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List Price: $219.00
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Description

This book brings together concepts and approaches from the fields of photogrammetry and computer vision. In particular, it examines techniques relating to quantitative image analysis, such as orientation, camera modelling, system calibration, self-calibration and error handling. The chapters have been contributed by experts in the relevant fields, and there are examples from automated inspection systems and other real-world cases. The book provides study material for students, researchers, developers and practitioners.

List Price: $239.00
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Methodology for the Digital Calibration of Analog Circuits and Systems shows how to relax the extreme design constraints in analog circuits, allowing the realization of high-precision systems even with low-performance components. A complete methodology is proposed, and three applications are detailed. To start with, an in-depth analysis of existing compensation techniques for analog circuit imperfections is carried out. The M/2+M sub-binary digital-to-analog converter is thoroughly studied, and the use of this very low-area circuit in conjunction with a successive approximations algorithm for digital compensation is described. A complete methodology based on this compensation circuit and algorithm is then proposed. The detection and correction of analog circuit imperfections is studied, and a simulation tool allowing the transparent simulation of analog circuits with automatic compensation blocks is introduced. The first application shows how the sub-binary M/2+M structure can be employed as a conventional digital-to-analog converter if two calibration and radix conversion algorithms are implemented. The second application, a SOI 1T DRAM, is then presented. A digital algorithm chooses a suitable reference value that compensates several circuit imperfections together, from the sense amplifier offset to the dispersion of the memory read currents. The third application is the calibration of the sensitivity of a current measurement microsystem based on a Hall magnetic field sensor. Using a variant of the chopper modulation, the spinning current technique, combined with a second modulation of a reference signal, the sensitivity of the complete system is continuously measured without interrupting normal operation. A thermal drift lower than 50 ppm/°C is achieved, which is 6 to 10 times less than in state-of-the-art implementations. Furthermore, the calibration technique also compensates drifts due to mechanical stresses and ageing.

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General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.

Features

• Highest quality electronic meter reference solutions
• For meters using the NaCl scale
• Each batch is checked to ensure calibration

List Price: $13.99
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Hydrofarm hmdc1000 1000ppm calibration solution

Features

• Calibration solution
• Sealed with a coated foam liner
• Lightweight HDPE plastic bottle
• 1000ppm

List Price: $21.50
Sale Price: $18.00
You save: $3.50 (16%)

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Description

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.

Features

• Highest quality electronic meter reference solutions
• For meters using the NaCl scale
• Each batch is checked to ensure calibration

List Price: $169.99
Sale Price: $169.00
You save: $0.99 (1%)

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Description

Spyder4Pro was designed for advanced photographers that require a higher accuracy of color in their digital workflow. It can calibrate multiple displays and includes an ambient light sensor to adjust display luminance. It has Monitor Quality Analysis tools to help fine tune your displays. Step up to a higher level of control!

Features

• Automated Color and Brightness Calibration
• Full-spectrum color sensor
• Single sensor calibrates multiple displays
• Improved accuracy and stability - The fourth-generation Spyders have double-shielded color filters for even closer match to CIE color standards and improved long term stability. Average accuracy is up 26% and consistency between Spyder units is 19% better.
• Fast Re-calibration Assistant - The ReCAL feature makes it quick and easy to recalibrate your display to compensate for changes over time.

List Price: $229.99
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Description

NeatReceipts works where you work - weighing in at less than a pound and powered by USB, NeatReceipts is the perfect tool at work, at home or on the go. NeatReceipts helps you free the information that's trapped in your documents, so you can organize, store, secure and activate it. Scan receipts for expense reports, digitize business cards, prep for taxes (IRS accepts NR scans in lieu of actual receipts!), manage documents. You can even export data, scan to PDF, use Smart Sorting to help organize your files, and convert your scans to editable text.

Features

• All new proprietary industrial design and software
• Automatically extracts key information from scanned receipts; can export to Excel, Quickbooks, TaxCut, and more
• Scans are IRS-accepted digital copies, making tax preparation a snap
• USB interface also provides power so no AC adapter needed
• Highly portable

List Price: $32.97
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Description

Milwaukee offers a wide range of calibration, maintenance, and cleaning solutions. The use of calibration and cleaning solutions is fundamental for the correct use of electrodes, and for obtaining the most accurate and reproducible readings. Often readings are not correct because the sensors have not been properly handled or maintained.pH 4.01 Buffer Solution. 20 ml.

Sale Price: $5.55

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Description

Hanna's Buffer solutions are made from established formulas and are standardized with a pH meter that is calibrated to NBS/NIST primary standard buffer solutions. The 20 mL sachets are ideal for infrequent calibrations while for heavy-duty applications, you can choose from the popular 230 mL, 1 liter or 1 gallon containers. Now the pH 4 buffers carry lot #, expiry date as well as pH/C chart on every bottle. HI 7004L/C and HI 8004L/C are also supplied with an analysis certificate.