Eastern Instruments VAP3® Gas Flow Sensor

Original Modification,the Oriental Instruments VAP3® Heated Pitot Tube incorporates a modification to the original VAP Pitot Tube,allowing it to work in most situations where the Pitot Tube freezes or starts to work less accurately. Standard VAP3® pitot tubes feature a unique average velocity and parallel plate patented design that when inserted into an airflow duct,they provide precise differential pressure output,allowing precise airflow measurement or process control. The heated pitot tube uses the same VAP3® pitot tube technology to provide extremely accurate differential pressure output while extending the traditional temperature range handled by the original pitot tube. Heated pitot tube with integral heating system now accurately measures air flow to -22 degrees Fahrenheit!,integrally heated pitot tubes can be installed in clean air or particulate-laden applications,and their accuracy typically maintains the accuracy of the original VAP3® (±2%) even when installed in icy locations. The heating system integrates a heating element into the pitot tube,so the problem of ice buildup... goes away. Since the pitot tube is not prone to freezing,the surface area of the pitot tube is not affected by damage to accuracy or even from flow measurement,eliminating the impact of ice accumulation. Therefore,the accuracy of the heated pitot tube is not affected by conditions such as freezing rain. Even extreme temperatures around cooling towers

characteristic

• GREAT FOR FREEZING TEMPERATURES - The VAP3® Heated Pitot can prevent freezing of the pitots down to -22o F and is perfect for regions that routinely see freezing temperatures.
• Versatile Design - Due to the unique design of the VAP3® heated pitot tubes,they be used in both clean air applications and applications con particulate matter.
• Parallel Plate Cross-Section Design - Minimizes turbulence at the sensing port and prevents particle build-up while also being suitable for high range applications.
• Multiple Differential Pressure Sensing Ports - Use multiple pitot tube arrays to average velocity across the entire pipeline.
• DURABLE CONSTRUCTION MATERIAL - Extruded from 6063 series aluminum with a final Teflon® hard anodized coating with a Rockwell 65C surface hardness.
• BASIC INSTALLATION - Each VAP3®/PA and VAP3®/SA Pitot probe be inserted into the duct utilizing a pre-fabricated weld on insertion port. When multiple probes are needed within the duct,the total and static sensing ports can be manifolded together.
• NEGLIGIBLE PRESSURE LOSS - Due to the streamline,narrow cross-section of the Parallel Plate Pitot design,the VAP3®/PA and VAP3®/SA will not restrict the airflow,therefore there will be minimal,if not negligible pressure drop across the measurement area. Integrated temperature elements are available to further reduce in-duct obstructions.
• Independent Pitot Control - For installations requiring multiple pitot tubes,an SSR is installed in the control package for each installed pitot tube,meaning have temperature control of every pitot tube in the array.
• High/low temperature alarm - High/low temperature alarm contacts are available to maintain control of the heated pitot tube to ensure that the pitot tube does not freeze and does not overheat.
• Ideal for Freezing Temperatures - The VAP3® heated pitot tube prevents the pitot tube from freezing to -22°F,making it ideal for areas where freezing temperatures are common.
• VERSATILE DESIGN - Due to the VAP3® Heated Pitot's unique design,they can be utilized in both clean air applications as well as in particulate-laden applications.
• Multiple Differential Pressure Sensing Ports - Velocity averaging across the entire pipe through an array of multiple pitot tubes.
• DURABLE MATERIALS OF CONSTRUCTION - Constructed from extruded 6063 series aluminum with a final process Teflon® hard anodized coating,yielding a surface hardness of Rockwell 65C.
• Negligible pressure loss - Due to the streamlined,narrow cross-section of the parallel-plate pitot tube design,the VAP3®/PA and VAP3®/SA do not restrict airflow,so the pressure drop across the entire measurement area is small,if not negligible. An integrated temperature element further reduces pipe clogging.
• Independent Pitot Control - For installations requiring multiple pitot tubes,an SSR is installed in the control package for each installed pitot tube,meaning have temperature control of each pitot tube in the array.