Transmille 8109 is an advanced precision multimeter designed for calibration laboratories, metrology facilities, manufacturers and test departments requiring high-accuracy electrical measurements. With 9 ppm DC voltage accuracy, direct current measurement up to 30 A, resistance measurement up to 1 GΩ and frequency measurement up to 1 MHz, the 8109 combines excellent metrological performance with broad measurement capability.

The Transmille 8109 is part of the current 8100 Series Precision Multimeter family. It provides DC and AC voltage, DC and AC current, resistance and frequency measurement in a single laboratory-grade instrument. Transmille specifies DC voltage measurement from 0 to ±1025 V with accuracy down to ±9 ppm and DC current measurement directly up to ±30 A with accuracy down to ±25 ppm.

Unlike many precision multimeters that require external current shunts for higher current measurements, the 8109 provides direct current inputs up to 30 A. This makes it particularly attractive for calibration laboratories that regularly calibrate electrical calibrators, current sources, power supplies, current meters and other precision electrical equipment.

The instrument provides selectable resolution from 4.5 to 7.5 digits, allowing the operator to balance measurement speed and resolution according to the application.

A full-color display provides direct access to measurement information and advanced mathematical functions. USB, RS232, GPIB and LAN interfaces support integration into automated laboratory systems, while compatibility with Transmille ProCal enables automated calibration workflows.

At europascal, we provide professional solutions for electrical measurement and calibration technology. The Transmille 8109 is particularly suitable as a high-performance laboratory multimeter for precision measurements and automated calibration systems.

For professional calibration and metrological traceability of precision multimeters and other electrical measuring instruments, visit the europascal Calibration Service.

Your Benefits at a Glance

The Transmille 8109 combines precision electrical measurement with wide ranges and advanced laboratory functionality.

Key benefits include:

• Precision laboratory multimeter
• DC voltage accuracy down to 9 ppm
• DC voltage measurement up to ±1025 V
• Direct DC current measurement up to ±30 A
• DC current accuracy down to 25 ppm
• AC voltage measurement up to 1025 V
• AC voltage bandwidth up to 100 kHz
• Direct AC current measurement up to 30 A
• Resistance measurement up to 1 GΩ
• Resistance accuracy down to 20 ppm
• Frequency measurement from 10 Hz to 1 MHz
• Frequency accuracy of 2 ppm ±2 digits
• Selectable 4.5, 5.5, 6.5 and 7.5 digit resolution
• Advanced mathematical functions
• Optimized for precision AC/DC current shunts
• Full-color display
• USB interface
• RS232 interface
• GPIB interface
• LAN interface
• ProCal 6 compatibility
• Automatic uncertainty support in ProCal 6
• Optional 19-inch rack mounting
• Designed for professional calibration laboratories

9 ppm DC Voltage Accuracy

One of the most important characteristics of the Transmille 8109 is its DC voltage performance.

The instrument measures DC voltage from:

0 to ±1025 V

with best accuracy down to:

±9 ppm.

This level of performance makes the 8109 suitable for demanding laboratory measurements and calibration of high-accuracy electrical instrumentation.

Typical applications include measurement and verification of:

• Precision voltage sources
• Multifunction calibrators
• DC calibrators
• Power supplies
• Reference sources
• Process calibrators
• High-accuracy electrical instruments

The wide voltage range allows low-level precision signals and high-voltage outputs to be evaluated using the same multimeter.

Direct Current Measurement up to 30 A

A particularly useful feature of the Transmille 8109 is its ability to measure current directly up to:

±30 A DC.

Transmille specifies best DC current accuracy of:

±25 ppm.

Direct high-current measurement reduces the need for external current shunts in many calibration applications.

This simplifies the measurement setup and removes an additional component that would otherwise contribute to the overall measurement uncertainty.

Typical applications include calibration and verification of:

• Current calibrators
• Current sources
• Multifunction calibrators
• Power supplies
• Current meters
• Laboratory instrumentation

For laboratories with a significant electrical calibration workload, the direct 30 A capability is a major practical advantage.

AC Voltage Measurement

The Transmille 8109 provides AC voltage measurement from approximately:

20 mV to 1025 V

with a frequency range extending from:

10 Hz to 100 kHz.

The best AC voltage accuracy is approximately:

±0.05%.

