14 Electronic Balancing Tool EBT720/EBT721 and ProHood PH720/PH721
I/O
The ON/OFF key is used to turn the micromanometer on or off.
The BACKLIGHT key turns the display’s backlighting on and off. Use backlighting only when working
in areas where you cannot read the display with existing light. Backlighting has a significant impact on
battery life.
Common Terms
In this manual there are several terms that are used in different places. The following is a brief
explanation of the meanings of terms.
Sample
A Sample consists of all of the measurement parameters stored each time the SAVE key is pressed, or
after each logging interval has passed. The maximum number of Samples is 1000.
Logging Interval
The Logging Interval is the frequency period that the micromanometer will log readings, when logging is
set to CONTIN (continuous). For example, if logging is set to CONTIN and the logging interval is set to
60 seconds, a Sample can be taken and saved automatically every 60 seconds. Refer to chapter 4 for more
information on continuous data logging.
Test ID
A Test ID consists of a group of Samples. A Test ID can contain up to 1000 Samples. The maximum
number of Test IDs is 255.
Any new Sample will be saved to the current Test ID. You can change the current Test ID at any time to
keep your data organized, refer to instructions in Chapter 4
.
The unit does not allow you to store Samples of different character in the same Test ID. If the READ key
is pressed after changes have been made to the Tool or display units or some other parameter, TEST ID
flashes on the display and a new unused TEST ID is selected.
In addition to the data for each Sample, the statistics that are available to view by TEST ID are:
SUM - The sum of all stored values in that TEST ID. (SUM is only available for hood flow or Diffuser
Flow [flow from pressure and K-Factor])
MINIMUM - The lowest value stored in that TEST ID
MAXIMUM - The highest value stored in that TEST ID
AVERAGE - The SUM divided by the number of Samples
COUNT - The number of Samples in that TEST ID
Once you have collected data in a Test ID, you can send it to a printer or a computer. See instructions for
downloading data in Chapter 4
.
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