Products Description
Foxboro FBM01/43 Thermocouple Analog Input Fieldbus Module

Technical Specifications
Model:FBM01/43
Brand:Foxboro
System compatibility:I/A Series DCS legacy FBM fieldbus I/O subsystem
Function:8‑channel thermocouple input fieldbus module,collects multi‑type thermocouple temperature signals,built‑in CJC cold‑junction compensation,matched with 43‑style termination assembly
Installation:Baseplate‑mount installation,mated with dedicated FBM baseplate and 43‑series termination assembly
Input channel:8‑channel thermocouple input,support J,K,T,E,R,S,B thermocouple types
Circuit feature:Built‑in high‑precision CJC cold‑junction compensation circuit,high common‑mode rejection ratio
Feature:Support hot‑swap online replacement without subsystem power‑off
Diagnostic:Front‑panel multi‑color LED indicators for module power and fieldbus communication status,hardware open‑circuit detection
Power supply:Powered via FBM baseplate backplane
Protection:Transient surge protection for signal terminals
Environmental standard:Compliant with ISA‑S71.04 Class G3 industrial atmospheric condition
Housing:Aluminum alloy metal housing,slot‑in mechanical locking structure
Protection class:IP20
Horizontal operating temperature:0℃ ~ +60℃
Vertical operating temperature:‑20℃ ~ +55℃
Storage temperature:‑40℃ ~ +85℃
Relative humidity:5%‑95% non‑condensing
Weight:0.99kg
Dimensions:36mm ×128mm ×144mm
Certification:CE,UL
MTBF:>83000 hours

Built‑in function
FBM01/43 thermocouple input module acquires temperature signals from field thermocouple sensors for Foxboro I/A‑Series DCS system. Matched with 43‑style termination assembly for field wiring connection. Built‑in CJC cold‑junction compensation guarantees measuring accuracy. Open‑circuit diagnosis quickly locates sensor wiring faults. Hot‑swap supports online replacement,widely applied for furnace,reactor temperature monitoring loops in petrochemical,chemical and power‑plant facilities.
Product Brief
FBM01/43 belongs to Foxboro I/A Series legacy DCS temperature‑input spare‑part family,obsolete original baseplate‑mount thermocouple acquisition module component. Must match with corresponding FBM baseplate and 43‑series termination assembly. Widely used for original Foxboro DCS equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation.