# Keysight 34450A 5.5 Digit Dual Display Benchtop Digital Multimeter (Pre-Owned) # Keysight 34450A 5.5 Digit Dual Display Benchtop Digital Multimeter (Pre-Owned) ## Key Features At A Glance - 5.5 digit resolution with 0.015% basic DC voltage accuracy for general industrial and educational measurement needs - Fast reading speed of up to 190 readings per second to support production-line throughput - 11 measurement functions: DC voltage and current, True RMS AC voltage and current, 2- and 4-wire resistance, frequency, continuity, diode test, capacitance, and temperature - Ultra-bright OLED with dual display capability for simultaneous viewing of two measurements - USB 2.0 standard, with GPIB and Serial (RS-232) connectivity available for automated test integration - Up to 50,000 memory points for data logging plus built-in histogram and basic statistical functions - Fluke 45 and Fluke 8808A command compatibility for migration from existing test programs - BenchVue software included for multi-instrument data capture, visualization, and export The Keysight 34450A is a 5.5 digit benchtop digital multimeter that combines a wide range of measurement functions with a fast reading rate and a dual-display OLED interface. The instrument provides 11 measurement functions spanning DC and True RMS AC voltage and current, 2-wire and 4-wire resistance, frequency, continuity, diode test, capacitance, and temperature, with a 0.015% basic DC voltage accuracy specification. The 34450A is positioned for general industrial and educational use, including production-line throughput applications, day-to-day bench measurement, and PC-controlled automated test. Its reading speed of up to 190 readings per second supports manufacturing throughput, and its 50,000-point data logging memory with built-in histogram and statistical functions enables on-instrument data analysis without requiring an external PC for routine review. ## Brand Heritage Keysight Technologies was established in 2014 as a spin-off from Agilent Technologies, which itself was spun off from Hewlett-Packard's test and measurement business in 1999. The 34450A is part of the bench DMM product line that traces back through this corporate lineage. ## Accessories Supplied - Test lead set - Power cord - USB interface cable ## Product Core & Specifications Specification Value DC Voltage Ranges 100 mV, 1 V, 10 V, 100 V, 1000 V Best 1-Year Accuracy (23 °C ± 5 °C) ±(0.015% reading + 0.005% range) Input Impedance 10 MΩ or > 10 GΩ (100 mV / 1 V ranges); 10 MΩ (10 V / 100 V / 1000 V) Measuring Method Sigma delta A-to-D converter Input Protection 1000 V on all ranges (HI terminal) True RMS AC Voltage Ranges 100 mV, 1 V, 10 V, 100 V, 750 V Best 1-Year Accuracy (45 Hz – 10 kHz) ±(0.2% reading + 0.1% range) Frequency Range 20 Hz to 100 kHz Crest Factor Maximum 3:1 at full scale Input Impedance 1 MΩ ± 2% in parallel with < 100 pF Input Protection 750 V rms on all ranges (HI terminal) DC Current Ranges 100 µA, 1 mA, 10 mA, 100 mA, 1 A, 10 A Best 1-Year Accuracy ±(0.05% reading + 0.007% range) Shunt Resistance 1 Ω (10 mA, 100 mA); 90 Ω (100 µA, 1 mA); 0.01 Ω (1 A, 10 A) Input Protection External 0.4 A, 500 V fuse (I terminal); Internal 11 A, 1000 V fuse (10 A terminal) True RMS AC Current Ranges 10 mA to 10 A Best 1-Year Accuracy (45 Hz – 1 kHz) ±(0.5% reading + 0.1% range) Frequency Range 20 Hz to 10 kHz Resistance (2-Wire and 4-Wire) Ranges 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ, 1 MΩ, 10 MΩ, 100 MΩ Best 1-Year Accuracy ±(0.05% reading + 0.005% range) Open Circuit Voltage Limited to < 2.8 V Input Protection 1000 V on all ranges (HI terminal) Frequency Input Range 100 mV to 750 V; 10 mA to 10 A Frequency Range 20 Hz to 300 kHz (voltage); 20 Hz to 10 kHz (current); up to 1 MHz typical at 0.5 V on 100 mV / 1 V ranges 1-Year Accuracy ±(0.02% reading + 3 counts) Measurement Method Reciprocal counting technique Gate Time 0.1 second or 1 period of the input signal Capacitance Ranges 1 nF, 10 nF, 100 nF, 1 µF, 10 µF, 100 µF, 1 mF, 10 mF Best 1-Year Accuracy ±(1% reading + 0.5% range) Temperature