SSI Technologies Application Note PS-AN6 MediaGauge (Model MG1-9V) Digital Pressure Gauge Product Overview Product Description The MediaGauge Model MG1-9V is a NEMA 4X rated stand alone 9V battery operated multi-functional digital pressure gauge with a standard input pressure port made of 316L stainless steel which has better pitting corrosion resistance in some media, such as seawater. The MediaGauge MG1-9V is well suited for marine applications. The MediaGauge MG1-9V contains a media isolated piezoresistive pressure sensing element, signal conditioning circuitry for temperature and calibration compensation, a pressure port and a LCD back lit display. The MG1-9V has an accuracy of 1.0% full scale and is a lower cost alternative in the SSI MediaGauge family of digital pressure gauges. The MediaGauge MG1-9V comes standard with a variety of keypad operated functions multiple pressure unit display reading (PSI, BAR or MPA) memory storage of maximum peak pressure reading and zero adjustment. The MediaGauge MG1-9V is made of all laser-welded 316L stainless steel for optimal media isolation and usage in a wide M e dia Ga uge Model MG1-9V variety of media and corrosion or oxidation resistant applications. These compact 2 inch, robust gauges measure pressures from Product Features 5 PSI to 5000 PSI and are well suited for a variety of industrial and Accuracy: 1.0 % Full Scale commercial applications such as marine, refrigeration, compressors, pumps, hydraulics, pneumatics and waste water. Pressure Ranges: 5, 30, 100, 200, 500, 1000, 3000, 5000 PSI The MediaGauge MG1-9V digital pressure gauge has better accuracy, longer life and standard multiple functions which make it a better choice than mechanical pressure gauges. Keypad Operated Functions: Auto zero and peak hold Operating Temperature: -10C to 60C SSI TECHNOLOGIES, INC. Controls Division Copyright April 17, 2018 3200 Palmer Drive SSI Technologies Inc. Janesville, WI 53548-5011 All Rights Reserved Revision 4 Phone: (608)758-1500 Fax: (608)758-2491 1 SSI Technologies Application Note PS-AN6 MediaGauge (Model MG1-9V) Digital Pressure Gauge Product Overview Storage Temperature: -20C to 85C Measurement Technology Typical Applications: General Purpose, Test, Process Control, MRO, Water, Compressors, Refrigeration Fuel In general, pressure measurement technology translates a Cells Pumps Hydraulics Spraying Systems force from an induced pressure into an electrical quantity. In digital pressure gauges, the electrical quantity is then Pneumatics Flow Robotics Agriculture Hydrogen translated into pressure units and digitally displayed. Storage NIST traceable certificates available The SSIs MediaGauge MG1-9V digital pressure gauge includes an 316L stainless steel input pressure port, a NEMA 4X Rating piezoresistive pressure sensing element, signal conditioning circuitry for temperature and calibration compensation, and Chemical Compatibilities: Any gas or liquid a LCD that displays the pressure measured in either PSI, compatible with 316L stainless steel. For example, Sea BAR or MPA (kg/cm) units. Water, Salt Water, Motor Oil, Diesel, Hydraulic fluid, Brake Fluid, Water, Waste Water, Hydrogen, Nitrogen, The piezoresistive sensing element consists of an oil filled and Air. micro-machined 316L stainless steel convoluted diaphragm with a silicon crystal sensor. The silicon crystal sensor is LCD Display Battery Saver Mode: MG1-9V automatically powers down after 3 minutes. mounted on a 304L stainless steel housing and laser welded to the diaphragm. Optimal media isolation is Multiple Pressure Units: PSI, BAR, MPA (kg/cm) achieved when the medias pressure acts directly on the 316L stainless steel diaphragm and is then transferred Compact, Robust Package: 2 inches with black ABS Thermoplastic case through the oil to the silicon sensor. Strain gauges (resistive elements) in the silicon are used in a Wheatstone Bridge circuit. When pressure is applied, the resistivity of the strain gauges changes proportional to the pressure applied. One leg of the bridge measures the input pressures port. The other leg of the bridge is connected to the reference port (vacuum pressure 0 PSI) the input pressure port is compared to. SSI TECHNOLOGIES, INC. Controls Division Copyright April 17, 2018 3200 Palmer Drive SSI Technologies Inc. Janesville, WI 53548-5011 All Rights Reserved Revision 4 Phone: (608)758-1500 Fax: (608)758-2491 2