Pyrometer with LED display CellaTemp® PK 21

°C°FIO-Link

Product overview:
The CellaTemp® PK 21 BF 1 is a fast, non-contact pyrometer for industrial temperature measurement from a safe distance in the range 250 to 1,600 °C. The device integrates a vitality indicator (SMART) that continuously records operational data and signals recommended times for service checks and calibration based on operating conditions.

Special features:

• Measuring range 250 to 1,600 °C
• Universally configurable switching output
• High optical resolution with precision lenses
• IO-Link interface (V1.1.3)
• All parameters adjustable via sensor pushbuttons or plant interface
• 2 × switching outputs; PNP open collector
• Simple mounting via M30 central thread
• Large, high-contrast 4-digit LED display

Version / Properties:
Model: CellaTemp® PK 21 BF 1
Measuring range: 250 - 1600 °C
Target size: Ø 10 mm at 1.5 m
Focus distance: 1.5 m
Measuring field shape: round
Measuring principle: single-colour pyrometer

Technical data — Measurement parameters:

• Sensor: photodiode
• Spectral range: 1.0 - 1.7 µm
• Response time t90: ≤ 2 ms (T > 600 °C)
• Measurement uncertainty: 0.3 % of reading + 2.5 K
• Repeatability: 1 K
• Temperature coefficient: 0.07 %/K
• Resolution current output: 0.1 K + 0.005 % of selected span
• Resolution interface: 0.1 K
• Resolution display: 1 K

Technical data — Electrical parameters:

• Analog output: 0(4)–20 mA, linear, switchable, scalable
• Load resistance: ≤ 500 Ω
• Switching outputs: 2 × PNP open collector, 24 V DC, max. 150 mA each
• Test input: 10–34 V DC (acc. to IEC 61131-2)
• Interface: IO-Link V1.1.3
• Power supply: 18–32 V DC
• Current consumption: ≤ 50 mA at 24 V DC

Technical data — Features:

• Display: 4-digit red LED, digit height 8 mm
• Status indication: 3 × LED
• Control elements: 3 buttons

Technical data — General parameters:

• Connection: M12, 5-pin (A-coding)
• Ambient temperature: 0 - 65 °C
• Storage temperature: -20 - +80 °C
• Permissible humidity: ≤ 95 % r.H. (non-condensing)
• Dimensions: Ø 30 × 210 mm (without plug)
• Housing: Stainless steel V2A (1.4305)
• Protection class: IP65 (DIN 40050)
• Weight: approx. 0.4 kg

Adjustable parameters:

• Analog output scaling 0/4–20 mA
• Emissivity quick adjustment
• Protective glass transmission compensation
• Damping time constant
• Max-value memory hold time
• Operating mode, source and switching points, on/off delays
• Temperature correction via interpolation points (X/Y)
• Vitality indicator and service parameters
• Reset to factory settings, key lock
• Display options: temperature or "run"; units °C/°F; temperature simulation

Functions:

• Overtemperature signal at internal temperature > 75 °C
• Service function: simulated measured value for testing
• Diagnostic indications for reverse polarity, overload and incorrect supply
• Reverse polarity protection for power, analog and switching outputs

Scope of delivery:

• Infrared thermometer CellaTemp® PK
• Short manual
• 2 fixing nuts

Software:
SW 50

Measuring field examples:

• Measuring distance 1.5 m → target Ø 10.00 mm
• Measuring distance 0.00 m → target Ø 11.50 mm
• Measuring distance 1,500.00 mm → target Ø 10.00 mm

Technical specifications (summary):

• Model: CellaTemp® PK 21 BF 1
• Measuring range: 250–1600 °C
• Spectral range: 1.0–1.7 µm
• Response time t90: ≤ 2 ms (T > 600 °C)
• Accuracy: 0.3 % of reading + 2.5 K
• Outputs: 0(4)–20 mA; 2 × PNP open collector
• Interface: IO-Link V1.1.3
• Power supply: 18–32 V DC
• Protection class: IP65
• Housing: Stainless steel V2A
• Dimensions: Ø 30 × 210 mm (without plug)
• Weight: approx. 0.4 kg