Digital pyrometer CellaTemp® PA 29

°Canalog outputIP65

Product overview
The CellaTemp® PA 29 is an industrial infrared pyrometer with a special blocking filter and photodiode sensor designed to minimise influence from daylight, laser radiation and reflected hot-object radiation. With multiple optical variants and broad measuring ranges, it is particularly suited to temperature measurement on aluminium and other low-emissivity metals at low to very high temperatures.

Key features

• Measuring ranges (examples): 150–800 °C; 180–1200 °C; 250–2000 °C; 350–2500 °C
• Focusable lens for precise adjustment of measuring distance
• Broadband anti-reflective precision optics
• Optimised for metallic surfaces and low emissivity materials
• Large, remote-readable LED display
• Test current output for diagnostics
• Standard interfaces: digital I/O, two analogue outputs (0/4–20 mA), USB and RS‑485

Available versions / options
CellaTemp PA 29 AF 10; CellaTemp PA 29 AF 1; CellaTemp PA 29 AF 2; CellaTemp PA 29 AF 3; CellaTemp PA 29 AF 4; CellaTemp PA 29 AF 5; CellaTemp PA 29 AF 6; CellaTemp PA 29 AF 21; CellaTemp PA 29 AF 22; CellaTemp PA 29 AF 23

Technical data

• Sensor: photodiode · Spectral range: 1.8–2.2 µm
• Measuring ranges (examples): 150–800 °C; 180–1200 °C; 250–2000 °C; 350–2500 °C
• Response time t98: down to ≤ 2 ms depending on range (examples in product documentation)
• Measurement uncertainty: 0.75 % of reading (150–1200 °C ranges) or 0.5 % of reading (250–2500 °C ranges); minimum offsets apply
• Repeatability: 1 K · Temperature coefficient: 0.25 K/K (T < 500 °C) / 0.05 %/K (T > 500 °C)
• Resolution: display and interface resolutions down to 0.1 K depending on range

Optical variants (lenses)

• 150–800 °C: Objective F50 PZ 20.08 focusing 0.3 m–∞
• 180–1200 °C: Standard lens PZ 20.01 (0.4 m–∞); Close-up PZ 20.03 (0.2–0.4 m); Telephoto PZ 20.06 (1.2 m–∞)
• 250–2000 °C and 350–2500 °C: Standard PZ 20.01; Close-up PZ 20.03; Wide-angle PZ 20.05; Telephoto PZ 20.06

Electrical parameters

• Analogue outputs: 0(4)–20 mA (linear, switchable, scalable); max. load ≤ 500 Ω
• Analogue input: 0–10 V
• Switching outputs: 2 × open collector 24 V DC, ≤ 30 mA
• Switching inputs: 2 × up to 24 V
• Interfaces: USB, RS‑485 · Power supply: 24 V DC (+10 % / −20 %)

Camera / sighting options

• Video output (for camera model): composite PAL
• Sighting: through-the-lens sighting, laser pilot light, video camera

Display, control & measuring principle

• Display: 4‑digit red LED (8 mm digits) · Status: 2 × LED · Controls: 3 buttons
• Measuring principle: single-colour infrared

Mechanical & environmental

• Housing: stainless steel V2A (1.4305) · Protection class: IP65
• Dimensions: Ø 65 mm × 220 mm (max. 277 mm) · Weight: approx. 0.9 kg
• Ambient temp.: 0–65 °C · Storage temp.: −20–+80 °C · Permissible humidity: ≤ 95 % r.H. (non‑condensing)

Adjustable parameters (selection)

• Measuring range and measured variable scaling
• Smoothing filter; memory and hold time; emissivity; transmittance
• Compensation of reflected ambient radiation; alarm limits and modes
• ATD function parameters (optional); linearization; LED status behaviour; simulation modes; °C/°F

Functions (selection)

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

Scope of delivery

• Pyrometer CellaTemp PA
• Connection cable VK 02/A (5 m)
• Video cable VK 02/F (5 m) for models with camera
• USB cable VK 11/D (1.8 m)
• Software CellaView · Short manual

Technical specifications summary

• Model: CellaTemp® PA 29 · Measuring principle: single-colour infrared pyrometer
• Spectral range: 1.8–2.2 µm · Sensor: photodiode
• Measuring ranges: 150–800 °C; 180–1200 °C; 250–2000 °C; 350–2500 °C
• Response time: down to ≤ 2 ms depending on range · Typical accuracy examples: 0.75 % or 0.5 % of reading
• Outputs: 0(4)–20 mA (2 outputs) · Interfaces: USB, RS‑485 · Power: 24 V DC
• Housing: stainless steel, IP65 · Optional sighting: through-the-lens, laser, video camera