Temp Dip Stick Question

I started my newly rebuilt engine today that has a temp dip stick - I would guess it's a Berg unit, but not sure - I noticed the oil temp got up to 225 or 230 after warmup and a short drive. The thing is the oil did not feel that hot when I checked the level a couple of minutes after shutting it down. I noticed the the dipstick has a alum or steel collar at the bottom of the stick ( not attached but loose ) that has a set screw in it. I am now guessing that it should be tight to the bottom of the dipstick allowing it to go in only so far. I think I am getting a false reading because the tip of the stick is resting on the bottom of the pan and I am geting that reading and not the oil temp. Do I set the collar w/ the set screw tight to the stick holding it 1/8" or 1/4" from the bottom? That will of course affect the oil level showing on the stick. This dipstick came w/ the car and has no instructions.
Thanks for any help in advance, Dale

Quoting the Berg instructions: "You simply remove your dipstick and install the temperature sensor in its place. Install the ends on the wire furnished and hook it up with the 2 to 1 push-on connector piggy back to your oil pressure light switch and the female end to the grounding bolt on the new temperature dipstick. When installing the wire to the grounding post on the new temperature dip stick you must aim the wire at 9 o'clock so that the insulated wire stops the grounding arm from turning counterclockwise and contacting the backside of the grounding post when the temperatures are below freezing. Now, when the temperature reaches approximately 225 to 227 degrees, the center post rotates around until it starts to touch the grounding bolt and it starts to glow or flicker your oil light (hotter temperatures will eventually turn the light on steady)....Never pull on the sensor contact center rod, as this will unhook it inside the sensor spring and ruin it, requiring you to pay to have it fixed or replaced."

Ricardo knows his fical matter on this one. Take your time and watch the travel of the bent wire as it rotates around the shaft heading for contact with the phillips head screw that connects to the sending unit. If you know the motor is cold, realize the position of the wire, then watch it as the warm up process goes on.
Get to know your animal my friend! The GB 227 is one of the best things that Gene Berg has done for humanity (IMHO).

I hope you hook yours up to the new powerplant, Ernie....

Thanks for all the help guys, but after looking at the Berg dipstick site and pictures I don't think that is the one I have. Mine just seems to have two leads - going to the oil temp guage and I see no shorting system on this one to turn on the light ( have no light on this one only has gauge ). I did tighten up the set screw and raise the dip stick off the bottom of the pan about 1/8 to 1/4 inch to see if that changes the oil temps I am getting.
As an after thought I purchased a point and shoot laser heat senser from HFT and would like to ask what is the normal head Temp's I should be seeing after fully warm? Don't want to ruin my engine during this stage.
Thanks again for the help, Dale

Dale; may I suggest you get the Berg unit; at $19.50 a pop plus shipping it's a definite deal. Depending on different conditions the temperature at the outside of the heads will be from 225 degrees to 325 degrees while operating.

Thanks Ricardo
I will check the head temps and see what I have. If nothing changes on the dipstick I have I will just order a new Berg unit as you suggest.
Thanks again