Pyrometer with LED display CellaFurnace PA 46

°C°Fwith laser pointer

Product overview
The CellaFurnace PA 46 is a two-colour (quotient) pyrometer designed for optical temperature measurement in vacuum and inert-gas high-temperature furnaces up to 3200 °C. It delivers a very wide measuring range with a consistent resolution better than 0.1 K and high long-term stability required for production processes. Alignment to the measuring point is possible via through-the-lens sighting, laser pilot light or an optional video camera.

Key features

• Measuring range 900 to 3200 °C
• Designed for high-temperature furnaces (vacuum / inert gas)
• Two-colour (quotient) measurement principle for reduced emissivity influence
• Hybrid signal evaluation for high metrological resolution
• Minimal self-heating for excellent long-term stability
• Focusable optics and narrow field of view for measurements through small openings
• Standard: analogue output and USB / RS‑485 interface

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 + 2 K; 1500–2400 °C: 0.5% of reading + 2 K; 2400–3200 °C: 1.0% of reading
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 / Lenses

• Standard PZ 20.01: focusing 0.4 m - ∞
• Close-up PZ 20.03: focusing 0.2 m - 0.4 m
• Telephoto I PZ 20.06: focusing 1.2 m - ∞
• Telephoto II PA 20.06: focusing 0.6 m - ∞

Electrical parameters
Analog output: 0(4) - 20 mA linear, switchable, scalable
Load resistance: ≤ 500 Ω
Analog input: 0 - 10 V
Switching output: 2 × open collector 24 V DC, ≤ 30 mA
Switching input: 2 × up to 24 V
Interfaces: USB, RS‑485
Power supply: 24 V DC (+10 % / -20 %)
Current consumption: ≤ 175 mA at 24 V DC

Camera / Sighting options
Video output (with camera): Composite PAL, 1 Vpp, 75 Ω
Sighting options: through-the-lens sighting; laser pilot light; video camera (model dependent)

Display / Controls
Display: 4‑digit red LED, digit height 8 mm
Status indicators: 2 × LED
Control elements: 3 buttons

General parameters
Connection: M12 8‑pin threaded connector
Ambient temperature: 0 - 65 °C
Storage temperature: -20 - +80 °C
Permissible humidity: ≤ 95 % r.H. (non‑condensing)
Dimensions: Ø 65 mm × 220 mm (max. 277 mm)
Housing: Stainless steel V2A (1.4305)
Protection class: IP65 (DIN 40050)
Weight: approx. 0.9 kg

Adjustable parameters

• Measuring range and measured variable
• Scaling of analogue inputs/outputs
• Smoothing filter and memory operation mode
• Emissivity and transmittance
• Compensation of reflected ambient radiation and ambient temperature
• Alarm limits and operating mode
• ATD parameters (optional) and linearization
• LED status display and simulation functions
• Temperature unit °C/°F; measurement channel selection (two‑colour, single‑colour)
• Contamination monitoring threshold; camera functions (if equipped)

Functions

• Overtemperature signal: analog output > 20.5 mA if internal temperature > 80 °C
• Service function: simulation of measured value or current signal
• ATD (Automatic Temperature Detection) for discontinuous processes

Scope of delivery

• Pyrometer unit (CellaFurnace PA)
• Connection cable VK 02/A (5 m)
• Video cable VK 02/F (5 m) for camera versions
• USB cable VK 11/D (1.8 m)
• Software CellaView and short manual

Software
CellaView

Measuring field (example)
Measuring distance 0.00 mm : field diameter 7.50 mm
Measuring distance 16.00 mm : field diameter 7.28 mm
Measuring distance 32.00 mm : field diameter 7.05 mm
... up to 400.00 mm : field diameter 1.90 mm