Differential Pressure
pressure measurement relative to the surrounding atmospheric pressure.
See Also: Pressure, Absolute Pressure
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Product
Low Differential Pressure Switch
1900
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Our most popular series combines advanced design and precision construction to make these switches able to perform many of the tasks of larger, costlier units. Designed for air conditioning service, they also serve many fluidics, refrigeration, oven and dryer applications
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Product
Differential Pressure and Temperature Data Logger
PRTemp1000D
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The PRTemp1000D is a rugged pressure and temperature data logger designed to accurately monitor and record pressure and temperature at user programmable reading intervals. The rugged stainless steel design allows for the device to be placed in harsh environments, which makes it well suited for use with air conditioning systems, chilled water, hot water, air, gas, oil and steam pressure systems.
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Product
Single and Dual Differential Pressure Switch
1620
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Our old faithful switch design is still best where highest precision combined with diaphragm sealed leak proof construction and mounting simplicity are required. Model 1626 and 1627 differential pressure switches are identical in design and construction except that Model 1626 has a single electric switch and Model 1627 has dual electric switches.
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Product
Frazier Differential Pressure Air Permeability Tester
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The Low Pressure Air Permeability Machine was developed by the National Institute of Standards and Technology of measuring the air permeability of textile type materials. and It is the acknowledged standard of the U.S. Government and the U.S. Textile Industry. The second model, High Pressure Air Permeability Machine is produced on the same principle as the Low Pressure Machine, but designed with a much greater versatility for use through its higher attainable airflow and differential pressure. Both models are extremely accurate and reliable, very easy to operate, and nearly maintenance free.
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Product
Very Low Pressure Variable Reluctance Sensor
DP103
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The Validyne DP103 is designed for exceedingly low differential pressure measurement applications where high accuracy is required under rough physical conditions. With full scale ranges down to -0.008 psid (-0.56cm H2O), this instrument is being used in the measurement of very low flow rates of gases where symmetrical pressure cavities are required for dynamic response. It is also used in very small leak detection and pressure null detection systems.
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Product
Explosion Proof Differential Pressure Switch
1950
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Model 1950 Explosion-proof Differential Pressure Switch combines the best features of the popular Dwyer Series 1900 Pressure Switch with an integral explosion-proof and weatherproof housing, making it an exceptional value for either application. It is CE, UL and CSA listed
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Product
Pressure Testing
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Types of Pressure Testing Performed at GTS:*Hydrostatic Pressure Testing*Leak Pressure Testing*Burst Pressure Testing*External Pressure Testing*Pressure Testing at Temperature Extremes*Vacuum Pressure Testing*Differential Pressure Testing*Cyclic Pressure Testing
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Product
Pressure Gas Leak Detectors
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The testo 512 differential pressure meter is available as four models. This model has a measuring range from 0.0.29 psi and is ideal for measuring pressure differences at filters and for carrying out pitot static tube measurements in air ducts at air flow speeds between 16 and 180 fps.
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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
Gas Permeability Tester
QT-GPT
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Gas Permeability Tester- QT-GPT series is used to test the gas transmission rate (GTR) of packaging material by differential pressure method.
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Product
Manometers
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GAOTek has developed advanced manometers that are high quality, affordable, and accurate. They are versatile instruments designed for the measurement of different pressure levels. We have a wide variety of manometers available for measuring the pressure of both liquids and gases whilst maintaining ease of use. Manometers are used as a pressure instrument and for calibration of other instruments. They can be used to measure gauge pressure, differential pressure, and absolute pressure and are generally used to measure pressures as high as 100 inches of 2.95 Red Fluid (10.65 PSI). Our products are designed to bring users the best experience when it comes to measurement, emphasizing effectiveness and efficiency above all else, and are for sale to the United States, Canada and globally.
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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
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
Pneumatic Pressure Transmitters
Deltapi N Series
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Deltapi N series includes a range of pneumatic transmitters suitable for reliable measurements of pressure, differential pressure, flow or level of liquids, steam and gas. Deltapi N transmitters provides a wide selection of measuring elements to match required working pressure ratings and calibrated spans.
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Product
Micromanometer – Thermometer – Data Logger – 200 mbar f.s.
HD2134.2
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Portable Micromanometer-Thermometer Data Logger with 200 mbar built-in sensor. It performs measure of absolute, relative, differential pressure and temperature.
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Product
Handheld Portable Multifunction Data Logger
HD31
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Three independent input channels Automatic recognition of the probes - Measurement of Temperature Relative Humidity Atmospheric and differential pressure Air Speed Illuminance (lux) and Irradiance Carbon dioxide (CO2) – Air Quality Direct voltage (VP473 module) and current (IP472 module).
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Product
Custom Differential - Pres/Vac Meters - High Accuracy ±0.05%
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Our completely customizable high accuracy differential digital pressure meters allow you to get exactly the options that you need.
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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
Battery Data Logging Device
FST-AM
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Foresight Electronics Co., Ltd.
A data logger, is an electronic instrument that records measurements at set intervals over a period of time. Depending on the particular data logger, measurements can include: air temperature, relative humidity, AC/DC current and voltage, differential pressure, time-of-use (lights, motors, etc.), light intensity, water temperature, water level, dissolved oxygen, soil moisture, rainfall, wind speed and direction, leaf wetness, pulse signals, room occupancy, plug load, and many more.
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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
Residential/Commercial Combustion Analyzer Kit for Oil-Fired Appliances /Printer
C165+OILKIT
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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
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
Micromanometer-Thermometer – 20 mbar
HD2114.0
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Portable pressure micromanometer thermometer with 20 mbar built-in sensor. It measures absolute, relative and differential pressure, as well as temperature.
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Product
Gas Permeability Testers
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Gas Permeability Tester (Gas Transmission Rate Tester) is based on the differential pressure method and is professionally applicable to the determination of gas transmission rate of plastic films, composite films, high barrier materials, sheeting, metal foils, rubber, tires and permeable membrane.
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Product
Differential Pressure Flow Meters
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Engineers can rely on the V-Cone dp flow meter to make life easier. McCrometer’s differential pressure flow meter is the versatile, highly compatible flow measurement solution for a variety of industries. When accuracy and repeatability are critical, the V-Cone’s performance brings superior value.
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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
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
Pressure/ Vacuum Sensors
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There are three different types of pressures that can be measured using Premier Electrosystems' Pressure Sensors: Gauge, Absolute, and Differential. Gauge pressure is the pressure measured relative to the ambient atmospheric pressure.A typical application for a gauge pressure sensor is to measure liquid levels in a vented tank using the difference in hydrostatic pressure and ambient atmospheric pressure. Absolute pressure sensors will give the result relative to zero (a perfect vacuum). This is useful in applications where there is a direct effect of altitude on the pressure being measured. Differential pressure sensors measure the difference in pressure between two points. Differential pressure sensors are often used to monitor airflow in HVAC applications.
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Product
Pressure / Manometers
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Sper Scientific handheld manometers, vacuum, and pressure meters are ideal for measuring low differential pressure in clean rooms, test and balance, medical equipment, HVAC, pneumatic systems and computer peripherals.
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Product
CO2 Air Quality & Differential Pressure Measurement
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Our Rotronic CO2 and differential pressure instruments complete the PST range of parameters important for environmental monitoring.





























