Product Overview

BluVac+ Professional User’s Guide
15
Q. How do I use the leak rate indicator?
A. The leak-rate indicator is especially useful for system diagnostics during a rise-time test. If the
indicated leak rate is stable and constant, this usually indicates a physical vacuum leak. If the leak
rate is stable, but decreases as the pressure rises, this usually indicates evaporating moisture or
outgassing. If the leak rate is unstable (bouncing between different numbers), this usually indicates
liquid water boiling off inside the system. Since the resolution of the BluVac+ Pro is so high, it may be
difficult to achieve a zero leak-rate. This is not a problem as long as the system meets the
manufacturer’s recommended vacuum rise-time performance.
Q. Why does the ambient temperature indicator show a different temperature than my room
thermometer?
A. The ambient temperature indicator actually measures the temperature of the metal sensor housing
and the gas contained within the sensor. This temperature may be a few degrees different than room
temperature. The temperature sensor itself is inherently accurate within 0.2°F (0.1°C) and requires
no calibration.
Q. My BluVac+ Pro reads a different pressure than my other vacuum gauge from another
manufacture. Which gauge is correct?
A. Unlike all other micron gauges, the BluVac+ Pro’s accuracy is independent of temperature and
pressure. Therefore, you can be confident that the BluVac+ Pro’s reading is correct. Other gauges
are calibrated at a specific temperature and pressure (i.e. 500 microns and 77°F (25°C)). The
accuracy of those gauges is necessarily derated when operated at pressures and temperatures
different than the calibration values.
Q. I’ve started a Rise Time Test Program, but the clock doesn’t run. Why?
A. For consistency of rise time testing, the Rise Time Clock does not begin counting until the
pressure has risen above the Evacuation Target Pressure. On a very clean, dry, and tight volume,
this may not happen before a result is achieved. Regardless, a result ensures that the
pressure would not have risen between the Evacuation Target Pressure and the Rise Time Target
Pressure within the allowed Rise Time Target Time Period.
Q. I am still having problems using the BluVac+ Pro and/or understanding the readings it is giving me.
What should I do?
A. Please, contact us! Use our website at www.accutools.com or call us at [phone] between
9:00AM and 5:30PM EST. We will be happy to help.