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ELECTRONICS EMBEDDED TUTORIALS

PT100 Temperature Sensor Table & How To Use It

In this article, we will be taking a look at the PT100 Temperature Sensor Table. So using this table, we can see how the resistance of PT100 changes with temperature.

But before we do that, we first need to know what a PT100 temperature sensor is and how it works. Right? Because having a clear idea about what this sensor is will help us know how to use it. Does that make sense? Great! Then let us start from there!

What Is PT100 Temperature Sensor?

PT100 temperature sensor is a sensor that that is made from Platinum. But what does it do? Well, we can use PT100 sensor to measure the temperature around it. So in a way, it can act like a thermometer!

Wait a second. How does a sensor made of Platinum work as a thermometer?

How does it work?

So here is the thing. A pure metal like platinum has a unique feature in that it’s resistance increases with an increase in temperature. So by just measuring the resistance across it, we can map it to it’s corresponding temperature!

Now that sounds great right? Because now just my checking the resistance of this sensor, we can tell what the temperature is. How cool is that!

But why does the Platinum behave this way? What makes it change its resistance based on the temperature?

Well, to answer this question, we need to know a little bit of the chemical structure of Platinum.

First thing first, we need to know that Platinum is a pure metal. Because of this, an electric current can flow easily through it. Alright?

So everything should work fine when you are passing current through it then, right? Well, not really!

Why? Because this free flow of electrons in Platinum is affected by the temperature around it.

You see, a metal like Platinum is made up of crystals. And these crystals starts vibrating as the temperature increases. So this increase in vibration in turn will slow down the flow of electrons!

So there you have it! This is the reason why Platinum will conduct less current as temperature increases.

So PT100 temperature sensor that is built using Platinum will take advantage of this feature. And hence, we can use it to measure resistance across it to determine the temperature!

Now that is a very nifty way to take advantage of this feature right? I mean you are measuring temperature around you by just checking resistance of a sensor. How cool is that!

So now that we know how a PT100 temperature sensor works, it is time for us to look at the PT100 Temperature Sensor Table.

What Is A PT100 Temperature Sensor Table

So as we learnt, PT100 temperature sensor’s resistance increases with increase in temperature. Right? So just by measuring the resistance across it, we can tell what the temperature around it is. Right?

But what is the formula we need to use to convert a resistance to temperature? That is when the temperature sensor table comes in handy!

So simply put, this PT100 temperature sensor table will help us map between a resistance value and it’s respective temperature. No formula required then! That is great right.

So how does this PT100 temperature sensor table look like then? Well, take a look at it for yourself:

Temperature (In Degree Celsius)Resistance (In Ohms)
-20018.52
-10060.26
0100
100138.5
200175.85
300212.05
400247.10
500281
600313.72
700345.29
800375.71
850390.49
PT100 Temperature Sensor Table

So as you can see, there is a simple mapping between the temperature and resistance. You can then use this table as a reference to measure the current temperature across a PT100 sensor.

But before we go, did you notice one important thing in the PT100 Temperature Sensor Table? Can you spot it?

PT100 Temperature Sensor Table
PT100 Temperature Sensor Table Image File

So if you did find that the resistance is at 100 Ohms when the temperature is at zero degree Celsius, then yes! You got hat right!

Now that is an important feature of the Pt100 temperature sensor. So its resistance is always at 100 Ohms when it is working at a temperature of 0 degree centigrade. It is a good thing to keep that in mind when working with this sensor!

Conclusion

So there you have it. Because that is all there is for you to know about PT100 sensor.

But if you still have any questions about it, do let me know in the comment section below and I will be happy to help!

So with that, I will end this article now. Have a great day you all! 🙂

Categories
ARDUINO ARM ARM ARCHITECTURE ARM PROGRAMMING COMPUTER HARDWARE ELECTRONICS EMBEDDED EMBEDDED COMPUTERS EMBEDDED PROGRAMMING HARDWARE IOT PROGRAMMING TUTORIALS

Arduino Portenta Technical Specification & Price

In this article, we will take a look at the technical specification of Arduino Portenta. But along with this, we will also learn about its price during its release date.

Just today, Arduino launched its new product called “Arduino Portenta” at CES 2020 show in Las Vegas. So far from what I have learnt, it is an IoT device. Which means that you can use it to connect things in your house to the internet!

But not just that! The company is also claiming that we can use Arduino Portenta even in industrial applications.

Ok, all this is fine. But why do we even need this device in the first place? To answer this question, we first need to discuss the technical details of Arduino Portenta. So let us first do that!

Arduino Portenta H7 Technical Specification

Arduino Portenta H7 Processor

The Arduino Portenta H7 is driven by the ST Microelectronics’ STM32H747XI low power processor. This processor is made up of dual ARM Cortex cores.

