1. Introduction
The TAIHUA TS-TR series thermal resistance signal isolator is designed to accept thermal resistance signals from various field devices and convert them into standard current or voltage signals for transmission to control systems such as PLCs, DCS, and display instruments. This device ensures signal isolation and reliable data transfer in industrial environments. It features a mini USB interface for easy configuration via a PC and offers optional RS485 communication functionality.
The product requires an independent power supply and is designed for DIN35mm standard guide rail installation. It provides mutual isolation between input, output, and power supply to enhance system stability and safety.
Video: Overview of the TAIHUA TS-TR Series Signal Isolator, demonstrating its physical appearance, DIN rail mounting, and signal conversion capabilities with measurement devices.
2. Specifications
2.1 General Specifications
- Model Number: TS-TR Series
- Display Type: Analogue and Digital
- DIY Supplies: Electrical
- Origin: Mainland China
- Certification: CE
- Battery Included: No
- High-concerned chemical: None
2.2 Performance Parameters
Image: Details on Accuracy & Stability and Other Performance Parameters.
- Accuracy Class: 0.1% F.S
- Temperature Drift: ±0.01% F.S
- Operating Temperature: -20℃ to +55℃
- Testing Voltage: DC24V
- Measuring Range: DC18-32V
- Consumption Current: ≤80mA (for 1 IN 1 OUT, 24V, 20mA output)
- Response Time: ≤1S (0-90%) (Typical)
- Protection Level: The circuit board is fully automatic painted with three-proofing paint, preventing dust, moisture, and electric leakage.
- Insulation Strength: 2000V AC/in (Among power, input and output)
- Insulation Resistance: ≥100MΩ (Among power, input, output and shell)
2.3 Dimensions
Image: Overall dimensions of the signal isolator (L × H × W) 118mm × 106.5mm × 17.5mm.
- Overall Dimensions (L × H × W): 118mm × 106.5mm × 17.5mm
2.4 Input/Output Signal Selection
| Category | Code | Description |
|---|---|---|
| Channel | X | Instructions |
| 1 | 1 IN / 1 OUT | |
| 2 | 1 IN / 2 OUT | |
| 5 | 2 IN / 2 OUT | |
| Input Signal | C5 | Cu50 (-50℃ ~ +150℃) |
| C1 | Cu100 (-50℃ ~ +150℃) | |
| P1 | Pt100 (-50℃ ~ +150℃) | |
| P2 | Pt1000 (-50℃ ~ +150℃) | |
| P5 | Pt500 (-50℃ ~ +150℃) | |
| N1 | Ni100 (-50℃ ~ +150℃) | |
| N2 | Ni1000 (-50℃ ~ +150℃) | |
| N5 | Ni500 (-50℃ ~ +150℃) | |
| R3 | Resistance, Potentiometer (0~3KΩ) | |
| R5 | Resistance, Potentiometer (0~5KΩ) | |
| Output Signal | 1 | 4-20mA |
| 2 | 0-20mA | |
| 4 | 0-5V | |
| 6 | 0-10V |
Product Selection Example: TS-TR5C51/0-100 indicates a 2 IN/2 OUT unit with Cu50 input (-50℃~+150℃) and 4-20mA output.
2.5 Thermal Resistance Input Signal Ranges
| Graduation | Measurement Range | Min. Range | Conversion Accuracy |
|---|---|---|---|
| Cu50 | 400~+1820℃ | 500℃ | 1.5℃/±0.1% |
| Cu100 | -100~+1000℃ | 50℃ | 0.5℃/±0.1% |
| Pt100 | -100~+1200℃ | 50℃ | 0.5℃/±0.1% |
| Pt1000 | -180~+1372℃ | 50℃ | 0.5℃/±0.1% |
| Pt500 | -180~+1300℃ | 50℃ | 0.5℃/±0.1% |
| Ni100 | -50~+1760℃ | 500℃ | 1.5℃/±0.1% |
| Ni1000 | -50~+1760℃ | 500℃ | 1.5℃/±0.1% |
| Ni500 | -200~+400℃ | 50℃ | 0.5℃/±0.1% |
| R5 | 0~+5KΩ | 10Ω | 0.1Ω/±0.1% |
3. Setup and Installation
3.1 Mounting
The TS-TR series signal isolator is designed for standard DIN35mm guide rail mounting. Ensure the rail is securely installed in your control cabinet or enclosure.
Image: Multiple TS-TR series signal isolators installed on a 35mm DIN-rail.
3.2 Wiring Diagrams
Proper wiring is crucial for the correct operation and safety of the device. Refer to the specific wiring diagrams below based on your input signal type and channel configuration.
3.2.1 Thermocouple Wiring Diagram (TS-TC Series)
Image: Thermocouple Wiring Diagram for TS-TC2XX (1 IN 2 OUT) and TS-TC1XX (1 IN 1 OUT) models, showing connections for input (TC1, TC2, Pt1000 external cold end), power (DC24V), and outputs (OUT1, OUT2 to DCS/PLC with 4-20mA and RS485).
