NJK
Precision
Patented airflow measuring stations and damper solutions engineered to deliver NIST-certified accuracy in even the most challenging ductwork conditions — where other technologies fall short.
Airflow Measuring Stations
NJK Precision’s flagship technology replaces an entire generation of conventional airflow measurement methods. Built on a patented dual-chambered airfoil design, these stations dynamically normalize turbulent airflows to deliver consistent, NIST-certified accuracy across the full velocity range.
The core NJK station features a patented dual-chambered airfoil Flow Frame paired with a single Thin Film Mass Air Flow sensing probe. Available in two frame profiles to minimize cross-sectional duct restriction.
- Patented dual-chambered airfoil design
- Measures down to 50 FPM velocity
- NIST Certified primary testing stand
- 2.75″ wide profile (duct <18″ H×W)
- Signal Processing Unit (S.P.U.) included
- Powered via 24 VAC — BAS compatible
Designed for critical continuous monitoring applications, this station integrates with building automation systems to maintain precise control over air exchange rates, ventilation compliance, and IAQ requirements.
- Real-time airflow volume and velocity output
- Precise outside air exchange rate control
- Room air exchange rate monitoring
- Modular — multiple sensors, one display
- Plenum-rated communication cables
- Minimal inspection and cleaning required
The patent-pending DLS mounts immediately adjacent to a damper or louver, eliminating placement headaches and delivering precision accuracy regardless of flow rate, turbulence, or non-laminar conditions.
- Mounts directly next to damper or louver
- Accurate at any flow rate or turbulence level
- Single sensor — lower installation cost
- Minimal duct airflow restriction
- Thin Film Advanced Thermal Dispersion
- Lifetime calibration included
Technology That Sets a New Standard
Traditional pitot tubes, averaging manifolds, and flow crosses carry placement restrictions, low-flow limitations, and accuracy degradation from turbulence. NJK Precision’s patented approach addresses each of these challenges head-on.
The patented airfoil Flow Frame dynamically normalizes turbulent, non-uniform airflow inherent in real-world ductwork — delivering clean, consistent readings regardless of upstream conditions.
A single Mass Air Flow “Thin Film” sensing probe using advanced Thermal Dispersion Technology provides highly accurate readings across the full velocity range with an extended sensor life cycle.
Traditional stations require three equivalent duct diameters downstream of a 90° elbow. NJK stations need just one — dramatically expanding where they can be installed without compromising accuracy.
Every NJK Flow Sensor Probe is calibrated on a primary NIST Certified Airflow Testing Stand achieving uncertainty of just 0.19% at 95% confidence across the entire measurable flow range.
One Signal Processing Unit with a single display can manage multiple flow sensor stations simultaneously — reducing hardware costs and simplifying commissioning for multi-zone systems.
NJK stations ship factory-calibrated and maintain that calibration for life — requiring only minimal periodic inspection and cleaning, with no scheduled recalibration visits needed.
Engineered for Critical Airflow Environments
NJK Precision stations are used wherever accurate airflow data is non-negotiable — from cleanrooms and laboratories to commercial buildings, healthcare facilities, and data centers.
Hospitals, cleanrooms, and pharmaceutical facilities depend on precise air exchange rate control for infection prevention and regulatory compliance. NJK stations deliver the accuracy these environments demand.
- Laboratory and cleanroom airflow measurement
- Precise room air exchange rate control
- Isolation room pressurization monitoring
- Pharmaceutical process ventilation
Office buildings, manufacturing facilities, and schools benefit from accurate outdoor air measurement for ASHRAE 62.1 compliance, demand-controlled ventilation, and improved indoor air quality.
- Outdoor air intake measurement
- Supply / return / exhaust measurement
- Building pressurization control
- Floor-level airflow measurement
- Demand-controlled ventilation (DCV)
Ready to Specify NJK Precision?
Capital Energy Equipment represents NJK Precision across our service territory. Contact our team to discuss product selection, placement requirements, and project specifications.