Re: [Vo]:Niobium - Iridium thermocouples

[a.ashfield]

Bob
I think Type S would be good for your range.  Type S works well for 
months.  I never understood why MFMP used type K.   I offered them an 
oz. of Pl/Rh alloy some while ago, that they could trade for type S 
thermocouples, but they never took me up on it.

AA

On 3/27/2017 5:22 PM, Bob Higgins wrote:
Presently I am using k-type thermocouples outside of their comfortable 
range to 1200C.  Bob Cook was suggesting the Nb-Ir thermocouples in 
place of k-type.  MFMP has used before a b-type thermocouple, but it 
was quite expensive.  I would love to find an inexpensive (but 
controlled) s-type or b-type thermocouple because they would be easy 
to integrate into my system.  If the Nb-Ir thermocouple were readily 
available at low cost and had a reasonable S/N I would welcome that 
too. When you buy from Omega, they have controls to insure the alloys 
are in spec. so as to control the voltage vs. temp to a standard.  I 
would like the same assurance for alternative thermocouple types too.  
I also need lead wires to the junction of about 40".


On Mon, Mar 27, 2017 at 1:09 PM, a.ashfield > wrote:


Bob,
What do you want the thermocouples for?  ie what temperature?
I have never used Niobium - Iridium thermocouples in the glass
industry.  We always used type S, and type B for more stable
results over years duration, for things like furnace crowns at
1550C, but this had the disadvantage of smaller output.  The
platinum migrates to the Rh leg over time, but we found a minimum
wire diameter was also necessary for long life due to
crystallization of Pl.
AA

On 3/27/2017 2:30 PM, Bob Higgins wrote:

Regarding the Nb-Ir thermocouples ... Bob, can you suggest a
source for these thermocouples and their voltage calibration
data? For my experiments, the cost of the hardware is coming out
of my own pocket - not someone else's deep pocket.  For k-type
thermocouples, the voltage-temperature profile is built into my
DAQ. For the Nb-Ir, I suspect, I will have to read the voltage
and convert it to temperature with a custom LUT in Labview.  All
doable if the voltage is not too low to be noisy and if the
couples are not too expensive.

On Mon, Mar 27, 2017 at 11:43 AM, > wrote:

Jones—

You note regarding the Lugano test and Higgins assessment the
following:

“The systemic optical false assumptions have rendered any
further conclusion unscientific. Levi was reportedly paid an
enormous amount of money by Elforsk and yet made stupid
errors, notably failing to use high temp thermocouples for
verification - plus he also failed to calibrate near the
running temperature - unforgivable, since his errors have
poisoned the positive aspects.”

I recently made the same comment about using good high
temperature T/C’s to Higgins with respect to his own Ni-H
automated test at MFMP.  I suggested he use a Nb-Ir couple
for high temperature measurements of the outside of his glow
stick-like experiment.  The couple is good for more than 2000
C I believe.

With a high temperature LENR heat source the Niobium/Iridium
combo is a reasonable thermo-electric source of power as
well, and it could well replace Pu-238 as a reliable,
long-term power supply for remote locations or space
applications without the hazard associated with Pu-238.

Bob Cook

Re: [Vo]:Niobium - Iridium thermocouples

[Bob Higgins]

Presently I am using k-type thermocouples outside of their comfortable
range to 1200C.  Bob Cook was suggesting the Nb-Ir thermocouples in place
of k-type.  MFMP has used before a b-type thermocouple, but it was quite
expensive.  I would love to find an inexpensive (but controlled) s-type or
b-type thermocouple because they would be easy to integrate into my
system.  If the Nb-Ir thermocouple were readily available at low cost and
had a reasonable S/N I would welcome that too.  When you buy from Omega,
they have controls to insure the alloys are in spec. so as to control the
voltage vs. temp to a standard.  I would like the same assurance for
alternative thermocouple types too.  I also need lead wires to the junction
of about 40".

On Mon, Mar 27, 2017 at 1:09 PM, a.ashfield  wrote:

