Thermocouple connectors are classified into two types according to DIN EN 50212. Type A, commonly known as Standard, is the larger type and is equipped with round pins. Type B, commonly known as miniature or “mini,” is equipped with flat pins. The number of pins is either two or three.
The materials used in the pins correspond to the composition of the corresponding compensating materials specified in DIN EN 60584-3.
| Thermocouple | Material | |
|---|---|---|
| Positive Wire | Negative Wire | |
| T | Copper | Copper-Nickel |
| J | Iron | Copper-Nickel |
| E | Nickel-Chromium | Copper-Nickel |
| K | Nickel-Chromium | Nickel alloy |
| S | Copper | Copper alloy |
| R | Copper | Copper alloy |
| B | Copper | Copper |
| N | Nickel-Chromium-Silicon | Nickel-Silicon |
Thermal plugs are available in 4 different models:
Economy
An economical design featuring a fiber-reinforced nylon body and hollow pins for Type A connectors. They are rated for a continuous operating temperature of 190°C. The connectors are equipped with standard screws.
Standard
Version with a fiber-reinforced thermoplastic housing and solid pins for Form A connectors. They are rated for a continuous operating temperature of 230°C. The connectors are equipped with clamping plates for easy installation.
High Temperature
Version with a fiber-reinforced thermoplastic housing and solid pins for Form A connectors. They are rated for a continuous operating temperature of 350°C. The connectors are equipped with clamping plates for easy installation.
Ceramics
Version with a ceramic/porcelain body and solid pins for Form A connectors. They are rated for a continuous load of 650°C. The connectors are equipped with clamping plates for easy installation.
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