Instantel 716A0401, Руководство оператора

Страница: 27 / 86

Compliance Module
MiniMate Plus Operator Manual
3–7
c. Sandbagging – For Very Low Velocity Levels Only
Use this method for installations where velocity levels remain very low. The sandbag must be of
sufficient size to cover the entire MiniMate Plus or standard transducer and lay on the surrounding
surface around the MiniMate Plus or standard transducer. A sandbag should weigh at least 25
pounds (12 kg) containing sand or 1/4” washed gravel. The optional fastening plate or leveling
plate can be used with this method. Press the
Test key to check your sensors using Sensorcheck.
Press the Start Monitor key and place the sandbag over the MiniMate Plus. Except in Manual
record mode, the MiniMate Plus delays entering the monitoring mode for five seconds to avoid
false triggering caused by placing the sandbag.
3.4. Installing the Microphone
Instantel microphones come with a sectional three foot (one meter) mounting stand. Screw the
three mounting stand pieces together. Locate the mounting stand at the point of interest. Press the
stand into the ground. Check that the stand is firmly positioned and installed upright. Insert the
microphone into the mounting bracket on the top of the stand, and attach the windscreen to reduce
false triggering caused by wind. Point the microphone in the direction of the event. Connect the
microphone cable to the MiniMate Plus. Press the
Test key to check your microphone and the
microphone connection.
NOTE: The microphone windscreen attenuates the microphone reading by 0.2 dB. In most cases,
this does not have a material impact on results.
WARNING : Handle the microphone with care. Dropping the microphone or otherwise subjecting
it to impact may damage the microphone element. The windscreen can help to
protect the microphone, and its use is recommended.
3.5. The MiniMate Plus Keyboard
The integrated keyboard offers convenient access to all the MiniMate Plus operations. The
keyboard has eight keys with additional functions accessed by pressing two keys at the same time.
The MiniMate Plus provides a confirmation beep when a key is pressed. Refer to the keyboard
diagram located in Chapter 1.
3.6. Enter * Key
The Enter * key turns the MiniMate Plus on or off. It also scrolls through the MiniMate Plus
windows, selects windows, and saves your settings.
To turn the MiniMate Plus ON, press and hold the Enter key until an audible beep sounds. To
turn the MiniMate Plus OFF, display the Main Window then press and hold the Enter key until
the display disappears. When turning on the MiniMate Plus, you can display the Main Window
immediately by pressing the
Cancel key after pressing the Enter key. The key also lets you view
previously recorded events while the monitor is in the monitor mode waiting for a trigger.
To view events while monitoring, press the Enter key. Data for the most recently recorded event
appears on the display. Press the Up Arrow key to display other events. Press the Right Arrow
key to display event data for other channels. Press and hold the key until you hear a beep
confirming your key press. If you viewed event data before, the data last displayed appears first
the next time you view events. Channels 5, 6, 7, and 8 require an eight channel monitor.
Event data appears in the following order:
1. Peak Particle Velocity (PPV) and Air Pressure.