Keithley 642 Electrometer w/Remote Head & Cable

Description: Keithley 642 Electrometer w/Remote Head & Cable Comes with a manual and what you see in the pictures. If you don't see it, you probably wont get it. Specifications are from Keithley and may vary slightly due to upgrades, options, or revisions this unit may or may not have. These units are sold fully tested and guaranteed to work for 30-days, parts and labor, excluding freight. Description: The Model 642 is a direct reading MOSFET based Electrometer useful for sensitive measurement of voltage, current and charge. Voltage reading capabilities are 10 microvolts to 10 volts with 1016 ohms input resistance, typically shunted by less than 2 picofarads. Its current measurement range is 10-17 to 10-7 amperes with only a few hundred microvolts input voltage burden. Charge can be measured from 4 x 10-16 coulomb to 10-10 coulomb. Some of the instrument features include: 19,999 count resolution with a 4-1/2 digit LED display. Two analog outputs which are provided on mainframe rear panel (1 volt per 10,000 counts and 1 volt per 100 counts of the digital display) Mainframe front panel pushbuttons whicih permit selection of function and range, power off/on, variable or minimum damping and zero check. A front panel zero knob used to compensate for input and amplifier offsets. Specifications: As a DC Ammeter: Current Setting:Maximum Reading On 0.1 Range:Maximum Reading On 10 Range:10-8 A0.19999 x 10-8 A10.999 x 10-8 A10-10 A0.19999 x 10-10 A10.999 x 10-10 A10-11 A0.19999 x 10-11 A10.999 x 10-11 A10-12 A0.19999 x 10-12 A10.999 x 10-12 A Current Setting:25°C ±1°C 6-Month accuracy ±(% rdg + digits):1% Settling Time On 10 Range at 1 V/10k Count Analog Output, at Minimum Damping:10-8 A1% + 3d40 ms10-10 A1% + 3d100 ms10-11 A1.3% + 3d400 ms10-12 A1.5% + 6d5 s Noise: 8 x 10-17 A rms (2 x 10-16 A p-p). Less than 15 self-generated alpha pulses per hour. As a DC Voltmeter: Range: Maximum Reading: 20 C to 30 C 6-Mo. Accuracy (Exclusive of Noise): 1% Settling Time At 1V/10k Count Analog Output0.1 V0.199990.05% + 3 digits3 sec1 V1.99990.05% + 1 digit0.3 sec.10 V10.9990.05% + 1 digit0.03 sec. Noise: Less than 20 µV (100 µV p-p). Zero Stability: 24 hours, ±3°C: ±180 µV. Temperature Coefficient Outside of ±3°C Span: ±(30 µV + 0.5 digit)/°C. Input Resistance: Greater than or equal 1016 Ω As A Coulombmeter: Ranges: 10-11 coulombs, 0.1, 1, or 10 ranges. Input Current (at 25°C ±1°C): Less than 5 x 10-17 A. Accuracy (at 25°C ±1°C for 6 months, exclusive of noise): ±(0.3% + 5 digits). Noise: 8 x 10-16 coulombs rms (4 x 10-15 coulombs p-p), 0.1 range. Less than 15 self-generated alpha pulses per hour. Charge Error Due to Actuation of Zero Check: Typically less than 10-14 coulombs. General Specifications: Maximum Inputs: Normal or Common Mode: 30 Vrms DC to 60 Hz. Display: Five 0.5 inch LED digits with decimal point and polarity indication. Coversion Period For Digital Display: 400 ms. Analog Outputs: Two analog outputs are provided on mainframe rear panel; 1 V per 10,000 counts and 1 V per 100 counts of the digital display. Power Requirements: 90 to 110 V, 105 V to 125 V, 180 to 220 V, or 210 to 250 V, 50 to 60 Hz, 30 VA. max. Dimensions and Weights: Mainframe: 3-1/2" half rack, overall bench size 100 mm high x 217 mm wide by 308 mm deep (4" x 8-1/2" x 12-1/8"). Weight: 2.9 kg (6 lb., 6 oz.) Remote Head: 102 mm high x 162 mm wide x 165 mm deep (4" x 6-3/8" 6-1/2"), exclusive of connectors. Weight: 4.2 kg (1 lb., 3 oz.) Interconnect Cable: 4 ft. long. Weight: 0.6 kg (1 lb., 3 oz) For Domestic Customers: Packaging, handling, and order processing included in shipping in all domestic shipments as quoted by the shipping calculator. For International Customers there is a $25.00 minimum for packaging, handling, and order processing. International shipping to be determined by destination. Prior to shipment I will need to know the following information (filled out on a form that I will send you) for International Customers or Packages/Freight being Forwarded internationally. International customers may also be subject to a freight forwarder form if applicable.: (1) Are you the end-user of this item? (2) If you are not the ultimate end-user of the item, please state the ultimate end user's name. (3) What is the ultimate country destination? 07/30/13

Price: 1999.99 USD

Location: Phoenix, Arizona

End Time: 2024-11-29T23:29:29.000Z

Shipping Cost: N/A USD