ماژول ورودی آنالوگ ABB مدل AI843، کد فنی 3BSE028925R1

The AI843 Thermocouple/mV Input Module provides 8 differential input channels for Thermocouple/mV measurements. Measurement ranges configurable per channel are: -30 mV to +75 mV linear, or TC Types B, C, E, J, K, L, N, R, S, T and U. A separate Pt100 channel is used for “Cold Junction” (ambient) temperature measurements, thus serving as CJ-channel for Ch. 1…8.  
The junction temperature may be measured locally on the MTUs screw terminals, or on a connection unit distant form the device. Alternatively, a fix junction temperature for the module may be set by the user (as parameter) or a junction temperature set by the application.
Features and benefits

8 differential input channels for thermocouple/mV
Single or redundant operation
A separate channel is used as CJ-channel (4-wire Pt100 RTD)
Variety of thermocouples with the following characteristics: B, C, E, J, K, L, N, R, S, T and U
16 Bit resolution (A/D converter)
Inputs are monitored for wire-break open-circuit

More info

More info

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Signal range / linearization

Input   Type
Temperature Range

TC type B (1)
44…1820°C, 111.2…3308°F

TC type C
0…2300°C, 32…4172°F

TC type D
0…2300°C, 32…4172°F

TC type E (1)
-270…1000°C, -454…1832°F

TC type J (1)
-210…1200°C, -346…2192°F

TC type K (1)
-270…1372°C, -454…2501.6°F

TC type L
-200…900°C, -328…1652°F

TC type N (1)
-270…1300°C, -454…2372°F

TC type R (1)
-50…1768°C, -58…3214.4°F

TC type S (1)
-50…1768°C, -58…3214.4°F

TC type T (1)
-270…400°C, -454…752°F

TC type U
-200…600°C, -328…1112°F

Linear range
-30…75 mV

Pt100 RTD (for CJC) (2)
-40…100°C, -40…212°F

 
(1)Linearization per IEC 584-1 1995, and following ITS 90 requirements.
(2)Sensor Type applies to Cold Junction channel only, for the measuring of the Cold Junction Compensation temperature. (3BSE028925R1)