This wide range enables the instrument to evaluate AC outputs from electrical calibrators and other precision sources.

The input design also provides high input impedance on lower AC voltage ranges, which is particularly useful when working with precision current shunts.

AC Current up to 30 A

The Transmille 8109 also provides direct AC current measurement up to:

30 A.

Best AC current accuracy is specified at approximately:

±0.08%.

Together with the direct DC current capability, this provides a broad current measurement workload without requiring an external shunt for many conventional calibration tasks.

Resistance Measurement up to 1 GΩ

Resistance measurement is another major capability of the Transmille 8109.

The instrument covers resistance values up to:

1 GΩ

with best accuracy down to:

±20 ppm.

This broad resistance range makes the 8109 suitable for calibration and verification of:

• Resistance standards
• Decade resistance boxes
• Multifunction calibrators
• Precision resistors
• Resistance sources
• Digital multimeters

The combination of voltage, current and resistance measurement allows the 8109 to cover a substantial portion of a typical electrical calibration laboratory workload.

Frequency Measurement up to 1 MHz

The Transmille 8109 measures frequency from:

10 Hz to 1 MHz.

The current extended specification lists a one-year frequency accuracy of:

2 ppm ±2 digits.

Depending on the selected gate and frequency range, resolution extends down to the microhertz region at low frequencies.

This capability is useful for checking frequency outputs from:

• Multifunction calibrators
• Function generators
• Frequency sources
• Process calibrators
• Signal generators

Selectable Measurement Resolution

The Transmille 8109 provides selectable resolution settings of:

4.5 digits

5.5 digits

6.5 digits

and:

7.5 digits.

Different filter speeds can be selected according to the required balance between measurement speed, stability and resolution.

At lower resolution settings, faster measurement speeds are available.

At 7.5-digit resolution, longer integration and filter times allow improved stability for precision laboratory measurements.

Designed for Metrology Laboratories

The Transmille 8109 was developed specifically with metrologists and calibration laboratories in mind.

Its input electronics are optimized for precision measurements, while the instrument provides immediate access to measurement information and mathematical functions.

This makes the 8109 suitable not only as a high-performance digital multimeter but also as a laboratory reference instrument for automated and manual calibration systems.

Typical users include:

• Accredited calibration laboratories
• Industrial calibration laboratories
• Electrical manufacturers
• Research laboratories
• Quality assurance departments
• Service laboratories
• Metrology institutes

Optimized for Precision Current Shunts

The Transmille 8100 Series has been optimized for use with precision AC/DC current shunts.

Parameters associated with the current shunt can be entered into the instrument, allowing the multimeter to calculate the applied current directly.

The system simultaneously evaluates voltage and frequency and can apply corrections based on the AC/DC difference of the shunt at the measured frequency.

This simplifies precision AC current measurements where external reference shunts are required.

High AC Input Impedance

For lower AC voltage ranges, the 8100 Series provides high input impedance.

This is particularly useful when measuring the output of precision current shunts because it reduces loading effects.

Transmille specifically highlights this design as a way of reducing the need for additional buffer amplifiers and therefore reducing potential sources of measurement error.

Advanced Mathematical Functions

The Transmille 8109 provides advanced mathematical functions for laboratory measurements.

These functions help technicians and metrologists evaluate measurement data directly at the instrument rather than transferring every reading to external calculation software.

The 8100 platform is designed to provide immediate feedback during precision measurement applications.

This can improve efficiency during manual calibration and laboratory analysis.

Full-Color Display

The Transmille 8109 uses a full-color display designed for clear presentation of measurement values and additional measurement information.

The display concept provides more information than a conventional numerical multimeter display and supports the advanced functions of the 8100 Series.

This is particularly useful in laboratory applications where measurement stability and additional statistical information need to be evaluated.

Comprehensive Communication Interfaces

The Transmille 8109 provides several communication interfaces as standard:

• USB
• RS232
• GPIB
• LAN

These interfaces allow the multimeter to be integrated into automated calibration systems and existing laboratory environments.

GPIB compatibility is particularly useful in established calibration laboratories with automated systems based on traditional IEEE-488 instrumentation.

LAN and USB provide convenient integration into modern laboratory networks and PC-based calibration systems.

Remote Command Compatibility

The 8100 Series provides an advanced remote command set and includes emulation modes for commonly used remote command languages.

