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SSI TECHNOLOGIES, INC.
Controls Division
2643 West Court Street
Janesville, WI 53548-5011
Phone: (608)758-1500
Fax: (608)758-2491
3
Copyright November 6, 2008
SSI Technologies Inc.
All Rights Reserved
Revision 3
SSI Technologies – Application Note PS-AN6
MediaGauge™ (Model MG1-9V) Digital Pressure Gauge
Product Overview
Since piezo resistive pressure sensors are sensitive to
changes in temperature, the MediaGauge™ MG1-9V uses
signal conditioning to compensate for temperature and
calibration. The output signal is then converted into one of 3
user selectable forms (select units with the ON/UNIT/OFF
button):
1) PSI
2) BAR
3) MPA (kg/cm²)
The MediaGauge™ MG1-9V will display the pressure
reading after the ON/UNIT/OFF button is depressed. The
pressure measurement reading is updated 3 times per
second.
MediaGauge™ MG1-9V Panel
MediaGauge™ MG1-9V panel has a LCD display and three multi-
functional buttons – ON/UNIT/OFF; LIGHT/P-H (Peak-Held) and
RESET/CLEAR.
The
ON/UNIT/OFF button is used to display the pressure
reading; switch between pressure units (PSI; BAR; and MPA) and
to power down the unit.
To power on the unit: Press the ON/UNIT/OFF button. The
MediaGauge™ MG1-9V has a battery saver mode and will
automatically shut off the display after 3 minutes.
To display the pressure reading in a different pressure unit:
Continue to depress the ON/UNIT/OFF button until the arrow in
the LCD points to the pressure units desired.
To manually power down the unit: Press the ON/UNIT/OFF
button and hold down for 3 seconds until OFF is displayed and
then release the button.
The
LIGHT/P-H (Peak-Hold) button is used to turn the LCD
backlight on/off and to display the maximum peak pressure the
unit has measured.
To turn the LCD backlight on: Press the LIGHT/P-H button once.
To turn the LCD backlight off: Press the LIGHT/P-H button
again.
To see the maximum peak pressure the unit has measured:
Press and hold down the LIGHT/P-H button for 3 seconds. The
maximum pressure reading will be blinking. If the maximum
pressure read was over the unit’s maximum pressure range, o.L
will be blinking on the display.
To return to the current pressure reading: Press the LIGHT/P-H
button and hold down for 3 seconds.
The
RESET/CLEAR button is used to reset the gauge to
whatever pressure is currently applied to the port and to clear the
stored maximum peak pressure reading. Note: The
RESET/CLEAR button only functions when held down for 3
seconds.
To reference your MediaGauge™ digital pressure gauge to the
input port:
Press and hold the RESET/CLEAR button for 3
seconds. The MediaGauge™ MG1-9V will now be reference to
your input port. For example, if you have 20 psi on the display and
then you press and hold the RESET/CLEAR button for 3 seconds
the display will show 0.0 psi. A measurement of 30 psi would then
read as 10 psi on the display.