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temperature sensors. — Parallax Forums

temperature sensors.

ArchiverArchiver Posts: 46,084
edited 2000-05-24 18:12 in General Discussion
Hello,

I have a friend who would like me to develop a computer (using a BS2)
which will measure input, output and delta air temperatures on his
intercooler. (an intercooler is a device which is used on a turbo car
to cool the air after the turbo and before the intake)

The temperature sensor must be "industrial" in nature, and will be
mounted directly through the intercooler piping. Normally one would
drill a hole in the pipe, and weld in a bolt providing a mounting
point for the sensor.

My question is, does anyone know where I can find such sensors? They
need to be about 40 - 200 degrees Farenheight and easily interfaced
with the stamp.. :-)

If anyone can point me in the right direction where I would be able
to find such a sensor?

Thanks,

-James

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2000-05-23 04:11
    James:
    Intercooler inlet temps can go WAY beyond 200F...(I know, I race a turbo
    Grand National) You will need to use a K-type thermocouple probe. I did this
    same test. You don't need to weld a "bung" onto the pipe, either...just
    drill a tiny hole, insert the wire probe, and seal with JB Weld. Now...as
    for interfacing the K type probe to the Stamp.....that's another story. I am
    working on that...just don't have the time!!!! Till then I'd be glad to set
    up your friend with a digital memory temp meter with probe for $99.
    Good Luck-
    -Steve Chlupsa

    Original Message
    From: <jr@h...>
    To: <basicstamps@egroups.com>
    Sent: Monday, May 22, 2000 9:11 PM
    Subject: [noparse][[/noparse]basicstamps] temperature sensors.


    > Hello,
    >
    > I have a friend who would like me to develop a computer (using a BS2)
    > which will measure input, output and delta air temperatures on his
    > intercooler. (an intercooler is a device which is used on a turbo car
    > to cool the air after the turbo and before the intake)
    >
    > The temperature sensor must be "industrial" in nature, and will be
    > mounted directly through the intercooler piping. Normally one would
    > drill a hole in the pipe, and weld in a bolt providing a mounting
    > point for the sensor.
    >
    > My question is, does anyone know where I can find such sensors? They
    > need to be about 40 - 200 degrees Farenheight and easily interfaced
    > with the stamp.. :-)
    >
    > If anyone can point me in the right direction where I would be able
    > to find such a sensor?
    >
    > Thanks,
    >
    > -James
    >
    >
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2000-05-23 11:12
    Intake air temp sensor for 1995 chev S-10 2.2L. 41 F = 7280 ohms -- 200 F = 200
    ohms. Use rctime and a .1ufd cap. Bill

    Original Message
    From: jr@h... [noparse]/noparse]SMTP:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=kyqRi6g2Gi6yVVIxVE3lDhcibJ0yAzix61HeZeR8A9gFsh-Ch5EE9bDk3NzDGVAm6L_jDWeX9A]jr@h...[/url
    Sent: Monday, May 22, 2000 10:11 PM
    To: basicstamps@egroups.com
    Subject: [noparse][[/noparse]basicstamps] temperature sensors.

    Hello,

    I have a friend who would like me to develop a computer (using a BS2)
    which will measure input, output and delta air temperatures on his
    intercooler. (an intercooler is a device which is used on a turbo car
    to cool the air after the turbo and before the intake)

    The temperature sensor must be "industrial" in nature, and will be
    mounted directly through the intercooler piping. Normally one would
    drill a hole in the pipe, and weld in a bolt providing a mounting
    point for the sensor.

    My question is, does anyone know where I can find such sensors? They
    need to be about 40 - 200 degrees Farenheight and easily interfaced
    with the stamp.. :-)

    If anyone can point me in the right direction where I would be able
    to find such a sensor?

    Thanks,

    -James
  • ArchiverArchiver Posts: 46,084
    edited 2000-05-23 13:43
    --- In basicstamps@egroups.com, "Steve Chlupsa" <schlupsa@k...> wrote:
    > James:
    > Intercooler inlet temps can go WAY beyond 200F...(I know, I race a
    turbo
    > Grand National) You will need to use a K-type thermocouple probe. I
    did this
    > same test. You don't need to weld a "bung" onto the pipe,
    either...just
    > drill a tiny hole, insert the wire probe, and seal with JB Weld.
    Now...as
    > for interfacing the K type probe to the Stamp.....that's another
    story. I am
    > working on that...just don't have the time!!!! Till then I'd be glad
    to set
    > up your friend with a digital memory temp meter with probe for $99.
    > Good Luck-
    > -Steve Chlupsa


    Steve, Where can one find one of these K type thermocouple probes?


