Crystal XP3i Digital Pressure Gauge

Overview

The Crystal XP3i Digital Pressure Gauge is an intrinsically safe, high-accuracy field instrument engineered for precision pressure and vacuum measurement in demanding industrial, marine, calibration laboratory, and process safety environments. Based on a temperature-compensated silicon piezoresistive sensing element with digital signal conditioning, the XP3i delivers metrologically traceable readings across a broad dynamic range — from full vacuum to 10,000 psi (68.9 MPa) — without requiring multiple instruments. Its dual-reference capability supports both gauge (vented) and compound (pressure/vacuum) configurations, making it suitable for hydrostatic testing, pressure safety valve (PSV) verification, leak testing, and HVAC commissioning. Designed and manufactured in Denmark, the XP3i complies with international standards including EN 60079-0/-11 (ATEX/IECEx), ISO 9001, and meets the mechanical robustness requirements of MIL-STD-810G for shock, vibration, and salt fog exposure.

Key Features

• Intrinsically safe operation certified for Zone 0/1 (ATEX II 1G Ex ia IIC T4 Ga) and Class I, Division 1 (UL/cUL), enabling deployment in explosive atmospheres without external barriers.
• Three selectable accuracy classes: ±0.05% of reading (ideal for wide-range applications), ±0.02% full scale (FS), or ±0.05% FS — configurable per user requirement and traceable to NIST-traceable calibration certificates.
• Marine-grade 316L stainless steel housing with IP67 ingress protection and salt-spray resistant finish, rated for continuous operation from −20 °C to +50 °C with no derating.
• Intuitive single-button interface with zero menu navigation — all functions accessible via tactile feedback and LED indicators; no user manual required for basic operation.
• Integrated PSV test mode with automatic ramp-hold-dwell sequence, real-time deviation display, and pass/fail threshold alerts aligned with ASME PTC-19.3 and API RP 553 guidelines.
• Onboard calibration reminder with configurable intervals and non-volatile memory retention of last calibration date, technician ID, and as-found/as-left data.

Sample Compatibility & Compliance

The XP3i employs chemically inert wetted materials — including 316L stainless steel pressure ports, FKM (Viton®) diaphragm seals, and ceramic-coated sensor elements — ensuring long-term stability when exposed to aggressive media such as seawater, sour gas (H₂S), chlorinated solvents, and ammonia-based refrigerants. It conforms to ISO 17025-compliant calibration practices when used with accredited laboratories and supports GLP/GMP documentation workflows through audit-trail-enabled firmware logging. All factory calibrations are performed under controlled environmental conditions (23 °C ±1 °C, <50% RH) and documented per ISO/IEC 17025:2017 Annex A.5 requirements.

Software & Data Management

CrystalControlWeb is a browser-based, zero-install cloud platform compliant with FDA 21 CFR Part 11 (electronic records/signatures) and EU Annex 11 (computerized systems). It enables secure, role-based access control via license keys, encrypted data transmission (TLS 1.2+), and immutable PDF report generation with digital signatures and tamper-evident hashing. The platform supports automated calibration certificate upload, trend analysis across multiple instruments, and cross-device synchronization of configuration profiles. Bluetooth 5.0 connectivity allows wireless setup, real-time monitoring, and remote firmware updates without physical access — critical for offshore platforms, confined-space installations, or remote pipeline monitoring sites.

Applications

• Pressure Safety Valve (PSV) testing and certification per API RP 576 and ISO 4126-1.
• Hydrostatic and pneumatic leak testing of piping systems, vessels, and heat exchangers (ASME B31.4/B31.8).
• Calibration transfer standard for field service teams performing on-site verification of analog gauges and transmitters.
• Marine engine room monitoring, ballast system verification, and subsea control module validation.
• Pharmaceutical clean utility monitoring (compressed air, nitrogen, pure steam) meeting ISO 8573-1 purity class requirements.
• Research and development labs requiring high-reproducibility pressure profiling in material testing and fluid dynamics studies.

FAQ

Is the XP3i suitable for use in Zone 0 hazardous areas?
Yes — the XP3i carries ATEX II 1G Ex ia IIC T4 Ga and IECEx Ex ia IIC T4 Ga certifications, permitting continuous operation in gas Group IIC atmospheres with ignition temperatures ≥135 °C.
Can the XP3i replace multiple analog gauges in a maintenance toolkit?
Yes — its 10,000 psi upper range combined with ±0.05% reading accuracy eliminates the need for five or more fixed-range mechanical gauges, reducing inventory, recalibration burden, and measurement uncertainty.
Does CrystalControlWeb support electronic signature and audit trail for regulated industries?
Yes — the platform implements full 21 CFR Part 11 compliance, including user authentication, operation logging, electronic signatures, and record retention policies configurable per organizational SOP.
What is the maximum duration of continuous data logging with DataLoggerXP?
With the optional DataLoggerXP firmware upgrade, the XP3i can store over 200 million data points — supporting >12 months of continuous 1 Hz sampling or multi-year storage at lower sample rates.
How is traceability maintained during field calibration?
Each XP3i includes a unique serial-numbered calibration certificate with uncertainty budgets, environmental correction factors, and NIST-traceable reference standard identifiers — all importable into CrystalControlWeb for automated certificate lifecycle management.