Pressure & Flow Instruments

About Pressure & Flow Instruments

Pick up an easy-to-install clamp-on ultrasound flow meter and a flow- and return-temperature measuring solution, an intrinsically safe pressure generation station, or a seal kit for your comparator. Whatever you're looking for, take off the pressure and flow through over two hundred and fifty products, prices range from under £50 to over £10,000.

• Flow Meters - ensures that correct pressure and water flow are present within systems
• Pressure Calibrators & Controllers - selection of Pressure Calibrators, indicators, and controllers providing critical process measurement information
• Pressure Gauges - typically used in processes where pressure cannot dip below atmospheric pressure, such as when measuring and controlling tyre pressure
• Pressure Generators - generate pressure with these easy-to-use hydraulic or pneumatic stations
• Pressure Modules - provide accurate readings on pressure and reduce errors during pressure calibration
• Pressure Pumps & Comparators - convenient instruments for bench pressure calibration and converting electrical energy into fluid pressure
• Pressure Sensors - converts an input mechanical pressure in gases or liquids into an electrical output signal
• Hydraulic Deadweight Testers - a calibration standard that uses the principle of a pressure balance to calibrate pressure-measuring instruments
• Pneumatic Deadweight Testers - calibrate pressure-sensing instruments, such as transducers, transmitters, gauges, and pressure switches
• Pressure & Flow Accessories - over fifty items to enhance your instruments, make life easier and keep the workday flowing

If you have any questions please get in touch.

Popular Products

• Panametrics AquaTrans AT600 Ultrasonic Liquid Flow Meter: Designed for accurate, non-intrusive flow measurements. Using advanced correlation transit-time technology, it delivers precise velocity, volumetric, and totalised flow outputs. Its clamp-on design enables easy installation without process shutdowns. Featuring a permanent solid couplant for consistent performance, the AT600 accommodates various pipe sizes and materials, including lined pipes, making it a cost-effective, low-maintenance choice for flow measurement.

• Micronics PF222 Portaflow Portable Ultrasonic Clamp-on Flow Meter: User-friendly device for non-invasive flow measurement. Uses digital signal processing (DSP) for accurate readings without pipe penetration. Its clamp-on design allows quick installation for temporary or permanent use. Available with A and B sensors.

• Fluke 719PRO Electric Pressure Calibrator: Features an integrated electric pump for one-handed pressure generation up to 300 psi. It can source, simulate, and measure mA signals, making it ideal for calibrating transmitters and gauges. The large backlit display shows multiple parameters and a programmable pump limit prevents over-pressurisation.

• Ametek Crystal HPC40 Series Pressure Calibrator: Delivers precise pressure calibration, operating from -20 to 50°C with ±0.035% accuracy. It measures gauge, absolute, and differential pressures up to 15,000 psi (1000 bar) and features a user-friendly "Non-Menu" interface. Capable of measuring and sourcing mA, it includes a high-accuracy thermometer with “True Ohm” technology. Single or Dual Sensor options.

• Budenberg Model 726 Classic 63mm Stainless Steel Gauge: Excels in pressure measurement with its robust design and reliability. Made from high-quality stainless steel, it endures harsh industrial environments and fits easily into tight spaces. It provides precise readings up to 400 bar and features a sleek, professional appearance. Ideal for chemical processing, oil and gas, and manufacturing, the Model 726 consistently delivers the trusted quality and innovation Budenberg is known for.

• Sika Type E2 Digital Pressure Gauge: A high-precision instrument for stationary and mobile measurements. It serves as a reliable reference gauge for calibrating other devices, featuring a user-friendly interface and clear digital display. Its durable construction suits industrial environments, while advanced data logging capabilities enable comprehensive pressure monitoring. Pressure range options are available.

• Fluke 750P06 Pressure Module: Provides accurate pressure measurements from 0 to 100 psi (0 to 7 bar) with a 4X burst rating for durability. Offering a reference uncertainty of ±0.0175%, it ensures reliable calibration readings. The module connects seamlessly to Fluke multifunction calibrators and displays pressure in up to 11 engineering units.

• Sika P60 Handheld Pneumatic Pressure Pump: Generates pressure from -0.95 to 60 bar, ideal for adjusting and testing pressure instruments. Its lightweight, compact design ensures easy transport, while its ability to produce both positive pressure and vacuum adds versatility. It features a fine adjustment valve for precision and a robust hose with quick coupling for easy connections.

