ACROMAG 651T-0600

Product Category: Industrial Data Acquisition Module (DIN-Rail Mount)

Product Introduction:
The 651T-0600 is a 6-channel thermocouple input signal conditioner that accepts multiple thermocouple types and provides cold-junction compensation, linearization, and isolation. It outputs a 4–20 mA current loop or 0–10 V signal for PLC/DCS integration.

Category: Others

Description

Technical Specifications:

Parameter	Value
Channels	6 isolated inputs
Thermocouple Types	J, K, T, E, R, S, B, N
Input Range	-200°C to +1800°C (type-dependent)
Accuracy	±0.1% of span + 1°C
Cold Junction Compensation	Internal, automatic
Output Signal	4–20 mA (2-wire) or 0–10 VDC
Isolation	1500 VDC channel-to-channel, channel-to-ground
Power Supply	24 VDC ±10%
Operating Temperature	0°C to +60°C
Mounting	DIN-Rail (35mm)
Dimensions	99 x 120 x 25 mm (W x H x D)
Certifications	CE, UL, CSA

Functional Features:

Supports all 8 standard thermocouple types via software configuration
Built-in cold-junction compensation eliminates external reference junction
Programmable input filtering (50/60 Hz rejection)
Diagnostic LED per channel for open/short detection

Performance Parameters:

Resolution: 16-bit ADC
Update Rate: 10 samples/second (all channels)
Isolation Voltage: 1500 VDC RMS
Loop Power: 24 VDC, 50 mA max

Material Composition:

Component	Material
Housing	Glass-filled polycarbonate, UL94V-0
Terminals	Phosphor bronze, gold-plated
PCB	FR-4, conformal coated

Working Principle:
Each thermocouple input is amplified by a precision instrumentation amplifier. The module measures the thermocouple voltage and the internal cold-junction temperature (via precision RTD). It applies NIST polynomial linearization to convert the thermoelectric voltage to temperature, then scales the result to the configured output range (4–20 mA or 0–10 V).

Key Advantages:

Universal thermocouple support — no hardware changes needed
High isolation prevents ground loops in industrial environments
DIN-rail form factor for panel mounting
LED diagnostics reduce troubleshooting time

Applicable Industries:

Oil & Gas (temperature monitoring)
Power Generation
Food & Beverage (HACCP compliance)
Pharmaceutical Manufacturing
Water/Wastewater Treatment
HVAC Control

Installation Requirements:

Mount on standard 35mm DIN-Rail
Connect thermocouple wires using correct polarity
Set thermocouple type via DIP switches or software
Terminate loop at 250 Ω for 4–20 mA operation

Usage Precautions:

Do not exceed 1500 VDC isolation rating
Use shielded thermocouple cable in high-EMI environments
Verify thermocouple type setting matches installed sensor
Do not operate above +60°C ambient

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