3708E Triconex Invensys Analog Input Module

Model 3708E Overview

The Model 3708E is designed for precise and reliable measurement of thermocouple inputs. It features 16 differential, isolated input signals, providing robust performance in industrial environments. The model supports multiple thermocouple types and ensures high accuracy and reliability through advanced signal processing and diagnostic capabilities.

Key Features

• 16 differential, isolated input signals
• Input update rate: 50 ms
• Supported thermocouple types: J, K, T, E
• Input resistance: 30 MΩ (DC), minimum
• Common mode rejection: -90 dB @ 0-60 Hz, minimum and -100 dB @ DC, minimum
• Normal mode rejection: -17 dB @ 60 Hz, typical
• Common mode range: ±200 VDC, max
• Leg-to-leg isolation: 20 KΩ, typical
• Reference junction compensation range: 32°-140°F (0°-60°C)
• Diagnostic indicators: PASS, FAULT, ACTIVE, CJ FAULT
• Color code: Deep Yellow

Technical Specifications

• Input Channels: 16 thermocouple inputs, types E, J, K, T
• Input Range: Programmable, typical ranges:
  • Type E: -270°C to 1000°C
  • Type J: -210°C to 1200°C
  • Type K: -270°C to 1372°C
  • Type T: -270°C to 400°C
• Accuracy: ±0.1% of reading ±0.5°C
• Resolution: 0.1°C
• Input Impedance: >10 MΩ
• Common Mode Rejection Ratio: >120 dB
• Isolation Voltage: 1500 Vrms
• Power Supply: 10-30 VDC
• Operating Temperature: -40°C to 70°C
• Dimensions: 114 mm x 115 mm x 25 mm