• Fluke P3860 High-Pressure Oil Hydraulic Deadweight Tester: Premium calibration tool for high-pressure applications, with a range of up to 60,000 psi (4000 bar). It calibrates various devices, featuring a durable tungsten carbide piston and cylinder. Equipped with a hand pump and adjustable mass set for local gravity, it offers accuracy classes of 0.02% and 0.015% of reading for precise results.

• Ametek PK II Pneumatic Deadweight Tester: Its floating-ball design features a durable ceramic measuring ball for accurate pressure readings up to 30 psi, with an accuracy of ±0.015%. Supporting units like psi, bar, and kPa, it’s suitable for various calibration tasks. The self-regulating design stabilizes weights automatically, reducing manual adjustments and human error. It also includes small incremental weight sets for fine-tuning and a quick-leveling system for easy setup on uneven surfaces.

• Panametrics AT6-CABLE-4 100ft/ 30m AT600 Transducer Cable: Designed for the AT600 Ultrasonic Liquid Flow Meter and AT6 Transducers. It ensures accurate and reliable measurements in industrial applications by providing a robust connection for the precise transmission of ultrasonic signals essential for flow measurement.

FAQs

• What are the different types of pressure-measuring devices?
  Types include barometers for atmospheric pressure, manometers with liquid columns, Bourdon tubes and diaphragm gauges for mechanical measurement, piezometers for static liquid pressure, pressure transducers for electrical signals, and vacuum gauges for sub-atmospheric pressures.

• What are the types of flow measurement techniques?
  Methods include differential pressure flowmeters for pressure changes, positive displacement flowmeters for volume counting, and velocity-based flowmeters like turbine and ultrasonic types. Electromagnetic flowmeters suit conductive fluids, thermal flowmeters use heat transfer, and Coriolis mass flowmeters measure mass flow by detecting fluid momentum changes.

• What is the difference between absolute, gauge, and differential pressure?
  Absolute pressure is measured relative to a perfect vacuum, incorporating atmospheric pressure. Gauge pressure measures relative to ambient atmospheric pressure and can be positive or negative. Differential pressure assesses the difference between two pressure points, useful for applications like flow measurement and filter monitoring. Each measurement type is selected based on application requirements and reference points.

• What is the difference between mass flow and volumetric flow?
  Mass flow measures the amount of mass passing a point per unit of time, typically in kilograms per second (kg/s), and is crucial in processes where mass is more important than volume, like chemical reactions. Volumetric flow measures the volume passing a point per unit of time, usually in litres per second (L/s) or cubic meters per hour (m³/h), and is essential for applications like water distribution. The choice between the two depends on application requirements and fluid properties.

• How does a pressure transducer work?
  A pressure transducer converts pressure into an electrical signal for measurement and monitoring. It consists of a pressure-sensitive element, like a diaphragm or piezoelectric crystal, which deforms under pressure, causing changes in electrical properties such as resistance, capacitance, or voltage. This change is converted into a signal proportional to the applied pressure, enabling precise monitoring and control in applications from industrial processes to medical devices.

• What are flow instruments used for?
  Measure and monitor the flow rate of liquids and gases in various applications. They provide critical data for process control, ensuring efficient and safe system operation. In industrial settings, flow instruments manage raw materials, monitor chemical reactions, and control product distribution. Overall, flow instruments are vital for accuracy, efficiency, and safety across industries.

• How does a pressure sensor work?
  A pressure sensor converts physical pressure into an electrical signal for measurement and analysis. It contains a pressure-sensitive element, like a diaphragm or piezoelectric crystal, which deforms under pressure. This deformation alters an electrical property—such as resistance, capacitance, or voltage—depending on the sensor type.

• What are the advantages of using ultrasonic flow meters?
  Ultrasonic flow meters are favoured for their numerous advantages. Their non-intrusive design measures flow without direct contact with the fluid, mitigating contamination and wear. They deliver high accuracy and reliability, even under challenging conditions, and are versatile enough to handle a range of fluids—liquids and gases—across various flow rates and pipe sizes. With minimal maintenance needs due to the absence of moving parts, they reduce downtime and operational costs.

• How accurate are pressure gauges?
  The accuracy of pressure gauges varies based on design, quality, and application. High-quality industrial gauges typically offer accuracy within ±0.1% to ±1% of full-scale readings, suitable for critical measurements. Standard commercial gauges range from ±1% to ±2.5%, adequate for less demanding uses. Accuracy can be affected by temperature fluctuations, mechanical vibrations, and gauge age.