Description:

15" Stainless steel thermowell compatible with the Ranco ETC temperature controls, Johnson A419 controls and other controls with a 1/4" diameter temperature probe. Allows for the safe insertion of these probes in liquids without risking damage to the sensor and possible inaccurate readings.

This thermowell is ideal for use in brewing to control fermentation temperatures, aquariums, sous vide cooking and dozens of other applications where a more expensive machined and threaded stainless thermal well is not required.

The #7 stopper will fit 5, 6 or 6.5 gallon carboys or similarly sized opening. Can be used with or without the stopper.

My thoughts upon receiving it. The stopper part of this assembly is ghetto. The stopper is a solid stopper that has been poorly manually drilled out. The stopper is crumbly, I would NOT put this stopper in a carboy where the crumbling pieces could fall into the beer. I'm going to have to re-engineer a stopper that is suitable. The stainless steel thermowell seems like it should work well once I fix the stopper.

EDIT: I'm using the thermowells with a standard carboy cap and a modified carboy cap. I have 2 thermowells -- 2 refrigerator chambers. For the modified cap, I cut the long, smaller diameter protrusion flush with the top of the cap. The thermowell make an air tight seal in the smaller diameter opening. The thermowell is however angled instead of pointing straight down -- the larger opening is where I attach the air lock. The unmodified cap configuration has the thermowell inserted in the larger diameter opening, the sealing is a little loose but it still works well since the end of the thermowell is flared -- the other opening has the blow off tube attached. The thermowell point straight down in this configuration.

These thermowells work really well with the A419, I get 1 degree overshoot below the setpoint when the A419 is set to cooling/cut-out mode. The stopper that the thermowells came with are crap.