Portable oven ADT875-1210

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OVERVIEW of the high-temperature furnace
The Additel ADT875-1210 and ADT878-1210 calibration furnaces are designed for thermocouple calibration across a working range of 100 °C to 1210 °C. They deliver high stability and uniformity, feature interchangeable metal inserts and can be supplied with an optional Process Calibrator (PC) for multi-channel readings, task documentation and HART communication.

Key features

• Temperature range: 100 °C to 1210 °C
• Two models: ADT875 (standard) and ADT878 (reference)
• Display accuracy (varies by model and temperature): e.g. ADT878 ±1.5 °C at 1210 °C (see detailed specs)
• Stability: ±0.1 °C
• Patented Advanced Adaptive Control multizone temperature control with 3-zone control and forced-air technology
• Interchangeable metal inserts (deep XR inserts 138 mm and short XS inserts 115 mm for ADT875)
• Process Calibrator (PC) option: multi-channel readings (reference + up to 4 test channels), mA/voltage measurements, switch tests, 24 V DC loop powering, task logging, screen snapshots and HART communication
• 6.5" color touchscreen; USB A, USB B, RJ45, WiFi, Bluetooth communications
• Factory ISO 17025 accredited calibration provided
• Portable, robust and fast heat-up

Process control and options
The Process Calibrator (PC) option includes Additel's patented Quick-Push connectors compatible with most TC terminations. It allows measuring one reference thermocouple plus up to four UUT channels, performing switch tests, powering 24 V loops, recording tasks (as found / as left) and using HART for transmitter calibration. Snapshot function captures the display and logs channels with automatic step and ramp profiles.

Insert selection
Available inserts:

• Deep inserts (XR) depth 138 mm – models A, D, H (various well configurations: 6 mm, 6.35 mm, etc.)
• Short inserts (XS) depth 115 mm (ADT875 only)
• Multiple insert models (e.g. Model A: 1×6 mm well + 3×6.35 mm wells; Model D: 4×6 mm wells; Model H: 4×6.35 mm wells; Models C, F, G, B, E with varied configurations)

AM1210-12 reference probe supplied (example)
Type S, range 0 °C to 1300 °C, TC wire diameter 0.5 mm, sheath diameter 6 mm, length 305 mm, alumina sheath, protective case included, test report with data provided.

General specifications (extracts)
Temperature range: 100 °C to 1210 °C
Display accuracy (examples by model): ADT875: ±1.2 °C at 100 °C → ±2.0 °C at 1210 °C; ADT878: ±1.0 °C at 100 °C → ±1.5 °C at 1210 °C
Stability: ±0.1 °C
Axial uniformity (20 mm zone) examples: ADT875 ±0.6 °C at 100 °C; ADT878 ±0.4 °C at 100 °C; values increase with temperature (see full table)
Radial uniformity examples: ±0.2 °C at 100 °C; ±1.0 °C at 1210 °C (varies by model)
Load effect: ±0.5 °C
Environmental conditions: accuracy guaranteed 8 °C to 38 °C; operation 0 °C to 50 °C, 0–90% RH non-condensing; normal operating altitude up to 3000 m
Storage: -20 °C to 60 °C
XR insert immersion depth: 138 mm (XS 115 mm ADT875 only)
External diameter (OD): 24.8 mm (0.98")
Heat-up rate: 23 °C → 1210 °C in 50 min (typ.)
Cool-down examples: 1210 °C → 300 °C in 50 min; 300 °C → 50 °C in 50 min (varies by model)
Typical stabilization time: 15 minutes
Resolution: 0.01 °C
Units: °C, °F, K
Display: 6.5" color touchscreen (165 mm)
Dimensions (HxWxD): 345 x 170 x 330 mm
Mass: 10.6 kg
Power: 115 V AC (±10%) or 230 V AC (±10%), switchable, 45–65 Hz, 580 W
Mechanical tests: vibration 2 g (10–500 Hz), shock 3×4 g, drop test 500 mm
Communications: USB A, USB B, RJ45, WiFi, Bluetooth
Languages: English, Chinese, Japanese, Russian, German
Warranty: 1 year

Process Calibrator option specifications (extracts)
TC measurement: accepts S, R, K, B, N, E, J, T, L, U
TC range (UUT channels 1–4): –75 to 75 mV; Ref: –18 to 18 mV
TC resolution: 0.0001 mV; input impedance < 10 Ω
Type K accuracy (examples ch.1-4, without probe): ADT875: ±0.182 °C @100 °C → ±0.517 °C @1210 °C; ADT878: ±0.172 °C @100 °C → ±0.382 °C @1210 °C
Voltage accuracy (example): ADT875 ch.1-4 0.02% rdg + 8 μV; ref ch. 0.01% rdg + 2 μV
Current range: –30 mA to 30 mA; current accuracy example ±(0.02% rdg + 2 μA)
Documentation: up to 1000 tasks storing up to 10 results (as found / as left), records ramp/soak functions, screen snapshot
HART: optional (ADT875PC and ADT878PC)

Note
The ADT878-1210 specifications require use of a deep "XR" style insert.