4.10
How to take measurements
Follow the manufacturer’s operating procedures before operating ultrasonic cleaners: set
the proper degas and temperature settings.
Quick real time scrub-force readings:
The
real time reading
mode allows for a quick estimate of the scrub-force at a particular
point. This is useful for checking scrub-force levels during the process of cleaning
Begin probing the tank with the meter in
real time reading
mode. Notice the fluctuations
in the readings. The readings usually flu 3 psi for most tanks.
Average scrub-force:
For precise scrub-force readings set the meter in
averaged reading
mode. Averaged
reading mode is useful for determining the scrub-force levels of a particular point or the
tanks overall scrub-force output
For a good starting point set the number of samples to 10, and the interval to 1 second.
These settings will average 10 samples over a 10second period.
With the meter still in
averaged reading
mode, take 8 to 10 readings throughout the tank.
Make sure to hold the probe steady while taking each average. Write down each reading.
Then average these readings to get an overall scrub-force value for the tank.
Factors that determine the tanks scrub-force output:
Scrub-force levels can vary by as much as +10psi each time a different set of
measurements is taken.
The factors that determine this variance are:
•
Degas time
•
Tank temperature
•
Part geometry
•
Probe position
Degas
the tank according to the manufacturer’s specifications. The degas time is usually
15-20 minutes
Some tanks have a heat setting so that
temperature
can be controlled. Follow the
manufacturer’s specifications. Usually by the time the tank is degassed, the temperature
has stabilized.
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