Four channels for both two-conductor and four-conductor HART transmitters
Intrinsically safe Ex ia IIC inputs with line fault monitoring
Module in Zone 1 can be hot swapped
Functional Description - The 9461/12-xx-21 series HART Analog Input Module for Zone 1 has four channels for Ex i operating and supplying two-conductor HART transmitters and four channels for Ex i operating active four-conductor HART transmitters with 0/4 to 20 mA signals. HART communication is bidirectional. All inputs are short-circuit proof, galvanically separated from the system and monitored to check for wire breakage/short-circuiting.

EXPLOSION PROTECTION
Application range (zones) - 1, 2, 21, 22
IECEX gas certificate - PTB 06.0001 X
IECEx gas explosion protection - Ex ib [ia Ga] IIC T4 Gb
IECEx dust certificate - PTB 06.0001 X
IECEx dust explosion protection - [Ex ia Da] IIIC
ATEX gas certificate - PTB 99 ATEX 2175
ATEX gas explosion protection - II 2 (1) G Ex ib [ia Ga] IIC T4 Gb
ATEX dust certificate - PTB 99 ATEX 2175
ATEX dust explosion protection - II (1) D [Ex ia Da] IIIC

Parameter Name	Parameter Value
Signal type	analog
Type	remote
Number of inputs/outputs	8-channel 4-channel
Other characteristics	explosion-proof