The first ARM core present in it is a Cortex-M7 running at 480 MHz. On the other hand, the second ARM core is made up of Cortex-M4 and running at 240 MHz. So with these two cores together, this ARM processor is able to run Arduino code, Python and Javascript code as well!

Now this is very interesting! Since it can run Javascript, many of the web developers will be able to work on it!

What OS does the Portenta H7 run?

We got to know that Portenta H7 is running on Arm’s Mbed OS! This is amazing! Being able to run an embedded operating system will mean we can make use of all the resources efficiently!

What type of connectivity does the Portenta H7 have?

Arduino mentioned that they support all the standard connectivity we can expect. So that means it has support for Bluetooth Low Energy, WiFi and LTE as well!

UPDATE On The Radio Module Of Arduino Portenta

We just got to know that the Arduino Portenta features a Murata 1DX dual WiFi 802.11 chipset. This chipset also has support for Bluetooth 5.1 BR/EDR/LE!

Arduino Portenta H7 with Technical Specification and release date
Arduino Portenta H7 IoT Module

What GPU Type Can We Find In Arduino Portenta H7?

The technical specification of the Arduino Portenta H7 mentions that it features a Chrom-ART graphical hardware accelerator.

What does the technical specification say about Timers in Arduino Portenta H7?

Alright guys. We know that in order for us to work with any time sensitive operation we need support of timers. So how does we score here? Well luckily on the timer front, the board has a total of 22 watchdogs and general purpose timers in it. So we have all the room to take its advantages!

But what about the UART ports in Portenta H7?

Ofcourse even though we have moved towards wireless connectivity, we still need good old UART ports for many reasons. So how do we fare on this front? Well the Arduino Portenta H7 strikes back once again! It is exposing a total of 4 UART Ports. And among these 4 ports, two of the UART ports have support for flow control.

How many connectors are exposed on the Arduino Portenta H7 board?

The Arduino Portenta H7 board exposes a total of 160 pin connectors. These connectors are grouped into two 80 pin sets and will expose all the peripherals present in the Portenta H7 board.

What type of USB does Arduino Portenta H7 support?

On the USB front, Arduino Portenta H7 exposes a USB Type C connector. This USB-C connector has support for host/device, displayPort out. It can operate at high speed or full speed USB protocol configuration. The Portenta H7 USB-C also supports Power delivery.

What is the operating temperature range of Arduino Portenta H7?

Arduino Portenta H7 can operate at a temperature range lying between -40 °C to +85 °C when running without the wireless module. But with the wireless module, Portenta H7 can operate in the temperature zone of  -10 °C to +55 °C.

What is the operating voltage of Arduino Portenta H7 acccording to its technical specification?

Arduino Portenta H7 works at 3.3 Volts.

What type of battery does Portenta H7 support?

The Arduino Portenta H7 runs on a Li-Po battery. This battery has an operating voltage of 3.7 Volts and a discharge rating of 7000mAh.

Does Arduino Portenta H7 support an SD Card?

Yes it does! The Portenta board has an SD card interface support. However, this SD Card interface is available only through an expansion port. So that is a bit of a bummer! 🙁

But now that we know the Arduino Portenta H7 technical specification, when will it Release?

I know I know. No matter how good the device is, we cannot take advantage of it until it gets in our hands, right? So we can understand when you are eager to know when this module is going to be released.

So from what we got to know, Arduino Portenta H7 is already made availale for beta testers. But it is going to become available for everyone by February 2020! Guys, that means we are just a month away from getting hold of it in our hands!

Now that we went through it’s technical specification, What will be the price of Arduino Portenta H7?

Cool! So now that we know we can get hold of Portenta by next month, our next question is obviously this.

How much it is going to cost?

Unfortunately at this point in time, I could not find an answer (Look for update at the end of this article for pricing information) for this. So I will continue to look out for this information. Once I find it, I will revisit this article and update it with the latest price. But until then, I can only leave you guessing about it.

But on the other hand, if you have any idea about it, let me know in the comments below. And not just that, if you have any other information about Portenta H7 in general that I have missed here, do let me know. In this way, I can update this article in the future for others to benefit out of it.

So there you have it. I have shared all the information I had about Arduino Portenta H7 here. While for me this device is something I am eagerly looking forward to, I wish it had a better name. Somehow for me, the name Portenta H7 is becoming difficult to remember. But may be it is just me I guess.

So any case, I will end this article at this point. So see you guys again in the next article. Until then, take care! 🙂

Latest Update On Arduino Portenta Price

We just got to know that Arduino Portenta will cost USD 99.90 + Tax.

So the cost of Arduino Portenta in the US will be $100 + taxes

The cost of Arduino Portenta in the UK will be around GBP 77 + taxes

The cost of Arduino Portenta in the European countries will be around 90 + taxes Euros

And finally the cost of Arduino Portenta in India will be around Rs.7200 + taxes