricating and have a low coefficient of thermal expansion, The VT 4.10 is capable of running for extended periods of time and requires exceptionally minimal maintenance. All Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentialsSome applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting Please check our downloads section for user manuals, spare parts lists and data sheets!

Becker VT 4.16 Single Stage, Oil free, Rotary Vane Vacuum Pump, 3 Phase, 50/60 Hz175-260/330-450 Vac @ 50Hz & 202-300/350-520 VAC @ 60Hz 0.94 HP. The Becker VT 4.16 single stage oil free rotary vane vacuum pump is designed and manufactured to meet the demanding requirements of various industrial and scientific applications requiring continuous operation at low vacuum. This VT 4.16 comes equipped with a 3 phase wide range voltage TEFC motor running 175-260/330-450 Vac @ 50Hz & 202-300/350-520 VAC @ 60Hz motor, making it both versitle and durable. The VT 4.16 pumps up to 11 CFM, has an ultimate pressure of 110 Torr (146 Mbar) and runs quiet at a modest 60 Db. Using carbon graphite vanes, which are self lubricating and have a low coefficient of thermal expansion, The VT 4.16 is capable of running for extended periods of time and requires exceptionally minimal maintenance. All Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentialsSome applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting Please check our downloads section for user manuals, spare parts lists and data sheets!

Becker VT 4.25 Single Stage, Oil free, Rotary Vane Vacuum Pump, 3 Phase, 60 Hz208/230/460 VAC @ 60Hz 1.2 HP. The Becker VT 4.25 single stage oil free rotary vane vacuum pump is designed and manufactured to meet the demanding requirements of various industrial and scientific applications requiring continuous operation at low vacuum. This VT 4.25 comes equipped with a 3 phase direct drive IE3 motor running 208/230/460 VAC @ 60Hz. The VT 4.25 pumps up to 18 CFM, has an ultimate pressure of 110 Torr (146 Mbar) and runs quiet at a modest 60 Db. Using carbon graphite vanes, which are self lubricating and have a low coefficient of thermal expansion, The VT 4.25 is capable of running for extended periods of time and requires exceptionally minimal maintenance. All Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentials. Some applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting

Becker VT 4.40 Single Stage, Oil free, Rotary Vane Vacuum Pump, 1-Phase 208-220 VAC @ 60Hz 2.0 HP.The Becker VT 4.40 single stage oil free rotary vane vacuum pump is designed and manufactured to meet the demanding requirements of various industrial and scientific applications requiring continuous operation at low vacuum. This VT 4.40 comes equipped with a 1- phase direct drive IE3 motor running 208/220 VAC @ 60Hz. The VT 4.40 pumps up to 28 CFM, has an ultimate pressure of 110 Torr (146 Mbar) and runs quiet at a modest 60 Db. Using carbon graphite vanes, which are self lubricating and have a low coefficient of thermal expansion, The VT 4.40 is capable of running for extended periods of time and requires exceptionally minimal maintenance.All Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentials. Some applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting

Becker VT 4.40 Single Stage, Oil free, Rotary Vane Vacuum Pump, 3 Phase, 208/230/460 VAC @ 60Hz 2.0 HP. The Becker VT 4.40 single stage oil free rotary vane vacuum pump is designed and manufactured to meet the demanding requirements of various industrial and scientific applications requiring continuous operation at low vacuum. This VT 4.40 comes equipped with a 3 phase direct drive IE3 motor running 208/230/460 VAC @ 60Hz. The VT 4.40 pumps up to 28 CFM, has an ultimate pressure of 110 Torr (146 Mbar) and runs quiet at a modest 60 Db. Using carbon graphite vanes, which are self lubricating and have a low coefficient of thermal expansion, The VT 4.40 is capable of running for extended periods of time and requires exceptionally minimal maintenance.All Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentials. Some applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting

Pfeiffer KF-16 to 1/4 inch G adapter for inlet exhaust to MVP 035-2, MVP 040-2, and MVP 055-3. Pfeiffer MVP diaphragm pumps come with G BSPP intake and exhaust thread ports, please read the manual to find out the correct G thread. This thread size is primarily used in Europe and Great Britain. This adapter converts "G" BSPP thread to a KF-16 flange which is more commonly used in the universal world wide vacuum market.BSPP = British Standard Pipe Parallel (straight thread) and is often noted G, for example, G(1/4).BSPT = British Standard Pipe Taper (tapered threads).These KF-16 to G (BSPP thread) adapters screw into pump inlet and or exhaust for easy connection to standard ISO KF or NW roughing line fittings.

