Hydraulic deadweight tester for pressure instrument calibration
March 2022Pressure Measurement & Control
Maintenance, Test & Measurement, Calibration
Deadweight testers are accepted as the most accurate method for the calibration of electronic or mechanical pressure measuring devices. Instrotech is offering the LR-Cal LDW series of deadweight testers, which are available in ranges from 10 bar up to 1400 bar.
The direct measurement of pressure (according to its definition as a quotient of force and area) ensures high accuracies and long-term stability. These testers are used extensively in calibration laboratories in industry, standards institutes and research facilities.
The LDW series is ideally suited to on-site use as well as for service and maintenance purposes. The customised assembly allows for the setting up of a complete, compact system consisting of a universal basement and the measuring systems (piston/cylinder units). The high-quality piston/cylinder units are manufactured from tungsten carbide, which is known for its low temperature coefficient of expansion. Fast and uncomplicated changes of the measuring range are possible using a flat spanner.
In order to generate the individual test points, the piston/cylinder system is weighted with mass loads which are also calibrated and specially adapted to the required application. The basement is fitted with the corresponding system, depending on the measuring range of the device under test. The pressure is set via an integrated pump or, if an external pressure supply is available, via control valves (pneumatic models).
For fine adjustment, an adjustable volume with precision spindle is available. The weight applied is proportional to the desired pressure and provided by using optimally graduated weights. As soon as the measuring system reaches equilibrium, there is a balance of forces between pressure and wheel weights. Due to the high quality of the system, this pressure remains stable over several minutes so that, for instance, adjustments of the device under test can be carried out without any problems.
For users who require a digital pressure display for connection to the deadweight tester, Instrotech can supply the Keller Leo2 that offers accuracy of 0,1%. An intrinsically safe version is also available.
When digital twins move from concept to critical tool
IT in Manufacturing System Integration & Control Systems Design Maintenance, Test & Measurement, Calibration
Digital twins are moving out of the lab and onto the mine, the factory floor and the transport network where they predict failures before they happen. Amritesh Anand looks at where they earn their keep, the data and integration work behind them, and the security questions every organisation should ask before switching one on.
Read more...VEGA pressure instrumentation supports resilient water network management VEGA Controls SA
Pressure Measurement & Control Flow Measurement & Control
As rapid urbanisation and climate pressures strain water networks across Africa, accurate real-time pressure monitoring has become a strategic necessity. VEGA’s pressure instrumentation helps utilities reduce losses, protect infrastructure and meet sustainability targets.
Read more...Field calibration made easy Instrotech
Maintenance, Test & Measurement, Calibration
Instrotech’s locally designed and manufactured Calog calibrator range feature a rugged IP54-rated housing, backlit display with data logging via SD card, and a lithium-ion battery with approximately eight hours of run time.
Read more...Groundwater level measurement using LoRa module Instrotech
Level Measurement & Control
Monitoring groundwater levels across large industrial sites is critical. Salzgitter Digital Solution was tasked with developing a fully automated and digital monitoring system using Long Range Wide Area Network technology.
Read more...Infrared solutions for glass manufacturing challenges Instrotech
Temperature Measurement
In the glass industry, infrared temperature monitoring is crucial for maintaining product quality and process efficiency. Instrotech has infrared sensors and cameras which provide non-contact temperature measurements, making them ideal for these high-temperature environments.
Read more...Embracing digital precision in instrument manufacturing SA Gauge
Pressure Measurement & Control
In modern instrumentation manufacturing, precision is no longer limited to measurement alone. One area undergoing notable change is the printing of instrument plates and branded components.
Read more...Senix sensors provide flood warnings Instrotech
Flow Measurement & Control
To create the world’s most sophisticated flood monitoring and forecasting system, the US State of Iowa’s Flood Centre (IFC) uses more than 200 Senix ToughSonic 30 and ToughSonic 50 ultrasonic sensors to measure water levels in streams across the state.
Read more...Sensors measure palm oil tank level Instrotech
Level Measurement & Control
The Senix ToughSonic 30 accurately measures and monitors the level of palm oil in large tanks approximately nine metres in height.
Read more...Water under pressure VEGA Controls SA
Pressure Measurement & Control
The need for real-time monitoring and precise control over water distribution has never been more critical. VEGA’s range of pressure sensors and level instruments plays an important role in ensuring that water systems operate efficiently.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version