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4 channel RTD PT1000 Temperature Acquisition Module
4 channel RTD PT1000 Temperature Acquisition Module
4 channel RTD PT1000 Temperature Acquisition Module
4 channel RTD PT1000 Temperature Acquisition Module
4 channel RTD PT1000 Temperature Acquisition Module

4 channel RTD PT1000 Temperature Acquisition Module

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Product Attributes

Model No.CT-3744

Packaging & Delivery
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SPS-C Series IO_20260119_11180739
Product Description
CT-3744 4-channel RTD-PT1000 Temperature Acquisition Module
Module Features
The CT-3744 is a high-reliability 4-channel PT1000 temperature acquisition module, designed for applications requiring independent, noise-free temperature monitoring across multiple zones. It supports both 2-wire and 3-wire PT1000 RTD sensors, automatically compensating for lead resistance to ensure accurate and stable readings.
 A key differentiator is its 500V channel-to-channel isolation, which eliminates ground loops and prevents cross-channel interference—making it ideal for electrically complex environments such as battery test chambers, multi-motor drive systems, or installations near high-voltage equipment. This robust isolation architecture significantly enhances system safety and data integrity. As a precision industrial RTD input module, the CT-3744 features a 15-bit ADC resolution, delivering temperature measurement accuracy down to ±0.1°C—perfect for demanding sectors like new energy (e.g., lithium battery formation & aging), pharmaceutical processing, food safety compliance, and laboratory instrumentation. 
Each of the four analog input channels includes a dedicated LED status indicator, enabling instant visual feedback for commissioning, troubleshooting, and maintenance. The module is widely deployed in multi-zone reactor temperature control, cleanroom environmental zoning, battery cycling test systems, and smart building energy management platforms. Designed for DIN-rail mounting and built to industrial standards, the CT-3744 offers a secure, scalable, and high-fidelity solution for multi-channel PT1000 temperature acquisition in modern automation and IIoT infrastructures.
Technical Parameters
General Parameter
Power Max.91mA @ 5.0VDC
Isolation
The isolation voltage between I/O channel and system power is AC500V
The isolation voltage between I/O channel and field power is AC500V
The isolation voltage between I/O channel and PE is AC500V
Channel isolation AC500V
Field power Not used
Wiring
Max.: AWG 18        Min.: AWG 24
Mounting Type 35mm DIN-rail
Size 115*14*75mm
Weight 65g
Environment Specification
Operating Temperature of Vertical Installation -35℃~60℃
Operating Temperature of Horizontal Installation -35℃~70℃
Relative Humidity 5~ 95%RH (No Condensation)
Storage Temperature -40℃~85℃
Storage Humidity 5~ 95%RH (No Condensation)
Manufacturing Test Temperature -40℃~75℃
Ingress Protection Rating IP20
Vibration Resistance Comply with IEC 61131-2 and EC 60068-2-6
Impact resistance Comply with IEC 61131-2 and IEC 60068-2-27
EMC Performance Comply with IEC 61131-2 and IEC 61000-4
Input parameter
Channel Number 4-channel input
Indicator 4 RTD channel input indicator
Resolution 15 Bits
Sensor type PT1000 RTD
Measurement Range -220~850℃
Measurement Accuracy 0.5℃
Conversion Rate 100ms/4 channel
Diagnostic Function
32766:The sensor is not connected or disconnected
-32766:Short Circuited
32765:Chip failure
32767:Overflow
-32768:Underflow
Application scenarios:
Application 2
FQA
Q:RTD type supported?
A:PT1000, 4 channels.
Q:Isolation characteristics?
A:Channel-to-channel isolation.
Q:Applications?
A:Industrial temperature monitoring, environmental measurement.
ODOT Solutions
Certifications & Quality Assurance:
ODOT Products comply with international industrial standards, including CE and RoHS, and undergo strict quality control to ensure long-term reliable operation in industrial environments.
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Fast Delivery  
ODOT maintains sufficient inventory for standard models.
Most products can be shipped within 1-3 working days, helping customers accelerate project schedules.
Professional technical support and application assistance are available throughout the project lifecycle.
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ODOT In Hannover Messe
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