The Yocto-4-20mA-Tx is a USB 4-20mA signal generator. With this device, you can drive any other device featuring a 4-20mA input. This is an isolated device: the USB part is electrically isolated from the current loop part. The Yocto-4-20mA-Tx can drive any current loop powered from 12 to 24V with a 0.1% accuracy. Icing on the cake, the device can detect if the loop is properly powered or not.
This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, to a WiFi network using a YoctoHub-Wireless-n and to a GSM network using a YoctoHub-GSM.
USB cables and enclosures to be ordered separately.
Hi, i need to control a signal generator control mounted on a proportional gas valve, this signal generator need a 4-20mA signal, can connect direcly to the yocto module?
@etnaroaster yes, this is exactly the intended purpose of this device. Just be aware that the device is not designed for explosive atmosphere (not ATEX certified), so don't use it in a place where there could be explosive gas.
Perfect, it's possible to create with your partnership with Artisan Roaster Scope a code to command this module directly from artisan (the button function)?
@etnaroaster Is this gas valve part of a standard roasting equipment or is this a custom setup ? For a custom setup, the requirement might be a bit specific, and I am not sure that the development of Artisan can justify the effort...
This valve part its a piece of a custom setup. Artisan already can control phidget module for control dc servo motor with events/button to setup airflow directly from there
@etnaroaster we just had a short mail exchange with the author of Artisan software, and he is OK to add support for Yoctopuce actuators, including the Yocto-4-20mA-Tx. However he is currently very busy working in a new release so that will not happen before June or July.
oh! Thanks a lot! it's so perfect! We wait the delivery the module to start the first tests with the valve, i keep you updated..
Hi mvuilleu, i do the integration of yocto 4-20tx/module gas/roasting machine and works all very very whell, but for now control the module from the hub it's very fastidious, we need, to finish all setup and do a final project, the integration with artisan..
@etnaroaster: we have no control over Artisan development, you should contact the author directly :-)
I Know, but @mvuilleu write some different..read up
@etnaroaster I wrote what I was told, but as martinm wrote above, we are not in charge of Artisan. All we can do is provide devices to facilitate Artisan development, but the development schedule of Artisan is in the sole hands of the Artisan developers
someone writed some little windows program with simple buttons to change easly the mA value?
@etnaroaster: We do not have such graphical application, but we have many tutorials that explain how to build such application (https://www.yoctopuce.com/EN/tutorials.php). Also, all our programing libraries have an example that let you change the voltage of the current loop.
If you do not want to write your own application, you can use the command line API as explained in the chapter 6 section 3 of the documentation of the Yocto-4-20mA-Tx.
Alternatively, you can use the web interface of the VirtualHub to change the output voltage.
@etnaroaster: support for the the Yocto 4-20ma-tx module has just be added to Artisan. Beta builds of the upcoming v2.1.3 including the support are available here:
Documentation can be found here: https://artisan-scope.org/devices/yoctopuce/
What is the maximum update rate and analog bandwidth of this product? And is there a spec for latency/settling time?
In our application this product is going to simulate (replace) a sensor with bandwidth 0.5 Hz, but having some margin to drive the current loop up to 5 Hz at update rate 50 Hz would be ideal.
@renaat : the Yocto-4-20mA-TX is quite slow
Max update rate : ~5Hz
Settling time : ~1ms
Latency : ~150ms