Fisher 244EH, 244ER TABLE A-2. Model 244E Input Options and Accuracy, Sensor, Recommended

Accuracy

TABLE A-2. Model 244E Input Options and Accuracy.

Sensor	Sensor	Input		Recommended
Options	Reference	Ranges		Min. Span(1)		Accuracy (whichever is greater)
2-, 3-, 4-wire RTDs		°C	°F	°C	°F
Pt 100	IEC 751, 1995 (α = 0.00385)	–200 to 850	–328 to 1562	10	18	0.05% of span + 0.15 °C or 0.2 °C
Pt 100	JIS 1604, 1981 (α = 0.003916)	–200 to 645	–328 to 1093	10	18	0.05% of span + 0.15 °C or 0.2 °C
Pt 200	IEC 751, 1995 (α = 0.00385)	–200 to 850	–328 to 1562	10	18	0.01% of span or 0.4 °C
PT 500	IEC 751, 1995 (α = 0.00385)	–200 to 850	–328 to 1562	10	18	0.01% of span or 0.3 °C
Pt 1000	IEC 751, 1995 (α = 0.00385)	–200 to 300	–328 to 572	10	18	0.01% of span or 0.3 °C
Ni 120	Edison Curve No. 7	–70 to 300	–94 to 572	10	18	0.01% of span or 0.2 °C
Cu 10	Edison Copper Winding No. 1	–50 to 250	–58 to 482	10	18	0.5% of span or 1.5 °C
Thermocouples(2)
Type B(3)	NIST Monograph 175, IEC 584	100 to 1820	212 to 3308	25	40	0.2% of span or 1.0 °C
Type E	NIST Monograph 175, IEC 584	–50 to 1000	–58 to 1832	25	40	0.1% of span or 0.5 °C
Type jJ	NIST Monograph 175, IEC 584	–180 to 760	–292 to 1400	25	40	0.1% of span or 0.5 °C
Type K	NIST Monograph 175, IEC 584	–180 to 1372	–292 to 2502	25	40	0.1% of span or 1.0 °C
Type N	NIST Monograph 175, IEC 584	–200 to 1300	–328 to 2372	25	40	0.1% of span or 1.0 °C
Type R	NIST Monograph 175, IEC 584	0 to 1768	32 to 3214	25	40	0.1% of span or 1.0 °C
Type S	NIST Monograph 175, IEC 584	0 to 1768	32 to 3214	25	40	0.1% of span or 1.0°C
Type T	NIST Monograph 175, IEC 584	–200 to 400	–328 to 752	25	40	0.1% of span or 0.5 °C
DIN Type L	DIN 43710	–200 to 900	–328 to 1652	25	40	0.1% of span or 0.5 °C
DIN Type U	DIN 43710	–200 to 600	–328 to 1112	25	40	0.1% of span or 0.5 °C
Type	ASTME 988-96	0 to 2000	32 to 3632	25	40	0.1% of span or 1.0 °C
W5Re/W26Re
Millivolt Input		–10 to 100 mV			3 mV	0.025 mV + 0.003% of span
2-, 3-, 4-wire Ohm Input		0 to 2000 ohms		20 ohm		0.75 Ω + 0.03% of span

(1)No minimum or maximum span restrictions within the input ranges. Recommended minimum span will hold noise within accuracy specification with damping at zero seconds.

(2)Total digital accuracy for thermocouple measurement: sum of digital accuracy +0.5 °C (cold junction accuracy)

(3)Accuracy for NIST Type B thermocouple is ±3.0 °C from 100 to 300 °C.

When using a Pt 100 (α = 0.00385) sensor input with a 75 to 150 °C range, the accuracy will be 0.05% of span + 0.15 °C or 0.20 °C, whichever is greater. Sample Calculation:[0.0005 (150-75) + 0.15] = 0.19 °C, which is less than 0.20 °C, so the accuracy equals 0.20 °C.

A-3