Static Pressure Sensors, Pitot Tubes & Gauge Fluids

Dwyer Stainless Steel Pitot Tubes

Pitot tubes differ from static pressure tips. They have two internal tubes that measure static pressure and total pressure.

Use with air velocity gauges, balancing kits, pneumatic air velocity transmitters, electronic air velocity transducers, and other applications where air velocity measurement is needed.

(Click on diagram below to enlarge)

Features:

• 304 stainless steel construction
• Inch graduations on sides of 160 series to quickly determine exact insertion depth
• Dwyer Air Velocity Calculator, direct reading flow charts and instructions included
• Use 1/8'' models in ducts as small as 4''; 5/16'' models in ducts 10'' or larger
• No calibration needed

Dwyer Air Measurement Gauge Fluids

These replacement fluids have been specifically formulated for use in Dwyer and other liquid filled measurement devices. They are designed with high visibility colors and the exact specific gravity (sp.gr.) needed for the listed instruments.

Blue Gauge Oil (1.910 sp.gr.) – for Mark II models 26 and 28, and other special instruments
Fluorescein Green Color Concentrate 3/4oz. – water coloring agent contains wetting agent for use in vertical manometers only
Red Gauge Oil (0.826 sp.gr.) – for use in manometers and all Dwyer gauges using red oil
Violet Gauge Oil (1.000 sp.gr.) – use in place of water for better meniscus and visibility

Duct Sensors for VAV Systems

These sensors are designed for use with VAV terminal units in HVAC systems. They are used in conjunction with the CEP series of controller/ actuators to maintain the desired airflow to an occupied space.

Two lengths are available for accommodating various box inlet sizes. Sensors are inserted into the inlet collar of the box. The foam backing on the sensor head protects against conditioned air leakage.

Differential Pressure Flow Sensors

These sensors are designed to sense differential pressure in the inlet section of variable air volume terminal units and fan terminal units. They can also be used to sense differential pressure at other locations in the main or branch duct systems.

The “H” port senses total pressure and the “L” port senses static pressure The difference between these signals is differential or velocity pressure.

These sensor are normally used in conjunction with the VAV 1000, 2000 and 3000 series VAV terminal controllers for individual zone control in HVAC systems.

There are four lengths available to accommodate box size diameters of 4'' up to 16''.