Adjustable Differential Vacuum Switch is housed in pressure die cast aluminum powder coated enclosure. They are recommended for panel mounting or outdoors service based on the type of enclosure.

Adjustable Range Pressure Transmitter is an electrical surge protected transmitter. These are durable and compact with all welded 316 stainless steel constructions and exceptional ±0.25% accuracy. The upper range limit of the span adjust is from 16 to 100% and it has -600 to 600% of low range limit. Output is 4-20 mA with 12-40 VDC power supply. Units are explosion-proof, intrinsically safe with FM approval and they meet NACE standards for offshore applications. It has high ±0.15% accuracy.

Advanced process control is a broad term within the control theory. It is composed of different kinds of process control tools like model predictive control, statistical process control, run2run, fault detection and classification , sensor control and feedback systems. They are often used for solving multivariable control problems or discrete control problem. It is connected to a distributed control system .

Air cooled power tubes consist of socket and filter. These power tube equipment is done with squirrel cage blowers. It requires air flow when operated at higher altitudes because of decreased density of the cooling air. Tube data sheet gives cooling system correction information. It has an air interlock switch on the cooling fan to prevent voltages to the tube unless cooling air is flowing.

Air flow meter is know as air consumption meter. It is a device that measures how much air is flowing through a tube. They does not measure the volume of the air passing through the tube, it measures the amount of mass flowing through the device in a defined time segment. This is just an application of mass flow meters for a special medium.

Air Flow Switch is designed to prove airflow control in wide variety industrial applications. An air flow switch is used as a volume booster, using a low flow pneumatic signal to produce an output pressure with a higher flow capacity. The air flow switch is available for either positive or negative air pressure. Air flow switch is also used to signal the air flow from ventilation units.

Air Handling Fan Controllers is a speed control system. It provides a separate heating mixing air deck. It also provides greatest efficiency in the cooling deck.

An air header is used to replace many valve assemblies, which is normally operated from one source. It consists of up to ten outlet-isolating valves with one distribution pipe. It is generally made of stainless steel.