Allen-Bradley 1746-NT8 User Manual

Publication 1746-UM022B-EN-P - January 2005
4-8 Channel Configuration, Data, and Status
1746-NT8 Thermocouple Module - Channel Data Word Format
1746-NT8 Thermocouple Module - Channel Data Word Resolution
Data Format
Input Type Engineering Units x10 Engineering Units x1 Scaled for PID Proportional
Counts
°Celsius °Fahrenheit °Celsius °Fahrenheit
J -210 to +760 -346 to +1400 -2100 to +7600 -3460 to +14000 0 to +16383 -32768 to +32767
K -270 to +1370 -454 to +2498 -2700 to +13700 -4540 to +24980 0 to +16383 -32768 to +32767
T -270 to +400 -454 to +752 -2700 to +4000 -4540 to +7520 0 to +16383 -32768 to +32767
E -270 to +1000 -454 to +1832 -2700 to +10000 -4540 to +18320 0 to +16383 -32768 to +32767
R 0 to +1768 +32 to +3214 0 to +17680 +320 to+32140 0 to +16383 -32768 to +32767
S 0 to +1768 +32 to +2372 0 to +17680 +320 to +32140 0 to +16383 -32768 to +32767
B +300 to +1820 +572 to +3308 +3000 to +18200
+5720 to +3276.7
(2)
0 to +16383 -32768 to +32767
N 0 to +1300 +32 to +2372 0 to +13000 +320 to +23720 0 to +16383 -32768 to +32767
±50 mV
(1)
-500 to +500 -500 to +500 -5000 to +5000 -5000 to +5000 0 to +16383 -32768 to +32767
±100 mV
(1)
-1000 to +1000 -1000 to +1000 -10000 to +1000 -10000 to +10000 0 to +16383 -32768 to +32767
CJC Sensor -25 to +105 -13 to +221 -250 to +1050 -130 to +2210 0 to +16383 -32768 to +32767
(1) When millivolts are selected, the temperature setting is ignored. Analog input data is the same for either °C or °F selection.
(2) Type B thermocouple cannot be represented in engineering units x1 (°F) above 3276.7°F. Software treats it as an over range error.
Data Format
Input
Type
Engineering Units x10 Engineering Units x1 Scaled for PID Proportional Counts
°Celsius °Fahrenheit °Celsius °Fahrenheit °Celsius °Fahrenheit °Celsius °Fahrenheit
J 1°C/step 1°F/step 1°C/step 1°F/step 0.0592°C/step 0.1066°F/step 0.0148°C/step 0.0266°F/step
K 1°C/step 1°F/step 1°C/step 1°F/step 0.1001°C/step 0.1802°F/step 0.0250°C/step 0.0450°F/step
T 1°C/step 1°F/step 1°C/step 1°F/step 0.0409°C/step 0.0736°F/step 0.0102°C/step 0.0184°F/step
E 1°C/step 1°F/step 1°C/step 1°F/step 0.0775°C/step 0.1395°F/step 0.0194°C/step 0.0349°F/step
R 1°C/step 1°F/step 1°C/step 1°F/step 0.1079°C/step 0.1942°F/step 0.0270°C/step 0.0486°F/step
S 1°C/step 1°F/step 1°C/step 1°F/step 0.1079°C/step 0.1942°F/step 0.0270°C/step 0.0486°F/step
B 1°C/step 1°F/step 1°C/step 1°F/step 0.0928°C/step 0.1670°F/step 0.0232°C/step 0.0417°F/step
N 1°C/step 1°F/step 1°C/step 1°F/step 0.0793°C/step 0.1428°F/step 0.0198°C/step 0.0357°F/step
±50 mV
(1)
0.1mV/step 0.1mV/step 0.1mV/step 0.1mV/step 6.104µV/step 6.104µV/step 1.526µV/step 1.526µV/step
±100 mV
(1)
0.1mV/step 0.1mV/step 0.1mV/step 0.1mV/step 12.21µV/step 12.21µV/step 3.052µV/step 3.052µV/step
CJC
Sensor
1°C/step 1°F/step 1°C/step 1°F/step 0.0079°C/step 0.0143°F/step 0.0020°C/step 0.0036°F/step
(1) When millivolts are selected, the temperature setting is ignored. Analog input data is the same for either °C or °F selection.

Allen-Bradley 1746-NT8 Specifications

General

Brand	Allen-Bradley
Model	1746-NT8
Category	I/O Systems
Language	English