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Thermal Dispersion Airflow Measurement

AD-1252 Thermal Dispersion Probe Airflow Measuring System

Averages velocity and temperature from up to four probes and sixteen sensing points
At Johnson Controls, we’ve engineered the AD-1252 to use the latest in thermal dispersion technology to measure air flow in even the most demanding applications, giving you the reliability you need in an air flow monitoring system. Our AD-1252 features high accuracy with an aerodynamically shaped probe, CAT5e communication cables, and VDC or mA outputs to allow communication with other systems. The AD-1252 even features a wind gust filter to provide consistent readings in outdoor applications with occasional high winds.
Features and Benefits
Resources
  • Airfoil-Shaped Aluminum Probes – Reduce noise and pressure drop to almost negligible levels and provide longer service life
  • Digital Controller Display – Provides visual readout of flow, temperature, and diagnostics
  • CAT5e Cable with RJ-45 Connectors – Reduces installation and commissioning time
  • Multiple Microprocessor-Based Circuits – Allow independent sensor readings or single calculated average
  • LCD Screen – Shows Cubic Feet Per Minute (CFM) or velocity and temperature
  • 4 to 20 mA or 2 to 10 VDC Analog Outputs – Allow communication with any Building Automation System
  • Wind Gust Filter – Provides consistent readings in outdoor air applications compensating for occasional high wind gusts
  • NIST Traceable Calibration – Allows accurate, repeatable measurement from zero to maximum airflow using Johnson Controls® thermal dispersion measurement technology
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