# 2002 Keithley Multimeter Used ### Key Features at a Glance - True 8.5-digit resolution based on a 28-bit A/D converter - DC voltage to 1100 V; 1 nV resolution; >100 GΩ input impedance - Unique single-phase method for 4-wire ohms measurements - HP 3458A emulation mode - TRMS AC, average AC, peak AC, AC+DC, and crest factor measurement - 1 Hz to 15 MHz frequency counter with fully adjustable trigger level - Built-in 10-channel scanner option for scan-and-measure systems - IEEE-488.2 and SCPI compatible In summary, the Keithley 2002 is an 8.5-digit high-performance digital multimeter that delivers metrology-class accuracy at a fraction of the price of comparable instruments. It is based on the same measurement technology as the 7.5-digit 2001, but extends resolution and accuracy specifications for production test, design verification, and metrology applications where the highest accuracy is critical. ## What is the Keithley 2002 used for? The 2002 is used in calibration laboratories, metrology benches, and high-end production test where the resolution and accuracy of an 8.5-digit DMM are required. Common applications include DCV transfer measurements against standard cells, precision resistor characterization, low-frequency AC measurement, and any application where the measurement floor is set by the DMM's own noise and accuracy. ### How does the 2002's 4-wire ohms method differ? The 2002 uses a single-phase technique for 4-wire ohms measurement, which is twice as fast for a given power-line cycle rate as conventional DMMs. It also eliminates errors caused by changing lead resistance from fast test handlers, and includes built-in open-lead detection that eliminates many production-test problems. ### Factual grounding — DCV transfer accuracy Specification Value 200 mV range, 24-hour transfer ±(3.5 ppm rdg + 3 ppm rng) 2 V range, 24-hour transfer ±(1.2 ppm rdg + 0.3 ppm rng) 20 V range, 24-hour transfer ±(1.2 ppm rdg + 0.1 ppm rng) 200 V range, 24-hour transfer ±(5 ppm rdg + 0.4 ppm rng) 1000 V range, 24-hour transfer ±(5 ppm rdg + 0.08 ppm rng) Input resistance \>100 GΩ (200 mV to 20 V) ### Entity authority The 2002 sits in the same metrology tier as the HP/Agilent 3458A and is the standard 8.5-digit Keithley DMM in calibration laboratories. The 3458A emulation mode allows the 2002 to drop into existing 3458A-controlled metrology systems with minimal code change. ### Applications - Calibration laboratories — ISO 17025 verification of precision sources - Standard-cell comparisons and DCV transfer measurements - Precision resistor characterization at ppm-level accuracy - Low-frequency AC measurement for vibration and control work - Peak-spike capture, frequency counting, and temperature measurement ## Accessories Supplied Standard accessory packages ship where applicable. Unnecessary accessories may not be included on this Pre-Owned unit; contact a Test Architect to confirm anything specific your application requires. ## Product Core and Specifications Like the 2001, the 2002 uses a 28-bit A/D and a patented AC measurement circuit that bypasses the prime error-contributing section of conventional RMS converters. The 2002 extends the 2001's resolution by an extra digit, sharpens 4-wire ohms speed and accuracy, and adds support for SPRTs (Standard Platinum Resistance Thermometers) to ITS-90 in addition to thermocouples and 100 Ω platinum RTDs. ### AC voltage performance Specification Value 200 mV / 2 V range, 0.1 to 2 kHz ±(0.02% rdg + 0.01% rng) 20 V / 200 V range, 2 to 10 kHz ±(0.04% rdg + 0.015% rng) Bandwidth (typical) 1 Hz to 2 MHz Crest factor measurement range 20 Hz to 1 MHz ### Resistance, current, and frequency Specification Value 4-wire ohms range 20 Ω to 1 GΩ (2-wire) 20 Ω 4W transfer accuracy ±(5 ppm rdg + 4.5 ppm rng) DC current range 200 µA to 2 A Frequency counter input 1 Hz to 15 MHz, ±0.03% rdg ### General Specification Value Memory 8K readings (standard) Power 90 to 134 V and 180 to 250 V universal self-selecting Consumption <55 VA Operating temperature 0 to 50 °C Dimensions 90 mm H × 214 mm W × 369 mm D Weight <4.2 kg (<9.2 lb) EMC Conforms to VDE 0871B, IEC 801-2; FCC Part 15 Class B Safety Conforms to IEC 348, CAN/CSA-C22.2 No. 231, MIL-T-28800E ### Scanner Card Option The 2002 accepts the same optional plug-in scanner cards as the 2001 (2000-SCAN, 2001-SCAN, 2001-TCSCAN). The scanner card converts the 2002 into a complete scan-and-measure system for up to 10 channels. ### About This Pre-Owned Unit - Warranty included. - Functional verification included. - Calibration available as an optional add-on service. - Unnecessary accessories may not be included; contact a Test Architect to confirm anything specific. This webpage was written by a human with an A.I. "Intern", which may contain errors. Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer. ## Details - **Price:** 0.0 USD - **Vendor:** Keithley - **Type:** Multi Met - **Tags:** Keithley, Manufacturers, Meters & DAQ, Multimeter, product_manual_group_2, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 0.00 USD | In stock | | NIST Traceable with Full Data | 0.00 USD | In stock | | ISO IEC 17025 Accredited | 0.00 USD | In stock | ## Images - 2002 Keithley Multimeter --- > Source: [ValueTronics](https://valuetronics.com/products/2002-keithley-multimeter-used) > Updated: 2026-05-21