Adapter KF16 to G 3/8 inch BSPP, Fits VT 4.8 Becker Pumps. Becker VT 4.8 vacuum pumps come with a G 3/8" BSPP inlet thread. This thread size is primarily used in Europe and Great Britain. This adapter converts "G" BSPP thead to a KF-16 flange more commonly used in the universal world wide vacuum market. BSPP = British Standard Pipe Parallel (straight thread) and is often noted G, for example, G(1/2). BSPT = British Standard Pipe Taper (tapered threads).

Adapter KF40 to G 3/4 inch BSPP, Fits VT 4.52 & VT 4.40 Becker Pumps.. Becker VT 4.52 & VT 4.40 vacuum pumps come with a "G" BSPP inlet thread. This thread size is primarily used in Europe and Great Britain. This adapter converts "G" BSPP thead to a KF-16 flange more commonly used in the universal world wide vacuum market. BSPP = British Standard Pipe Parallel (straight thread) and is often noted G, for example, G(1/2). BSPT = British Standard Pipe Taper (tapered threads).

Leybold Adapter KF16 to 1/2 inch G BSPP Straight Threads, fits Leybold Sogevac SV10B and SV16B Vacuum Pumps. Leybold Part Number: 71118120. Leybold Sogevac SV10B and SV16B vacuum pumps come with a "G" BSPP inlet thread. This thread size is primarily used in Europe and Great Britain. This adapter converts "G" BSPP thead to a KF-16 flange more commonly used in the universal world wide vacuum market. BSPP = British Standard Pipe Parallel (straight thread) and is often noted G, for example, G(1/2). BSPT = British Standard Pipe Taper (tapered threads).

Foreline Trap for Inlet KF16 Rotary Vane Vacuum Pumps up to 18 CFM. This Foreline Trap NW16, KF-16 serves to prevent contaminants from entering the pump inlet and protects the system from pump fluid or particulate migration. (Backstreaming) This trap extends the life of the pump, cuts maintenance costs and helps prevent system downtime. Made of durable corrosive resistant nickel chrome finish which prevents outgassing. Interchangeable Filter Media is not included with this foreline trap but is available from this website. Filter Media options include, Activated Alumina, Stainless Steel Wire Mesh, Activated Carbon Granulate and Polyester Media. Common Dimensions & Specifications:Use with vacuum pumps KF-16, NW16 Inlets and up to 18 CFM pumping speeds. A= 4"B= 2-3/16"C= 3-3/4"

Foreline Trap for Inlet KF25 Rotary Vane Vacuum Pumps up to 18 CFM. This Foreline Trap NW25 KF25 serves to prevent contaminants from entering the pump inlet and protects the system from pump fluid or particulate migration. (Backstreaming) This trap extends the life of the pump, cuts maintenance costs and helps prevent system downtime. Made of durable corrosive resistant nickel chrome finish which prevents outgassing. Interchangeable Filter Media is not included with this foreline trap but is available from this website. Filter Media options include, Activated Alumina, Stainless Steel Wire Mesh, Activated Carbon Granulate and Polyester Media. Common Dimensions & Specifications:Use with vacuum pumps KF25 NW25 Inlets and up to 18 CFM pumping speeds. A= 4"B= 2-3/16"C= 3-3/4"

Filter Media Activated Alumina for Foreline Traps KF-16 (P1013392) and KF-25 (P101861). This Activated Alumina Media is for foreline traps KF-16 (P1013392) and KF-25 (P101861) sold on this website. This Activated Alumina media has a long life span and is very effective in preventing backstreaming and in trapping water & acid vapors. (Lewis acids, polar compounds & other acids)

Filter Media HEPA for Foreline Traps KF-16 (P1013392) and KF-25 (P101861). This HEPA Media is for KF-16 (P1013392) and KF-25 (P101861) Foreline Traps on this website. This is only one HEPA media filter, the foreline trap is sold separately. Details for this HEPA filter: Reinforced with epoxy coated steel wire on both sides of cloth Maximum oversize required to minimize pressure drop Heavy duty industrial strength glass surrounded by heavy gauge expanded metal Optimal sealing surface & design Filter change out differential: 10"-15" in. H2O above initial delta P Temp (continuous): min -15° F ( -26° C) max 220° F 99.97% removal efficiency standard to 0.3 micron Handles hot air and oil mist from rotary vane vacuum pumps Moisture resistant More durable than paper media Less maintenance Dust loading capacity is increased 40 % - 50% with polyurethane prefilter

Filter Media Activated Carbon Granule for Foreline Traps KF-16 (P1013392) and KF-25 (P101861). This Activated Carbon Granule media is for foreline traps KF-16 (P1013392) and KF-25 (P101861). This activated carbon granule stops both particulate matter, gas or vapor odors and contaminants.

