FEATURES AND BENEFITS

NJK Precision Products are Clearly Better

NJK Precision products have a number of features and benefits that set our company apart from the competition. While no product can ever be perfect, the technological innovation and human-use orientation that goes into NJK Precision products make them the best on the market.

TECHNOLOGICALLY ADVANCED

  • Patented Dual-Chambered air-sampling technology
  • Patented Dual-Chambered airfoil design to dynamically normalize turbulent airflows inherent in the ductwork
  • Extremely reliable thin film resistor sensing module using advanced thermal dispersion technology
  • Accurate flow readings to less than 50’ per minute
  • NIST Traceable calibration over multiple flow points (25 to 37) from full flow down to the lowest measurable flow
  • Sensor probe mount inside sensor housing (optional exterior mount)
  • Sensing Probe and transmitter connections using an RJ-45 connector with 100% watertight connectors
  • The NJK Precision sensor utilizes an integral signal dampening feature to smooth out signal in high transient and crosswind applications

EASY TO INSTALL

  • Standardized with our special NJK-02 Anodized Extruded Aluminum product construction, ideal for a huge range of applications
  • Optional field assembled construction options for applications with limited access or when a sheet metal contractor may not be readily available
  • Can be added onto existing buildings or incorporated into totally new construction
  • Low installation cost
  • Installs with minimal ductwork needed ahead or after sensor
  • Easier installation process and guidelines

MORE PRECISE

  • Calibrated and scaled for NIST-certified airflow testing stand accuracy ratings with 0.19% uncertainty at 95% confidence
  • Accurate flow readings to as low as 50 feet per minute
  • NIST-traceable calibration over multiple flow points (25 to 37) from full flow down to the lowest measurable flow
  • Dual-Chambered Airfoil Design allows airflow measurement through ductwork requiring minimal duct lead-in or duct lead-out for accurate operation
  • NJK Sensor transmits a 1 to 10 VDC calibrated flow signal to the BAS with total accuracy calibrated to as low as 50 feet per minute airflow.
  • Accurate reads, even at extremely low flows, so operators can control fresh air intake volumes even when supply fan speeds are low or decreased
  • Flow signal is given directly in cubic feet per minute
  • Thin film resistor sensors provide accurate flow readings in all temperature and humidity conditions
  • Improved product durability and lifespan
  • Mounting assemblies available for many applications

A Unique Multi-Sensor Installation

Still not convinced? Consider that NJK Precision offers an economical option for multiple sensor installations that aren’t available from competitors. Instead of requiring a dedicated display unit for each airflow measuring station, we’ve decided to simplify things and offer one Multi Sensor Hub. Along with the hub, a multiple sensor Signal Processing Unit (SPU-M) saves on hardware and installation costs. Up to eight stations can be connected to an SPU-M through the hub.

This means that an operator can simultaneously monitor four airflow values from a single location. The SPU-M is powered by 24 volts (A.C. or D.C.) and provides four 1-10 VDC output values to the building automation system, Airflows can be automatically added together for a total sum of airflows.

Even More Benefits

  • Three sensors or group can be added together on each channel
  • Up to 300’ of cable length for every SPU-M and Multi Sensor Hub
  • Sensors added to each channel are viewed at BAS as one flow signal only
  • Each sensor in the channel or group can be viewed and modified at the SPU-M
  • The Multi Sensor Hub and Flow Measuring Module are all powered from the SPU-M
  • Multiple sensors (up to eight) can be monitored from a single SPU-M
  • Ideal for many applications, such as outdoor airflow measurement, supply/return/exhaust airflow measurement, precise control of outside or room air exchange rates, and laboratory airflow measurement

We guarantee the accuracy of all of our products. NJK Precision is not an arbitrary name; it’s based on the quality of the products.