Transmille 8100 Specifications
8100 SERIES
ADVANCED 8.5 DIGIT
MULTIMETER
8104
EXTENDED SPECIFCATIONS
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Transmille 8104 Multimeter Extended Specications
Interpreting Specifications
Transmille have taken great care over presenting the extended specicaiton in a manner that is easy to
read while including a high level of detail
Transmille specify specication as both Absolute and Relative specication, with varying calibration
intervals from 90 Days to 2 Years
By ‘Absolute Uncertainties’ this means that all internal components of the multimeter have been
compensated for. is includes staiblity, line voltage variation, temperature and humidity as well as the
uncertainty of calibration as performed by Transmille Ltd. Two specications are provided, the rst for use
at temperatures 1°C from calibration temperature, the second for use at temperatures 3°C from calibration
temperature. e term ‘Tcal’ has been used to indicate the Temperautre of calibration
is does NOT include external sources of uncertainty such as the leads that are used to connect the
multimeter to sources, nor does it include zero osets that may have been stored.
Relative Accuracy refers to the stability of the instrument itself, without any external factors with the
exception of temperature variation. is means that no allowance is made for the uncertainty of calibration.
During re-calibration, the ‘Absolute Uncertainties’ should be used for verication of the instrument. If
the calibration laboratory performing the calibration oers better uncertainties than those of Transmille the
published absolute uncertianties may be used, or new absolute uncertainties can be calculated by combining
the relative specication and uncertainty of calibration.
If the calibration laboratory has LARGER uncertainties than that of Transmille, new absolute
uncertainties must be calculated for the instrument as the absolute specication in this datasheet will no
longer be valid.
All of Transmille’s Absolute Uncertainty specications are presented at a condence interval of 95%,
k=2
is is for ease of use in an accredited laboratory where other uncertainty contributions are likely to
be calculated or k=2, minimising the requirement for allowing for dierences in condence intervals
Version 1.0
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Transmille 8104 Multimeter Extended Specications
DC Voltage
Range Specifications
Range Full Scale Resolution Input Impedance
100 mV 120,000,000 1nV > 10 GOhms
1 V 1.200,000,00 10nV > 10 GOhms
10 V 12.000,000,0 100nV > 10 GOhms
100 V 120.000,000 1µV 10 MOhms, 1%
1000 V 1.050,000,00 10µV 10 MOhms, 1%
Accuracy Relative To Calibration Standards
Range 90 Day 180 Day 1 Year 2 Year
± (ppm Reading + ppm Range)
100 mV 3.8 + 1.7 4.3 + 1.7 4.8 + 1.7 7.0 + 1.7
1 V 3.0 + 0.6 3.5 + 0.6 3.9 + 0.6 5.5 + 0.6
10 V 3.0 + 0.6 3.5 + 0.6 3.9 + 0.6 5.5 + 0.6
100 V 4.6 + 0.8 5.2 + 0.8 5.8 + 0.8 8.0 + 0.8
1000 V 4.6 + 1.2 5.2 + 1.2 5.8 + 1.2 8.0 + 1.2
Absolute Uncertainty (95% Confidence)
Range 1 Year
Tcal ± 1°C Tcal ± 3°C
± (ppm Reading + ppm Range)
100 mV 7.5 + 1.7 9.0 + 1.7
1 V 4.9 + 0.6 6.4 + 0.6
10 V 5.4 + 0.6 6.8 + 0.6
100 V 7.3 + 0.8 9.5 + 0.8
1000 V 7.3 + 1.2 9.5 + 1.2
Notes :
1) Specications valid only when Null veried/performed. Errors caused by thermals on external leads can be
greater than 5uV which equates to 5ppm at the 1V level
2) Specications apply for default lter settings.
3) All DC Voltage ranges are available at both Front and Rear terminals.
4) Input protection of 1,100V RMS is provided on all ranges
Version 1.0
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Transmille 8104 Multimeter Extended Specications
DC Current
Range Specifications
Range Full Scale Resolution Input Impedance Input Terminals
100 µA 120,000,00 10pA 10 kOhms Front & Rear
1 mA 1.200,000,0 100pA 1 kOhms Front & Rear
10 mA 12.000,000 1nA 100 Ohms Front & Rear
100 mA 120,000,00 10nA 10 Ohms Front & Rear
1 A 1.200,000,0 100nA 0.5 Ohms Front & Rear
10 A 12.000,000 1µA 10 mOhms Front
30 A 30.500,00 10µA 10 mOhms Front
Accuracy Relative To Calibration Standards
Range 90 Day 180 Day 1 Year 2 Year
± (ppm Reading + ppm Range)
100 µA 5.5 + 4 6 + 4 7 + 4 10 + 4
1 mA 5.5 + 4 6 + 4 7 + 4 10 + 4
10 mA 7.2 + 4 8.1 + 4 9 + 4 13 + 4
100 mA 24 + 6 27 + 6 30 + 6 42 + 6
1 A 120 + 13 135 + 13 150 + 13 210 + 13
10 A 290 + 35 320 + 35 360 + 35 500 + 35
30 A 390 + 145 440 + 145 490 + 145 690 + 145
Total Accuracy (95% Confidence)
Range 1 Year
Tcal ± 1°C Tcal ± 3°C
± (ppm Reading + ppm Range)
100µA 11 + 4 14 + 4
1mA 11 + 4 14 + 4
10mA 13 + 4 16 + 4
100mA 36 + 6 47 + 6
1A 174 + 13 234 + 13
10A 418 + 35 561 + 35
30A 569 + 145 764 + 145
Notes :
1) Specications valid only when Null veried/performed
2) Specications apply for default lter settings.
3) Current ranges up to 1A are available at both Front and Rear Terminals. Current above 1A on high current
terminals only
4) 1A Fuse provided on rear panel for protection of 1A range and below
Version 1.0
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Transmille 8104 Multimeter Extended Specications
DC Current (Electrometer)
Range Specifications
Range Full Scale Resolution Input Impedance
10 nA 12.000,00 0.001pA Virtual Ground
100 nA 120.000,0 0.01pA Virtual Ground
1 µA 1.200,000 0.1pA Virtual Ground
10 µA 12,000,00 1pA Virtual Ground
Accuracy Relative To Calibration Standards
Range 90 Day 180 Day 1 Year 2 Year
± (ppm Reading + ppm Range)
10 nA 4000 + 80 4500 + 80 5000 + 80 7000 + 80
100 nA 1440 + 34 1620 + 34 1800 + 34 2520 + 34
1 µA 160 + 17 180 + 17 200 + 17 280 + 17
10 µA 24 + 10 27 + 10 30 + 10 42 + 10
Total Accuracy (95% Confidence)
Range 1 Year
Tcal ± 1°C Tcal ± 3°C
± (ppm Reading + ppm Range)
10nA 14227 + 80 15148 + 80
100nA 2454 + 34 3087 + 34
1µA 268 + 17 339 + 17
10µA 40 + 10 50 + 10
Notes :
1) Specications valid only when Null veried/performed
2) Specications apply for default lter settings.
3) Electrometer input provided as shielded BNC connector on front panel for exceptional noise rejection.
Version 1.0
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