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Home » pressure switches

Articles Tagged with ''pressure switches''

Commissioning Chilled Water Systems

Tall, Vertical Instrumentation Piping in Central Utility Plants

Why vertical piping and trapped air can make your pressure readings lie
ES-cx-headshot-900x550.jpg
Miles Ryan P.E.
June 26, 2025

These two real-world case studies from ES NEWS Commissioning columnist Miles Ryan show how vertical piping and air pockets can throw off your instrumentation, and what you can do to ensure your readings reflect reality.


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posifa technologies 1170x658.png

Posifa A2L Refrigerant Leak Sensor Achieves Intertek Certification

The ACHR NEWS Editorial Staff
December 8, 2024

The Intertek certification verifies that the device meets the safety and performance requirements for refrigerant detection systems outlined in Annex LL of UL 60335-2-40:2022 Ed. 4 and CSA C22.2#60335-2-40:2022 Ed. 4. 


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Digital Pressure Gauge

Pressure Testing A System With Dry Nitrogen

This effective method verifies a system is leak-free
Joe Marchese
July 18, 2023
Pressure testing a system with dry nitrogen can be a very effective method of verifying a system is leak-free.
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WN_Dun An Sensing

DunAn Sensing LLC: Pressure Transducers

February 4, 2019

Offered in a wide selection of mechanical interface fittings, including copper tube, which provides the user with enhanced design flexibility, the over-molded plastic package reduces weight and provides a robust solution and improved vibration immunity while also reducing manufacturing costs.


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DunAn Sensing: Refrigerant Pressure Transducer

January 13, 2019

The CT Series is designed specifically to meet the customer’s expectations and high-efficiency systems needs while exceeding reliability specifications.


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Sensirion AG Switzerland: Differential Pressure Sensors

December 3, 2018

Applications include water heaters, burners, VAV controllers, and medical respiratory applications.


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WN E+E Elektronik

E+E Elektronik Ges.m.b.H: Pressure Sensor

August 6, 2018

he unit is dedicated for the measurement of differential air pressure in ventilation and air conditioning systems or for filter monitoring.


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Sensaphone: Pressure Sensor

April 2, 2018
This sensor measures air pressure in two areas and indicates if there is a difference between the readings. It is designed for clean room applications where air pressure must be the same in both rooms to prevent a vacuum from opening a door that could pull dust or other pollutants into the space.
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DunAn Sensing LLC: Pressure Transducers

DunAn Sensing LLC: Pressure Transducers

March 7, 2016

These microelectromechanical (MEMS)-based LP and HP Series of pressure transducers are available in multiple combinations of materials and/or pressure ports configurations. 


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MEMSIC Inc.: Pressure Sensor

MEMSIC Inc.: Pressure Sensor

February 22, 2016

The new MDP200 thermal differential pressure sensor was designed as a damper control for variable air volume (VAV) systems as well as HVAC applications, such as room pressure monitoring, fume hood controls, furnace pressure switches, heat recovery systems, burner control, fan control, filter monitoring, and others. 


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