Foxboro AD202MV Millivolt / Thermocouple Input Module

Technical Specifications

Model:AD202MV

Brand:Foxboro

System compatibility:Spec‑200 analog DCS system

Function:Millivolt signal conditioning and thermocouple temperature acquisition

Input signal:Low‑level millivolt input,multi‑type thermocouple sensor signal

Compensation:On‑board cold‑junction temperature compensation for thermocouple measurement

Installation:Standard Spec‑200 rack slot,direct backplane bus connection

Input impedance:＞10MΩ high‑impedance input circuit

Protection:Built‑in transient surge and over‑voltage input protection

Accuracy:±0.15% full scale

Response time:7ms typical signal conversion cycle

Diagnostic:On‑board LED indicators for module power status and channel fault alarm

Environmental standard:Compliant with ISA‑S71.04 Class G3 industrial atmospheric condition

Housing:Metal shielded rack‑mount housing,anti‑vibration mechanical reinforcement

Protection class:IP20

Horizontal operating temperature:0℃ ~ +60℃

Vertical operating temperature:‑20℃ ~ +55℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5%‑95% non‑condensing

Weight:0.49kg

Dimensions:34mm × 126mm × 142mm

Certification:CE,UL

MTBF:>88000 hours

Built‑in function

AD202MV input module receives millivolt signals from field thermocouple sensors,adopts built‑in cold‑junction compensation to eliminate cold‑end measurement deviation,converts raw temperature signal into internal bus data for Spec‑200 rack processing. High‑impedance input circuit reduces signal loss for weak millivolt signals. Shielded metal housing restrains electromagnetic interference,suitable for temperature measurement loops in petrochemical,chemical and power‑plant facilities. LED status indicators help field staff quickly locate power and channel abnormal conditions.

Product Brief

AD202MV belongs to Foxboro Spec‑200 legacy DCS spare‑part family,obsolete original plug‑in automation component. It needs to be fitted into matching Spec‑200 instrument rack with correct thermocouple field wiring. Widely used for original Foxboro DCS equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation