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

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)		T ≥ 0 °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		T ≥ 0 °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)		T ≥ 0 °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		T ≥ 0 °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