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COMET Pt1000TG3/0 Ultra-Thin Probe 3 mm -50 to +200 °C

COMET SN252 Pt1000TG3/0 Ultra-thin Probe 3 mm –50 to +200 °C

The COMET SN252 (Pt1000TG3/0) is an ultra-thin, high-speed temperature probe with a diameter of only 3 mm – ideal wherever extremely fast and precise measurements are required with minimal disturbance to the measured medium. Thanks to its stainless-steel housing (DIN 1.4301) with a diameter of just 3 mm and high-quality Teflon cable, it reacts lightning fast: t0.5 ≤ 3 seconds, t0.9 ≤ 9 seconds – few probes are faster!

The measuring range from –50 to +200 °C combined with full IP67 sealing makes it perfect for narrow gaps, thin tubes, medical devices, laboratory applications, food processing, climate chambers, 3D printer heat beds, electronics testing, and wherever a standard 6 mm probe would be too large or too slow.

The shielded white Teflon cable is highly flexible, extremely chemical resistant, and withstands continuous exposure to +200 °C – ideal even in aggressive or sterile environments. The probe is supplied without a connector and can be directly connected to all COMET transmitters with Pt1000 input (T4411, T3419, P8510 etc.), data loggers, or any PLC.

With a Pt1000 Class A accuracy (±0.15 + 0.002 × |t|) °C, the SN252 ranks among the absolute top in precision – all within a minimal design.

Why the COMET SN252 is the fastest and thinnest professional probe:

  • Only 3 mm diameter – fits into the narrowest gaps and thinnest tubes
  • Lightning-fast response – t0.5 ≤ 3 s, t0.9 ≤ 9 s
  • Measuring range –50 to +200 °C – suitable even for high-temperature use
  • Pt1000 Class A – highest accuracy
  • Shielded Teflon cable – chemically resistant, highly flexible, withstands +200 °C continuously
  • Completely IP67 sealed – submersible and sterilizable
  • Stainless steel DIN 1.4301 – food-grade and corrosion-resistant
  • Without connector – freely configurable
  • Perfect for medical, laboratory, food, and electronics applications
  • 30‑month warranty

Technical data:

  • Measuring range: –50 to +200 °C
  • Accuracy: ±(0.15 + 0.002 × |t|) °C – Class A
  • Sensor element: Pt1000 / 3850 ppm/°C
  • Connection: 2‑wire, without connector
  • Response time: t0.5 ≤ 3 s / t0.9 ≤ 9 s
  • Housing material: Stainless steel DIN 1.4301
  • Dimensions: Length 40 mm, diameter 3 mm
  • Cable: Length according to selection, shielded, white
  • Protection class: IP67
  • Warranty: 30 months

Typical applications:

  • Medical devices and sterilization
  • Food core temperature in thin products
  • 3D printer heat beds and nozzle temperature
  • Laboratory and analytical equipment
  • Thin‑walled tubes and capillaries
  • Climate chambers and test cabinets
  • Electronics and semiconductor testing
  • Pharmaceutical and cleanroom technology

Installation:

Simply immerse, insert into gaps, or secure with tape or a cable tie. With only 3 mm diameter, the probe causes minimal disturbance to the medium.

Available versions:

  • Cable length 1 meter
  • Cable length 2 meters
  • Cable length 5 meters
  • Cable length 10 meters

Summary:

  • The probes are designed for contact‑based temperature measurement of gases, liquids, and solids.
  • The ultra‑thin housing with only 3 mm diameter ensures a fast response to temperature changes.
  • The connecting cable is Teflon‑insulated and shielded.
  • The sensors are universally applicable.
  • The method of use must consider the temperature and chemical resistance of both housing and cable.
  • The sensors are also suitable for use in chemically non‑aggressive environments.

Scope of delivery:

  • Sensor with selected cable length (as specified above)
Datasheets
Datasheet 1

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Datasheet 1 (255.63 KB)
Datasheet 2

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Datasheet 2 (120.55 KB)

Ultra-Thin Temperature Sensor Pt1000TG3/0, without connector

Sensor data

  • Sensor type: Pt1000 / 3850 ppm / °C
  • Accuracy class:
    • Class A: ±(0.15 + 0.002·|t|) °C
    • Class B: ±(0.3 + 0.005·|t|) °C
  • Measuring range: −50 to +200 °C
  • Power supply: SELV or PELV
  • Max. / recommended measuring current:
    • Class A: 0.4 mA / 0.15 mA
    • Class B: 0.6 mA / 0.2 mA
  • IP protection: IP67 according to EN 60529
  • Response time: τ0.5 < 3 s (in flowing water > 0.2 m/s)

Housing & material

  • Material: Stainless steel DIN 1.4301
  • Diameter: 3 ± 0.1 mm
  • Length: 24 mm
  • Impulse withstand voltage: 500 VAC according to EN 60730‑1
  • Insulation resistance: > 200 MΩ at 500 VDC, 25 ± 3 °C
  • Max. external pressure resistance: 2.5 MPa

Cable

  • Type:
    • 2‑wire: Shielded Teflon cable 2 × AWG 26
    • 3‑ and 4‑wire: Shielded Teflon cable 4 × AWG 30
  • Cable resistance (2‑wire): 0.254 Ω / 1 m at 25 °C

Weight

  • 0.02 kg / 1 m

Effect of cable resistance (2‑wire)

  • Additional error at 25 °C: 0.066 °C / 1 m

Operating conditions

  • Cable temperature range: −50 to +200 °C
  • Relative humidity: 10 to 100 %
  • Atmospheric pressure: 70 to 106 kPa

Manufacturer Information:

COMET SYSTEM, s.r.o.

Bezručova 2901

756 61 Rožnov pod Radhoštěm
Czech Republic

Phone: +420 571 653 990

Email: info@cometsystem.com

Responsible person:

Didactum® Security GmbH

Marsweg 17

48163 Münster
Deutschland

Fon: (+49) 250 19 71 63 54 / (+49) 171 33 11 577

Email: info@didactum-security.de

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