Variable force spring and variable torque spring are very similar with constant force spring and constant torque spring. But we diversify the radian by winding the steel strip into a coil. Therefore, it can unfold negative gradient, positive gradient compounded in a spring. Here are some relations between load (force or torque) and stroke that can be used on specific occasion.

Pen Type Drug Injector Application

The spring exerts constant force to keep the drug flow fixed, preventing the patient from feeling uncomfortable when applying it. It features stretch force in end...

In order to bring professional-quality measurement products to the Raspberry Pi platform, Measurement Computing has released a family of HATs (Hardware Attached on Top) specifically for professional Test and Measurement applications.

These devices provide data acquisition features in a small, stackable format with the same quality, comprehensive documentation and support MCC has provided for nearly 30 years.

The MCC 118 allows users to measure 8 channels of 12-bit voltage data at an overall throughput of 100 kS/s. The MCC 134 features...

A polarisation sensor makes details visible that remain hidden to other image sensors. IDS now offers the IMX250MZR 5 MP sensor from SONY with integrated on-pixel polarisers in the uEye CP camera family. The models ensure better object detection in cases of low contrast or light reflections. They also provide a convenient way of detecting fine scratches on surfaces or the stress distribution within transparent objects.

Both USB3 Vision and GigE Vision are available as interfaces. Using polarisation filters, the sensor generates an image with four polarisation directions...

The high-performance FLIR RS8500 thermal camera combines a mid-wave infrared detector and telescope in a single weatherproof housing built for measurement accuracy of long-range and high-temperature targets in harsh environments.

The RS8500 allows for superior measurement accuracy through a MWIR detector, which provides high-definition, large-format thermal images with the ability to deliver data up to 180 frames per second, coupled with a high-resolution, 120-1200-millimeter continuous metric zoom lens.

This new MWIR thermal camera provides the ability...

The new scanCONTROL 25xx laser profile scanners from Micro-Epsilon are specially designed for industrial measurement tasks. Compact design, versatility and high signal stability result in an excellent price/performance ratio especially for measurement tasks involving large quantities.

With three measuring ranges and comprehensive accessories including protective housings, cable types and interface converters, the scanCONTROL 25xx models are ideal for series integration in production lines and machine building.
The COMPACT laser profile...

Custom-made products are required whenever standard industrial cameras reach their limits. Especially for small projects, however, development and cost expenditure are often disproportionately high. Thanks to its flexible modular design principle, the new uEye ACP concept from IDS Imaging Development Systems GmbH enables individual, economical solutions to be created – even from single units. With just a few clicks, users can put together their own individual board level camera model using an online configurator and request a quote directly from the manufacturer.

Customers...

The miniaturized sensing heads are especially developed for the use in small and cramped surroundings and are perfect for applications with limited space, such as midgets instruments and engine constructions. The very advantageous cost-performance-ratio supports the integration of the pyrometers within OEM solutions and simultaneous use of the measurement devices at multiple infrared measuring facilities.

The compact series devices offer inimitable advantages for the installation in applications with high surrounding temperatures, such as within the plastic or paper industry. The...

The Micro-Epsilon eddyNCDT 3060 inductive measurement system is based on eddy currents and enables fast, precise displacement measurements in industrial environments. Based on ease of use and smart signal processing, this non-contact system defines a new performance class in inductive displacement measurement. More than 400 sensor models can be combined with the eddyNCDT 3060.

In contrast to conventional inductive sensors, displacement sensors based on eddy currents stand out due to their high accuracy, bandwidth and temperature stability. Furthermore, this measuring...

The new WebDAQ 904 is a stand-alone universal input data logger designed for remote monitoring and control. All the intelligence is built into the WebDAQ, eliminating the need for a PC or additional software. WebDAQ 904 features four 24-bit simultaneously sampled analog input channels, individually configurable for voltage (up to ±60V), current, RTD, thermocouples, resistance, and bridge-based sensors. 

Data can be recorded to the 3GB of internal storage, to external USB media or SD cards for virtually unlimited storage. By using the embedded WebDAQ web server, users can...

Measurement Computing adds a new member to its series of DAQ HATs - professional DAQ modules designed for the Raspberry Pi® platform. MCC 172 is a dual-channel module for acquiring IEPE sensor data.

MCC 172 accepts direct connection of piezoelectric sound & vibration sensors according to the popular IEPE standard. Data can be sampled simultaneously with 24-bit resolution and sampling rates up to 51.2 kS/s per channel. No additional signal conditioning will be required for acquiring aliasing-free signals up to 23 kHz. For higher channel count multiple DAQ HATs...