Differential Pressure
pressure measurement relative to the surrounding atmospheric pressure.
See Also: Pressure, Absolute Pressure
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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
Manometers
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Manometers in gauge, absolute, and differential pressures with several unit options including millitorr, inches of water, mmHg Pa, kPa, mmH2O, psi and more. Accuracies up to 0.025% full scale.
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Product
Manometer-Thermometer
HD2304.0
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Handheld manometer-thermometer with LCD display. It performs measurements of absolute, relative and differential pressure, and temperature.
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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
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
VELOCICALC Multi-Function Ventilation Meter
9565-P
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The portable, handheld VELOCICALC® Multi-Function Ventilation Meter 9565-P features a menu-driven user interface for easy operation in your local language. On-screen prompts and step-by-step instructions guide the user through instrument setup, operation, and field calibration. The 9565-P also features an ergonomic, overmolded case design with probe holder and a keypad lockout to prevent tampering during unattended use. The 9565-P model has a differential pressure sensor and does not include a probe.
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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
CorSense™ Environmental IoT Sensors
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Our line of CorSense™ wireless sensors are capable of monitoring air quality, humidity, barometric pressure, temperature, current, vibration, and more.Built with a rugged case and able to withstand harsh industrial environments, these sensors are all tested to ISO standards. When paired with CorGateway, sensors gather and transmit data securely to a Corvalent CorEdge computer anywhere from 2 to 28 miles away.Extremely energy efficient, CorSense IoT sensors can also run on batteries for up to 2 years.9 different sensor options:-Smart Vibration & Temperature Sensor -CO2, Temperature, Humidity & Particulate Matter Sensor -CO2, Temperature & Humidity Sensor -Temperature, Humidity, Pressure & Air Quality Environmental Sensor -Precision Pressure Bidirectional Differential Sensor -Pressure Bidirectional Differential Sensor -AC Current Monitor -Vibration & Temperature Sensor -Predictive Maintenance Module Sensor
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Product
Residential/Commercial Combustion Analyzer w/ Pressure
C163
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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 C163 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. Essential information for installing and maintaining furnaces and boilers all in one device.
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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 Differential Pressure Switch
A4
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Rugged Series A4 Differential Pressure Switch offers field adjustments and can handle system pressures up to 6000 psig. Piston design allows mounting in any orientation. The switch is capable of carrying moderate shock and vibratory loads
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Product
Clear Room Logger Transmitter
HD50CR
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The HD50CR is the ideal solution for monitoring of differential pressure, temperature and humidity in Clean Room applications.
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Product
Condensate Chambers
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Parker Condensate Pots play a key role in maximising the accuracy of differential pressure flow measurement on steam or vapour applications. Condensate Pots can significantly improve flow measurement accuracy in differential pressure measurement systems by providing an interface between the vapour and liquid phases.
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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
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
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
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
Compact Economic Differential Pressure Switch
PDPS
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The Series PDPS's large diameter diaphragm and snap action switch make it dependable and ideal for OEM applications. The Series PDPS Pressure Switches are available for pressure, vacuum, and differential applications and are factory preset for pressures from 0.07 in. of w.c. to 1.0 in. of w.c. with full-scale repeatability of ±0.02 in. of w.c.
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Product
Flow Meter
V-Cone
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The V-Cone Flow Meter is an advanced differential pressure instrument, which is ideal for use with liquid, steam or gas media in rugged conditions where accuracy, low maintenance and cost are important. With its DP built-in flow conditioning design, the V-Cone is especially useful in tight-fit and retrofit installations in which the long runs of straight pipe required by Orifice Plates, Venturi Tubes, and other technologies are either impractical or unavailable.
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Product
Water Manometers
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The AC6 Manometers are available in standard or high pressure versions. The AC6-SP Manometer can be used to measure differential pressure in the range 0.5-200 KPa and the AC6-HP Manometer operates in the differential pressure range 2-600 KPa. These electronic water system commissioning test sets have in built valve and orifice plate Kv values which enables the instrument to calculate and display flow rates during commissioning.
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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
Differential Pressure Switches
P845
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The Whitman Controls P845 Differential Pressure Switches are rugged and versatile, with excellent by-pass characteristics and the ability to handle a wide variety of media to 6,000 PSIG and set point ranges to 250 PSID. These switches are NEMA 4 rated and can tolerate submersion. They are commonly used across oil and water filter heads to detect when a filter element needs changing. It may be mounted in any orientation and is capable of carrying light to moderate mechanical shock and vibratory loads.
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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
Digital Pressure Gauges
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Digital gauges with alarms, DC loop-powered gauges, differential pressure gauges, and a variety of features. They provide fast results with clear readability and very high accuracy.
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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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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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Pressure Transducers with CAN Bus Interface
P66
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The Validyne model P66 is a digital differential pressure transmitter designed for industrial pressure measurement applications. The on-board microprocessor provides high accuracy and improved stability in changing thermal environments. Communication via CAN Bus provides remote zero and span adjustment as well as digital pressure readings in engineering units or pressure counts.
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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
Handheld Digital Manometer
475
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The Dwyer Series 475 Mark III Handheld Digital Manometer is ideal for field calibration, monitoring or trouble shooting HVAC systems, clean rooms or a wide range of other low pressure pneumatic systems. This handy instrument measures positive, negative or differential pressures of air and natural gases in ranges from 1 in. w.c. (0.249 kPa) to 150 psid (10.34 bar).





























