ABB GJR2389800R1210 81ET03N-E Temperature Input Module

Parameter

Specification

Manufacturer

ABB

Model Number

81ET03N-E

Order Code / Part No.

GJR2389800R1210

Product Type

Temperature Input Module

System Compatibility

Procontrol P14, System 800xA, AC 800M Controller Family

Input Channels

8 channels

Sensor Types Supported

Thermocouples, RTDs (Pt100, Ni100, etc.), mV signals

Input Signal Range

±50 mV, 0–10V, 0–20mA, 4–20mA (configurable)

ADC Resolution

24-bit

Temperature Measurement Range

-40°C to +150°C

Accuracy

±0.5°C @ 25°C

Sampling Rate

10 samples/sec

Common Mode Rejection

>120 dB @ 50/60 Hz

Input Impedance

>1 MΩ

Isolation

500V AC (field to logic)

Communication Protocol

Modbus RTU

Operating Voltage

24V DC

Power Consumption

4W (max)

Operating Temperature

-25°C to +70°C

Storage Temperature

-40°C to +85°C

How many temperature input channels does the ABB 81ET03N-E provide?

The module provides 8 independent input channels, each configurable for different sensor types and measurement ranges. This high channel density makes it ideal for applications requiring multiple temperature monitoring points from a single module.

What types of temperature sensors are compatible with the 81ET03N-E?

The module supports a comprehensive range of sensors including:
Thermocouples: Types J, K, T, E, R, S, B, N
RTDs: Pt100, Pt1000, Ni100, Ni1000 (2, 3, and 4-wire configurations)
Millivolt Sources: ±50 mV direct input
Analog Signals: 0–10V and 4–20mA with external signal conditioners 

What is the measurement accuracy of the ABB 81ET03N-E?

The module delivers ±0.5°C accuracy at 25°C ambient temperature, with 24-bit resolution providing exceptional measurement granularity. Temperature drift is minimized through advanced compensation algorithms.

What communication protocol does the 81ET03N-E use?

The module communicates via Modbus RTU protocol, enabling seamless integration with ABB Procontrol P14, System 800xA, and third-party systems. This standard protocol ensures broad compatibility and simplified system integration.

What is the difference between the 81ET03N-E and the 81ET03E?

The 81ET03N-E represents the current revision with enhanced features including:
Higher channel density (8 channels vs. previous lower-density variants)
Improved 24-bit ADC resolution
Extended temperature range support (-40°C to +150°C)
Enhanced noise immunity with >120 dB CMRR
Updated component sourcing for extended lifecycle availability