Features
Wound on Wooden Bobbin.
Enamelled Copper Windings.
Uniform Layering.
Accurate Coil resistance.
Benefits
Withstands 80°C.
Economical Repeatable Measurements.
Suitable for 4-Terminal Kelvin Circuits.
Suitable for Reed Switch Life Tests.
📝 Description
Test Coils are widely acknowledged as the most precise method for evaluating various parameters of Reed Switches, Reed Sensors, or Magnet Sensors. Key parameters such as Operate AT (Ampere Turns), Release AT, Contact Resistance, and other critical metrics can be accurately measured using this method. The Operate Ampere Turn is derived by multiplying the number of turns in the coil by the current at which the switch closes, providing a direct assessment of its magnetic sensitivity.
To ensure accurate measurements, it is essential to maintain the vertical orientation of the coil to prevent interference from the Earth’s magnetic field. Proper centering of the reed switch or sensor within the coils is crucial, and precautions must be taken to avoid the presence of ferro-magnetic materials such as crocodile clips, connectors, or mounting parts nearby, as these can introduce errors in the measurements. For utmost precision, Four-terminal Kelvin measurements are recommended.
Our commitment to providing comprehensive solutions includes offering a variety of Coils available in cylindrical and rectangular shapes, tailored specifically for measuring the performance of our products. Each Test Coil is designed with meticulous attention to detail, ensuring compatibility and accuracy in measurement tasks.
For detailed specifications of our Test Coils and to explore how they can optimize the evaluation process of Reed Switches, Reed Sensors, or Magnet Sensors, please refer to our comprehensive resources and product listings. Our dedication to quality and innovation ensures that our Test Coils deliver reliable results, supporting the integrity and functionality of your applications.
Count on our expertise and commitment to excellence when selecting Test Coils for your measurement needs. We combine industry-leading standards with practical innovation to meet the evolving demands of magnetic sensor technology.
📐Cylincdrical Test Coil Dimensions
| Test Coil Code | 001 | 002 | 003 | 005 | |
|---|---|---|---|---|---|
| Bobbin Length (BL) | mm | 53.5 | 21.0 | 12.0 | 19.0 |
| Winding Length (WL) | mm | 50.8 | 19.0 | 10.0 | 15.0 |
| Flange Outer Diameter (FOD) | mm | 14.1 | 7.7 | 11.0 | 11.0 |
| Flange Inner Diameter (FID) | mm | 5.6 | 3.4 | 2.3 | 2.9 |
| Copper Wire Diameter | mm | 0.090 | 0.050 | 0.060 | 0.071 |
| Coil Resistance | Ω | 845 | 740 | 600 | 450 |
| Turns | 10000 | 5000 | 5000 | 5000 |
📐Rectangular Test Coil Dimensions
| Test Coil Code | 3001 | 3002 | 3003 | 3004 | |
|---|---|---|---|---|---|
| Bobbin Length (BL) | mm | 13.5 | 23.3 | 42.5 | 42.5 |
| Winding Length (WL) | mm | 7.0 | 19.7 | 36.5 | 36.5 |
| Flange Outer Length (FOL) | mm | 18.0 | 20.6 | 28.6 | 35.6 |
| Flange Inner Length (FIL) | mm | 10.0 | 11.6 | 13.6 | 20.8 |
| Flange Outer Width (FOW) | mm | 14.0 | 14.8 | 25.0 | 25.0 |
| Flange Inner Width (FIW) | mm | 6.0 | 6.2 | 13.8 | 13.8 |
| Copper Wire Diameter | mm | 0.05 | 0.08 | 0.15 | 0.15 |
| Coil Resistance | Ω | 2000 | 1900 | 290 | 440 |
| Turns | 5000 | 10000 | 5000 | 5000 |
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