Common question. New planet. It’s April and in the Gale Crater, where the Curiosity rover is currently exploring, that means early autumn temperatures: highs around 10°F and lows less than -100°F reported from its Rover Environmental Monitoring Station (REMS). In addition to air and ground temperatures around the rover, other measurements include atmospheric pressure, humidity […]
Temperature
Using optical fibers for temperature measurement, Part 3: Variations
Among the many ways to sense temperature, combinations of advanced optical principles used with optical fibers offer very different approaches, with application advantages and implementation limitations. The previous part of this article looked at two approaches to using optical fibers for temperature sensing based on the fiber Bragg grating (FBG) and the Mach-Zehnder interferometer (MZI). […]
Using optical fibers for temperature measurement, Part 2: Principles
Among the many ways to sense temperature, combinations of advanced optical principles used with optical fibers offer very different approaches, with application advantages but also implementation limitations. The first part of this article discussed general issues of sensing of physical parameters, especially temperature, and total internal reflection in optical fibers. This section will look at […]
Using optical fibers for temperature measurement, Part 1: Context
Among the many ways to sense temperature, combinations of advanced optical principles used with optical fibers offer very different approaches, with application advantages and implementation limitations. Temperature is the most widely sensed physical parameter; it’s that simple. What’s not simple is the many ways we have of measuring it through the use of sensors such […]
MEMs device integrated with MCU-based measuring electronics in compact PCB assembly
Posifa Technologies introduced its new PVC4000 series MEMS Pirani vacuum transducer. Designed for cost-effective OEM integration, the device consists of a surface-mount MEMS Pirani sensor and microcontroller-based measuring electronics — all packaged in an ultra-compact PCB assembly featuring a connector-terminated wire harness. The PVC4000’s sensor element is based on Posifa’s second-generation MEMS thermal conduction chip, […]
Non-contact reflective object sensor targets industrial automation applications
TT Electronics announced its new OPB735 series Reflective Object Sensors for the most challenging industrial automation and safety applications. This reflective sensor features hermetically sealed components offering designers a wide operating temperature range of -55°C to 100°C to suit almost any factory setting. Designed to produce extremely low cross-talk or noise signals, this product provides users with reliable and […]
Calibrated and ISO 17025-certified sensors for drugs and perishable goods transportation
Sensirion has announced its new calibrated and ISO 17025-certified humidity and temperature sensors. These sensors enable customers to achieve cost-efficient GDP-compliant supply chain monitoring of drugs, vaccines, and perishable goods. Highly regulated products, such as pharmaceutical or perishable goods, typically require special handling along their distribution chain to comply with several directives. Manufacturers are obligated […]
4-in-1 MEMS sensor measures gases, humidity, temperature and barometric pressure
Whether at home, in the office, or outdoors, we need to be confident that the air around us is clean and safe to breathe – COVID-19 has clearly highlighted the importance of air quality. Due to the particulates, gases, and even airborne viruses ubiquitously present in our modern environment, poor air quality has an increasingly […]
How can the new temperature-sensitive COVID-19 vaccines’ temperatures be ensured?
The newly developed COVID-19 vaccines require low temperature storage to ensure their efficacy. For the Pfizer-BioNTech vaccine, the U.S. Centers for Disease Control and Prevention (CDC) specifically states that it should be stored in an ultra-cold freezer, thermal shipping container or refrigerator. The ultra-cold freezer’s temperature should be maintained between -80°C and -60°C (-112°F and […]
Torque sensors feature non-contact technology
Saelig Company, Inc. has introduced the Sensor Technology TorqSense SGR510/520 Torque Sensors which use a four-element strain gauge bridge design with non-contact surface acoustic wave (SAW) detection. These sensors offer a 250% over-range reading capacity, allowing sudden spikes in torque to be measured and recorded accurately without clipping. The new design compensates for extraneous, inadvertent forces such as bending […]
