Keithley 150B(Model150BMicroAmmeter) free download

File name 150B(Model150BMicroAmmeter).pdf

INSTRUCTION MANUAL MODEL 15OB MICROVOLT AMMETER 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 Cleveland factory, DDD 216-248-0400. You will be given assist- ance and shipping instructions. REPAIRS AND RECALIBRATION Keithley instruments maintains a complete re- pair service and standards laboratory in Cleve- land, and has an authorized field repair facility in Los Angeles. To insure prompt repair or recalibration serv- ice, please contact your local field representa- tive 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 150B MICROVOLT AMMETER TABLE OF CONTENTS TABLE OF CONTENTS Section Page Section Page MODEL 150B SPECIFICATIONS. ... .ii 4. MAINTENANCE. . . . . . . . . . . 19 1. GENERAL DESCRIPTION. ... 1 4,-l. General. . . . . . . . . . . 19 4-2. Parts Replacement. . . . . . 19 l-1. General. ... 1 4,-3. Mechanical Chopper l-2. As a Microvoltmeter. ... 1 Replacement. . . . . . . . . 19 l-3. As a Null Detector ... 1 4,-4,. Troubleshooting. . . . . . . 20 l-4 .. As an Ammeter. ... 1 4-5. Preliminary Troubleshooting Procedures . . . . . . . . . 20 2. OPERATION. ... 3 4,-6. Check Out and Calibration Procedures . . . . . . . . . 20 2-1. Mode of Operation. . . . . . .3 4-7. Power Supply Check Out 2-2. Battery Operation. . . . . . .3 and Calibration. . . . .