Ensuring Safety: Precise Pressure Valve Testing with Crystal XP2i
San Luis Obispo, CA – Companies rely on pressure relief and safety valves to safeguard equipment from hazardous pressure spikes. Because of their critical role, testing or calibrating these valves is essential, yet achieving consistent results can be challenging: two technicians may interpret an analog gauge differently.

Crystal’s XP2i Digital Pressure Gauge addresses this issue with a dedicated PSV mode that automates the test. When a valve opens, the gauge senses the pressure drop and instantly displays the peak pressure reached before the drop. The value stays on the screen until cleared, ensuring every technician records the identical figure—down to a thousandth of a psi—eliminating subjective variance.
The XP2i offers three selectable accuracy classes:
- ±0.1 % of reading
- ±0.05 % of full scale
- ±0.02 % of full scale
It covers ranges from vacuum to 15 000 psi and features full temperature compensation from –10 °C to 50 °C. All models are intrinsically safe, meeting ATEX, IECEx, and CSA standards, making them suitable for oil & gas and any environment that demands certified safety.
An optional datalogging upgrade can capture up to 32 000 data points, which can be exported to spreadsheets or protected PDF files—streamlining audit trails and documentation.
About AMETEK STC and Crystal
AMETEK STC designs and supplies precision calibration instruments for temperature, pressure, and process signals under the Crystal and JOFRA brands. Crystal pressure gauges and calibrators are globally recognized for their accuracy, reliability, and ease of use. For more information, visit www.ametekcalibration.com.
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