COMET GD1250-1/0 – Robust Type K Thermocouple (-65 to +980 °C), without connector

COMET GD1250-1/0 – robust Type K thermocouple (-65 to +980 °C), Nextel ceramic duplex insulation, Ø 4 mm, Class 1 accuracy (±1.5 °C or ±0.4 %), without connector 

The COMET GD1250-1/0 is a professional Type K thermocouple without connector, featuring duplex Nextel ceramic insulation – the ideal high-temperature probe for precise measurements in furnaces, burners, exhaust systems, heat treatment equipment, melting furnaces, dryers, engine test stands, laboratories, industrial processes, or anywhere temperatures up to +980 °C need to be measured reliably and with long-term stability. With a measuring range of -65 to +980 °C and Class 1 accuracy according to IEC 584‑2 (±1.5 °C or ±0.4 % of reading – whichever is higher), it meets the highest requirements for precision and stability. The duplex insulation made of Nextel ceramic (outer diameter 4 mm) provides excellent heat resistance, mechanical strength, and durability – even under vibration, aggressive atmospheres, and high temperatures.

No integrated connector – ideal for custom wiring, direct connection to terminals, controllers, loggers, or customer-specific interfaces. The thermocouple is optionally available with various cable lengths – simply select the desired length in the configurator. The probe is ready for immediate use, calibrated, and supplied with a traceable calibration certificate. Whether as an open-wire probe for special installations, as a replacement in existing systems, or for new measurement tasks – the GD1250‑1/0 impresses with top quality, reliability, and flexibility during installation.

The thermocouple is maintenance-free, long-term stable, and designed for tough industrial operation. The Nextel insulation provides optimum protection of the wires against oxidation, mechanical stress, and thermal aging – significantly more durable than glass fiber or Teflon-insulated types at high temperatures. Easy to use: insert or connect the probe, start measuring. The slim design (Ø 4 mm) allows installation even in narrow bores, pipes, or confined chambers. Whether as a single probe in the lab, a multi-probe setup in production, or as a reference in calibration – the GD1250‑1/0 is the first choice for professionals who value accuracy and durability.

Why the COMET GD1250‑1/0 is the best Type K thermocouple without connector:

• Wide temperature range – -65 to +980 °C – for cryogenic to high-temperature applications
• Class 1 accuracy according to IEC 584‑2 – ±1.5 °C or ±0.4 % (whichever is higher)
• Duplex Nextel ceramic insulation – extremely heat-resistant and mechanically robust
• Outer diameter only 4 mm – fits into narrow measuring points
• Without connector – maximum flexibility for wiring & installation
• Optional cable lengths – freely configurable
• Durable & maintenance-free – for continuous use in industry & laboratory
• 3‑year warranty – guaranteed COMET quality

Technical data GD1250‑1/0:

• Type: Thermocouple K (NiCr‑Ni)
• Measuring range: -65 to +980 °C
• Accuracy: Class 1 according to IEC 584‑2 (±1.5 °C or ±0.004 × t – whichever is higher)
• Insulation: Duplex Nextel ceramic
• Outer diameter: 4 mm
• Connection: without connector (bare ends)
• Cable length: standard or optional
• Application: high temperature, industrial, laboratory, process

Perfectly suited for:

• Industrial furnaces & heat treatment systems
• Burners & exhaust monitoring
• Melting furnaces & crucibles
• Engine & turbine test benches
• Ceramic & glass production
• Laboratory & calibration applications
• Process control & quality assurance
• Replacement probe for existing measuring systems

Installation and operation – done in seconds

Insert or mount the probe into the measuring point, connect the bare ends to terminals/controllers/loggers – that’s it! No on-site calibration required – certificate included. Optionally select cable length for maximum flexibility.

Available versions:

• Cable length 1 meter
• Cable length 2 meters
• Cable length 3 meters
• Cable length 4 meters

Summary:

• -65 to 980 °C
• Double-wall insulated – Nextel ceramic
• 4 mm outer diameter
• Without connector
• Thermocouple tolerance: Class 1 according to IEC 584‑2 ±1.5 °C or ±0.004 × t (the greater value)

Scope of delivery:

• Sensor – depending on selected cable length