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Pyrometer CellaTemp PK 31

The CellaTemp® PK 31 is a pyrometer for fast, non-contact and wear-free temperature measurement from a safe distance in the temperature range between 500 and 2,500 °C. The new generation of the CellaT

Pyrometer CellaTemp PK 31

Article description

The CellaTemp® PK 31 is a pyrometer for fast, non-contact and wear-free temperature measurement from a safe distance in the temperature range between 500 and 2,500 °C. The new generation of the CellaTemp® PK pyrometer series is equipped with a smart function, the vitality indicator.
This is a self-monitoring, analysis and reporting technology (SMART), i.e. a function for self-monitoring, analysis and status reporting. The vitality monitor continuously records all relevant operating data. As part of preventive maintenance, this enables the pyrometer to autonomously signal the optimum time for a service check and calibration, depending on the operating conditions.

Special features:
  • Measuring range 500 to 2,500 °C
  • switching output universally configurable
  • high optical resolution due to precision lenses
  • IO-Link interface
  • all parameters can be set via pushbutton on the sensor or via interface from the plant control system
  • 2 x switching outputs PNP open collector
  • very simple mounting via M30 central thread
  • large and bright LED display
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Improved & Smart CellaTemp PK pyrometers

Pyrometer CellaTemp PK 31
Properties
Version
Measuring range
500 - 2500 °C
Focus distance
1,5 m
Your selection will affect other settings
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Version CellaTemp PK 31 BF 1 
Measuring range 500 - 2500 °C 
Target size 8 mm 
Focus distance 1,5 m 
Shape of the measuring field round 
Measuring principle one-colour 

Technical Data Downloads Measuring field calculator Accessories Emissivity calculator Application request IO-Link IODD IO-Link Manufacturer explanation

Pyrometer CellaTemp PK 31

Technical Data

Measurement parameters

Measuring range 500 - 2500 °C
Sensor Photo diode
Spectral range 0.78 - 1.06 µm
Response time t90 ≤ 2 ms (T > 900 °C)
Measurement uncertainty 0.2 % of temp. reading [°C] plus 2.5 K
Repeatability 1 K
Temperature coefficient 0.07 %/K
Resolution current output 0.1 K + 0.005 % of selected measuring span
Resolution interface 0.1 K
Resolution display 1 K

Electrical parameters

Analog output 0(4) - 20 mA linear, switchable, scalable
Resistance ≤ 500 Ω
Switching output 2 x PNP Open Collector 24 V DC, 2 x 150 mA max.
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

Features

Display 4-digit LED display red, digit-height 8 mm
Status display 3 x LED
Control elements 3 buttons

General parameters

Connection M12 thread 5-pin connection (A-coding)
Ambient temperature 0 - 65 °C
Storage temperature -20 - +80 °C
Permissible humidity 95 % r.H. max. (non-condensing)
Dimension Ø 30 x 210 mm (without plug)
Housing Stainless steel V2A (1.4305)
Protection class IP 65 acc. to DIN 40050
Weight approx. 0.4 kg

Adjustable parameters

Parameters Analog output 0/4 - 20 mA
Scaling of the analogue output
Emissivity via quick adjustment
Transmission of the protective glass
Damping time constant
Hold time of the maximum value memory
Operating mode, source and switching point, switch-on and switch-off delay of the switching contacts
Temperature correction for process-specific influences using interpolation points (X/Y pairs)
Vitality indicator
Service parameters
Reset to factory setting
Key lock
Anzeige der Temperatur oder "run" im Display
Temperature unit °C/°F
Simulation of temperature

Functions

Overtemperature signal Signal display at an internal temperature > 75 °C
Service function Simulation of a measured value
Diagnostic function Indicates in case of reverse polarity, overload and wrong supply voltage
Reverse polarity protection for power supply, analogue output and switching output

Scope of delivery

Scope of delivery Infrared thermometer CellaTemp PK
Manual (short)
2 fixing nuts

Software

Software SW 50

Pyrometer CellaTemp PK 31

Emissivity calculator

The correct emissivity to be set on the pyrometer is calculated from the measured value displayed on the pyrometer, the true object temperature, the emissivity preset on the pyrometer and the ambient temperature (necessary for some types).
From the true object temperature, the emissivity of the measurement object, the emissivity set on the pyrometer and the ambient temperature (required for types), the measured value calculated by the pyrometer is displayed.
Pyrometer
Quotient
  • Two-colour mode
  • One-colour 1
  • One-colour 2
Preset emissivity
Emissivity ratio to be set
Ambient temperature
Object temperature
Measured value of the pyrometer
Pyrometer
Quotient
  • Two-colour mode
  • One-colour 1
  • One-colour 2
Preset emissivity
Measured value of the pyrometer
Ambient temperature
Object temperature
Emissivity ratio to be set

Pyrometer CellaTemp PK 31

Downloads

Brochure CellaTemp PK PKF PKL
en
Brochure Flyer IO-Link
en
Manual CellaTemp PKx BF IO-Link
en
Manual CellaTemp PKx IO-Link
en
Quick guide CellaTemp PKxxBF IO-Link
en
Quick guide CellaTemp PKxx IO-Link
en
Declaration of conformity Declaration from Conformity PKxy
en
UKCA Declaration from Conformity PKxy
en
EAC Deklaration PK-PA-PT
en

Pyrometer CellaTemp PK 31

Accessories

Pyrometer CellaTemp PK 31

IO-Link IODD

Type Datei Dateigröße
IODD PK31AF1_20221222.zip 383 KB Download
IODD PK31BF1_20250922.zip 1157 KB Download

Pyrometer CellaTemp PK 31

IO-Link Manufacturer explanation

Type Datei Dateigröße
MC PK 31 BF 1_20250922_en.pdf 123 KB Download
MC PK 31 AF 1_202302_en.pdf 100 KB Download

Pyrometer CellaTemp PK 31

Measuring field calculator

Pyrometer
  • PK 31 BF 1 (1,5 m)
PK 31 BF 1 (1,5 m)
Attachment lens
  • None
  • PK 21/E (0,5 m)
None
Graphic length
mm
Measuring distance (mm)012024036048060072084096010801200132014408.00 mm
Measuring distanceMeasuring field diameter
0.00 mm15.00 mm
60.00 mm14.72 mm
120.00 mm14.44 mm
180.00 mm14.16 mm
240.00 mm13.88 mm
300.00 mm13.60 mm
360.00 mm13.32 mm
420.00 mm13.04 mm
480.00 mm12.76 mm
540.00 mm12.48 mm
600.00 mm12.20 mm
660.00 mm11.92 mm
720.00 mm11.64 mm
780.00 mm11.36 mm
840.00 mm11.08 mm
900.00 mm10.80 mm
960.00 mm10.52 mm
1,020.00 mm10.24 mm
1,080.00 mm9.96 mm
1,140.00 mm9.68 mm
1,200.00 mm9.40 mm
1,260.00 mm9.12 mm
1,320.00 mm8.84 mm
1,380.00 mm8.56 mm
1,440.00 mm8.28 mm
1,500.00 mm8.00 mm