The Fluke Calibration 8845A is a high-performance, 6.5-digit precision digital multimeter designed for accurate electrical measurements in calibration laboratories, research facilities, industrial production and automated test systems.
With a basic DC voltage accuracy of ±(0.0035% of reading + 0.0005% of range), the Fluke Calibration 8845A provides reliable measurement performance for demanding electrical applications.
The instrument combines high measurement resolution, extensive measurement functions and advanced graphical analysis capabilities in a compact bench-top design.
Its dual display allows two measurement parameters to be viewed simultaneously, while the integrated TrendPlot, histogram and statistical functions provide valuable information about signal stability and measurement behavior.
The Fluke Calibration 8845A supports DC and AC voltage measurements, DC and AC current measurements, resistance measurements, frequency measurements, continuity testing and diode testing.
With integrated RS-232, IEEE-488 and Ethernet interfaces, the instrument is also suitable for automated measurement systems.
For professional electrical calibration and metrological traceability, visit the europascal Calibration Service.
Your Benefits at a Glance
The Fluke Calibration 8845A combines precision, versatility and convenient operation.
Its main advantages include:
- 6.5-digit measurement resolution
- DC voltage accuracy of ±(0.0035% of reading + 0.0005% of range)
- DC voltage measurement up to 1000 V
- AC voltage measurement up to 750 V
- DC and AC current measurement up to 10 A
- Resistance measurement up to 100 MΩ
- Patented 2 × 4-wire resistance measurement technology
- Frequency measurement up to 300 kHz
- Dual measurement display
- True RMS AC measurement
- Integrated TrendPlot function
- Histogram display
- Statistical analysis functions
- Minimum and maximum value recording
- dB and dBm measurement functions
- Continuity testing
- Diode testing
- Front and rear measurement terminals
- RS-232 communication interface
- IEEE-488 interface
- Ethernet interface
- SCPI command support
- Compatibility with automated test systems
- Compact bench-top construction
- Suitable for calibration laboratories and industrial measurement applications
Ideal for Demanding Electrical Measurements
The Fluke Calibration 8845A is designed for applications requiring high measurement accuracy and excellent resolution.
Typical applications include:
- Electrical calibration laboratories
- Industrial quality assurance
- Research and development
- Electronic component testing
- Production testing
- Automated measurement systems
- Precision resistance measurements
- Voltage reference verification
- Current measurement
- Long-term stability investigations
- Electronic circuit development
The instrument is particularly useful when small measurement deviations must be detected and evaluated.
Its combination of precise electrical measurement functions and graphical analysis capabilities makes it suitable for both routine testing and demanding laboratory applications.
6.5-Digit Measurement Resolution
The Fluke Calibration 8845A features a 6.5-digit display.
This high resolution allows small changes in electrical quantities to be detected.
Depending on the selected measurement function and range, the instrument can resolve very small voltage, current and resistance changes.
For DC voltage measurements, the maximum resolution is:
100 nV
High resolution is especially useful when evaluating voltage references, electronic components and precision measurement circuits.
However, measurement resolution must not be confused with measurement accuracy.
The actual measurement uncertainty depends on the selected measurement range, integration time, environmental conditions and calibration status.
High DC Voltage Accuracy
One of the most important characteristics of the Fluke Calibration 8845A is its high DC voltage measurement accuracy.
The manufacturer specifies a basic one-year DC voltage accuracy of:
±(0.0035% of reading + 0.0005% of range)
The available DC voltage measurement ranges extend from:
100 mV to 1000 V
This makes the instrument suitable for measuring low-level electrical signals as well as higher DC voltages.
Typical applications include:
- Voltage reference measurements
- Precision power supply testing
- Electronic circuit verification
- Industrial voltage measurement
- Calibration of electrical measuring instruments
The specified accuracy depends on the measurement range and the applicable operating conditions.
For accurate measurements, the instrument should be operated within the environmental conditions specified by the manufacturer.
AC Voltage Measurement
The Fluke Calibration 8845A supports True RMS AC voltage measurement.
The AC voltage measurement range extends from:
100 mV to 750 V
The manufacturer specifies a basic AC voltage accuracy of:
±(0.06% of reading + 0.03% of range)
This value applies under the relevant frequency and measurement conditions.
