Matrix Orbital Corp

Posted: **Tue Jul 24, 2007 2:31 pm**

Is it possible to connect a D-Tek Inline Temp Probe to a MX 212?

The D-Tek Inline Temp Probe only has 2 cables and the MX 212 has 3 pins......

http://www.dtekcustoms.com/browseproduc ... Probe.HTML

Any help would be appreciated!

Posted: **Tue Jul 24, 2007 2:58 pm**

Hello Marquis,

Thanks for your post.

The temp probes supported by the MX series are Dallas 1-Wire devices. These come with 3 connections, +5V, Data and Gnd. If D-Tek's Inline Temp Probe is a Dallas 1-Wire device, then the MX series can support it.

I checked the link you gave but did not see that there are two wires to the Inline Temp Probe. Do you have some kind of data sheet?

Thanks,

Posted: **Tue Jul 24, 2007 3:02 pm**

That's pretty nice. We will incorporate support for it in the GX series in the future.

Posted: **Tue Jul 24, 2007 4:51 pm**

Thanks for your help guys, here's a photo of the inline probe...

As you can see it's only got 2 cables, it uses a standard 10k ohm thermistor -50 - 110 Deg C (320.2 - .7579 kohms).
Could not find any other details, will e-mail them for more info

Posted: **Mon Aug 13, 2007 1:49 pm**

I recall you can short two of the three legs on those dallas temp sensors, but the one you referenced uses a standard thermistor, not a 1-wire bus.

Posted: **Fri Sep 07, 2007 7:57 am**

A "1-Wire" device is digital. This sensor, since it uses a thermistor and is only two wires, is analog. Basically one wire on each end of a resistor that changes value with changes in temperature. You would need to set up a current source through this device then feed the resulting voltage drop to a D/A converter for measurement.