1. Introduction
The CERTEON CK-DT-A Mini Infrared Temperature Sensor is an industrial-grade, non-contact temperature transmitter designed for continuous monitoring of non-metallic surface temperatures. Utilizing advanced infrared sensing technology, it provides fast and reliable temperature measurement without physical contact, making it ideal for harsh or inaccessible industrial environments. This sensor is commonly applied in industrial automation, process control, and equipment temperature monitoring.
2. Product Overview
The CK-DT-A sensor features a robust design with a metal housing and a low-noise shielded cable for stable performance. It includes an infrared probe for non-contact measurement and a mounting bracket for secure installation.
2.1 Key Features
- Non-contact temperature measurement.
- Industrial-grade design with 304 stainless steel housing.
- Multiple output signal options: 4-20mA, 0-5V, 0-10V, RS485.
- Wide temperature measurement range (customizable).
- Fast response time.
- IP65 protection level.
2.2 Product Dimensions
The sensor has an M18×1.0 thread connection with a total length of 68mm and a diameter of 18mm. The thread length is 32mm.
3. Specifications
| Item | Specification |
|---|---|
| Measurement Principle | Infrared (non-contact) |
| Protection Level | IP65 |
| Ambient Temperature | 0–60°C |
| Storage Temperature | -20–80°C |
| Housing Material | 304 Stainless Steel |
| Cable Length | 1.5m (Standard, Customizable) |
| Dimensions | M18×68mm |
| Emissivity | 0.95 (Fixed) |
| Spectral Range | 8–14µm |
| Temperature Range | 0–600°C (Default); -30–1300°C (Optional) |
| Optical Resolution | 20:1 |
| Response Time | 200ms (Customizable Quick Response 50ms) |
| Temperature Accuracy | ±1% or ±1°C, whichever is greater |
| Repeatability | ±0.5% or ±0.5°C, whichever is greater |
| Power Supply | 24VDC (Default); 12–36VDC, 5–36VDC (5V available on request) |
| Output Signal | 4–20mA (Default, two-wire system); 0–5V, 0–10V, RS485 |
| Thread Connection | M18×1 |
| Thread Length | 32 mm |
| Sensor Body Length | 68 mm |
| Measured Object | Non-metal surfaces only |
*Note: For RS485 output, Baud rate supported: 600-115200bps (Default: 9600), RTU Protocol.
4. Setup and Installation
4.1 Preparation
- Confirm that the power supply voltage and output signal match your control system.
- Ensure the target surface is non-metallic. If the object is metallic, apply high-temperature tape or paint to create a suitable measurement surface.
- Verify that the target diameter is larger than 10 mm.
4.2 Mounting
- Mount the sensor securely using the M18×1 thread.
- Ensure stable fixation and avoid vibration during installation.
- Align the sensor so the target is centered within the sensing area.
4.3 Wiring Method
Connect the cable according to the selected output signal wiring requirements as detailed in the table below:
| Output Signal | Wire Color | Definition | Description |
|---|---|---|---|
| 4–20mA | Red | 24VDC+ | 24VDC Power Positive |
| Black | GND | 24VDC Power Negative | |
| Blue | 4–20mA+ | Signal Output Positive | |
| Orange | AGND | Signal Output Negative | |
| Silver | Shield | Shield Wire | |
| 0–5V/10V Voltage Signal Output | Red | 24VDC+ | 24VDC Power Positive |
| Black | GND | 24VDC Power Negative | |
| White | V+ | Signal Output Positive 0–5V/10V+ | |
| Blue | VGND | Signal Output Negative | |
| Silver | Shield | Shield Wire | |
| RS485 (RTU Protocol) Signal Output | Red | 24VDC+ | Power Positive 24VDC |
| Black | GND | Power Ground GND | |
| Green | A+ | Transmit RS485/TX | |
| Yellow | B- | Receive RS485/RX | |
| Silver | Shield | Shield Wire |
5. Operation
- Power on the device and allow it to stabilize for a few moments.
- Ensure the measured object is stationary or moving slowly.
- Read the temperature value via the connected controller, display unit, or monitoring system.
