The Air Monitor VELTRON DPT Differential Pressure Transmitter (100% United States Origin) is an ultra-precise, heavy-duty industrial instrument engineered specifically for demanding fluid dynamic applications in hazardous and explosive environments. Operating on proven differential pressure sensing technology, the VELTRON DPT maintains an exceptional accuracy of ±0.5% of Natural Span, providing reliable and drift-free monitoring even in ultra-low differential pressure ranges.

To ensure stable signal transmission in turbulent process ducts, the transmitter features a user-selectable low-pass filter that effectively dampens dynamic pressure fluctuations caused by fan blade pulsation and airflow turbulence. Furthermore, the unit incorporates an optional square-root extraction function, linearizing the differential pressure signal directly into an output proportional to volumetric or mass airflow. This built-in capability simplifies integration into supervisory SCADA, PLC, and DCS architectures without requiring external mathematical processing blocks.

Engineered to meet the most stringent safety standards, the Air Monitor VELTRON DPT is Factory Mutual (FM) Approved as Explosion Proof for Class I, Division 1, Groups B, C, and D, and Dust Ignition Proof for Class II and III, Division 1, Groups E, F, and G. Housed in a robust, corrosion-resistant NEMA Type 4X enclosure suitable for both indoor and outdoor harsh industrial environments, it delivers unparalleled durability against moisture, corrosive gases, and dust ingress. It is the premier choice for petroleum refineries, offshore platforms, power plant boilers, lime/cement kilns, chemical processing facilities, and mission-critical hazardous HVAC systems.

• Manufacturer: Air Monitor Corporation
• Country of Origin: United States (100% United States Origin)
• Model: VELTRON DPT
• Equipment Category: Industrial Differential Pressure & Flow Transmitter
• Measurement Accuracy: ±0.5% of Natural Span
• Signal Filtering: User-selectable Low-pass filter for turbulence dampening
• Flow Calculation: Square root option for signal output linear to airflow
• Explosion-Proof Approvals (Factory Mutual - FM Approved):
  - Explosion Proof: Class I, Division 1, Groups B, C, D (Flammable Gases and Vapors)
  - Dust Ignition Proof: Class II, III, Division 1, Groups E, F, G (Combustible Dusts and Fibers)
• Enclosure Rating: Suitable for indoor and outdoor NEMA Type 4X hazardous locations (Corrosion and weather resistant)
• Process Media: Clean air, combustion air, industrial flue gases, non-corrosive gas streams in hazardous zones
• Output Interface: Standard industrial 4-20mA / Voltage analog signals (configurable)
• Target Industries: Petrochemical refining, oil & gas storage, power generation boilers, thermal oxidizers, kilns and digesters, chemical processing, pharmaceutical facilities, and hazardous environment HVAC ventilation.