The instrument supports AC voltage measurements over a frequency range extending up to 300 kHz.
The actual accuracy depends on signal frequency, amplitude and waveform characteristics.
True RMS measurement is particularly useful when measuring alternating signals that are not perfectly sinusoidal.
Typical applications include industrial power electronics, laboratory testing and electronic circuit analysis.
DC Current Measurement
The Fluke Calibration 8845A provides precise DC current measurement.
The available measurement ranges extend from:
100 µA to 10 A
The maximum resolution is:
100 pA
The manufacturer specifies a basic DC current accuracy of:
±(0.050% of reading + 0.005% of range)
This makes the instrument suitable for measuring a wide variety of DC currents.
Typical applications include:
- Electronic circuit testing
- Power supply verification
- Industrial current measurement
- Precision current source testing
- Automated production testing
For demanding low-current measurements, the influence of burden voltage, leakage currents and environmental conditions must be considered.
AC Current Measurement
The Fluke Calibration 8845A also supports True RMS AC current measurement.
The AC current measurement ranges extend from:
10 mA to 10 A
The manufacturer specifies a basic AC current accuracy of:
±(0.10% of reading + 0.04% of range)
The specified frequency range for AC current measurement extends from approximately 3 Hz to 10 kHz.
Actual measurement performance depends on the selected range, frequency and signal characteristics.
This functionality is useful for evaluating electrical loads, electronic circuits and industrial measurement systems.
Precision Resistance Measurement
The Fluke Calibration 8845A provides accurate resistance measurement.
The available resistance ranges extend from:
100 Ω to 100 MΩ
The maximum resolution is:
100 µΩ
The manufacturer specifies a basic resistance accuracy of:
±(0.010% of reading + 0.001% of range)
This makes the instrument suitable for precision resistance measurements in laboratories and industrial applications.
Typical applications include:
- Precision resistor verification
- Resistance standard comparison
- Electronic component testing
- Cable resistance measurement
- Contact resistance investigations
For low-resistance measurements, the influence of test lead resistance and contact resistance can become significant.
The Fluke Calibration 8845A provides a special measurement function to reduce these effects.
Patented 2 × 4-Wire Resistance Measurement
The Fluke Calibration 8845A features patented 2 × 4-wire resistance measurement technology.
This function allows four-wire resistance measurements to be performed using only two specially designed test leads.
Conventional four-wire resistance measurements require separate connections for current supply and voltage measurement.
The 2 × 4-wire technique combines these connections in specially designed split-terminal connectors.
This simplifies precision resistance measurement while retaining the advantages of four-wire measurement.
Compatible Kelvin test leads are available as accessories.
The function is particularly useful when measuring low-value resistors and components with limited connection space.
Frequency and Period Measurement
The Fluke Calibration 8845A includes frequency and period measurement functions.
The frequency measurement range extends from:
3 Hz to 300 kHz
The manufacturer specifies a frequency measurement accuracy of:
0.01%
The maximum frequency resolution is:
1 µHz
These functions allow the instrument to measure the frequency and period of suitable electrical signals.
Typical applications include:
- Signal generator verification
- Electronic oscillator testing
- Frequency measurement
- Industrial signal analysis
- Electronic circuit development
The applicable measurement conditions and signal requirements must be considered.
Dual Measurement Display
The Fluke Calibration 8845A features a dual measurement display.
This allows two measurement parameters associated with the same input signal to be displayed simultaneously.
For example, the instrument can display AC voltage and frequency at the same time.
This eliminates the need to switch repeatedly between measurement functions.
The dual display is particularly useful when evaluating signals with several relevant characteristics.
It also simplifies measurement procedures in laboratories and automated test environments.
Graphical TrendPlot Function
The Fluke Calibration 8845A includes an integrated TrendPlot function.
TrendPlot allows measurement values to be displayed graphically over time.
This makes it easier to identify:
- Measurement drift
- Signal instability
- Intermittent faults
- Slow changes in electrical quantities
- Unexpected measurement variations
The function acts as a paperless graphical recorder.
It is particularly useful when investigating long-term signal behavior.
For example, the stability of a voltage source can be monitored without requiring a separate chart recorder.
Histogram Function
The Fluke Calibration 8845A includes a histogram display.
