VDO Viewline Pyrometer installation

[Brian Fitzpatrick]

I am installing 2 VDO Viewline Pyrometers (A2C 5351 0907S also know as A2C 5951 2332) for my Yanmar 6LY2A-STC engines.

VDO sells a kit for it, but it very expensive. https://www.vdo-gauges.com/instruments-displays-and-clusters/by-type/pyrometer/viewline-onyx-1600-deg-f-pyrometer-12v-with-vdo-sender.html

What I need is the Theromocouples and some extension wire (about 20 Feet for each engine).

I saw the SMX EGT Pyro thermocouple and was wondering if it will work with the gauge?

Is there any thing special I would need to know about the extension wire?

Thank you.

Topic

[Tony Athens]

You now know nor than I do on this.. Go for it..

[Gene Fuller]

The VDO documents mention yellow and red as the thermocouple wire colors. Also, the range of the gauge is up to 1650 F.

Both of these would indicate Type K.

The extension wire is not too critical as long as all the connections are kept at the same temperature. The accuracy will be degraded a bit, but that may not be too important in this application. Trends are probably more important than absolute numbers.

Disclaimer: I have worked a lot with thermocouples in an industrial laboratory setting, but not as a mechanic or engine specialist.

[Tony Athens]

Thermocouple type–Saving a few bucks

The only answer to your ?? will come come a complete spec for the type of thermocouple the VDO gage uses.. A quick peek at the spec sheet did not show the specs.

A easy Google Search yielded this Cut & Paste:

The primary differences between the two thermocouples: K & J Types ( most common)

Measuring Range…
Type K = -330°F to +2460°F (-200°C to +1250°C)
Type J = -40°F to +1382°F (-40°C to +750°C)

Sensitivity…
Type K = approximately 41 µV/°C
Type J = approximately 55 µV/°C

[Author]

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