SSI Technologies Application Note PS-AN4 MediaGauge (Model MG-9V) Digital Pressure Gauge Product Overview Product Description The MediaGauge Model MG-9V digital pressure gauge is a stand alone 9V battery operated multi-functional digital pressure gauge. The MG-9V digital pressure gauge contains a media isolated piezoresistive pressure sensing element, signal conditioning circuitry for temperature and calibration compensation, a 304L stainless steel input pressure port and a LCD back lit display. The MG-9V digital pressure gauge has an accuracy of 0.25 % full scale. A battery power saver mode is incorporated into the MG-9V to automatically shut the LCD display off after 5 minutes prolonging the batterys life. The MediaGauge MG-9V digital pressure gauge comes MediaGauge Model MG-9Vand Model MG-9V-F standard with a variety of keypad operated functions Product Features multiple pressure unit display reading (PSI, BAR or MPA) memory storage of maximum peak pressure reading and Superb Accuracy: 0.25% Full Scale zero adjustment. A Ft of Head pressure measurement Pressure Ranges: 5, 15, 50, 75, 100, 200, 300, 500, display is available as an option for the MG-9V model. 750, 1000, 1500, 2000, 3000, 5000 PSI The MediaGauge MG-9V digital pressure gauge is made Keypad operated functions: Auto zero and peak hold of all laser-welded 304L & 316L stainless steel for optimal media isolation and usage in a wide variety of media. These Operating Temperature: -10C to 60C compact 3 inch, robust gauges measure pressures from Storage Temperature: -20C to 85C 5 PSI to 5000 PSI and are well suited for a variety of industrial and commercial applications such as refrigeration, Typical Applications: General Purpose, Test, Process compressors, pumps, hydraulics, pneumatics and waste Control, MRO, Water, Compressors, Refrigeration Fuel water. Cells Pumps Hydraulics Spraying Systems Pneumatics Flow Robotics Agriculture Hydrogen The MediaGauge MG-9V digital pressure gauge has better accuracy, longer life and standard multiple functions Storage which make it a better choice than mechanical pressure gauges. NIST traceable certificates available NEMA 4X Rating Copyright August 30, 2012 SSI TECHNOLOGIES, INC. SSI Technologies Inc. Controls Division All Rights Reserved 1309 Plainfield Ave. Revision 4 Janesville, WI 53545-0450 Phone: (608)758-1500 Fax: (608)758-2491 www.ssitechnologies.com 1 RoHS SSI Technologies Application Note PS-AN4 MediaGauge (Model MG-9V) Digital Pressure Gauge Product Overview 316L stainless steel diaphragm and is then transferred Chemical Compatibilities: Any gas or liquid through the oil to the silicon sensor. compatible with 304L and 316L stainless steel. For example, Motor Oil, Diesel, Hydraulic fluid, Brake Fluid, Water, Waste Water, Hydrogen, Nitrogen, and Air. Strain gauges (resistive elements) in the silicon sensor are LCD Display Battery Saver Mode: MG-9V used in a Wheatstone Bridge circuit. When the medias automatically powers down after 5 minutes. pressure is applied, the resistivity of the strain gauges changes proportional to the pressure applied. One leg of Multiple Pressure Units: PSI, BAR, MPA (kg/cm) the bridge measures the input pressures port. The other (Optional Ft. of Head available) leg of the bridge is connected to the reference port (vacuum pressure 0 PSI) the input pressure port is compared to. Compact, Robust Package: 3 inches with black ABS Thermoplastic case Since piezoresistive pressure sensors are generally sensitive to changes in temperature, the MediaGauge MG-9V digital pressure gauge uses signal conditioning to Measurement Technology compensate for temperature and calibration. The output In general, pressure measurement technology translates a signal is then converted into one of 3 user selectable forms force from an induced pressure into an electrical quantity. In (select units with the ON/UNIT/OFF button): digital pressure gauges, the electrical quantity is then translated into pressure units and digitally displayed. The SSIs MediaGauge MG-9V digital pressure gauge 1) PSI includes an 304L stainless steel input pressure port, a 2) BAR piezoresistive pressure sensing element, signal conditioning circuitry for temperature and calibration compensation, and 3) MPA (kg/cm) a LCD that displays the pressure measured in either PSI, BAR or MPA (kg/cm) units. The piezoresistive sensing element consists of an oil-filled The MediaGauge MG-9V digital pressure gauge will micro-machined 316L stainless steel convoluted diaphragm display the pressure reading after the ON/UNIT/OFF button and a silicon crystal sensor. The silicon crystal sensor is is depressed. The pressure measurement reading is mounted on a 304L stainless steel housing and laser updated 3 times per second. welded to the diaphragm. Optimal media isolation is achieved when the medias pressure acts directly on the Copyright August 30, 2012 SSI TECHNOLOGIES, INC. SSI Technologies Inc. Controls Division All Rights Reserved 1309 Plainfield Ave. Revision 4 Janesville, WI 53545-0450 Phone: (608)758-1500 Fax: (608)758-2491 www.ssitechnologies.com 2 RoHS