Electron Paramagnetic Resonance Imaging (EPRI) Measuring of Tumor Oxygen Levels
Electron Paramagnetic Resonance Imaging (EPRI) Measuring of Tumor Oxygen Levels Customer Case The customer is improving their Electron Paramagnetic Resonance Imaging (EPRI) system that is used for the diagnosis of tumors. Using this non-invasive method, the concentration of oxygen in living tissues can be determined without the need for biopsies. Tumors that have little or no oxygen content (i.e. hypoxia) also have increased resistance to radio-frequency radiation, making it less effective as a choice for cancer treatment. Identifying those patients with hypoxic tumors allow alternative treatments to be used instead. The requirement is to capture the returned RF signals [...]
Digital Accumeasure Gen 3 Reduces Noise and Increases Resolution
MTI Instruments is announcing a third-generation digital capacitance displacement gauge with lower noise and an industry-leading resolution. The Digital Accumeasure DSeries Gen 3 provides up to 0.01% FST linearity and is designed for measuring gap, vibration, and positioning. In both analog and digital systems, noise is an unwanted disturbance that distorts or interferes with a desired electrical signal. MTI’s Digital Accumeasure Gen 3 is a lower-noise amplifier than the Gen 2 and features sub-nanometer resolution for highly-precise measurements. Using state-of-the-art technology, the Digital Accumeasure DSeries Gen 3 converts a highly-reliable capacitive electric field measurement (displacement) directly into a highly-precise [...]
Transmission Electron Microscopy for Imaging of Biological Molecules
Transmission Electron Microscopy for Imaging of Biological Molecules Customer Case The customer is improving their customized Transmission Electron Microscope (TEM) that is optimized for imaging unstained biological molecules with minimal radiation damage. Diffraction-limited resolution of 0.25 nm is routinely obtained with a cold field-emission electron-gun operating at 40 keV. The sample is maintained at about 123 K (i.e. -150°C), both to eliminate contamination and to reduce mass-loss. The scan raster is 512 x 512 points with a dwell time of 30 microseconds per pixel (over 8.5 seconds per raster-scan). For most mass measurements, the pixels are separated by 1 [...]
Treadmill Power Glitch Monitoring
Treadmill Power Glitch Monitoring Customer Case A customer develops gym equipment such as treadmills. The requirement is for an inexpensive way to monitor voltage signals for long periods of time. The treadmills are controlled by microprocessors that drive the LED displays. The customer has observed that some units intermittently fail during testing, a condition known as a "glitch" or a "brown-out". A glitch can have many causes, one of which is a weak power supply. The customer needs to capture certain key signals when a glitch occurs. At that stage, based on the captured data, it can be determined [...]
Vitrek Completes Acquisition of XiTRON Technologies Brand and Product Lines
Vitrek Completes Acquistion of XiTRON Technologies Brand and Product Lines Acquisition broadens Vitrek’s power analyzer portfolio and adds range of complementary products; expands customer base with limited overlap; adds domestic and international representation and distribution channels. […]
Capacitive Displacement Sensors: Working Principle & Precision Measurement Applications
Capacitive Displacement Sensors: Working Principle & Precision Measurement Applications Capacitive displacement sensors are precision non-contact measurement devices that utilize capacitance changes to determine position, distance, and thickness with exceptional accuracy. These capacitive distance sensors offer superior performance in applications requiring high-resolution measurements, making them essential tools across manufacturing, automation, and research industries. How Capacitive Displacement Sensors Work Capacitive Sensor Working Principle Capacitive displacement sensors operate on the fundamental principle of measuring capacitance variations between two conductive surfaces. The sensor probe acts as one plate of a parallel plate capacitor, while the [...]
White Paper: Fundamentals of Electrical Safety Testing
Part 1 - Functions & Features of Advanced Hipot Testers Introduction Electrical safety testers - often referred to as "hipot" testers - are an integral part of electrical and electronic equipment manufacturing. Hipot testers get their name from the high potential (high voltage) they produce to perform dielectric withstand and insulation resistance tests. In addition to these tests, many hipot testers provide accurate low-resistance measurements and low-resistance/high-current outputs to test ground resistance and ground bond integrity. Hipot testing has long been a standard procedure for assuring the electrical safety of electronic equipment. Early commercial hipot testers were actually not [...]
Vitrek Introduces Glen Broderick as New Western Regional Sales Manager
Vitrek Introduces Glen Broderick as New Western Regional Sales Manager Industry professional brings industry expertise as company grows its high performance line of hipot testers, precision high-voltage meters and power analyzers. […]
Functions & Features of Advanced Hipot Testers – as published in Test & Measurement Tips – 6/18
Functions and Features of Advanced Hipot Testers June 18, 2018 by Lee Teschler Modern instruments help to check whether manufactured equipment meets the proliferating variety of international safety standards that govern factors such as grounding and the ability to withstand overvoltages. KEVIN CLARK, VITREK Electrical safety testers — often referred to as hipot testers — are an integral part of electrical and electronic equipment manufacturing. Hipot testers get thei name from the high-potential (high voltage) they produce to perform dielectric withstand and insulation resistance tests. In addition to these tests, many hipot testers provide accurate low-resistance measurements and low-resistance/high current [...]
Vendors Support Hipot, Insulation-Resistance and Ground-Bond Tests- as seen in Rick’s Blog on the EE Website – 7/18
Vendors Support Hipot, Insulation-Resistance and Ground Bond Tests by Rick Nelson - Evaluation Engineering - July 2018 To meet the requirements of your electrical safety testing applications, you can choose from a variety of instruments and systems that perform hipot, insulation resistance (IR), ground-resistance and ground-bond (GB) tests across a range of industries. Vendors offer a variety of options — from software that automates instrument control and records test results to a variety of test probes and leads. Relevant standards range from IEC 60601-11 for medical device testing to IEEE Std 43-20132 for testing the insulation resistance of electrical machinery. [...]