This allows the multimeter to be integrated more easily into existing calibration systems and legacy metrology software.

For laboratories replacing an older precision multimeter, this can reduce the amount of software redevelopment required.

ProCal 6 Compatibility

The Transmille 8109 is supported by Transmille’s ProCal 6 calibration software.

Transmille’s current support information lists the 8109 as directly supported in ProCal 6 and confirms support for automatic uncertainties.

This allows the multimeter to form part of an automated calibration workstation.

Measurement values can be acquired directly by the calibration software, reducing manual data entry and helping to improve calibration throughput.

Automated Calibration Systems

The combination of remote interfaces, command compatibility and ProCal integration makes the Transmille 8109 particularly suitable for automated electrical calibration.

A typical system can combine:

• Transmille precision multimeter
• Multiproduct calibrator
• Switching equipment
• Calibration software
• Device under test

Automating recurring calibration procedures can reduce operator workload and improve consistency.

Measurement Uncertainty and Specifications

Transmille provides detailed extended specifications for the 8109.

These include absolute uncertainty and relative performance data for different calibration intervals and temperature conditions.

Transmille states that its absolute uncertainties are presented at approximately 95% confidence, k = 2, which is particularly useful for ISO/IEC 17025 calibration laboratories performing measurement uncertainty calculations.

This detailed specification structure allows metrologists to select appropriate performance data for the actual calibration application.

Transmille 8109 Compared with 8104

The Transmille 8100 Series currently includes two principal performance levels: the 8109 and 8104.

The 8109 provides:

9 ppm DC voltage accuracy

25 ppm DC current accuracy

20 ppm resistance accuracy

and direct current measurement up to 30 A.

The higher-performance 8104 provides:

4 ppm DC voltage accuracy

7 ppm DC current accuracy

and:

8 ppm resistance accuracy.

The 8104 additionally includes a dedicated low-noise electrometer input, resistance measurement up to 1 TΩ, picoamp-level current capability and rear-panel inputs.

The Transmille 8109 therefore provides the core high-performance multimeter functions of the 8100 Series without the additional electrometer functionality of the 8104.

Optional Rack Mounting

For integration into permanent or mobile calibration systems, Transmille offers an optional:

19-inch rack mount system.

This allows the 8109 to be installed in automated calibration racks or laboratory workstations.

Transport cases and other accessories are also available for laboratories that need to move the instrument between locations.

Typical Applications

The Transmille 8109 is suitable for a wide range of precision electrical measurement applications, including:

• Digital multimeter calibration
• Multiproduct calibrator verification
• Precision voltage measurement
• Precision current measurement
• Direct high-current measurement
• Resistance standard measurement
• Decade box calibration
• Frequency measurement
• Current shunt measurements
• Electrical reference measurements
• Automated calibration systems
• Research and development
• Production testing
• ISO/IEC 17025 calibration laboratories

Technical Highlights

Why Choose the Transmille 8109?

The Transmille 8109 combines high precision, wide measurement ranges and direct high-current capability in a laboratory-grade digital multimeter.

Its 9 ppm DC voltage accuracy provides the performance required for demanding electrical calibration applications, while direct current measurement up to 30 A reduces the need for external current shunts in many conventional measurements.

Resistance measurement up to 1 GΩ, AC voltage up to 1025 V and frequency measurement up to 1 MHz provide broad workload coverage.

Selectable resolution from 4.5 to 7.5 digits allows measurement speed and stability to be adapted to the individual application.

USB, RS232, GPIB and LAN interfaces provide straightforward integration into automated laboratory systems. ProCal 6 support, including automatic uncertainty functionality, makes the 8109 particularly suitable for efficient automated calibration workflows.

For laboratories requiring even greater accuracy, electrometer functionality and resistance measurements into the teraohm range, the Transmille 8104 provides the higher-performance alternative within the 8100 Series.

At europascal, we provide professional solutions for electrical measurement and calibration technology and can assist you in selecting the appropriate Transmille precision multimeter, calibrator and software for your laboratory.

For professional calibration and metrological traceability of the Transmille 8109 and other electrical measuring instruments, visit the europascal Calibration Service.

Manufacturer information about the Transmille 8109 is available on the official Transmille 8100 Series website.