Questions tagged [sensor]
The sensor tag has no usage guidance.
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How to calculate composition of alcohol/water mixture to achieve given concentration of alcohol vapors in air for calibrating a DIY breathalyzer?
I made a breathalyzer using a MiCS-5524 gas sensor. I would like to calibrate it so it can be close to accurate. e2v technologies — MiCS Application Note 4, Using MiCS Sensors for Alcohol Detection (...
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Ozone sensor with range above 5ppm?
I am attempting to find or build a sensor for controlling an ozone generator. To do this, the sensor will need to see the range of at least 0 to 5% (50000ppm). The commercially available sensors I ...
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How the optical fibre pH microsensors work?
Just browsed through the chemical sensor products of the company, called PreSens (https://www.presens.de/products/ph/sensors) in order to look for a precise method to measure pH change in a ...
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pH sensor showing incorrect measurement after using on acidic solution
I recently acquired an electrode pH sensor for a project of mine. After calibrating the sensor I used it on tap water and then lemon water to test their respective pH. After finding the pH of the ...
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How carbon nanotube sensors works?
How carbon nanotube sensors works?
Is the protein (or chemical compound used as part of the sensor) placed inside the tube or where is it placed? and how is the technology used to place the protein ...
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Sensitivity vs. Limit of Detection of rapid antigen tests
I'm comparing a bunch of SARS-CoV2 rapid antigen tests:
Columns 4 and 6 list the values for sensitivity and limit of detection (LOD). How come that a test with a several times lower limit of ...
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How to measure chlorine content using ORP sensor?
In my project I need to measure pH, turbidity, and chlorine level of treated drinking water. I found sensors for measuring pH, turbidity, and also chlorine.
The actual problem begins is that the cost ...
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Tools like Litmus Paper
Litmus papers are used to test acidity and alkalinity of a fluid. Are there other paper-based tools to test for other stuff like dissolved oxygen, presence of toxicity, electric potential etc?
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How much glucose oxidase is usually deposited on a glucometer strip?
The concentration of serum glucose is on average roughly around 5 mmol/L and let's say a typical blood droplet applied to a glucometer is 1μL. We are therefore depositing 5 nmol of glucose on the test ...
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