Fluke 845AB High Impedance Voltmeter
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Fluke 845AB high impedance voltmeter with input range 1 µV to 1000V DC, ±2% accuracy, and exceptional noise performance for precision DC voltage measurements.
Product details
| Model | 845AB |
| Manufacturer | Fluke |
| Category | Multimeters & DMMs |
| Availability | Made to order |
Description
Overview
The Fluke 845AB is a precision digital voltmeter designed for laboratory measurement of direct current (DC) voltages ranging from 1 microvolt to 1000 volts. It combines high input impedance with exceptionally low noise to deliver accurate, stable readings even for very small voltage signals, making it essential for research, development, and calibration applications.
Key Features
- Wide measurement range from 1 µV to 1000V DC
- Precision accuracy at ±(2% end scale + 1 µV) specification
- High input impedance (100 MΩ and 10 MΩ on select ranges) to minimize circuit loading
- Extremely low noise specifications (0.20–0.25 µV maximum) for stable, reliable readings
- Fast response time with 90% settling in 1.5 seconds or less depending on selected range
Applications
- Precision DC voltage measurements in laboratory and field environments
- Research and development testing of sensitive circuits and components
- Calibration and metrology standards verification
- Transducer and sensor output measurement
- Low-level signal characterization and analysis
Specifications
| Input Range | 1 µV to 1000V DC |
| Accuracy | ±(2% end scale + 1 µV) |
| Input Impedance | 100 MΩ (300 mV and above), 10 MΩ (100 mV and below) |
| Maximum Noise | 0.20–0.25 µV depending on range |
| Response Time | 1.5–5 seconds to 90% depending on range |
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Fluke 845AB High Impedance Voltmeter
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