Differential Pressure
pressure measurement relative to the surrounding atmospheric pressure.
See Also: Pressure, Absolute Pressure
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Product
Manometers
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We offer manometers to determine absolute pressure, negative pressure or differential pressure in air and liquids. All our manometers are controlled by micro processors to guarantee the highest accuracy. Our manometers display quick results and our technical staff will advise you regarding our measuring instruments.
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Product
Regulators
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Parker offers a range of air-line, pressure high flow and single phase regulators for instrumentation, filtration, refrigeration and pneumatic applications. Instrumentation regulators are used in the process, power, oil, gas and semiconductor industries to control the flow of liquids and gases with speed and precision. Air regulators provide quick response and accurate pressure regulation for the most demanding industrial air preparation applications, available as miniature, economy, compact, standard, hi-flow and pilot-operated regulators to meet a variety of service needs. The refrigeration line of pressure regulators includes valves that control inlet, outlet or differential pressure. Each regulator is available with an assortment of variations which enable one regulator to perform multiple functions. All regulators are built to the highest quality standards, recognized around the world for their performance, durability and reliability.
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Product
Floating Contact Null Switch
1640
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The unique electric switch design in the 1640 is another Dwyer Instrument, Inc. innovation. The Dwyer Model 1640 Differential Pressure Switch resembles the Series 1630 switches. The Model 1640, however, is equipped with a single pole, double throw floating contact switch (not snap acting) so it functions as a null switch.
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Product
Miniature Adjustable Pressure Switch
MDA
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Sense differential pressure with this Miniature Adjustable Pressure Switch. The switch features field adjustable set point and gold inlay contacts. Air or other compatible fluids can be used on the ?high side?.
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Product
Low Pressure Variable Reluctance Sensor
DP45
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The Validyne DP45 Very Low Differential Pressure Transducer is designed for extremely low pressure measurement in the order of 1 inch water column. This instrument is used extensively in connection with flow measurements where dynamic response at low flow rates is required. Dynamic line pressure effects are minimized due to the combination of low internal volume, symmetrical construction, and small volumetric displacement inherent in the DP45 design.
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Product
Power Transfer Unit
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The PTU is a bi-directional, back to back, variable/fixed displacement unit, with a differential pressure compensated displacement control. Displacement of the variable displacement unit is varied to maintain the required running and breakout pressure differential between the yellow and green systems.
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Product
Explosion-Proof Differential Pressure Switch
1950G
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The Model 1950G Explosion-Proof Switch combines the best features of the popular Dwyer Series 1950 Pressure Switch with the benefit of natural gas compatibility. Units are rain-tight for outdoor installations, and are UL listed for use in Class I, Groups A, B, C, & D; Class II, Groups E, F, & G and Class III atmospheres, ATEX for EExd IIB & Hydrogen T6, and CSA & FM approved for Class I, Div. 1, Groups B, C, D; Class II, Div. 1, Groups E, F, G and Class III atmospheres
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Product
Pressure Manometer
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These devices indicate the difference between two pressures (differential pressure), or between a single pressure and atmosphere (gage pressure), when one side is open to atmosphere.
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Product
Intrinsically Safe Pressure Module
APMi
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AMETEK Sensors, Test & Calibration
The APMi intrinsically safe portable pressure modules offer the functionality and flexibility to read up to four pressure inputs with a single HPC50 handheld pressure calibrator. Use the modules to either expand the range of the HPC50, view all four readings at the same time, or read two different differential pressures simultaneously. The APMi intrinsically safe pressure modules deliver the same high level accuracy whether in the lab or in the field.
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Product
Low Pressure Transmitters
HD404T / HD404ST Series
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Very low pressure relative or differential pressure, Low range 50 Pa, 4-20 mA or 0-10 Vdc
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Product
Electronic Differential Pressure
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An innovative software and hardware concept makes it possible to combine any two pressure transmitters of the VEGABAR 80 series into an electronic differential pressure system. Electronic differential pressure measurement is often used for filters, pumps and pipelines.
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Product
Pressure And Temperature Measuring
ESS3 series
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The devices of the ESS3 series are used to measure and save the pressure, differential pressure, temperature, and quantity in supply networks for gas, water, and other media. The portable data loggers with battery backup saves the pressure history for up to several years. They can also be used in hazardous areas (Zone 1).
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Product
Mini-Photohelic Differential Pressure Switch/Gage
MP
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The Series MP Mini-Photohelic differential pressure switch/gage combines the time proven Minihelic II differential pressure gage with two SPDT switching setpoints. The Mini-Photohelic switch/gage is designed to measure and control positive, negative, or differential pressures consisting of non-combustible and non-corrosive gases.
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Product
Residential/Commercial Combustion Analyzer Kit w/ NOx Sensor/ Oil-Fired Appliances/ Printer
C165+NOILKIT
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UEi Test & Measurement Instruments
Backed by UEi Service+ to give up to 6 years’ warranty, next day recertification, and a reduced cost of ownership. The C165+ Residential/Commercial Combustion Analyzer is easy to use with a rugged design, multiple sensor protections, altitude compensation and differential pressure. Prints to optional printer and wireless App. The new LINK feature connects the included wireless pipe clamp temperature probes and other optional probes to the C165+. Essential information for installing and maintaining furnaces and boilers all in one device.
