Keithley 200A(Model200 252C200A) free download

File name 200A(Model200_252C200A).pdf

INSTRUCTION MANUAL MODELS 200,200A ELECTROMETER VOLTMETERS WARRANTY We warrant each of our products to be free from defects in material and workmanship. Our obligation under this warranty is to repair or replace any instrument or part thereof (except tubes and batteries) which, within a year after shipment, proves defective upon examination. We will pay domestic surface freight costs. To exercise this warranty, call your local field representative or the plant directly, DDD 216. 795.2666. You will be given assistance and shipping instructions. REPAIRS AND RECALIBRATION Keithley Instruments maintains a complete re- pair service and standards laboratory in Cleve- land, and has authorized field repair facilities in Los Angeles and Albuquerque. To insure prompt repair or recalibration serv. ice, please contact your local field represent- ative, or the plant directly, before returning the instrument. Estimates for repairs, normal recalibrations, and calibrations traceable to the National Bu- reau of Standards are available upon request. MODEL 200, 2OOAELFLYl'ROMEXl'ER TARLEOF COl4TEN'B Title EeE! Section I. General ... L-1 Table of Specificationa ... l-2 section II. Description ... 2-l Section III. Operation ... 3-l Connections ... 3-1 Range ... 3-l Zero ... 3-l Measurement ... 3-1 Increasing Voltage Sensitivity ... 3-3 Alternative Methods of Recording ... 3-3 Uses ... 3-3 Section IV. Maintenance ... 4-l Battery Replacements ... 4-l Tube Replacement ... 4-l Recalibration Instructions ... 4-l Insulation Resistance ... 4-2 Schematic Diagrams Appendix - Uses 0762~ MODEL 200, 200A EI.,EX!TRoMETER GENERAL SECTION1 -GENERAL The Keithley Vacuum Tube Electrometers provide rapid and accurate measurements of dc voltage in circuits having extremely high internal resistance, and for dc applications where no current can be drawn from the voltage source. They