    Thanks,

    -jr


    >
    >
    Original Message
    > From: <jr@h...>
    > To: <basicstamps@egroups.com>
    > Sent: Monday, May 22, 2000 9:11 PM
    > Subject: [noparse][[/noparse]basicstamps] temperature sensors.
    >
    >
    > > Hello,
    > >
    > > I have a friend who would like me to develop a computer (using a
    BS2)
    > > which will measure input, output and delta air temperatures on his
    > > intercooler. (an intercooler is a device which is used on a turbo
    car
    > > to cool the air after the turbo and before the intake)
    > >
    > > The temperature sensor must be "industrial" in nature, and will be
    > > mounted directly through the intercooler piping. Normally one
    would
    > > drill a hole in the pipe, and weld in a bolt providing a mounting
    > > point for the sensor.
    > >
    > > My question is, does anyone know where I can find such sensors?
    They
    > > need to be about 40 - 200 degrees Farenheight and easily
    interfaced
    > > with the stamp.. :-)
    > >
    > > If anyone can point me in the right direction where I would be
    able
    > > to find such a sensor?
    > >
    > > Thanks,
    > >
    > > -James
    > >
    > >
    > >
    > >
    > >
    > >
  • ArchiverArchiver Posts: 46,084
    edited 2000-05-23 14:14
    >
    > Steve, Where can one find one of these K type thermocouple probes?
    >
    > Thanks,
    >
    > -jr

    Industrial supply houses (like mcmaster.com) and lab suppliers (like
    omega.com), but expect to pay industrial prices!
    Go with the Chevy part, mucho cheaper at junkyard.
    pm
  • ArchiverArchiver Posts: 46,084
    edited 2000-05-23 14:35
    actually you should use a type J thermocouple, its good for up to 600 deg F,
    but if you thonk your inlet temp is over 600 deg then a type K and its good
    for up to 1700 deg F.
    these are their useful ranges, they will go higher.

    as to interfacing them to a system, analog devices makes the most wonderful
    chip ive seen in a long time.

    AD594 or AD595
    the 594 is for type J
    the 595 is for type K
    both give 10 mv / deg F output up to within 2 volts of their vcc, so to get
    0 to 5 volt output they need a 7 volt supply.
    both also have cold junction compensation on the chips.
    then feed this into an LTC1298 a to d converter.
    you now have a digital signal to read into your processor of choice.

    so with the type J thermocouple and the AD594 and the LTC1298 AND a 5 volt
    vcc for the AD594 you would get 0 to 600 deg / F in 0.146484375 per deg
    steps

    my math could be wrong, but all the rest works real good.
    been there.

    Norm & Monda
    Cozy MK IV #202
    Ford V-6 Powered
    Original Message
    From: "James Russo" <jr@h...>
    To: <basicstamps@egroups.com>
    Sent: Tuesday, May 23, 2000 8:43 AM
    Subject: [noparse][[/noparse]basicstamps] Re: temperature sensors.


    > --- In basicstamps@egroups.com, "Steve Chlupsa" <schlupsa@k...> wrote:
    > > James:
    > > Intercooler inlet temps can go WAY beyond 200F...(I know, I race a
    > turbo
    > > Grand National) You will need to use a K-type thermocouple probe. I
    > did this
    > > same test. You don't need to weld a "bung" onto the pipe,
    > either...just
    > > drill a tiny hole, insert the wire probe, and seal with JB Weld.
    > Now...as
    > > for interfacing the K type probe to the Stamp.....that's another
    > story. I am
    > > working on that...just don't have the time!!!! Till then I'd be glad
    > to set
    > > up your friend with a digital memory temp meter with probe for $99.
    > > Good Luck-
    > > -Steve Chlupsa
    >
    >
    > Steve, Where can one find one of these K type thermocouple probes?
    >
    >
    > Thanks,
    >
    > -jr
    >
    >
    > >
    > >
    Original Message
    > > From: <jr@h...>
    > > To: <basicstamps@egroups.com>
    > > Sent: Monday, May 22, 2000 9:11 PM
    > > Subject: [noparse][[/noparse]basicstamps] temperature sensors.
    > >
    > >
    > > > Hello,
    > > >
    > > > I have a friend who would like me to develop a computer (using a
    > BS2)
    > > > which will measure input, output and delta air temperatures on his
    > > > intercooler. (an intercooler is a device which is used on a turbo
    > car
    > > > to cool the air after the turbo and before the intake)
    > > >
    > > > The temperature sensor must be "industrial" in nature, and will be
    > > > mounted directly through the intercooler piping. Normally one
    > would
    > > > drill a hole in the pipe, and weld in a bolt providing a mounting
    > > > point for the sensor.
    > > >
    > > > My question is, does anyone know where I can find such sensors?
    > They
    > > > need to be about 40 - 200 degrees Farenheight and easily
    > interfaced
    > > > with the stamp.. :-)
    > > >
    > > > If anyone can point me in the right direction where I would be
    > able
    > > > to find such a sensor?
    > > >
    > > > Thanks,
    > > >
    > > > -James
    > > >
    > > >
    > > >
    > > >
    > > >
    > > >
    >
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2000-05-23 15:44
    Analog Device's AD594/5 amplifier output is 10mV/°C which can be
    converted to a Stamp friendly signal using an ADC or voltage-to-
    frequency converter such as the AD654. Be sure to read the complete
    data sheets and application notes for best results.
    --
    Greg