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Product
Flow And Differential Pressure Sensors
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ACEINNA’s flow and differential pressure sensors are designed to serve the need for mass flow and pressure sensing in multiple applications such as gas meters, process control, HVAC, medical, chemical, food and beverage, etc. We offer two newly launched and announced product lines, the MFC2000 family of gas flow modules and the MDP200 differential pressure sensor.
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Product
Alnor Micromanometer
AXD610
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The Alnor® Micromanometer AXD610 is an easy to use, handheld digital micromanometer for fast, accurate and reliable pressure measurement. It can also calculate velocity when used with a pitot tube. Ideal applications include HVAC commissioning and troubleshooting, testing and balancing, Pitot tube duct traverses, static pressure measurements and differential pressure measurements.
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Product
Wireless Data Logger System
HD35
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Wireless datalogging system allowing the monitoring of a multiplicity of physical quantities in the most diverse fields of application. Temperature - Humidity - Atmospheric and differential pressure - Illuminance - Irradiance UVA, UVB, UVC, CO, CO2 - Solar radiation - Precipitation - Wind speed and direction, Leaf wetness, Volumetric soil water content, Level, WBGT.
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Product
Differential Pressure Transmitter
616W
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Positive, negative and differential pressures can be measured within a full span accuracy of ±0.25 with the Series 616W Differential Pressure Transmitter. Units are enclosed in a polycarbonate case, rated NEMA 4X (IP66) and operate by sensing the pressure of air and compatible gases then sending a standard 4-20 mA output signal.
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Product
Mass Burette Flow Detector
FX-1100 Series
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The FX-1100 Series Mass Burette Flow Detector takes the position of the fluid surface inside the burette as the head pressure using the differential pressure detector attached at the bottom and directly measures the flow of fluid as a mass based on changes in this pressure. It does not require calculation correction of temperature and specific gravity, and has many advantages such as high accuracy and extremely less affected by air bubbles, which enable to measure fuel consumption in the tests such as chassis dynamometer and engine bench. The 3 models are available according to the measurement range and application.
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Product
Residential/Commercial Combustion Analyzer
C165+
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UEi Test & Measurement Instruments
Backed by UEi Service+ to give up to 6 years’ warranty, next day recertification, and a reduced cost of ownership. The C165+ Residential/Commercial Combustion Analyzer is easy to use with a rugged design, multiple sensor protections, altitude compensation and differential pressure. Prints to optional printer and wireless App. The new LINK feature connects the included wireless pipe clamp temperature probes and other optional probes to the C165+. Essential information for installing and maintaining furnaces and boilers all in one device.
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Product
Liquid Flow Meters
L Series
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Alicat Scientific, Incorporated
Alicat’s L-series liquid flow meters uses our patented laminar flow design to provide users with fast, accurate, and repeatable volumetric flow measurement for water or selected other liquids (see Quick Specs below). At the heart of Alicat’s L-Series liquid flow meters is an internally compensated, laminar differential pressure measurement technology that yields linear results over a wide flow range.
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Product
Pressure Measurement
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Advanced Thermal Solutions, Inc.
Instruments for Measuring Differential Pressure and Pressure Drop in Electronic Enclosures.
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Product
Pressure Controllers For Closed Volumes
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Alicat Scientific, Incorporated
Use dual-valve pressure controllers to measure and control absolute, gauge, or differential pressure in closed volumes. Pressure controllers are accurate to ±0.25% of full scale, with a measurement range from 0.01-100% of full scale.
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Product
Wet/Wet Differential Pressure Transmitter
645
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Series 645 Wet/Wet Differential Pressure Transmitters are designed for use with compatible gases and liquids which can be applied to both the pressure and reference ports. Quick response capacitance sensor delivers a 4 to 20 mA output signal proportional to differential pressure with ±.25% accuracy.
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Product
Stimulus Test Cell
HA7300
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The Stimulus Test Cell HA7300 is a test cell which provides an environment for high-speed, highly accurate temperature and pressure test of differential pressure sensors, utilizing Advantest’s unique temperature control unit with simultaneous temperature control for 8 devices, as well as a newly developed 2Port pressure controller and pressure application nozzle.
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Product
Air Leak Testers
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Air Leak Tester is the automatic leak detector detects any leaks by the minute change of differential pressure and conducts OK/NG judgment. Ideal to be built into a production line for a labor saving and a quality control purpose.
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Product
Digihelic Differential Pressure Controller
DH
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The Series DH Digihelic Differential Pressure Controller is a 3 in 1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time and money.
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Product
Wet/Wet Differential Pressure Transmitter
655
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The Series 655 Wet/Wet Differential Pressure Transmitter converts a positive or a positive differential pressure measurement into a standard 4-20 mA output signal. Designed for use as a wet/wet differential pressure transmitter, units can be used to measure gas or liquid pressures compatible with 316/316L stainless steel wetted parts
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Product
Wet/Wet Handheld Digital Manometer
Series 490A
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Liquid & Gas Pressure Measurement, ±0.5% FS Accuracy. The SERIES 490A Digital Manometers are versatile, hand-held, battery operated manometers available in several basic ranges for positive or positive differential pressure measurement and can tolerate most liquid media compatible with 316LSS. A new feature added to the Series 490A is a field adjustable damping, which allows the user to choose the level of display averaging rate corresponding to the fluctuation level common in many applications.
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Product
Ruggedized Pressure Transducer
P24
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The P24 Differential Pressure Transducer is the combination of a variable reluctance pressure transducer and a miniature carrier demodulator integrated into a single package to provide for operation from mobile dc power and deliver a standardized dc output suitable for recording or telemetry.
