Murata's 10K\Omega; NTC thermistor Temperature-Resistance conversion rev.1.0 for HP 42s

for HP 42S
NTC-10K - Murata's NTC thermistor Resistance V.S. Termperature functions

Usage

Resistance → Temperature conversion : [SOLVER] [XV10K|XH10K] Resistance [R] [Temp]
Temperature → Resistance conversion : [SOLVER] [XV10K|XH10K] Temperature [Temp] [R]

Variables

MEM "R"    : resistance [&Omega];
MEM "T_c" : temperature [°C]

Approximate equation:

$R_T = R_{25} \exp\big\{ B \big( \displaystyle\frac{1}{ 298.15 + (T - T_{25}) + C (T - T_{25})^2 + D (T - T_{25})^3} - \frac{1}{273.15 + T_{25}}\big)\big\}$

R_T : Resistance [Ω] at temperature T [°C]
R₂₅ : Resistance [Ω] at 25 °C
T₂₅ : Temperature 25 °C
T : Temperature in °C



Part number
B
C
D



NTSA0XV103
 3878.1 
 2.797  ×10^-4
 2.80 ×10^-7



NCP21XV103
 3866.5 
 3.732  ×10^-4
-6.50 ×10^-7



NCP15XH103
 3327.4 
 5.963  ×10^-4
 6.59 ×10^-7

Approximation errors

fig.1 Approximation error V.S. Temperature, Resistance V.S. Temperature (NTSA0XV103)

fig.2 Approximation error V.S. Temperature, Resistance V.S. Temperature (NCP15XH103, NCP21XV103)

Program list (Rev.1.10 Mar. 3, 2010)

NTC thermistor approximate function for NTSA0XV103, NCP21XV103 and NCP15XH103

NTSA0XV103 NCP21XV103 NCP15XH103

01 LBL "A0XV"
02 MVAR "T_c" 
03 MVAR "R"
04 RCL "T_c"
05 25
06 -
07 ENTER
08 ENTER
09 ENTER
10 2.8E-7
11 ×
12 2.797E-4
13 +
14 × 
15 1 
16 +
17 ×
18 298.15
19 +
20 1/χ
21 298.15
22 1/χ
23 -
24 3878.1
25 ×
26 E↑χ
27 1E4
28 ×
29 RCL- "R"
30 .END.

01 LBL "P1XV"
02 MVAR "T_c" 
03 MVAR "R"
04 RCL "T_c"
05 25
06 -
07 ENTER
08 ENTER
09 ENTER
10 -6.50E-7
11 ×
12 3.7322E-4
13 +
14 × 
15 1 
16 +
17 ×
18 298.15
19 +
20 1/χ
21 298.15
22 1/χ
23 -
24 3866.5
25 ×
26 E↑χ
27 1E4
28 ×
29 RCL- "R"
30 .END.

01 LBL "P5XH"
02 MVAR "T_c" 
03 MVAR "R"
04 RCL "T_c"
05 25
06 -
07 ENTER
08 ENTER
09 ENTER
10 6.59E-7
11 ×
12 5.963E-4
13 +
14 × 
15 1 
16 +
17 ×
18 298.15
19 +
20 1/χ
21 298.15
22 1/χ
23 -
24 3327.4
25 ×
26 E↑χ
27 1E4
28 ×
29 RCL- "R"
30 .END.

Download 'A0XV' / 'P1XV' / 'P5XH' - raw program files for the Free42

APPENDIX

Program library for the HP 42S

ABC2XY - Triangulation, tree known distance to the coordinates conversion
AGM - Arithmetic-Geometric Mean
AVR - Adjustable voltage regulator (such as LM317 or TL431) solver program
BPFFL - Center frequency and Q of a Fliege band-pass-filter
BPFMF - Gain coefficent, center frequency and Q of a multiple-feedback band-pass-filter
E24 - Find nearest fraction(s) in the E24 numbers
eW - exponent of Lambert W function
Factr - Factor a positive integer
Frac - Fractional approximation
LCM/GCD - LCM and GCD of two positive integers
LCR - Resonant frequency of a LC resonator
LPFMF - Gain coefficent, center frequency and Q of a multiple-feedback low-pass-filter
L• - Inductanse of a straight conductor of circular section
L- - Inductanse of a straight conductor of thin flat section
NTC10K - NCP21XV103 NTC thermistor Temperature V.S. Resistance function to solve
OST - SOLVE alternative, numerical solution of a lenear equation using Ostrowski's method
RI - Rational interpolation
Pt100 - Pt100-1997 Temperature V.S. Resistance function to solve
μZw, μwZ - Synthesize/Analyze microstrip transmission line
cbcpw - Analyze Conductor-backed Coplanar Wave guide / Complete elliptic integral of the first kind K(k)
Vn - Input refered voltage noise of an operational amplifier
Z→S - Impedance Z to S₁₁ scattering parameter conversion
ZdSL - Differential impedance of an edge coupled stripline solver program

Part number	B	C	D
NTSA0XV103	3878.1	2.797 ×10^-4	2.80 ×10^-7
NCP21XV103	3866.5	3.732 ×10^-4	-6.50 ×10^-7
NCP15XH103	3327.4	5.963 ×10^-4	6.59 ×10^-7

SEE ALSO

APPENDIX