Filter Media Polyester Media for Foreline Trap KF-16 (P1013392) and KF-25 (P101861). This Polyester Media is for foreline traps KF-16 (P1013392) and KF-25 (P101861) sold in this website. This Polyester Media is 99+% efficient to 5 microns with stainless steel support core.

Filter Media Stainless Steel Wire Mesh for Foreline Traps KF-16 (P1013392) and KF-25 (P101861). This Stainless Steel Wire Mesh is for NW25 KF25 Foreline Traps on this website. Foreline Traps KF-16 (P1013392) and KF-25 (P101861). This Stainless Steel Wire Mesh is corrosive resistant media, with a large surface area. Traps condensable particles & oil vapors.

In-Built Inlet Filter Cartridge for Becker VT 3.16 or 4.16 Oil-Free Vacuum Pumps. This cartridge filter is for the in-built inlet filter on Becker VT 3.16 or VT 4.16 dry rotary vane vacuum pumps. About the Becker Dry Rotary Vane Vacuum PumpsAll Becker VT series oil free pumps come standard with a vacuum relief valve, discharge silencer and in-built inlet filter. At low cost, long lifetime of operation and easilly manageable maintenance, Becker VT series oil free dry rotary vane pumps are industry essentials. Some applications include: Graphic arts Robotics and material handling Packaging Air sampling, and paper converting

Foreline Trap (Black Powder Finish) for Inlet KF40 Rotary Vane Vacuum Pumps up to 80 CFM This Foreline Trap NW40 KF40 serves to prevent contaminants from entering the pump inlet and protects the system from pump fluid or particulate migration. (Backstreaming) This trap extends the life of the pump, cuts maintenance costs and helps prevent system downtime. Made of durable corrosive resistant nickel which prevents outgassing. Black powder finish. Interchangeable Filter Media is not included with this foreline trap but is available from this website. Filter Media options include, Activated Alumina, Stainless Steel Wire Mesh, Activated Carbon Granulate and Polyester Media. Common Dimensions & Specifications: Use with vacuum pumps KF40 NW40 Inlets and up to 80 CFM pumping speeds. A= 6-3/4 B= 4-1/2 C= 7-5/16

Hinge Clamp KF-10, KF-16 Vacuum Fittings, ISO-KF Flange Size NW-10, NW-16, AluminumThese KF-10, KF-16 Hinge Clamp vacuum fittings follow ISO-KF standards and have a flange size of NW-10, NW-16. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of Aluminum.KF-10, KF-16 Hinge ClampISO-KF Flange Size: NW-16Common Dimensions: A=2.45" (62.30mm)B=1.61" (41mm)C=0.649" (16.5mm)

Hinge Clamp KF-25 Vacuum Fittings, ISO-KF Flange Size NW-25, AluminumThese KF-25 Hinge Clamp vacuum fittings follow ISO-KF standards and have a flange size of NW-25. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of Aluminum.KF-25 Hinge ClampISO-KF Flange Size: NW-25Common Dimensions:A=2.85" (72.40mm)B=2.12" (54mm)C=0.649" (16.50mm)

Ideal Vacuum XactGauge Convection-Enhanced Pirani Gauge Kit, XGC-320 Controller, XGC-321 KF-16 Gauge, 10 ft. Sensor Cable, PS, 2 Set Points Complete Kit Includes: XactGauge XGC-320 Convection-Enhanced Controller, XGC-321 KF-16 Sensor Gauge, 3 m (10 ft.) Sensor Cable & Power Supply. Features: Inexpensive solution for Pirani type thermal conductivity gauges Convection-Enhanced Pirani sensor gauges available in 8 different flange sizes Accurate pressure measurements from 1x10-4 to 1000 Torr Compact 1/8-DIN package fits on bench or in instrument panel cutout Bright, easy to read, 4 digit OLED display Intuitive front panel controls for calibration and parameter adjustments Switch between Torr, mBar and Pa units quickly Serial RS232/RS485 DB9 I/O interface for remote control 2 set points 4 analog outputs Compatible with Granville-Phillips® 275 Convectron® and Inficon PGE050 Pirani Gauge Enhanced sensors and cables. The Ideal Vacuum XactGauge XGC-320 Convection Enhanced Pirani Gauge Controller is an inexpensive solution for simple readout of Pirani type thermal conductivity gauges with added features for ease of use and system integration. Use with any of our eight (8) XactGauge Enhanced Pirani Sensor Gauges to obtain accurate pressure measurements ranging from 1x10-4 to 1000 Torr. Our XactGauge XGC-320 Controller, conveniently housed in a compact 1/8-DIN enclosure, can be used on your benchtop or mounted in an instrument panel cutout. The bright, OLED 4 digit display is easy to read. Intuitive front panel controls allow direct gauge calibration and simple adjustment of vacuum measurement parameters. The XactGauge XGC-320 Convection-Enhanced Pirani Gauge Controller is powered by user supplied 12 to 28 VDC, 2 W, or by our XactGauge Enhanced Pirani Controller power supply. The XGC-320 Controller has a serial RS232/RS485 (DB-9) remote I/O interface, two (2) setpoints, and four (4) analog relay outputs, each rated at 1 A at 30 VDC. This XGC-320 Controller is compatible with other manufacturer’s Pirani type gauges and cables, including the Granville-Phillips® 275 Convectron® and the Inficon PGE050 Pirani Gauge Enhanced. Thermal conductivity gauges measure pressure indirectly by sensing the loss of heat from a sensor to the surrounding gas. The higher the pressure of the gas, the more heat is conducted away from the sensor. Pirani thermal conductivity gauges maintain a sensor (usually a wire) at a constant temperature and measure the current or power required to maintain that temperature. A standard Pirani gauge has a useful measuring range of about 10-4 Torr to 10 Torr. Convection-enhanced Pirani gauges take advantage of the convection current inside the sensor to extend the pressure measurement range to just above atmosphere. The XactGauge is supplied factory calibrated using Nitrogen (N2) gas. When measuring gasses other than Nitrogen/Air, accurate correction must be made for the difference in thermal conductivity between nitrogen and the gas in use, particularly at pressures above 1 Torr. DO NOT USE for explosive, corrosive or toxic gasses.

