LED pyrometer CellaTemp® PX 21

°CK180:1

Product overview:
The CellaTemp PX 21 is a digital fibre-optic pyrometer for non-contact temperature measurement from 250 to 2000 °C. It features a separate optical measuring head connected by a fibre-optic cable, making the sensor immune to electromagnetic interference and allowing use of the electronics in ambient temperatures up to 250 °C without additional cooling. The separate measuring head variant is particularly suited for confined or hard-to-reach installation locations.

Special features:

• Measuring range: 250–2000 °C
• Modern IO-Link interface
• Focusable, interchangeable lenses for exact adjustment of measuring distance
• Broadband anti-reflective precision optics
• High-contrast LED display readable from a distance
• All parameters adjustable via front keyboard
• Test current output for diagnostic checks
• 1 analogue output and 2 switching outputs
• Source freely configurable; ATD for automatic temperature detection
• Measuring head and fibre cable heat resistant up to 250 °C

Versions / Optical variants:
Available versions: CellaTemp PX 21 AF 11, AF 21, AF 22.
Measuring range (all versions): 250–2000 °C.
Focus distances: AF 11: 0.2 m – ∞; AF 21: 0.12 m – ∞; AF 22: 0.033–0.045 m.
Distance ratio (D:S): AF 11: 180:1; AF 21: 100:1; AF 22: 50:1.
Measuring heads: AF 11 → PA 41.01 (M30); AF 21 → PA 41.05 (M16); AF 22 → PZ 41.18 (M16).

Measurement parameters:

• Sensor: photodiode
• Spectral range: 1.1–1.7 µm
• Response time t98: ≤ 50 ms (T > 300 °C); ≤ 2 ms (T > 800 °C)
• Measurement uncertainty: 0.75 % of reading, minimum 4 K
• Repeatability: 2 K
• Temperature coefficient: 0.25 K/K (T < 500 °C); 0.05 %/K (T > 500 °C)
• Resolution current output: 0.2 K + 0.03 % of selected range
• Resolution interface: 0.1 K; display resolution: 1 K

Electrical parameters:

• Analogue output: 0(4)–20 mA, linear, switchable, scalable
• Load resistance: ≤ 500 Ω
• Switching outputs: 2 × open collector 24 V DC, ≤ 150 mA
• Interface: IO-Link
• Power supply: 24 V DC (+10 % / -20 %); current consumption ≤ 175 mA

Features (sighting / display / controls):

• Sighting: laser pilot light
• Display: 4-digit red LED (digit height 8 mm)
• Status display: 4 × LED
• Control: 3 front buttons; all parameters adjustable

General parameters:

• Connection: M12, 5-pin
• Ambient temperature: electronics 0–65 °C; measuring head heat resistant up to 250 °C
• Storage temperature: -20 to +80 °C
• Humidity: max. 95 % r.H. (non-condensing)
• Dimensions (electronics): Ø 65 mm × 187 mm; housing stainless steel V2A (1.4305)
• Protection class: IP65 (DIN 40050)
• Weight: approx. 0.9 kg

Adjustable parameters:

• Analog output scaling (0/4–20 mA), smoothing filter
• Memory operation mode and hold time
• Emissivity and transmittance
• Alarm contact limits and mode
• ATD function parameters; simulation of current/temperature; °C/°F

Functions:

• Overtemperature signal (internal temp > 75 °C)
• Service function: simulation of measured value or current signal

Scope of delivery:

• Pyrometer CellaTemp PX 21 (electronic unit)
• Connection cable VK 02/L AF 1 (5 m)
• Measuring head (version-dependent)
• Short manual
• * Fibre optic cable must be ordered separately

Software:
SW 50 (configuration and data readout)

Versions / Measuring field (example AF 22 at 200 mm):
Measuring distance 0.00 mm → measuring field Ø 21.50 mm; 8.00 mm → Ø 20.68 mm; 16.00 mm → Ø 19.87 mm; … up to 200.00 mm → Ø 1.11 mm (see technical chart).

Technical specifications (summary):

• Model: CellaTemp PX 21 (AF 11 / AF 21 / AF 22)
• Measuring range: 250–2000 °C; spectral range 1.1–1.7 µm
• Response time: ≤ 50 ms (T > 300 °C); ≤ 2 ms (T > 800 °C)
• Measurement uncertainty: 0.75 % of reading (min. 4 K); repeatability 2 K
• Analogue output: 0(4)–20 mA; switching outputs: 2 × OC 24 V DC
• Interface: IO-Link; power: 24 V DC (+10 % / -20 %)
• Housing: stainless steel V2A; protection class IP65; display: 4-digit red LED
• Measuring heads: PA 41.01, PA 41.05, PZ 41.18
• Scope of delivery: pyrometer, connection cable (5 m), measuring head, short manual
• Item No.: 1097777