Additel 850 Laboratory Thermocouple Calibration Furnace
Horizontal laboratory thermocouple calibration furnace, 100 to 1200 °C, 3-in-1 with 9 modes (short probes, long probes, annealing). Stability ±0.1 °C; long-mode axial/radial uniformity ±0.2 °C @ 1200 °C. Alumina and metal/cup inserts. 7-inch pivoting touchscreen. From $23,655.
Pick your exact configuration in the ordering table below to add it to your cart.
Same-day response on quotes. ISO/IEC 17025 accredited calibration available.
Overview
The Additel 850 is a horizontal laboratory thermocouple calibration furnace with temperature control from 100 °C to 1200 °C. It is a 3-in-1 furnace: one chassis covers short-probe work, long-probe work, and annealing, with nine selectable modes on the 7-inch pivoting color touchscreen. Multi-zone control, quick-cool, a sliding probe holder with depth graduations and clamp, and patent-pending EMF shielding are built in. Stability is ±0.1 °C (300 to 1200 °C). In the long (deep) modes, axial and radial uniformity are ±0.2 °C at 1200 °C (datasheet Rev 20251203). Set points below 300 °C are allowed; they may take longer to heat and stabilize.
Inserts split noble-metal and base-metal work. The alumina-tube kit (ADT850-1200-ALUM / ADT110-850-ALUM) is for noble-metal thermocouples — 26 mm OD × 20 mm ID long tube and 22 mm OD × 16 mm ID short tube. The long cup (ADT850-1200-CUPL / ADT110-850-CUP-LONG) and optional short cup / multi-hole metal inserts are for base-metal thermocouples. Empty-chamber modes cover mixed noble and base metal work. Display accuracy in long empty-chamber mode is ±5 °C — this is a laboratory furnace meant to be used with an external reference, not a portable dry well. Heater 4000 W, 220 V ±10% 50/60 Hz, 20 A. Size 13.5 × 16.7 × 26.8 in (342 × 424 × 680 mm); 45 kg (99.2 lb) without insert. Wi-Fi, Bluetooth, USB, LAN. 1-year warranty. Certificate of conformity included.
Three 220 V configurations: no insert from $23,655 (ADT850-1200-NO); alumina-tube kit $24,115 (ADT850-1200-ALUM); long cup $25,183 (ADT850-1200-CUPL).
Specifications
| Temperature | |
| Temperature range | 100 °C to 1200 °C (set points below 300 °C may take longer to heat and stabilize) |
| Display accuracy | ±5 °C (long empty chamber mode) |
| Display resolution | 0.01 °C |
| Stability (300–1200 °C) | ±0.1 °C full range (all nine modes) |
| Axial uniformity, long modes | ±0.2 °C full range (300–1200 °C); ±30 mm from geometrical center (empty/alumina) or 60 mm from insert bottom (cup/insert) |
| Radial uniformity, long modes | ±0.2 °C @ 300/700/1200 °C empty chamber; ±0.1 / ±0.15 / ±0.2 °C (300/700/1200 °C) cup/insert; within 14 mm of geometrical center |
| Axial uniformity, short modes | ±0.5 °C empty/cup/insert; ±0.4 °C short alumina (300–1200 °C) |
| Radial uniformity, short modes | ±0.3 °C empty chamber; ±0.25 °C cup/insert @ 300/700/1200 °C |
| Annealing mode | ±0.1 °C stability; ±20 °C @ 1100 °C within 400 mm (100 to 500 mm immersion) |
| Heating / cooling | 40 min 23→1200 °C empty well; 90 min 1200→300 °C empty well |
| 9 modes (3-in-1) | |
| Long empty chamber | Noble and base metal TC; no insert; immersion 310–370 mm (center 340 mm) |
| Long cup / long insert | Base metal TC; long cup 36.5 × 28.5 × 80 mm or multi-hole block 36.5 × 80 mm; 370 mm to insert bottom |
| Long alumina tube | Noble metal TC; 26 mm OD × 20 mm ID × 630 mm; immersion 310–370 mm |
| Short empty / cup / insert / alumina | Short noble and base metal TC; immersion 200–240 mm (center 220 mm); short alumina 22 mm OD × 16 mm ID × 630 mm |
| TC annealing | Noble metal TC annealing; no insert; 100 to 500 mm |
| Inserts / variants | |
| ADT850-1200-NO | No insert, 220 V; from $23,655 |
| ADT850-1200-ALUM | Alumina-tube TC calibration kit (noble metal), 220 V; $24,115 |
| ADT850-1200-CUPL | Long / deep cup (base metal), 220 V; $25,183 |
| Optional inserts | ADT110-850-CUP-SHORT, ADT110-850-INS-LONG / INS-SHORT (7 × 8.5 mm holes), ADT110-850-ALUM kit |
| General | |
| Display | 7 in (178 mm) pivoting color touchscreen; 0.01 °C |
| Size / weight | 13.5 × 16.7 × 26.8 in (342 × 424 × 680 mm); 45 kg (99.2 lb) without insert |
| Power | 4000 W heater; 20 A, 220 V ±10%, 50/60 Hz; 30 A / 250 V resettable breaker |
| Communication | Wi-Fi, Bluetooth, USB, LAN |
| Probe holder | Sliding holder with depth graduations and clamp for mechanical stability and precise immersion |
| Operating / storage | 0 to 50 °C, 0–90% RH non-condensing, <2000 m; storage −20 to 70 °C |
| Warranty | 1 year |
| Starting price | From $23,655 (ADT850-1200-NO); ALUM $24,115; CUPL $25,183 |
Videos
Documents
Ordering information
3 ordering models available.
| Model | Description | List Price | |
|---|---|---|---|
| ADT850-1200-ALUM | Laboratory Thermocouple Calibration Furnace, 300°C to 1200°C, with alumina tube TC calibration kit, 220V | $24,115.00 | |
| ADT850-1200-CUPL | Laboratory Thermocouple Calibration Furnace, 300°C to 1200°C, with TC calibration cup, deep cup style, 220V | $25,183.00 | |
| ADT850-1200-NO | Laboratory Thermocouple Calibration Furnace, 300°C to 1200°C, No Insert, 220V | $23,655.00 |
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