Ideal Vacuum XactGauge Convection-Enhanced Pirani Gauge Kit, XGC-320 Controller, XGC-321 KF-25 Gauge, 10 ft. Sensor Cable, PS, 2 Set Points Complete Kit Includes: XactGauge XGC-320 Convection-Enhanced Controller, XGC-321 KF-25 Sensor Gauge, 3 m (10 ft.) Sensor Cable & Power Supply. Features: Inexpensive solution for Pirani type thermal conductivity gauges Convection-Enhanced Pirani sensor gauges available in 8 different flange sizes Accurate pressure measurements from 1x10-4 to 1000 Torr Compact 1/8-DIN package fits on bench or in instrument panel cutout Bright, easy to read, 4 digit OLED display Intuitive front panel controls for calibration and parameter adjustments Switch between Torr, mBar and Pa units quickly Serial RS232/RS485 DB9 I/O interface for remote control 2 set points 4 analog outputs Compatible with Granville-Phillips® 275 Convectron® and Inficon PGE050 Pirani Gauge Enhanced sensors and cables. The Ideal Vacuum XactGauge XGC-320 Convection Enhanced Pirani Gauge Controller is an inexpensive solution for simple readout of Pirani type thermal conductivity gauges with added features for ease of use and system integration. Use with any of our eight (8) XactGauge Enhanced Pirani Sensor Gauges to obtain accurate pressure measurements ranging from 1x10-4 to 1000 Torr. Our XactGauge XGC-320 Controller, conveniently housed in a compact 1/8-DIN enclosure, can be used on your benchtop or mounted in an instrument panel cutout. The bright, OLED 4 digit display is easy to read. Intuitive front panel controls allow direct gauge calibration and simple adjustment of vacuum measurement parameters. The XactGauge XGC-320 Convection-Enhanced Pirani Gauge Controller is powered by user supplied 12 to 28 VDC, 2 W, or by our XactGauge Enhanced Pirani Controller power supply. The XGC-320 Controller has a serial RS232/RS485 (DB-9) remote I/O interface, two (2) setpoints, and four (4) analog relay outputs, each rated at 1 A at 30 VDC. This XGC-320 Controller is compatible with other manufacturer’s Pirani type gauges and cables, including the Granville-Phillips® 275 Convectron® and the Inficon PGE050 Pirani Gauge Enhanced. Thermal conductivity gauges measure pressure indirectly by sensing the loss of heat from a sensor to the surrounding gas. The higher the pressure of the gas, the more heat is conducted away from the sensor. Pirani thermal conductivity gauges maintain a sensor (usually a wire) at a constant temperature and measure the current or power required to maintain that temperature. A standard Pirani gauge has a useful measuring range of about 10-4 Torr to 10 Torr. Convection-enhanced Pirani gauges take advantage of the convection current inside the sensor to extend the pressure measurement range to just above atmosphere. The XactGauge is supplied factory calibrated using Nitrogen (N2) gas. When measuring gasses other than Nitrogen/Air, accurate correction must be made for the difference in thermal conductivity between nitrogen and the gas in use, particularly at pressures above 1 Torr. DO NOT USE for explosive, corrosive or toxic gasses.