Range −80.0 °C to 150 °C (−110.0 °F to 300.0 °F) Probe Type 5 kΩ thermistor probe (YSI 4407) Accuracy Probe accuracy + 0.2 °C / + 0.4 °F Continuity / Diode Test Continuity Threshold 10 Ω fixed Diode Test Range 1.0000 V at 0.5 mA Response Time Continuity: 165 samples/sec; Diode: 190 samples/sec (with audible tone) Reading Rate (Maximum) DCV Fast Mode (USB) 190 readings/sec DCI Fast Mode (USB) 190 readings/sec ACV Fast Mode (USB) 160 readings/sec Triggering and Memory Samples per Trigger 1 to 5,000 (typical), 1 to 50,000 (optional) Trigger Delay 0 to 3600 sec (100 µs step size) Trigger Out 3.3 V logic, negative pulse, approximately 3 µs pulse width Non-Volatile Memory 50,000 readings Math Functions Functions Null, dBm, dB, Min/Max/Avg, Hold, Limit Test Data Log Info, List, Histogram Measurement Noise Rejection CMR (1 kΩ unbalance LO lead) DC: 140 dB; AC: 70 dB NMR (60 Hz / 50 Hz ± 0.1%) Slow (5.5 digit): 60 dB; Medium (4.5 digit): 55 dB; Fast (4.5 digit): 0 dB Interfaces & Programming Remote Interface USB 2.0 Standard, GPIB IEEE-488 (optional), RS-232 Serial Programming Language SCPI-1994.0, IEEE-488.2; Fluke 45 and Fluke 8808A code compatibility Display Display Type Ultra-bright OLED with dual display capability Resolution 5.5 digit General Characteristics Power Supply 100 V / 120 V (127 V) / 220 V (230 V) / 240 V ± 10%, automatically sensed at power-ON AC Line Frequency 45 Hz to 66 Hz; 360 Hz to 440 Hz (100/120 V operation) Power Consumption 45 VA maximum, < 11 W average Operating Temperature Full accuracy 0 °C to 55 °C Operating Humidity Full accuracy to 80% RH for 0 °C to 30 °C; 40% RH for 30 °C to 55 °C (non-condensing) Altitude Up to 3000 meters Storage Temperature −40 °C to 70 °C Measurement Category CAT II 300 V; CAT I 1000 Vdc, 750 Vac rms, 2500 Vpk transient overvoltages; Pollution Degree 2 Shock and Vibration Tested to IEC/EN 60086-2 Warm-Up Time 90 minutes Dimensions (H x W x D), Rack 88.5 mm x 212.6 mm x 272.3 mm Dimensions (H x W x D), Bench 103.8 mm x 261.1 mm x 303.2 mm (4.09 in. x 10.28 in. x 11.94 in.) Weight 3.75 kg (8.27 lb) **Important:** Measurement category rating: CAT II 300 V, CAT I 1000 VDC / 750 VAC rms, 2500 Vpk transient overvoltages, Pollution Degree 2. The current input is protected by an externally accessible 0.4 A / 500 V fuse on the I terminal and an internal 11 A / 1000 V fuse on the 10 A terminal.**Important:** DC current measurements at high currents require settling time of (2.0 x Current^2) seconds; e.g., a 3 A DCI measurement requires 18 seconds of settling time to meet published accuracy.**Important:** Continuity and diode test functions are available in Fast mode only. Continuity threshold is fixed at less than 10 ohms.**Important:** Resistance specifications apply with the NULL function enabled. Without NULL, add 0.2 ohms additional error to 2-wire and 4-wire resistance measurements.**Important:** The I terminal (mA range) is protected by an externally accessible 0.4 A, 500 V rear-panel fuse; the 10 A terminal is protected by an internal 11 A, 1000 V fuse.**Important:** BenchVue software requires a license for unrestricted operation; the no-cost version is limited to one hour per session.Recommended pairing: the E2308A thermistor temperature probe is listed in the datasheet for the 34450A's temperature measurement function, which uses 2-wire resistance measurement of a 5 kΩ thermistor sensor (YSI 4407) with computer conversion. ## About this used unit - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). **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 - 245.0 USD - **Vendor:** Keysight - **Type:** Multimeter - **Tags:** Agilent, Agilent Keysight, Manufacturers, Meters & DAQ, Multimeter, product_manual_group_1, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 175.00 USD | In stock | | NIST Traceable with Full Data | 210.00 USD | In stock | | ISO IEC 17025 Accredited | 245.00 USD | In stock | ## Images - 34450A Keysight Agilent Multimeter --- > Source: [ValueTronics](https://valuetronics.com/products/34450a-agilent-multimeter-used) > Updated: 2026-05-30