> Bob,
> What do you want the thermocouples for?  ie what temperature?
> I have never used Niobium - Iridium thermocouples in the glass industry.
> We always used type S, and type B for more stable results over years
> duration, for things like furnace crowns at 1550C, but this had the
> disadvantage of smaller output.  The platinum migrates to the Rh leg over
> time, but we found a minimum wire diameter was also necessary for long life
> due to crystallization of Pl.
> AA
>
> On 3/27/2017 2:30 PM, Bob Higgins wrote:
>
> Regarding the Nb-Ir thermocouples ... Bob, can you suggest a source for
> these thermocouples and their voltage calibration data?  For my
> experiments, the cost of the hardware is coming out of my own pocket - not
> someone else's deep pocket.  For k-type thermocouples, the
> voltage-temperature profile is built into my DAQ.  For the Nb-Ir, I
> suspect, I will have to read the voltage and convert it to temperature with
> a custom LUT in Labview.  All doable if the voltage is not too low to be
> noisy and if the couples are not too expensive.
>
> On Mon, Mar 27, 2017 at 11:43 AM,  wrote:
>
>> Jones—
>>
>>
>>
>> You note regarding the Lugano test and Higgins assessment the following:
>>
>>
>>
>> “The systemic optical false assumptions have rendered any further
>> conclusion unscientific. Levi was reportedly paid an enormous amount of
>> money by Elforsk and yet made stupid errors, notably failing to use high
>> temp thermocouples for verification - plus he also failed to calibrate near
>> the running temperature - unforgivable, since his errors have poisoned the
>> positive aspects.”
>>
>>
>>
>> I recently made the same comment about using good high temperature T/C’s
>> to Higgins with respect to his own Ni-H automated test at MFMP.  I
>> suggested he use a Nb-Ir couple for high temperature measurements of the
>> outside of his glow stick-like experiment.  The couple is good for more
>> than 2000 C I believe.
>>
>>
>>
>> With a high temperature LENR heat source the Niobium/Iridium combo is a
>> reasonable thermo-electric source of power as well, and it could well
>> replace Pu-238 as a reliable, long-term power supply for remote locations
>> or space applications without the hazard associated with Pu-238.
>>
>>
>>
>> Bob Cook
>>
>
>

Re: [Vo]:Niobium - Iridium thermocouples

[a.ashfield]

Bob,
What do you want the thermocouples for?  ie what temperature?
I have never used Niobium - Iridium thermocouples in the glass 
industry.  We always used type S, and type B for more stable results 
over years duration, for things like furnace crowns at 1550C, but this 
had the disadvantage of smaller output.  The platinum migrates to the Rh 
leg over time, but we found a minimum wire diameter was also necessary 
for long life due to crystallization of Pl.

AA

On 3/27/2017 2:30 PM, Bob Higgins wrote:
Regarding the Nb-Ir thermocouples ... Bob, can you suggest a source 
for these thermocouples and their voltage calibration data?  For my 
experiments, the cost of the hardware is coming out of my own pocket - 
not someone else's deep pocket.  For k-type thermocouples, the 
voltage-temperature profile is built into my DAQ.  For the Nb-Ir, I 
suspect, I will have to read the voltage and convert it to temperature 
with a custom LUT in Labview.  All doable if the voltage is not too 
low to be noisy and if the couples are not too expensive.


On Mon, Mar 27, 2017 at 11:43 AM, > wrote:


Jones—

You note regarding the Lugano test and Higgins assessment the
following:

“The systemic optical false assumptions have rendered any further
conclusion unscientific. Levi was reportedly paid an enormous
amount of money by Elforsk and yet made stupid errors, notably
failing to use high temp thermocouples for verification - plus he
also failed to calibrate near the running temperature -
unforgivable, since his errors have poisoned the positive aspects.”

I recently made the same comment about using good high temperature
T/C’s to Higgins with respect to his own Ni-H automated test at
MFMP.  I suggested he use a Nb-Ir couple for high temperature
measurements of the outside of his glow stick-like experiment. 
The couple is good for more than 2000 C I believe.


With a high temperature LENR heat source the Niobium/Iridium combo
is a reasonable thermo-electric source of power as well, and it
could well replace Pu-238 as a reliable, long-term power supply
for remote locations or space applications without the hazard
associated with Pu-238.

Bob Cook

[Vo]:Niobium - Iridium thermocouples

[Bob Higgins]

Regarding the Nb-Ir thermocouples ... Bob, can you suggest a source for
these thermocouples and their voltage calibration data?  For my
experiments, the cost of the hardware is coming out of my own pocket - not
someone else's deep pocket.  For k-type thermocouples, the
voltage-temperature profile is built into my DAQ.  For the Nb-Ir, I
suspect, I will have to read the voltage and convert it to temperature with
a custom LUT in Labview.  All doable if the voltage is not too low to be
noisy and if the couples are not too expensive.

On Mon, Mar 27, 2017 at 11:43 AM,  wrote:

> Jones—
>
>
>
> You note regarding the Lugano test and Higgins assessment the following:
>
>
>
> “The systemic optical false assumptions have rendered any further
> conclusion unscientific. Levi was reportedly paid an enormous amount of
> money by Elforsk and yet made stupid errors, notably failing to use high
> temp thermocouples for verification - plus he also failed to calibrate near
> the running temperature - unforgivable, since his errors have poisoned the
> positive aspects.”
>
>
>
> I recently made the same comment about using good high temperature T/C’s
> to Higgins with respect to his own Ni-H automated test at MFMP.  I
> suggested he use a Nb-Ir couple for high temperature measurements of the
> outside of his glow stick-like experiment.  The couple is good for more
> than 2000 C I believe.
>
>
>
> With a high temperature LENR heat source the Niobium/Iridium combo is a
> reasonable thermo-electric source of power as well, and it could well
> replace Pu-238 as a reliable, long-term power supply for remote locations
> or space applications without the hazard associated with Pu-238.
>
>
>
> Bob Cook
>