Infrared temperature sensor CellaCrystal PA 45

in metal housing4-20 mAcurrent output

Product overview
The CellaCrystal PA 45 is designed for optical temperature measurement in high-temperature furnaces for crystal growth and high-temperature processes up to 3200 °C. Based on the two-colour (quotient) measurement principle, it provides a very wide measuring range with a constant high resolution of < 0.1 K across the range. Special signal processing yields high measurement accuracy and long-term stability. Alignment to the measuring spot is possible via through-the-lens sighting or an integrated/external video camera.

Special features

• Measuring range 900 to 3200 °C
• Suitable for graphite, graphene and crystal production at very high process temperatures
• Hybrid signal evaluation for high metrological resolution
• High long-term stability due to minimal self-heating
• Focusable optics for precise adjustment of measuring distance
• Narrow field of view for measurement through small furnace openings
• Standard interfaces: analogue output, USB and RS 485

Measuring parameters
Measuring range: 900 - 3200 °C
Measuring principle: two-colour (quotient measurement)
Sensor: double photodiode
Spectral range: 0.9 / 1.05 µm
Response time t98: ≤ 10 ms
Measurement uncertainty: 900–1500 °C: 0.35% of measured value + 2 K; 1500–2400 °C: 0.5% of measured value + 2 K; 2400–3200 °C: 1.0% of measured value
Repeatability: 2 K
Temperature coefficient: 0.05 %/K
Resolution (interface): 0.1 K; display resolution: 1 K; resolution current output: 0.2 K + 0.03% of selected range

Optical variants (lenses)

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

Electrical parameters
Analog output: 0(4)–20 mA, linear, switchable, scalable (resistance ≤ 500 Ω)
Analog 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%)
Current consumption: ≤ 175 mA at 24 V DC

Camera / Sighting
Sighting options: through-the-lens sighting, laser pilot light, video camera (models with built-in camera provide composite PAL video output 1 Vpp, 75 Ω)

Features & Display
Display: 4-digit red LED, digit height 8 mm
Status display: 2 × LED
Control elements: 3 buttons
Protection class: IP65
Housing: stainless steel V2A (1.4305)
Dimensions: Ø 65 mm × 220 mm (max. 277 mm)
Weight: approx. 0.9 kg
Connection: M12 8-pin
Ambient temperature: 0 – 65 °C; storage: -20 – +80 °C; permissible humidity: up to 95% r.h. (non-condensing)

Measuring field examples (distance → field diameter)
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
96.00 mm → 6.16 mm
112.00 mm → 5.93 mm
128.00 mm → 5.71 mm
144.00 mm → 5.49 mm
160.00 mm → 5.26 mm
176.00 mm → 5.04 mm
192.00 mm → 4.81 mm
208.00 mm → 4.59 mm
224.00 mm → 4.37 mm
240.00 mm → 4.14 mm
256.00 mm → 3.92 mm
272.00 mm → 3.70 mm
288.00 mm → 3.47 mm
304.00 mm → 3.25 mm
320.00 mm → 3.02 mm
336.00 mm → 2.80 mm
352.00 mm → 2.58 mm
368.00 mm → 2.35 mm
384.00 mm → 2.13 mm
400.00 mm → 1.90 mm

Scope of delivery

• Pyrometer CellaCombustion PA (device)
• Connection cable VK 02/A (5 m)
• Video cable VK 02/F (5 m) for models with built-in camera
• USB cable VK 11/D (1.8 m)
• Software: CellaView
• Short manual

Software
CellaView configuration and evaluation software included

Technical specifications

• Product name: Pyrometer CellaCrystal PA 45
• Measuring principle: two-colour (quotient measurement)
• Measuring range: 900–3200 °C
• Spectral range: 0.9 / 1.05 µm
• Response time: ≤ 10 ms
• Resolution (interface): 0.1 K; display: 1 K
• Analog output: 0(4)–20 mA, scalable
• Interfaces: USB, RS 485
• Power supply: 24 V DC (+10% / -20%)
• Protection class: IP65; housing: stainless steel V2A (1.4305)
• Dimensions: Ø 65 mm × 220 mm (max. 277 mm); weight: ≈ 0.9 kg
• Sighting options: through-the-lens, laser pilot light, video camera
• Available lenses: PZ 20.01 (0.4 m–∞), PZ 20.03 (0.2–0.4 m), PZ 20.06 (1.2 m–∞), PA 20.06 (0.6 m–∞)