Fiber optic pyrometer CellaTemp® PX 41

with LED display°Canalog output

Product overview
The CellaTemp® PX 41 is a digital two‑colour pyrometer with fibre‑optic connection for non‑contact temperature measurement from 700 to 3000 °C. The system uses a separate optical measuring head connected via fibre optic cable, allowing the electronics to remain outside harsh or confined environments. Fibre and measuring head tolerate ambient temperatures up to 250 °C without active cooling and are immune to electromagnetic interference, making the device suitable for industrial high‑temperature applications.

Key features

• Measuring range: 700–3000 °C (selectable segments)
• IO‑Link interface for configuration and diagnostics
• Exchangeable focusable lenses for precise distance adjustment
• Broadband anti‑reflective precision optics
• Clear LED display readable at long distance
• Configurable outputs: 1 analogue and 2 switching outputs
• ATD (automatic temperature detection) and contamination monitoring
• Measuring head and fibre heat resistant up to 250 °C

Options and variants

• Available optical versions: AF 11, AF 21, AF 22, AF 111, AF 121, AF 122, AF 211, AF 221, AF 222 — each version offers specific measuring ranges and focus distances
• Focus distance examples: PZ 41.18 (M16) 0.033–0.045 m; PA 41.01 (M30) 0.2 m–∞; PA 41.05 (M16) 0.12 m–∞
• Sighting: optional laser pilot light
• Fibre optic cable and measuring head ordered separately

Technical data — measurement parameters

• Measuring principle: two‑colour
• Spectral range: 0.95 / 1.05 µm
• Response time (t98): ≤ 20 ms (depending on range and settings)
• Measurement uncertainty: 1.5 % of reading
• Repeatability: 3 K
• Resolution: display 1 K; interface 0.1 K; analogue output 0.2 K + 0.03 % of range

Optical and mechanical

• Interchangeable focusable lenses for exact adjustment of measuring distance
• Broadband anti‑reflective precision lenses to reduce reflections
• Housing: stainless steel V2A (1.4305), measuring head dimensions depend on variant
• Protection class: IP65

Electrical and interfaces

• Analogue output: 0(4)–20 mA, linear, switchable and scalable
• Switching outputs: 2 × open collector 24 V DC, ≤ 150 mA
• Interface: IO‑Link
• Power supply: 24 V DC (+10 % / −20 %), current ≤ 175 mA
• Connection: M12 5‑pin

Adjustable parameters & functions

• Emissivity, transmittance, analogue scaling, smoothing filter
• Alarm limits and modes, ATD parameters, contamination threshold
• Measurement channel selection: two‑colour, single‑colour 1, single‑colour 2
• Diagnostic functions: test current output, overtemperature signal, simulation modes

General parameters & operating conditions

• Electronics ambient temperature: 0–65 °C
• Measuring head ambient temperature: up to 250 °C without cooling
• Storage temperature: −20–+80 °C
• Permissible humidity: max. 95 % r.H. (non‑condensing)
• Weight: approx. 0.9 kg

Scope of delivery
Pyrometer CellaTemp PX (electronic unit), connection cable VK 02/L AF 1 (5 m), measuring head, short manual. Note: fibre optic cable must be ordered separately.

Software
SW 50 (IO‑Link configuration software) for device setup and parameter management.