Temperature Guages

J.C.A._3

One thing I've learned over the years...KEEP A SPARE THERMISTER and LEGEND (OHMS to TEMP.) IN YOUR TRUCK!!!! (caps mine)

When you inherit a job from someone who cheaped out and didn't use any...It will read them right from your multi-meter, if you HAVE to know.

I always keep a few on hand, and the batteries fresh in the meter just in case.... Chris

Couderay

Temperature Guages

Have a couple of temperature guages lying aroud and wanted to install on a primary/secondary system. Where is the most useful place to install them,on the boiler loop,or the system loop. The piping is 1 1/4". The wells for the guages is 3/4" and have 1 1/4" copper crosses. The other question is,can a well installed into a tee be okay if the well is left above the main piping. In other words no penetration into the run of pipe.

Brad White_38

On a P/S system

I generally monitor all points, meaning at least four, the radiation S&R and the boiler S&R. They all work together. If you are tracking setback and have sufficient instrumentation on your boiler loop then sure, the radiation loop could use a little dressing up.

If you cannot penetrate the pipe from the side, the best deal going is heading into a tee with the sensor pointing in direction of flow just before the flow takes a turn. If the sensor is not inside the tube itself you will lose a degree or two of resolution. This can be a lot if your flow rate is low.

But if you HAVE to install it perpendicular to flow, the top is the place. Just accept the limitations.

BTW: I use Azel dual temperature sensors on mine. Sensors seem to be Tekmar types curved to the pipe. Key is to have the installations of any instrumentation identical as to heat conductive compound, type, application and insulation for common sequence readings.

hr

Depends on which info

is most important, I suppose.

On a P/S with a non condensing boiler I like to see a gauge at the return to the boiler. One at the supply allows you to watch delta t through the boiler, although the boiler itself should have a gauge.

Same with tany secondary loops. Install these at least 6" above the primary take off points to get away from conduction temperature transfer.

Like Brad, I feel the strap on thermistor type thermometers are quicker to respond, easier to install, and more accurate than well type bi-metal.

the Azels he mentions will do some high and low data logging, great for troubleshooting when you cannot be there The sensorscan be remote mounted up to 500 feet away, i believe.

Heck you could even mount the readout in you living room to monitor while watching TV.

hot rod

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Couderay

thank you for the info

Couderay

thank you for the info