Ametek Crystal XP2i [300PSIXP2I-S2-DL] Digital Pressure Gauge w/ DataLoggerXP Software,  0.02% FS Accuracy, 1/4NPT Male, 300 PSI Gauge.

The Crystal XP2i Series are unlike any other pressure gauges. Their looks, performance, and construction are different from anything else available. Pressure gauges from the XP2i Series are very rugged. Their displays are protected by a hard polycarbonate lens, and their circuitry is mounted in elastomer for shock resistance. The case and sensor are made of stainless steel to provide resistance to corrosion as well as an excellent barrier to emissions from cell phones, two-way radios, and other electrically noisy equipment. The case is gasketed and water resistant per NEMA4 and IP66. A replaceable filter in the sensor keeps out debris. Unlike mechanical gauges, Crystal XP2i Series pressure gauges have the ability to survive large over-pressure events with no change in calibration.The XP2i Series is very easy to use. No menus - just buttons. They can be calibrated via the keypad or the RS232 port. The display backlight is one of the best available on this type of pressure gauge. Combine an XP2i with a pressure controller, and you can calibrate XP2i's automatically.

DataLoggerXP software

The DataLoggerXP software*, in tandem with the XP2i digital pressure gauge with a purchased DataLoggerXP firmware upgrade, forms an integrated data logging solution by collecting, saving and transferring data to a Microsoft Excel spreadsheet. With the XP2i's long battery life, you can record up to 32 000 pressure measurements over an entire year, without the need for external power supplies or battery replacements. Since the XP2i can measure vacuum, you can even capture pressure to vacuum transitions and much more. 

• Change data collection parameters, with or without a computer
• Start and stop multiple collection runs from the keypad
• Record pressure readings at intervals as quick as once per second or as slow as once every 18 hours
• Record the averages, averages and peaks, or just the pressure indication
• Store an indicated pressure by pushing one button
• Save the data files directly into Microsoft Excel spreadsheets, or as comma separated text files
• Free Gauge firmware updates