1-20 Model
The thermocouple model is designed of grounded thermocouple wire with 1.2mm diameter and ceramic beads. It's the sensor insert for some thermocouple high temperature probes with a sheath. It's not recommended to use it to measure temperature in agressive environments without a sheath, because a grounded wire isn't protected from agressive impact.
NOTE! It's prohibited to use the probe to measure temperature of melts containing nitric acid and nitrates, and to use it in reducing atmospheres and atmospheres containing high level ammonia.
Technical specifications
| Type and Nominal Resistance | Type К, Type L |
| Accuracy | 1, 2 |
| Junction type | Grounded |
| Sheath material | Ceramic |
| Process temperature range, °С | 0...1000 (type L) 0...600 (type K) |
| Thermal inertia, sec | 5...7 |
Dimensions
| Length of the immersion part, L, mm | 250, 320, 400, 500, 630, 800, 1000, 1250, 1500, 2000... up to 20 000 |
| Ceramic beads diameter, mm | Ø6,5 |
| Wire diameter, mm | Ø1,2 |