Keysight (Agilent) 34405A Digital Multimeter 5 1/2 Digits
The Keysight 34405A is a 5 1/2 digit digital multimeter offering a wide range of measurement functions, including DC/AC voltage and current, resistance, frequency, and diode test. It features a bright display, user-friendly interface, and solid design for benchtop or field use. Ideal for electronics testing, troubleshooting, and quality control applications.
- Model
- Keysight / Agilent 34405A
- Calibration
- Available on request
- Price
- $450
- Status
- In stock
- RFQ ref
- 34405A
This unit
The Keysight 34405A is a 5 1/2 digit digital multimeter delivering 120,000 counts of resolution for precision DC, AC, resistance, and specialized measurements across R&D, manufacturing, design validation, and educational environments. Built around a dual VFD display, It has simultaneous readings with DC voltage accuracy of 0.025% and supports 16 built-in measurement functions including temperature, capacitance, diode test, and continuity. The instrument accommodates AC and DC current up to 12 A, frequency measurement to 750 V input, and temperature sensing from −80 °C to 150 °C using standard thermistor sensors.
Six integrated math functions
Null, dBm, dB, Min/Max, Limit, and Hold - enable post-measurement data manipulation without external tools.
Technical Specifications
DC Voltage: 100 mV to 1000 V at 0.025% accuracy; 10 MΩ input impedance with <120 pF parallel capacitance. AC Voltage (True RMS): 100 mV to 750 V; 0.2% + 0.1% accuracy (45 Hz–10 kHz); 3 maximum crest factor at full scale; 20 Hz to 10 kHz frequency response. DC Current: 10 mA to 12 A with shunt resistance from 0.1 Ω to 10 Ω across 10 mA to 1.2 A ranges. AC Current (True RMS): 10 mA to 10 A; 0.5% + 0.1% accuracy (45 Hz–1 kHz); 20 Hz to 1 kHz frequency response. Resistance: 2-wire measurement from 100 Ω to 100 MΩ; 0.05% + 0.008% accuracy (100 Ω range with Math Null). Frequency: 100 mV to 750 V measurement range; 0.18% + 0.003% accuracy (<2 Hz ranges). Temperature: −80 °C to 150 °C via 2-wire ohms measurement of 5 kΩ thermistor sensors (YSI 4407). Capacitance: 1 nF to 10,000 µF; 2.0% + 0.8% accuracy (1.000 nF range). Diode Test & Continuity: Diode mode uses 0.83 mA ± 0.2% constant current source with <5 V open circuit voltage; continuity fixed at 10 Ω threshold.Key Features
- Dual VFD display for simultaneous parameter monitoring
- Reading rates to 19 readings/sec (DCV, DCI, ACV, ACI at 4.5 digits); 9 readings/sec for frequency
- USB 2.0 interface with TMC-488.2 compliance for automated testing and data logging
- Industry-standard SCPI command set for remote instrument control
- Shock-absorbing bumpers for field durability
- Compliance with major safety and regulatory standards
Typical Applications
- Component and module validation in design verification workflows
- Production test and incoming component acceptance
- Laboratory measurement and characterization
- Educational electronics and electrical engineering instruction
Compatibility & Integration USB 2.0 connectivity supports Keysight IO Library Suite and DMM Intuilink software for data acquisition, logging, and analysis workflows without additional hardware adapters.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 20 Hz to 10 kHz (AC Voltage) |
| 100 mV to 750 V measurement range for frequency function | Voltage / Current Range | DC Voltage: 100 mV to 1000 V |
| AC Voltage | 100 mV to 750 V |
| DC Current | 10 mA to 12 A |
| AC Current | 10 mA to 10 A |
Keysight / Agilent 34405A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Keysight / Agilent 34405A. Calibration covers DC voltage accuracy at all ranges, AC voltage (True RMS) accuracy at 50 Hz, 1 kHz, and 10 kHz, DC current accuracy, resistance accuracy at all decade ranges, frequency accuracy, and diode test voltage. Fluke 87V and 289 also include capacitance and temperature calibration.. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Keysight / Agilent 34405A faults: blown input fuse, worn input jacks, display segment failure, relay contact wear on bench DMMs. Common faults include worn input jacks (banana socket contact wear on the mA and COM terminals), blown input fuses (especially the 440 mA HRC fuse), and display segment failures. Keithley 2000/2001/2002 bench DMMs commonly develop relay contact wear affecting resistance accuracy after extended service.
Keysight / Agilent 34405A price
This Keysight / Agilent 34405A is listed at $450. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Keysight / Agilent 34405A calibration cost
NIST-traceable calibration for the Keysight / Agilent 34405A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers DC voltage accuracy at all ranges, AC voltage (True RMS) accuracy at 50 Hz, 1 kHz, and 10 kHz, DC current accuracy, resistance accuracy at all decade ranges, frequency accuracy, and diode test voltage. Fluke 87V and 289 also include capacitance and temperature calibration.. Turnaround is 1 to 3 business days after receipt. See full calibration details →
