RKR-C799 — ceramic thermowell C 799 to DIN EN 50446

Alumina > 99 % Al₂O₃ · gas-tight · up to +1,650 °C · Ø 8 – 24 mm

Dimension drawing · dimensions in mm · binding dimensions per order confirmation

Gas-tight ceramic thermowell of high-purity alumina for furnace, melting and firing processes. C 799 can be used up to +1,650 °C and is mandatory with noble-metal thermocouples because it protects the thermocouple wires from contamination. Four diameters are available from stock.

Industrial furnaces, hardening and annealing furnaces
Glass, ceramic and foundry industries
Combustion and exhaust gas processes
Inner thermowell for TSK and TSM-1 thermocouples
Alumina > 99 % Al₂O₃, gas-tight
Temperature-resistant up to +1,650 °C
Ø 8 / 10 / 15 / 24 mm from stock
Special lengths cut from standard tubes

Put a version together and enquire

4 positions from the order key in our catalogue. The configurator shows the type code as you go, checks the combination for plausibility and sends the enquiry straight to us.

Open configurator →

You generate the data sheet for the chosen version in the configurator with "Create PDF". Prefer the phone? +49 6181 504 93 18 · info@ghi-gmbh.de

Technical data

Material

C 799 – alumina > 99 % Al₂O₃ to DIN EN 60672-1

Temperature resistance

+1,650 °C (without mechanical load)

Permeability

gas-tight · good resistance to thermal shock

Density

3,7 g/cm³

Thermal expansion

7 – 8 · 10⁻⁶ K⁻¹ (mean value 30 – 600 °C)

Dielectric strength

17 kV/mm · 4-point bending strength 300 MPa

Other ceramic materials

C 610 (gas-tight, +1,500 °C) · C 530 (porous, +1,500 °C, very good thermal shock) · SiC recrystallised (porous, +1,600 °C) · SiC reaction-bonded (gas-tight, +1,350 °C)

Special lengths

Cut from the standard tubes · further diameters on request

Available lengths per diameter

Ø D × wall s	375 mm	530 mm	740 mm	1.030 mm	1.430 mm	2.030 mm
8,0 × 1,5 mm	•	•	•	•	•	•
10 × 2,0 mm	•	•	•	•	•	•
15 × 2,5 mm	–	•	•	•	•	•
24 × 3,0 mm	–	•	•	•	•	•

Ø 15 and Ø 24 mm are available from 530 mm. Shorter lengths are cut from the next larger standard tube.

Order example

RKR-C799-3-4-1-1

Ø 15 × 2.5 mm, L = 1,030 mm, C 799, works certificate 2.2

Data sheets and operating instructions in the download centre

Typical industries

The assignment names the most common applications and does not exclude others — talk to us if your application is not listed.

Energy, power plants & hydrogen Furnaces, heat treatment, glass & foundry Semiconductors, vacuum & electronics

Metal tube up to +1,250 °C: RMR-A · RMR-C · Complete high-temperature thermocouple: TSM und TSK · All designs: Thermowells

Download data sheet RKR-C799 (PDF) →
Dimension drawing, technical data and the complete order key on two pages.

Please contact us

We are glad to help with questions about products, versions and delivery times.

Dennis Kühne
Phone: +49 6181 504 93 18
Mobile: +49 160 91437153
E-mail: info@ghi-gmbh.de