OK, I am located in Cleveland, Ohio USA so I will limit shipping to the US just to keep it simple.
What I have here are several Temperature Transmitters and am attaching a few images. More information on them can be found here. They are TT221 series so if you click the link and scroll down to 221 series you can click the manual link on the left for much more information. These are for type J thermocouple input and the full part number is TT221J1HM which is a 35 to 700 Degree F or 1.7 to 371.1 Deg C temperature.
What that means is with a power supply (12 Volt min.) they output 4 - 20 mA for the given range. Max supply is 45 VDC and I generally use them in the 24 VDC power supply range. Place a resistor in series @ 250Ω 1% and you can have a 1 to 5 volt output to input to a uC, place a 500Ω resistor in there and you have 2 - 10 volt for a output. Attached is a circuit example.
So what is my price? Free for a few with a simple stipulation or two. Please don't ask me for a few just to have. I would like to see a few forum members use them and post their projects and how they used them. I sent a few to a forum member several months ago and they were used to control a alloy bath temperature to make shotgun shell shot. They even mailed me photographs of the setup which was cool.
The newer versions are fully programmable and thus at work we are replacing this type. I never throw anything away!
I have 8 and will send the first 4 people who post in the thread they want a few (two) each. Postage is on me but remember I do ask they get used. They do not include type J thermocouples or power supply. Just the temperature transmitters. Therefore if you are unfamiliar with temperature transmitters like this please allow another member a chance to get a few.
<Edit> They are a Type J TC Input I think my circuit shows Type K! </Edit>
Ron
What I have here are several Temperature Transmitters and am attaching a few images. More information on them can be found here. They are TT221 series so if you click the link and scroll down to 221 series you can click the manual link on the left for much more information. These are for type J thermocouple input and the full part number is TT221J1HM which is a 35 to 700 Degree F or 1.7 to 371.1 Deg C temperature.
What that means is with a power supply (12 Volt min.) they output 4 - 20 mA for the given range. Max supply is 45 VDC and I generally use them in the 24 VDC power supply range. Place a resistor in series @ 250Ω 1% and you can have a 1 to 5 volt output to input to a uC, place a 500Ω resistor in there and you have 2 - 10 volt for a output. Attached is a circuit example.
So what is my price? Free for a few with a simple stipulation or two. Please don't ask me for a few just to have. I would like to see a few forum members use them and post their projects and how they used them. I sent a few to a forum member several months ago and they were used to control a alloy bath temperature to make shotgun shell shot. They even mailed me photographs of the setup which was cool.
The newer versions are fully programmable and thus at work we are replacing this type. I never throw anything away!
I have 8 and will send the first 4 people who post in the thread they want a few (two) each. Postage is on me but remember I do ask they get used. They do not include type J thermocouples or power supply. Just the temperature transmitters. Therefore if you are unfamiliar with temperature transmitters like this please allow another member a chance to get a few.
<Edit> They are a Type J TC Input I think my circuit shows Type K! </Edit>
Ron
Attachments
Last edited: