Reference Manual

00809-0400-4728, Rev AA June 2011

Rosemount 644

Ambient Temperature Effect

Table A-2. Ambient Temperature Effect

 

 

 

Temperature Effects per 1.0 °C

 

 

 

 

 

Input Range

(1.8 °F) Change in Ambient

 

 

 

Sensor Options

Sensor Reference

(°C)

Temperature(1)

Range

D/A Effect(2)

2-, 3-, 4-wire RTDs

 

 

 

 

 

 

 

Pt 100 (α = 0.00385)

IEC 751

-200 to 850

0.003

°C (0.0054 °F)

Entire Sensor Input Range

0.001%

of span

Pt 200 (α = 0.00385)

IEC 751

-200 to 850

0.004

°C (0.0072 °F)

Entire Sensor Input Range

0.001% of span

Pt 500 (α = 0.00385)

IEC 751

-200 to 850

0.003

°C (0.0054 °F)

Entire Sensor Input Range

0.001% of span

Pt 1000 (α = 0.00385)

IEC 751

-200 to 300

0.003

°C (0.0054 °F)

Entire Sensor Input Range

0.001% of span

Pt 100 (α = 0.003916)

JIS 1604

-200 to 645

0.003

°C (0.0054 °F)

Entire Sensor Input Range

0.001% of span

Pt 200 (α = 0.003916)

JIS 1604

-200 to 645

0.004

°C (0.0072 °F)

Entire Sensor Input Range

0.001% of span

Ni 120

Edison Curve No. 7

-70 to 300

0.003

°C (0.0054 °F)

Entire Sensor Input Range

0.001% of span

Cu 10

Edison Copper

-50 to 250

0.03 °C (0.054 °F)

Entire Sensor Input Range

0.001% of span

 

Winding No. 15

 

 

 

 

 

 

Pt 50 (α = 0.00391)

GOST 6651-94

-200 to 550

0.004

°C (0.0072 °F)

Entire Sensor Input Range

0.001% of span

Pt 100 (α = 0.00391)

GOST 6651-94

-200 to 550

0.003

°C (0.0054 °F)

Entire Sensor Input Range

0.001% of span

Cu 50 (α = 0.00426)

GOST 6651-94

-50 to 200

0.008

°C (0.0144 °F)

Entire Sensor Input Range

0.001% of span

Cu 50 (α = 0.00428)

GOST 6651-94

-185 to 200

0.008

°C (0.0144 °F)

Entire Sensor Input Range

0.001% of span

Cu 100 (α = 0.00426)

GOST 6651-94

-50 to 200

0.004

°C (0.0072 °F)

Entire Sensor Input Range

0.001% of span

Cu 100 (α = 0.00428)

GOST 6651-94

-185 to 200

0.004

°C (0.0072 °F)

Entire Sensor Input Range

0.001% of span

Thermocouples

 

 

 

 

 

 

 

 

 

 

0.014

°C

T 1000 °C

0.001%

of span

Type B

NIST Monograph 175,

100 to 1820

0.032

°C – (0.0025% of (T –

300 °C T < 1000 °C

0.001% of span

IEC 584

300))

 

 

 

 

 

 

 

 

 

 

 

 

 

0.054

°C – (0.011% of (T – 100))

100 °C T < 300 °C

0.001% of span

Type E

NIST Monograph 175,

-50 to 1000

0.005

°C + (0.0043% of T)

All

0.001% of span

IEC 584

 

 

 

 

 

 

 

 

 

 

 

 

 

NIST Monograph 175,

 

0.0054 °C + (0.00029%of T)

T0 °C

0.001% of span

Type J

-180 to 760

0.0054 °C + (0.0025% of

T < 0 °C

0.001% of span

IEC 584

 

 

absolute value T)

 

 

 

 

 

 

 

 

 

 

NIST Monograph 175,

 

0.0061 °C + (0.0054% of T)

T 0 °C

0.001% of span

Type K

-180 to 1372

0.0061 °C + (0.0025% of

T < 0 °C

0.001% of span

IEC 584

 

 

absolute value T)

 

 

 

 

 

 

 

 

 

Type N

NIST Monograph 175,

-200 to 1300

0.0068 °C + (0.00036% of T)

All

0.001% of span

IEC 584

 

 

 

 

 

 

 

 

 

 

 

 

Type R

NIST Monograph 175,

0 to 1768

0.016

°C

T 200 °C

0.001% of span

IEC 584

0.023

°C – (0.0036% of T)

T < 200 °C

0.001% of span

 

 

Type S

NIST Monograph 175,

0 to 1768

0.016

°C

T 200 °C

0.001% of span

IEC 584

0.023

°C – (0.0036% of T)

T < 200 °C

0.001% of span

 

 

 

NIST Monograph 175,

 

0.0064 °C

T0 °C

0.001% of span

Type T

-200 to 400

0.0064 °C +(0.0043% of

T < 0 °C

0.001% of span

IEC 584

 

 

absolute value T)

 

 

 

 

 

 

 

 

 

 

 

 

0.0054 °C + (0.00029% of T)

T0 °C

0.001% of span

DIN Type L

DIN 43710

-200 to 900

0.0054 °C + (0.0025% of

T < 0 °C

0.001% of span

 

 

 

absolute value T)

 

 

 

 

 

 

0.0064 °C

T0 °C

0.001% of span

DIN Type U

DIN 43710

-200 to 900

0.0064 °C + (0.0043% of

T < 0 °C

0.001% of span

 

 

 

absolute value T)

 

 

 

Type W5Re/W26Re

ASTM E 988-96

0 to 2000

0.016

°C

T 200 °C

0.001% of span

0.023

°C – (0.0036% of T)

T < 200 °C

0.001% of span

 

 

 

 

 

 

0.007

°C

T 0 °C

0.001% of span

GOST Type L

GOST R 8.585-2001

-200 to 800

0.007

°C – (0.003% of absolute

T < 0 °C

0.001% of span

 

 

 

value T)

 

 

 

A-7

Page 53
Image 53
Emerson 644 manual Table A-2. Ambient Temperature Effect, Thermocouples