A histogram shows the distribution of recorded measurement values.
This helps users evaluate the variation and stability of an electrical signal.
A narrow distribution indicates relatively small measurement variation.
A wider distribution may indicate increased noise or instability.
Histogram analysis is useful for evaluating measurement repeatability and identifying unexpected fluctuations.
The function provides additional information that cannot be obtained from a single displayed measurement value.
Statistical Measurement Functions
The Fluke Calibration 8845A includes integrated statistical functions.
Available functions include:
- Minimum value
- Maximum value
- Average value
- Standard deviation
These functions help users evaluate a series of measurement values.
Statistical analysis is particularly useful for investigating signal stability and measurement repeatability.
The standard deviation provides information about the dispersion of recorded values.
For calibration applications, statistical results can support the evaluation of repeatability.
However, the complete measurement uncertainty must also include other relevant uncertainty contributions.
dB and dBm Measurement
The Fluke Calibration 8845A supports dB and dBm calculations.
These functions are useful when evaluating electrical signal levels.
The dB function expresses a ratio between two values on a logarithmic scale.
The dBm function expresses electrical power relative to 1 mW, based on the configured reference impedance.
These functions simplify measurements in electronic development and signal analysis.
Continuity and Diode Testing
The Fluke Calibration 8845A provides continuity and diode test functions.
Continuity testing is useful for checking electrical connections and detecting open circuits.
Diode testing allows the forward voltage of semiconductor junctions to be evaluated.
These functions make the instrument suitable for general electronic troubleshooting in addition to precision electrical measurements.
Front and Rear Measurement Terminals
The Fluke Calibration 8845A features measurement terminals on the front and rear panels.
This provides additional flexibility when integrating the instrument into a measurement system.
Front terminals are convenient for manual measurements.
Rear terminals are particularly useful for permanently installed measurement setups and automated test systems.
The selected terminal configuration must be appropriate for the measurement application.
RS-232, IEEE-488 and Ethernet Interfaces
The Fluke Calibration 8845A provides several communication interfaces.
These include:
- RS-232
- IEEE-488
- Ethernet
The instrument supports SCPI commands for remote operation.
It also provides compatibility modes for certain older measurement instruments.
These capabilities make the Fluke Calibration 8845A suitable for integration into automated test environments.
Computer-controlled measurements can improve efficiency and repeatability.
Integration into Automated Calibration Systems
The Fluke Calibration 8845A is suitable for automated electrical measurement applications.
Its communication interfaces allow measurement functions and settings to be controlled remotely.
Measurement values can be transferred to compatible software systems for evaluation and documentation.
Typical applications include automated production testing, calibration procedures and laboratory measurement systems.
The instrument can also be integrated into suitable MET/CAL-based workflows when supported by the applicable procedure and communication configuration.
The availability of a compatible instrument driver or procedure must be checked separately.
Technical Highlights
| Specification | Fluke Calibration 8845A |
|---|---|
| Manufacturer | Fluke Calibration |
| Model | 8845A |
| Product type | Precision Digital Multimeter |
| Display resolution | 6.5 digits |
| Display type | Dual VFD dot matrix |
| DC voltage range | 100 mV to 1000 V |
| DC voltage resolution | 100 nV |
| DC voltage accuracy | ±(0.0035% reading + 0.0005% range) |
| AC voltage range | 100 mV to 750 V |
| AC voltage accuracy | ±(0.06% reading + 0.03% range) |
| DC current range | 100 µA to 10 A |
| DC current resolution | 100 pA |
| DC current accuracy | ±(0.050% reading + 0.005% range) |
| AC current range | 10 mA to 10 A |
| AC current accuracy | ±(0.10% reading + 0.04% range) |
| Resistance range | 100 Ω to 100 MΩ |
| Resistance resolution | 100 µΩ |
| Resistance accuracy | ±(0.010% reading + 0.001% range) |
| Resistance measurement | 2-wire and 4-wire |
| Special resistance function | 2 × 4-wire |
| Frequency range | 3 Hz to 300 kHz |
| Frequency accuracy | 0.01% |
| Continuity test | Yes |
| Diode test | Yes |
| TrendPlot | Yes |
| Histogram | Yes |
| Statistical functions | Yes |
| dB and dBm | Yes |
| Communication interfaces | RS-232, IEEE-488, Ethernet |
| Remote programming | SCPI |
| Front and rear terminals | Yes |
| Weight | Approximately 3.6 kg |
| Dimensions | Approximately 88 × 217 × 297 mm |
| Safety classification | CAT I 1000 V, CAT II 600 V |
| Manufacturer warranty | Originally 3 years |
The accuracy values shown are basic manufacturer specifications. The applicable measurement range, frequency, environmental conditions and calibration interval must be considered.
