Infrared temperature sensor CellaFurnace PX 46

in metal housing4-20 mAIO-Link

Product overview
The CellaFurnace PX 46 is an infrared pyrometer for non‑contact temperature measurement in vacuum, inert‑gas and high‑temperature furnaces up to 3200 °C. It uses a double photodiode and two‑colour (quotient) measurement with hybrid signal processing to provide 0.1 K resolution across the 900–3200 °C range. Focusable precision optics and a very small spot size allow measurements through narrow sighting ports. Targeting options include through‑the‑lens sighting, laser pilot light or integrated video camera.

Key features

• Measuring range 900–3200 °C
• Designed for vacuum, inert‑gas and high‑temperature furnaces with small sighting windows
• Two‑colour (quotient) principle with hybrid signal evaluation for high metrological resolution
• Double photodiode sensor for accuracy and long‑term stability
• Focusable precision lens for exact alignment and spot size control
• Standard: analog output and IO‑Link interface

Product options / properties
Measuring range: 900 - 3200 °C
Focus distance options (by AF version): 0.4 m - ∞; 0.2 - 0.4 m; 0.6 m - ∞; 1.2 m - ∞
Sighting options: through‑the‑lens sighting; laser pilot light; video camera
Available versions: CellaFurnace PX 46 AF 1, AF 2, AF 3, AF 5 (each version may include sighting‑option tags)

Technical data
Measurement parameters
Measuring range: 900 - 3200 °C
Sensor: double photodiode
Spectral range: 0.9 / 1.05 µm
Response time t98: ≤ 10 ms
Measurement uncertainty:
900 - 1500 °C: 0.35% of reading [°C] + 2 K
1500 - 2400 °C: 0.5% of reading [°C] + 2 K
2400 - 3200 °C: 1.0% of reading [°C]
Repeatability: 2 K
Temperature coefficient: 0.05 %/K
Resolution current output: 0.2 K + 0.03 % of selected range
Resolution interface: 0.1 K
Resolution display: 1 K

Optical variants
Standard objective lens PZ 20.01: focusing 0.4 m - ∞ (other objectives: PZ 20.03, PZ 20.06, PX 20.06 depending on AF version)
Distance ratios (by AF version): AF 1 = 210:1, AF 2 = 140:1, AF 3 = 310:1, AF 5 = 430:1
Measuring field shape: round

Electrical parameters
Analog output: 0(4)-20 mA linear, switchable, scalable
Resistance/load: ≤ 500 Ω
Switching output: 2 x Open Collector 24 V DC, ≤ 150 mA
Interface: IO‑Link
Power supply: 24 V DC +10 % / -20 %
Current consumption: ≤ 175 mA (24 V DC)

Camera
Video output (model with camera): Composite PAL, 1 Vpp, 75 Ω

Features
Available sighting options: through‑the‑lens sighting; laser pilot light; camera
Display: 4‑digit red LED (digit height 8 mm)
Status display: 4 x LED
Control elements: 3 buttons

General parameters
Connection: M12 thread, 5‑pin
Ambient temperature (operating): 0 - 65 °C
Storage temperature: -20 - +80 °C
Permissible humidity: 95 % r.H. max. (non‑condensing)
Dimension: Ø 65 mm x 220 mm (max. 277 mm)
Housing: Stainless steel V2A (1.4305)
Protection class: IP 65 (DIN 40050)
Weight: approx. 0.9 kg

Adjustable parameters
Analog output scaling (0/4 - 20 mA), smoothing filter, memory mode and hold time, emissivity, transmittance, reflected ambient radiation compensation, ambient temperature compensation, alarm contact limits and modes, ATD parameters, simulation of current and temperature, temperature unit °C/°F, measurement channel selection (two‑colour, single‑colour 1, single‑colour 2), contamination monitoring threshold. Camera models: additional TBC, white balance, measuring point number.

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

Scope of delivery (typical)
Pyrometer CellaFurnace PX 46, connection cable VK 02/L AF 1 (5 m). For camera models: video cable VK 02/F (5 m). Short manual included.

Software
SW 50 (IO‑Link configuration software).

Measuring field (example values for AF 1, focus distance 400 mm)
Measuring distance — Measuring field diameter (examples):
0.00 mm — 7.50 mm
16.00 mm — 7.28 mm
32.00 mm — 7.05 mm
48.00 mm — 6.83 mm
64.00 mm — 6.60 mm
80.00 mm — 6.38 mm
… (further example values available in datasheet)

Technical specifications / characteristics

• Model: CellaFurnace PX 46
• Measuring range: 900 - 3200 °C
• Measuring principle: two‑colour (quotient) with single‑colour modes available
• Spectral range: 0.9 / 1.05 µm
• Detector: double photodiode
• Response time t98: ≤ 10 ms
• Measurement uncertainty: see measurement ranges
• Repeatability: 2 K
• Analog output: 0(4)-20 mA (configurable)
• Interface: IO‑Link
• Power supply: 24 V DC (+10 % / -20 %)
• Protection class: IP65
• Housing: stainless steel V2A
• Spot sizes / distance ratios: AF variants with distance ratios from 140:1 to 430:1
• Sighting: through‑the‑lens, laser pilot, or integrated video camera