Infrared temperature sensor CellaCrystal PX 45

in metal housingIO-LinkRS-485

Product description
The CellaCrystal PX 45 is an optical two-colour pyrometer developed for temperature measurement in high‑temperature furnaces used for crystal growth up to 3200 °C. Based on the quotient measuring method, it provides an exceptionally wide temperature range with a uniform resolution of < 0.1 K over the full range and high metrological accuracy through advanced signal processing. Precise alignment is possible via through‑the‑lens sighting, laser pilot light or an optional video camera.

Special features

• Measuring range: 900 – 3200 °C
• Designed for crystal production at very high process temperatures
• Hybrid signal evaluation for high resolution and stability
• Minimal self‑heating for long‑term stability
• Focusable, replaceable optics to adapt measuring distance
• Narrow field of view for measurement through small furnace openings
• Standard outputs: analog 0(4)-20 mA and IO‑Link (USB/RS‑485 optional)

Technical data (selected)
Measuring principle: two‑colour (quotient method)
Measuring range: 900 - 3200 °C
Spectral range: 0.9 / 1.05 µm
Sensor: double photodiode
Response time t98: ≤ 10 ms
Measurement uncertainty: 900–1500 °C: 0.35% of reading + 2 K; 1500–2400 °C: 0.5% + 2 K; 2400–3200 °C: 1.0%
Repeatability: 2 K
Resolution (overall): < 0.1 K; interface resolution: 0.1 K; display resolution: 1 K

Optical variants
Standard objective PZ 20.01: focus 0.4 m – ∞
Wide‑angle PZ 20.05: focus 0.2 m – ∞
Telephoto PZ 20.06: focus 1.2 m – ∞
Telephoto PA 20.06: focus 0.6 m – ∞
Distance/field examples available (see measuring field table).

Electrical / interfaces
Analog output: 0(4)-20 mA, linear, switchable, scalable (max. load ≤ 500 Ω)
Switching outputs: 2 × open collector 24 V DC, ≤ 150 mA
Interface: IO‑Link (USB/RS‑485 via adapter/software)
Power supply: 24 V DC (+10 % / -20 %); current consumption ≤ 175 mA

Video camera (option)
Video output (camera models): Composite PAL, 1 Vpp, 75 Ω — supports visual alignment and documentation of the measuring point.

Equipment / operator features

• Sighting: through‑the‑lens, laser pilot light, video camera (options)
• Display: 4 × 7‑segment LED (red), digit height 8 mm
• Status display: 4 × LED
• Controls: 3 pushbuttons

General parameters
Connection: M12, 5‑pin screw connector
Ambient temperature (operating): 0 – 65 °C; storage: -20 – +80 °C
Permissible humidity: max. 95 % RH (non‑condensing)
Dimensions: Ø 65 mm × 220 mm (max. length 277 mm)
Housing: stainless steel V2A (1.4305); Protection class: IP65
Weight: ≈ 0.9 kg

Adjustable parameters (selected)
Analog output scaling (0/4–20 mA), smoothing filter, memory mode and holding time, emissivity, transmittance, background radiation and ambient temperature compensation, alarm limit values and modes, ATD parameters, simulation of current/temperature, temperature unit (°C/°F), measuring channel selection (two‑colour, one‑colour 1/2), contamination monitoring threshold. Camera models: TBC, white balance, measuring point number.

Functions
Overtemperature signal (internal > 75 °C), service simulation (measured value / current), ATD (Automatic Temperature Detection) for discontinuous processes.

Scope of delivery (typical)
Pyrometer CellaTemp PX (CellaCrystal PX 45), connection cable VK 02/L AF 1 (5 m), video cable VK 02/F (5 m) for models with built‑in camera (if applicable), short operating manual.

Measuring field (examples)
Measuring distance — Field diameter (examples): 0.00 mm — 7.50 mm; 96.00 mm — 6.16 mm; 160.00 mm — 5.26 mm; 256.00 mm — 3.92 mm; 320.00 mm — 3.02 mm; 400.00 mm — 1.90 mm.

Technical specifications (summary)

• Model: CellaCrystal PX 45
• Measuring range: 900 – 3200 °C
• Spectral bands: 0.9 µm / 1.05 µm (two‑colour)
• Response time t98: ≤ 10 ms
• Outputs: 0(4)-20 mA, IO‑Link, USB/RS‑485 (option)
• Power supply: 24 V DC (+10 % / -20 %)
• Protection class: IP65; housing stainless steel V2A
• Dimensions / Weight: Ø 65 mm × 220 mm (max. 277 mm) / ≈ 0.9 kg