5.1 Application Range
The CK-DT-A sensor is suitable for a wide range of industrial applications involving non-metallic surfaces. Examples include:
Important Note on Metallic Surfaces: This 8–14 mm long-wave temperature sensor does not perform well in measuring the temperature of shiny or polished metal objects. The metal surface must have a coating, paint, oxide layer, or high-temperature adhesive tape to achieve accurate measurement results. If direct measurement of shiny metals or red-hot objects is required, a short-wave temperature sensor is recommended, which can measure temperatures up to over 3500°C.
6. Precautions
- This sensor is not suitable for direct measurement of bare metallic surfaces.
- Do not exceed the selected temperature range.
- Avoid aiming at fast-moving objects.
- Ensure correct wiring and proper grounding to prevent inaccurate readings or equipment damage.
- This product is intended for industrial use only.
- Do not use the sensor in explosive or flammable environments unless additional certification is provided.
- Incorrect wiring or improper installation may result in equipment damage or inaccurate measurement.
- Keep out of reach of children.
7. Storage and Maintenance
7.1 Storage
- Store the sensor in a dry, clean environment within normal ambient temperature limits.
7.2 Maintenance
- Clean the optical lens gently using a soft, dry cloth.
- Do not use corrosive or abrasive cleaning agents.
- Regularly inspect the housing and cable for signs of damage.
8. Troubleshooting
This section provides solutions to common issues you might encounter with your infrared temperature sensor.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inaccurate Readings | Incorrect target surface (metallic, shiny) Improper wiring/grounding Sensor not stable or vibrating Target too small or moving too fast | Ensure target is non-metallic or apply high-temperature tape/paint. Verify wiring according to the wiring table and ensure proper grounding. Securely mount the sensor to prevent vibration. Ensure target diameter is >10mm and stationary/slow-moving. |
| No Output Signal | Incorrect power supply voltage Wiring error Sensor malfunction | Check power supply voltage against specifications. Re-check all wiring connections. Contact technical support if problem persists. |
| Sensor Not Powering On | No power supply Incorrect voltage/polarity Damaged cable | Verify power source is active. Ensure correct voltage (24VDC or customized) and polarity. Inspect cable for visible damage. |
9. User Tips
- For optimal performance, ensure the sensor is mounted in a location free from excessive dust or steam, which can interfere with infrared readings.
- When customizing the temperature range or output signal, double-check your order specifications to ensure compatibility with your existing system.
- Consider using optional accessories like intelligent display units for easier monitoring and control in your application.
10. Warranty and Support
For technical assistance, warranty claims, or inquiries about customized products, please contact us:
- WhatsApp: +86-19542723588
- Email: celiachen008@gmail.com
We offer customized products tailored to meet your needs for any occasion. For bulk orders or technical consultations, feel free to contact us—we're here to help!
A PDF version of this manual is available for download here.
11. Compliance Disclaimer
This document is provided for product instruction purposes only. It does not constitute legal advice. The seller is responsible for ensuring compliance with all applicable EU directives and regulations.
11.1 Warning Information (EU Market Reference)
WARNING!
This product is intended for industrial use only. Do not use the sensor in explosive or flammable environments unless additional certification is provided. Incorrect wiring or improper installation may result in equipment damage or inaccurate measurement. Keep out of reach of children. Proper disposal must follow WEEE directives for electronic waste.
Note: The above warning information is for reference only. Final warning language must comply with the official language requirements of the destination EU country.
12. Frequently Asked Questions (FAQs)
- Q1: What is the response time of this infrared sensor?
- A1: The standard response time is 200ms, but it can be customized to 50ms if needed.
- Q2: Is the cable length customizable?
- A2: Yes, the standard cable length is 1.5m, but it can be customized based on your requirements (e.g., 5m, 10m).
- Q3: Can I customize the signal output type?
- A3: Yes, signal output types (4-20mA, 0-5V, 0-10V, RS485) can be customized to meet your specific requirements.
- Q4: Can this sensor measure metallic surfaces?
- A4: This 8-14 mm long-wave temperature sensor is not ideal for shiny or polished metallic surfaces. For accurate readings on such surfaces, you must apply a coating, paint, oxide layer, or high-temperature adhesive tape. For direct measurement of shiny metals or red-hot objects, a short-wave temperature sensor is recommended.