The Yocto-PT100 is a USB temperature sensor. This is the most precise USB temperature measurement device that we offer. The module uses an external PT100 probe (not included) to make instant temperature measurements, and can also record measures on a built-in flash memory to read them later on through USB. A PT100 probe is used to measure the temperature at any specific place, including in a liquid, with a very high stability and a high precision (sensibility up to 0.01C and precision up to 0.03C at 0C when using a PT100 conforming to IEC 60751 DIN 1/10 B standard). It is particularly well suited for applications such as laboratory measurements, etc.

The Yocto-PT100 can be used with PT100 probes using 2, 3 or 4 wires. The type of connection is setup in software. To reach the highest precision, a 4-wires probe should be used. 3-wires probes are reasonably precise and not too much affected by wire lengths, contrarily to 2-wires probes which are the least precise and very sensitive to wire length.

The Yocto-PT100 features a built-in galvanic isolation between the USB control part and the PT100 measure circuit. It is therefore possible to use non-isolated PT100 probes, which are often more reactive and less expensive,

Given the number of variants of PT100 probes and their price, the Yocto-PT100 does not include any probe. The probe must be purchased separately at a specialized shop.

This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, to a WiFi network using a YoctoHub-Wireless-g, it can even be connected to a GSM network thanks to the YoctoHub-GSM.

Yocto-PT100 Yocto-PT100 Yocto-PT100 Enclosure available separately

USB cables and enclosure to be ordered separately.

CHF 90.56

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Manufacturer Product NumberPT100MK1
Product nameYocto-PT100
USB connectormicro-B
Refresh rate15Hz
Range (T)-200...325C
Supported Operating SystemsWindows, Linux (Intel + ARM), Mac OS X, Android
Driversno driver needed
API / SDK / Libraries (USB+TCP)C++, Objective-C, C#, VB .NET, Delphi, Python, Java/Android
API / SDK / Libraries (TCP only)Javascript, Node.js, PHP, Java
Suggested enclosureYoctoBox-Long-Thick-Black
Cables and enclosuresavailable separately
Made inSwitzerland

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Accessories and related products

YoctoBox-Long-Thick-Black, Enclosure for Yoctopuce device (long, thick, black)YoctoBox-Long-Thick-Transp, Enclosure for Yoctopuce device (long thick translucent)Fix-2.5mm, screws and spacersUSB-A-MicroB-30, A to micro-B USB data cable, 30cmUSB-A-MicroB-100, A to micro-B USB data cable, 100 cmYoctoHub-Ethernet, Ethernet-enabled hub for Yoctopuce modules


User manual (HTML)
User manual (PDF)
3D file (STEP)
Last Firmware24473 (06/20/2016)
Library for Javascript25534 (10/10/2016)
Library for PHP25534 (10/10/2016)
Library for Objective C25534 (10/10/2016)
Library for C++25534 (10/10/2016)
Library for C#25534 (10/10/2016)
Library for VisualBasic .NET25534 (10/10/2016)
Library for Delphi25534 (10/10/2016)
Library for Python25534 (10/10/2016)
Library for Java25534 (10/10/2016)
Library for Android25534 (10/10/2016)
Library for Command line25250 (08/23/2016)
Virtual Hub for Windows25730 (10/27/2016)
Virtual Hub for Linux, Intel + ARM25730 (10/27/2016)
Virtual Hub for Mac-OS-X25730 (10/27/2016)

Add a comment 4 comments

1 - jjarandato Wednesday,march 23,2016 6H05

This yocto-pt100 can be configure to measure a SPRT with constants that corresponse to ITS-90?

2 - mvuilleu (Yocto-Team)Wednesday,march 23,2016 6H30

@jjarandato There are 3 aspects to this question:
1) the absolute precision
2) the resistance range
3) the format of correction factors:

Regarding 1, the absolute precision of this device has been verified to match the requirements for Secondary SPRTs (0.03C), but we have not checked for a higher precision. If you really need 0.001C, you will probably need a more precise device, I doubt we can be as precise in absolute value.

Regarding 2, this device applies the resistance-to-temperature function for PT100. If you need to use SPRT in the ~25 Ohm range, you could work from the measured resistance value (without using the internal mapping), but you will be out of the sweet spot of the device for resistance measurement and will probably loose a bit of precision

Regarding 3, the device features a built-in mechanism for 5-points linear calibration function, but not another more specific format

3 - tetaran Thursday,april 21,2016 18H09

I'm curious if its possible to use your PT100 with 44212EC sensor without major modifications and to still expect 0.1C accuracy.

4 - mvuilleu (Yocto-Team)Thursday,april 21,2016 19H01

@tetaran: The 44212EC sensor is not a PT100, it is a combination of thermistors using different resistance values. It might be possible to read it using a Yocto-Thermistor, but I am not even sure as I have not digged into the magic of this thermilinear network...

Yoctopuce, get your stuff connected.