A new calibration setup for lock-in amplifiers in the low frequency range and its validation in a bilateral comparison

This paper addresses the calibration of lock-in amplifiers in the low frequency range. A simple but effective calibration setup implemented at INRIM is described. This includes a stable low-voltage source, composed of a digital sine wave generator and a cascade of two voltage dividers, one inductive and one resistive. The magnitude error is the lock-in magnitude error, which can be determined with an uncertainty of the order of 10 −4 or better, that is, two orders of magnitude lower than the…

Wireless Data Logger Troubleshooting

Wireless Data Logger Troubleshooting

There are various reasons why a wireless data logger may not appear in the MadgeTech 4 software through the RFC1000 wireless network, or experience communication issues. To ensure that the data logger is within range of the RFC1000 wireless network for troubleshooting purposes, the data logger should be in the same room as the computer […] Source: MadgeTech…

Yokogawa to Begin Offering OpreX Batch Solution with Enhanced Portfolio for Batch Plants

Yokogawa Electric Corporation (TOKYO: 6841) announces that it will begin providing the OpreX Batch Solution on March 17.Source: Yokogawa Electric Corporation…

Yokogawa Adds New Turbidity and Chlorine Analyzers to OpreX Analyzers Lineup

Yokogawa Electric Corporation (TOKYO: 6841) announces the addition of the TB820D right angle scattered light turbidity detector, FC800D non-reagent type free available chlorine sensor unit, RC800D reagent type residual chlorine sensor unit, FLXA402T liquid analyzer for turbidity and chlorine, and PG400 pulse generator for clean unit to its OpreX Analyzers lineup for water treatment facilities.Source: Yokogawa Electric Corporation…

Novel Biosensors for Real-Time Monitoring of Sugar Levels in Plant Tissues

The information from the sensors may help agriculture to adapt production as the world faces climate change. Source: What’s New in Measurement and Control?…

Absolute frequency of 87 Sr at 1.8 × 10 −16 uncertainty by reference to remote primary frequency standards

The optical lattice clock NICT-Sr1 regularly reports calibration measurements of the international timescale TAI. By comparing measurement results to the reports of eight primary frequency standards, we find the absolute frequency of the 87 Sr clock transition to be ##IMG## [http://ej.iop.org/images/0026-1394/58/2/025006/metabc232ieqn1.gif] {$f \left(\mathrm{S}\mathrm{r}\right)=429\enspace 228\enspace 004\enspace 229\enspace 873.082\left(76\right)\enspace \mathrm{H}\mathrm{z}$} , with a fractional uncertainty of less than 1.8 × 10 −16 approaching the systematic limits of the best realization of the SI second. Our result is consistent with other recent measurements and…

New Regulations in Effect for U.S

New Regulations in Effect for U.S. Egg Producers

There are big changes underway for the egg industry following the recent passage of the Egg Products Inspection Regulations. Since 1970, the USDA Food Safety and Inspection Services (FSIS) has been operating under the Egg Products Inspection Act (EPIA), but the new regulations will now bring egg products more in line with the safety standards applied to meat and poultry products. Source: MadgeTech…

New sensors could speed up construction schedules

How long it takes to construct a building depends in large part on when the concrete of each floor is strong enough to take on loads. Purdue University engineers have developed sensors that could safely speed up a construction timeline by determining concrete strength directly onsite in real time. Source: What’s New in Measurement and Control?…