Image: Thermocouple Wiring Diagram for TS-TC5XX (2 IN 2 OUT) models. Note 1: When inputting thermocouples, the compensation wire should be directly connected to the input terminal; other materials should not be used in the middle, otherwise measurement will be free of charge. Note 2: Bus power supply and RS485 output functions are optional. Specify and purchase a bus power supply module separately if needed.
3.2.2 Thermal Resistance Wiring Diagram (TS-TR Series)
Image: Thermal Resistance Wiring Diagram for TS-TR2XX (1 IN 2 OUT) and TS-TR1XX (1 IN 1 OUT) models, showing connections for 2-wire/3-wire potentiometer and thermal resistance inputs, power (DC24V), and outputs (OUT1, OUT2 to DCS/PLC with 4-20mA and RS485).
Image: Thermal Resistance Wiring Diagram for TS-TR5XX (2 IN 2 OUT) models. Note 1: Terminals 9, 10 (TS-TR2XX), 7, 8 (TS-TR5XX), 11, 12 (TS-TR5XX) must be short-circuited when the two-wire thermistor or potentiometer signal is input. The two-wire connection method cannot eliminate wire resistance, and the error will increase. Note 2: When the three-wire thermal resistor or potentiometer signal is input, try to ensure that the resistance values of the three wires are equal.
3.3 Power Supply
The TS-TR series signal isolator requires an independent DC24V power supply. Ensure the power supply is stable and within the specified voltage range (DC18-32V).
4. Operation
4.1 Signal Conversion
The device receives thermal resistance or thermocouple signals and converts them into standard 4-20mA, 0-20mA, 0-5V, or 0-10V current/voltage signals as configured.
Image: Intelligent Matching diagram illustrating various input sensors (PT100, K-type thermocouple, analog signal) and compatible output devices (PLC, paperless recorder, digital display meter).
4.2 Configuration via USB Interface
The TS-TR series signal isolator can be configured using a PC via its mini USB interface. A dedicated programming cable and software are required.
Image: Close-up view of the mini USB interface on the front panel of the signal isolator, labeled 'PRO'.
Image: Screenshot of the software configuration interface, showing options for input channel settings (graduation, range, cold junction compensation), online monitoring, and output channel settings (type, upper/lower limits).
Using the software, you can configure parameters such as:
- Input signal graduation number (e.g., Pt100, Cu50)
- Input signal range
- Alarm output value
- Output signal range and type (e.g., 4-20mA, 0-10V)
The device also supports RS485 communication function, which may require customization.
5. Maintenance
The TS-TR series signal isolator is designed for high reliability and minimal maintenance. The circuit board is protected with a three-proofing paint to resist dust, moisture, and electric leakage.
- Cleaning: Keep the device clean and free from dust. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
- Environmental Conditions: Ensure the operating environment is within the specified temperature range (-20℃ to +55℃) and free from excessive humidity or corrosive gases.
- Inspection: Periodically inspect wiring connections to ensure they are secure and free from damage.
6. Troubleshooting
If you encounter issues with your TS-TR series signal isolator, consider the following common troubleshooting steps:
- No Output/Incorrect Output:
- Verify the power supply voltage is within the DC18-32V range and stable.
- Check all wiring connections according to the appropriate wiring diagram for your model and input type. Ensure no loose connections.
- Confirm the input sensor (thermal resistance/thermocouple) is correctly connected and functioning.
- Review the device configuration using the PC software to ensure the correct input type, range, and output type are selected.
- For 2-wire thermistor/potentiometer inputs, ensure the specified terminals are short-circuited as per the wiring diagram notes.
- Interference Issues:
- Ensure proper grounding of the system.
- Check for strong electromagnetic interference sources near the device. The device has anti-interference capabilities, but extreme conditions can still affect performance.
- Verify that input, output, and power supply are mutually isolated.
- Software Connection Issues:
- Ensure the dedicated programming cable is correctly connected to the mini USB interface and the PC.
- Check if the correct COM port is selected in the software.
- Restart the software and/or the PC.
If the problem persists after performing these checks, please contact technical support.
7. User Tips
No specific user tips were available from reviews or Q&A for this product. However, general best practices for industrial signal converters include:
- Always double-check wiring before applying power to prevent damage.
- Utilize the PC configuration software to fine-tune settings for optimal accuracy and performance in your specific application.
- Consider using shielded cables for input and output signals in noisy industrial environments to minimize interference.
8. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your vendor or the manufacturer directly. Ensure you have your product model number and any relevant purchase details available when seeking support.
The manufacturer is committed to providing reliable products and support. For any issues, please reach out to the TAIHUA INSTRUMENT FACTORY Store.
