Granville-phillips 280-004 Digital Ionization Gauge

US $599.99

Phoenix, Arizona, United States
Jan 30th

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Granville-Phillips 280-004 Digital Ionization Gauge Controller Series 280 All items are sold as is without warranty unless specifically stated in the posting. This does not mean that the unit doesn’t work, only that we have not tested or checked it out. This may also mean that we are not knowledgeable in that specific item. Please call Brent Toll Free at 1-866-MHZ-ELEC (1-866-649-3532) if you have questions between the hours of 9:00 AM and 4:00 PM Monday thru Friday Pacific Time. The Item may vary from picture as manufacture may change model appearance. All information, including description, specifications and features are from a manufacturers data sheet or manual and are subject to change without notice. Meaning that all information included in the description, specifications and features may not be included with the actual item being put up for auction. What you see is what you get! If it doesn’t show it you probably won’t get it! What you are bidding on is a nice looking Granville-Phillips 280 Digital Ionization Gauge Controller in nice physical and cosmetic condition however some switches will need to be replaced, they are bent and or broken. This unit does power up nicely! Granville-Phillips Series 280 Digital Ionization Gauge Controller Catalog Number: 280-004 Model Number: 00 Serial Number: 1833 Date Code: C7 !!Copy of Instruction Manual Included!! General Description: The 280 Digital Ionization Gauge Controller is a precision instrument designed to indicate vacuum pressures from 1 Torr to 10-8 mbar, and 100 Pascal to 10-6 Pascal, air equivalent. The basic unit is comprised of a power supply, electrometer, emission controller, converter, and display. Dual thermocouple gauge capability and process controls on the ion gauge and thermocouple gauges are included on some models. Recorder outputs provide capability for remote indication as well as continuous monitoring. A digital BCD output option may be added to any Series 280 digital controller. This option can be either installed at the factory or in the field. In its basic form the 280 digital controller will display pressure data in five linear decades, 10-8 to 10-4 Torr. The controller is designed to utilize a Bayard-Alpert type transducer with sensitivity ranging from 8/Torr to 25/Torr. Specifications: Recorder Output, Ion Gauge: 1) 0 to -4V corresponding to front panel indication of 0 to 19.9 x 10-x. Output impedance is 2 Kohm. 2) 0 to -5V corresponding to IV/decade of pressure. Output impedance is 2 Kohms Recorder Output, Thermocouple: 0 to 2V corresponding to 0 to 1 Torr (0 to 1.33 mbar) of air; output impedance is 1.86 Kohms ±1% Automatic Ranging: up 117% FS; down 9.5% FS Electrical Characteristics: Collector Voltage to Ground: 0V Grid Voltage to Ground: +180V nominal Filament Voltage to Ground: +30V nominal Filament Power Available: 6 VAC, 6 A Degas Power Available: 8 VAC, 10 A (12 A Max) Process Control Range, Ionization: 3 x 10-9 Torr to 10 x 10-4 Torr 3 x 10-9 mbar to 10 x 10-4 mbar 3 x 10-7 Pa to 10 x 10-2 Pa Process Control Range, Thermocouple: 1 x 10-3 Torr to 1 Torr 1 x 10-3 mbar to 1 mbar 1 x 10-1 Pa to 100 Pa Pressure Range – Ionization Gauge: Five decades of linear ranges from: 10.0 x 10-8 Torr FS to 10.0 x 10-4 Torr FS 10.0 x 10-8 mbar FS to 10.0 x 10-4 mbar FS 10.0 x 10-6 Pa FS to 10.0 x 10-2 Pa FS Readable Range of: 1 x 10-9 Torr to 1.99 x 10-3 Torr 1 x 10-9 mbar to 1.99 x 10-3 mbar 1 x 10-7 Pa to 1.99 x 10-1 Pa Thermocouple Gauge: 10-3 Torr to 1 Torr 10-3 mbar to 1 mbar 10-1 Pa to 100 Pa (using mbar x 10^2 factor) Ambient Operating Temperature Range: 0 - +50° Celsius Degas: Power approx. 80 watt using resistive heating of the grid. Pressure measurements are not possible during degas Emission Current: Preset at 2.0 mAdc for Bayard-Alpert gauges with N2 sensitivity of 10/Torr Emission Current Range: 0.6 mA to 3 mA to accommodate gauge sensitivity between 25/Torr and 8/Torr Stability of Ionization Gauge: With Time: ±0.25% FS/50 h With Temperature: ±1%, FS, 0 – 50° Celsius With Line Voltage: ±0.25% FS Stability of Thermocouple Circuit: With Time: ±0.25% FS/50 h With Temperature: ±2.25%, FS, 0 – 50° Celsius With Line Voltage: ±0.5% FS Physical Dimensions: 19” W x 11 1/2 ” D x 3 1/2 ” H Shipping Weight: 20 lbs. Actual Weight: 11.5 lbs. Have a nice day and thanks for looking. Enjoy bidding and good luck. This unit is being sold as is. The charge for freight will be determined by the destination upon the ending of the auction. There will be a packing fee on larger and heavier items it will be determined by the size and the care that has to go into packing an item. Most of the time, people are impressed with the job we do because we customize our own skids for larger items and we take the utmost care to provide a safe and cozy journey for your item. We strive to make our customers happy and want you to feel that we have treated you with the ultimate respect. Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.