Pressure Calibration Services in Walcott, ND

Maintain safety and accuracy in your pressure measurements with J&J’s pressure calibration services in Walcott, ND. We are an ISO/IEC 17025 accredited calibration lab experienced in calibrating all types of pressure instruments – from vacuum gauges and low-pressure sensors to high-pressure hydraulic transducers and relief valves. Serving North Dakota industries (energy, agriculture, manufacturing, etc.), we ensure your pressure devices deliver reliable readings that keep your operations efficient and compliant. J&J is a North Dakota-based full-service calibration lab, part of a nationwide network of Accredited Labs, which means you get local convenience with top-tier expertise. With our pressure calibration capabilities and commitment to quality, you can trust that everything from line pressure gauges to critical safety valves are calibrated to the highest standards.

Capabilities Overview

• Extensive Pressure Range: Our lab can calibrate instruments across the full pressure spectrum – from deep vacuum levels (microns of Hg) to high-pressure hydraulic ranges in the tens of thousands of PSI. We handle vacuum gauges, compound gauges, and positive pressure devices up through industrial hydraulic pressures. For example, we can verify a vacuum gauge at 0.1 Torr and also calibrate a 10,000 psi pressure transducer, covering all intermediate ranges your operations might require.
• Gas & Liquid Media Calibration: We use appropriate media and standards for the device under test. Gas pressure calibrations (air or nitrogen) are performed for pneumatics and low pressure gauges, while hydraulic oil deadweight testers and comparison pumps are used for high-pressure devices. This ensures your gauges and transmitters are calibrated under conditions similar to their actual use (avoiding errors due to compressibility or fluid differences).
• Accurate Reference Standards: J&J’s pressure standards include deadweight testers, digital pressure calibrators, and master gauges with fine resolution. These enable us to achieve low uncertainties in calibration (often 0.05% of reading or better, depending on range). Our deadweight testers cover a broad range and are themselves calibrated with NIST-traceable masses, ensuring ultimate accuracy. We also have portable pressure calibrators for field use, allowing us to bring precision on-site when needed.
  
  

Equipment Types Serviced

We calibrate a wide array of pressure and vacuum instruments, including:

• Pressure Gauges: Analog dial gauges and digital pressure gauges for vacuum, compound, and positive pressure ranges. This includes everything from HVAC low-pressure gauges, oil pressure gauges, to high-pressure hydraulic gauges (e.g., 5,000+ psi) used on machinery.
• Pressure Transducers & Sensors: Electrical pressure transmitters and transducers (millivolt, 4-20mA, or digital output). We verify their output against applied pressure and adjust any offset or span errors. Industries use our service for process transmitters, engine fuel pressure sensors, and laboratory reference transducers.
• Pressure Calibrators & Recorders: Portable pressure calibrators, pressure calibrator pumps, and pressure chart recorders. We ensure these calibration devices themselves are accurate so you can trust them in the field. Chart recorders (e.g. circular chart pressure recorders) are tested across their range for both pressure and recording accuracy.
• Vacuum Gauges: Pirani gauges, capacitance manometers, vacuum transducers, and mechanical vacuum gauges used in refrigeration or research. We can generate stable vacuum levels to test these instruments and ensure proper scaling from atmospheric pressure down to micron-level vacuum.
• Relief Valves & Safety Devices: We also test and calibrate pressure relief valves and safety valves to confirm they open at the correct set pressures. This service is crucial for OSHA and safety compliance in boilers, compressors, and pipelines. Each valve is gradually pressurized to verify its cracking pressure and reseal performance.

If you have specialized pressure equipment (such as differential pressure gauges, flow meters with pressure elements, or tire pressure machines), we can accommodate those as well – our technicians will use the appropriate standards and methods for any pressure-based measurement device.

Accreditation & Standards Compliance

J&J’s pressure calibrations are performed under our ISO/IEC 17025 accredited quality system, ensuring all measurements are accurate and traceable. We comply with relevant standards such as ANSI/NCSL Z540-1 and ISO 10012, and we participate in inter-laboratory comparisons to validate our methods. All reference gauges and weights have NIST traceability, which is documented in the certificates you receive. Our Scope of Accreditation covers pressure and vacuum ranges, so you can be confident that our competence is formally recognized. After calibration, each instrument is returned with a certification report listing the test points (e.g. various pressures), the readings vs. true values, and the measurement uncertainty. This detailed documentation helps you satisfy auditors and maintain an audit-ready calibration program. For regulated industries (e.g. FDA, EPA), our procedures ensure compliance with any additional requirements (like 21 CFR Part 11 for electronic records, if applicable). In essence, J&J delivers pressure calibration results you can trust, with full transparency and adherence to international standards of accuracy.