Fluke Calibration 8845A or 8846A?
The Fluke Calibration 8845A and 8846A are both 6.5-digit precision digital multimeters.
However, they differ in several important measurement functions and specifications.
| Specification | Fluke Calibration 8845A | Fluke Calibration 8846A |
|---|---|---|
| Resolution | 6.5 digits | 6.5 digits |
| Basic DC voltage accuracy | 0.0035% | 0.0024% |
| Maximum DC voltage | 1000 V | 1000 V |
| Maximum AC voltage | 750 V | 1000 V |
| Maximum resistance | 100 MΩ | 1 GΩ |
| Maximum current | 10 A | 10 A |
| Frequency measurement | Up to 300 kHz | Up to 1 MHz |
| Capacitance measurement | No | Yes |
| Temperature measurement | No | Yes |
| USB memory port | No | Yes |
| TrendPlot | Yes | Yes |
| Histogram | Yes | Yes |
| Ethernet | Yes | Yes |
The Fluke Calibration 8845A is suitable for demanding electrical measurements involving voltage, current, resistance and frequency.
The Fluke Calibration 8846A provides additional measurement functions and improved DC voltage accuracy.
The correct model should be selected according to the required measurement functions, ranges and accuracy specifications.
Calibration Service by europascal
Regular calibration is essential for maintaining reliable and traceable electrical measurements.
europascal provides professional calibration services for electrical measuring instruments and calibration equipment.
The Fluke Calibration 8845A can be calibrated at defined measurement points to verify its performance against the manufacturer’s specifications.
Relevant calibration quantities include:
- DC voltage
- AC voltage
- DC current
- AC current
- Resistance
- Frequency
When evaluating measurement uncertainty, several contributions must be considered.
These may include:
- Reference standard calibration uncertainty
- Measurement repeatability
- Instrument resolution
- Temperature effects
- Measurement drift
- Frequency dependence
- Connection and contact effects
The complete measurement uncertainty must be evaluated according to the applicable calibration procedure.
For professional electrical calibration and metrological traceability, visit the europascal Calibration Service.
Why Choose the Fluke Calibration 8845A?
The Fluke Calibration 8845A combines high measurement accuracy with extensive electrical measurement capabilities.
Its 6.5-digit resolution and DC voltage accuracy of 0.0035% make it suitable for demanding laboratory and industrial applications.
The instrument provides precise voltage, current, resistance and frequency measurements.
Its patented 2 × 4-wire resistance measurement technology simplifies accurate resistance testing.
The dual display allows two measurement parameters to be viewed simultaneously.
Integrated TrendPlot, histogram and statistical functions provide valuable information about measurement stability and signal behavior.
RS-232, IEEE-488 and Ethernet interfaces allow integration into automated measurement systems.
The compact bench-top design makes the instrument suitable for laboratories, production facilities and research environments.
For users requiring a reliable precision digital multimeter with advanced analysis capabilities, the Fluke Calibration 8845A remains a capable measurement solution.
europascal supports customers with professional electrical measurement equipment, technical advice and calibration services.
Typical Applications for the Fluke Calibration 8845A
Typical applications include:
- Electrical calibration laboratories
- Precision voltage measurement
- Precision current measurement
- Resistance standard verification
- Electronic component testing
- Research and development
- Industrial quality assurance
- Production testing
- Automated test systems
- Power supply verification
- Electronic circuit troubleshooting
- Frequency measurement
- Long-term stability analysis
- Measurement repeatability investigations
- Electrical metrology
The combination of high resolution, accurate measurement functions, graphical analysis and remote communication makes the Fluke Calibration 8845A a versatile instrument for professional electrical measurement applications.
Find more Fluke Calibration products here.
Manufacturer information for the Fluke Calibration 8845A can be found on the official Fluke website.
