Test - Fluke 893 A Differential Voltmeter
The Fluke 893A Differential Voltmeter is a precision standard for verifying and calibrating other voltmeters in the System. It can additionally, store precise measurement and display the difference between the stored or preset value and an unknown value. It is extremely precise and holds stored value until it is reset.
The user manual descibes it’s theory of opoeration and use.
The 893 A as a Lab Referance Standard
The Fluke 893A AC-DC Differential Voltmeter is a versatile instrument that provides conventional or differential measurements of AC voltages from 1 mV to 1100 V and DC voltages from 10 µV to 1100 V12. Here are some of its uses and how it can be used as a reference standard in an audio testing lab:
High Precision Measurements: The Fluke 893A can measure AC and DC voltages with high precision, making it ideal for testing and calibrating audio equipment12.
Reference Standard: The Fluke 893A combines the advantages of a precision high voltage reference with those of battery-powered operation3. From 0 to ±1100V, this unit directly compares the voltmeter input voltage to the Kelvin Varley divider output voltage by means of a high input impedance null detector3. This makes it a reliable reference standard for calibrating other instruments in an audio testing lab.
Versatile Applications: The Fluke 893A can be used to test and measure alternating current (AC) or direct current (DC) voltage and electric current4. This makes it useful for a wide range of applications in an audio testing lab.
Ease of Use: The Fluke 893A comes with an instruction manual that provides detailed information on how to use the device for various applications56.
Conclusions
Tested this meter with a precision DC Power Supply and the Owon DMM. The difference was 0.03 V this level of difference is very good and i am accepting the Fluke as the referance DC voltmeter in the system .
Concluding comments
1. This page was done engineering notebook style – Someday in the future it might be added to and typed up in a spreadsheet
2.This is a current system ‘Standard’ subject to revision.
Audio Electronics Lab Pages
Audio Electronics Lab
And as always – There is :
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