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Description
The 5581 Bridge performs a true auto-balancing procedure to nine
significant digits. As the check proceeds, the bridge steps through an
internal comparison of the transformer’s windings, the results of which
are recorded to track its performance over time.
Another
function of this bridge is its real-time uncertainty analysis program.
In this mode you enter external uncertainty factors such as the
uncertainty of your resistor, and the 5581 combines your information
with its own uncertainties to compute a system uncertainty for your
measurement.
The
optional Windows-control software offers history logging and regression
analysis along with uncertainty analysis and the auto-self-check
feature. The program also calculates standard deviations if you need
them. You can enter coefficients for your SPRT and read temperature
rather than resistance.
Of
course, if you prefer, you can operate the bridge manually. The choice
is yours, but either way you’ll find this to be a great bridge to use.
The DC Advantage
AC Bridges are more susceptible to electrical interference than DC
bridges. Therefore, when AC furnaces are used, DC bridges are preferred.
The likelihood of electrical interference increases at temperatures
above the freezing point of Aluminum (660.323°C),
because the insulation resistance of the furnace and the SPRT decline
significantly. |
