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Foxboro AI2 2500M/AI2/XXXXX/XXXXXX 2-channel universal analog input module

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Manufacturer	Foxboro
Part Numbers	AI2 2500M/AI2/XXXXX/XXXXXX
Series	2500
Product Origin	USA
Payment	T/T
Condition	New

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Product Details

Overview

The AI2 2500M/AI2/XXXXX/XXXXXX is a 2-channel universal analog input module originally manufactured by Eurotherm (now part of Invensys Foxboro).

This analogue input module is used to monitor analogue signals from a wide range of plant sensors. The mA and TC inputs each require the appropriate Terminal Unit.

The second channel of the AI2 has a special high impedance range for use with zirconia probe inputs.

No. of Channels	2
Input Types	TC, RTD, Volts, mA, mV, Potentiometer, Pyrometer, Zirconia Probe
mV Range	-150 mV to +150 mV at input impedance >100 MΩ
mA Range	-22 mA to +22 mA with 5 Ω burden in the Terminal Unit
Volts Range	-10.2 V to +10.2 V at input impedance 303 kΩ
RTD Support	Supports 2-, 3-, and 4-wire resistance thermometer devices
Ohms Range	0 to 600 Ω, with 3- or 4-wire lead compensation
Hi Ohms Range	0 to 5 kΩ, with 3- or 4-wire lead compensation
Potentiometer Range	5% to 95% rotation of 100 Ω to 5 kΩ potentiometer
Resolution	Better than 0.001% of range
Linearity	Better than 0.003% of range
Input Filtering	OFF to 999.9 seconds
Input Accuracy	Electrical input factory calibrated to better than 0.1% of reading
System Isolation	Reinforced, 264 V AC max
Channel Isolation	Reinforced, 264 V AC max between thermocouple channels
Functional Isolation	264 V AC max between RTD, volts, and mA
Series Mode Rejection	60 dB (50 Hz to 60 Hz, 1 mA rms)
Common Mode Rejection	120 dB (50 Hz to 5 kHz, 50 V rms)
Current Consumption	100 mA max

TC Input specification

Linearisation Types	J, K, L, R, B, N, T, S, C, PL2, PT100, Linear, Square Root, plus Custom
CJC System	Measured by RTD fitted on Terminal Unit
CJC Accuracy	±0.5°C over -10°C to +70°C
CJC Rejection	Better than 30:1
Initial Accuracy	±1°C or ±0.2% of reading (whichever is greater, standard thermocouples)

2500 Unit Controller

High performance, high accuracy, high functionality in an I/O system that provides cost effective access to a wide range of advanced functions including PID control with auto tuning and gain scheduling.

Designed to communicate with Modbus RTU™, Profibus™, DeviceNet™ or Modbus TCP/IP masters, it can be used for signal conditioning, alarm monitoring, remote data acquisition or devolved control, for systems such as the Eurotherm Visual Supervisor, PC based SCADA packages and PLC’s.

Eight PID blocks, provide an extensive range of control strategies. Each block offers one-shot auto tuning to optimise control performance without the need for specialist knowledge. Every PID block may be a Single PID, Cascade, Ratio or Override controller, each providing the choice of analogue, time proportioned or valve position output.

Six base sizes are available to take from 2 to 16 I/O modules each. Up to 16 bases may be daisy chained to provide acquisition and multiloop control solutions with up to 128 loops.

DIN rail mounting allows the 2500 to be located where the control action is required, minimising the cost of the cable used, as only the communications need be taken to the User Interface. The 2500 may also be mounted on part of the machine, saving the cost of centralised control cubicles.

A friendly Windows configurator package, ‘iTools’ is used to set up the 2500. ‘iTools’ parameterises and commissions the I/O points, the Toolkit and PID function blocks and interconnects the different variables, alarms, function blocks and I/O. ‘Toolkit blocks’ provide local combinational logic and mathematical calculation.

MECHANICAL INSTALLATION

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FAQ

How does the Foxboro AI2 2500M/AI2/XXXXX/XXXXXX enhance measurement versatility across multiple industrial input signal types?

The Foxboro AI2 2500M/AI2/XXXXX/XXXXXX supports a broad spectrum of input signals, including thermocouples (TC), RTDs, mV, V, mA, resistance, potentiometers, pyrometers, and zirconia probes, enabling flexible integration into diverse process control applications.

Why is the Foxboro AI2 2500M/AI2/XXXXX/XXXXXX considered a high-precision analog input module for demanding process automation systems?

The Foxboro AI2 2500M/AI2/XXXXX/XXXXXX delivers exceptional measurement performance with better than 0.001% resolution, 0.003% linearity, and factory-calibrated electrical input accuracy exceeding 0.1% of reading.

What isolation architecture distinguishes the Foxboro AI2 2500M/AI2/XXXXX/XXXXXX in electrically demanding industrial environments?

The Foxboro AI2 2500M/AI2/XXXXX/XXXXXX incorporates reinforced 264 VAC system, channel, and functional isolation, effectively minimizing electrical interference while improving operational safety and measurement reliability.

Which advanced temperature sensing technologies are compatible with the Foxboro AI2 2500M/AI2/XXXXX/XXXXXX, and how does it optimize thermal measurement accuracy?

The Foxboro AI2 2500M/AI2/XXXXX/XXXXXX supports multiple thermocouple types (J, K, L, R, B, N, T, S, C, PL2) as well as PT100 RTDs. Its integrated cold junction compensation (CJC) system provides ±0.5°C accuracy over a wide operating temperature range.

How does the Foxboro AI2 2500M/AI2/XXXXX/XXXXXX maintain stable analog signal acquisition in electrically noisy industrial installations?

The Foxboro AI2 2500M/AI2/XXXXX/XXXXXX features outstanding 60 dB series mode rejection, 120 dB common mode rejection, configurable input filtering from OFF to 999.9 seconds, and robust channel isolation to ensure highly stable and noise-resistant signal processing.

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