    --- In basicstamps@egroups.com, "norm doty" <norm.doty@w...> wrote:
    > actually you should use a type J thermocouple, its good for up to
    600 deg F,
    > but if you thonk your inlet temp is over 600 deg then a type K and
    its good
    > for up to 1700 deg F.
    > these are their useful ranges, they will go higher.
    >
    > as to interfacing them to a system, analog devices makes the most
    wonderful
    > chip ive seen in a long time.
    >
    > AD594 or AD595
    > the 594 is for type J
    > the 595 is for type K
    > both give 10 mv / deg F output up to within 2 volts of their vcc,
    so to get
    > 0 to 5 volt output they need a 7 volt supply.
    > both also have cold junction compensation on the chips.
    > then feed this into an LTC1298 a to d converter.
    > you now have a digital signal to read into your processor of choice.
    >
    > so with the type J thermocouple and the AD594 and the LTC1298 AND a
    5 volt
    > vcc for the AD594 you would get 0 to 600 deg / F in 0.146484375 per
    deg
    > steps
    >
    > my math could be wrong, but all the rest works real good.
    > been there.
    >
    > Norm & Monda
    > Cozy MK IV #202
    > Ford V-6 Powered
    >
    Original Message
    > From: "James Russo" <jr@h...>
    > To: <basicstamps@egroups.com>
    > Sent: Tuesday, May 23, 2000 8:43 AM
    > Subject: [noparse][[/noparse]basicstamps] Re: temperature sensors.
    >
    >
    > > --- In basicstamps@egroups.com, "Steve Chlupsa" <schlupsa@k...>
    wrote:
    > > > James:
    > > > Intercooler inlet temps can go WAY beyond 200F...(I know, I
    race a
    > > turbo
    > > > Grand National) You will need to use a K-type thermocouple
    probe. I
    > > did this
    > > > same test. You don't need to weld a "bung" onto the pipe,
    > > either...just
    > > > drill a tiny hole, insert the wire probe, and seal with JB Weld.
    > > Now...as
    > > > for interfacing the K type probe to the Stamp.....that's another
    > > story. I am
    > > > working on that...just don't have the time!!!! Till then I'd be
    glad
    > > to set
    > > > up your friend with a digital memory temp meter with probe for
    $99.
    > > > Good Luck-
    > > > -Steve Chlupsa
    > >
    > >
    > > Steve, Where can one find one of these K type thermocouple probes?
    > >
    > >
    > > Thanks,
    > >
    > > -jr
    > >
    > >
    > > >
    > > >
    Original Message
    > > > From: <jr@h...>
    > > > To: <basicstamps@egroups.com>
    > > > Sent: Monday, May 22, 2000 9:11 PM
    > > > Subject: [noparse][[/noparse]basicstamps] temperature sensors.
    > > >
    > > >
    > > > > Hello,
    > > > >
    > > > > I have a friend who would like me to develop a computer
    (using a
    > > BS2)
    > > > > which will measure input, output and delta air temperatures
    on his
    > > > > intercooler. (an intercooler is a device which is used on a
    turbo
    > > car
    > > > > to cool the air after the turbo and before the intake)
    > > > >
    > > > > The temperature sensor must be "industrial" in nature, and
    will be
    > > > > mounted directly through the intercooler piping. Normally one
    > > would
    > > > > drill a hole in the pipe, and weld in a bolt providing a
    mounting
    > > > > point for the sensor.
    > > > >
    > > > > My question is, does anyone know where I can find such
    sensors?
    > > They
    > > > > need to be about 40 - 200 degrees Farenheight and easily
    > > interfaced
    > > > > with the stamp.. :-)
    > > > >
    > > > > If anyone can point me in the right direction where I would be
    > > able
    > > > > to find such a sensor?
    > > > >
    > > > > Thanks,
    > > > >
    > > > > -James
    > > > >
    > > > >
    > > > >
    > > > >
    > > > >
    > > > >
    > >
    > >
    > >
    > >
    > >
  • ArchiverArchiver Posts: 46,084
    edited 2000-05-24 01:01
    >Analog Device's AD594/5 amplifier output is 10mV/°C

    Note that the AD594/5 is pinned out so you can add an external gain
    resistor, if you want more (or different) gain than the 10mV/C.

    The data sheet explains this clearly.

    Steve

    Steve Roberts: sroberts@s...
  • ArchiverArchiver Posts: 46,084
    edited 2000-05-24 18:12
    Thanks to all who replied to this thread. Once again, the list comes
    through for me.. like there was ever a doubt...

    -jr


    --- In basicstamps@egroups.com, Stephen Roberts <sroberts@s...> wrote:
    > >Analog Device's AD594/5 amplifier output is 10mV/°C
    >
    > Note that the AD594/5 is pinned out so you can add an external gain
    > resistor, if you want more (or different) gain than the 10mV/C.
    >
    > The data sheet explains this clearly.
    >
    > Steve
    >
    >
    > Steve Roberts: sroberts@s...
    >
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