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Pyrometer
CellaTemp PX 41
Ident no.: 1102813 01/2020

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Summary of Contents for Keller CellaTemp PX 41

  • Page 1 Pyrometer CellaTemp PX 41 Ident no.: 1102813 01/2020...
  • Page 2: Table Of Contents

    Operating instructions CellaTemp PX 41 Content 11 General ��������������������������������������������������������������������������������������������������������������5 1�1 Information about the manual ���������������������������������������������������������������������5 1�2 Explanation of the symbols �������������������������������������������������������������������������5 1�3 Liability and Warranty ����������������������������������������������������������������������������������5 1�4 Copyright �����������������������������������������������������������������������������������������������������6 12 Safety �����������������������������������������������������������������������������������������������������������������6 2�1 Intended use �����������������������������������������������������������������������������������������������6 2�2 User´s responsibility ������������������������������������������������������������������������������������6 2�3 Safety requirements ������������������������������������������������������������������������������������6...
  • Page 3 Operating instructions CellaTemp PX 41 10 Shielding and Grounding ���������������������������������������������������������������������������������18 11 Operating control and display ��������������������������������������������������������������������������19 11�1 Processing of measuring signals�����������������������������������������������������������20 11�2 Analogue output ������������������������������������������������������������������������������������20 11�3 Switching threshold OUT 1 ��������������������������������������������������������������������21 11�4 Output signal �����������������������������������������������������������������������������������������21 11�5 Switch on delay �������������������������������������������������������������������������������������21 11�6 Switch off delay �������������������������������������������������������������������������������������21...
  • Page 4 Operating instructions CellaTemp PX 41 16 Service functions ���������������������������������������������������������������������������������������������46 16�1 Reset all parameters to factory settings ��������������������������������������������������46 16�2 Simulate a desired temperature ��������������������������������������������������������������46 17 Maintenace ������������������������������������������������������������������������������������������������������47 17�1 Cleaning the pyrometer lens �������������������������������������������������������������������47 17�2 Replacing the protective screen ��������������������������������������������������������������47 18 Models �������������������������������������������������������������������������������������������������������������48 19 Field of view �����������������������������������������������������������������������������������������������������48...
  • Page 5: General

    Operating instructions CellaTemp PX 41 1 General 1.1 Information about the manual The purpose of the Operating Manual is to provide the user with all necessary information to be able to install the pyrometer and any necessary accessories� Before starting installation, be sure to read and understand this entire manual, in...
  • Page 6: 1�4 Copyright

    Operating instructions CellaTemp PX 41 1.4 Copyright This Operating Manual should be treated as confidential� It is solely intended for the use by persons involved with the instrument� This manual may not be made available to a third party without prior Manufacturer’s consent� Please contact the Manufacturer if the need should arise�...
  • Page 7: 2�4 Laser Radiation Hazard

    Operating instructions CellaTemp PX 41 2.4 Laser Radiation Hazard Laser radiation can be harmful to the eye! The CellaTemp PX with laser operates with a class 2 red light laser� Direct pro- longed viewing of a laser beam can injure the retina� Therefore, the following safe- ty precautions must be strictly observed, otherwise the laser may not be operated! •...
  • Page 8: Shipping, Packaging And Disposal

    Operating instructions CellaTemp PX 41 If the pyrometer is installed within, a machine or equipment in such a way that the instrument’s warning label is visibly blocked, additional laser warning labels (not included in scope of delivery) must be affixed to the equipment or accessory in immediate vicinity to the laser beam emission path opening�...
  • Page 9: Theory Of Non-Contact Temperature Measurements

    Operating instructions CellaTemp PX 41 4 Theory of Non-Contact Temperature Measurements All materials radiate thermal energy in all states of aggregation above absolute zero� This radiation is mainly caused by atomic or molecular oscillations� This temperature radiation is only a limited sector within the total electromagnetic radiation spectrum�...
  • Page 10: 4�2 Measurements At Black Bodies (Cavity Radiators)

    Operating instructions CellaTemp PX 41 4.2 Measurements at Black Bodies (Cavity Radiators) A black body or a black radiator is used to calibrate radiation pyrometers� This black body is designed in a way that its radiation does not depend on material characteristics, but only on its temperature�...
  • Page 11: 4�4 Measurements Errors

    Operating instructions CellaTemp PX 41 4.4 Measurements errors The cause of measurement errors in the use of pyrometers is often an incorrectly determined or wrong emissivity� Another source of error is the reflected „back- ground radiation“� If the measurement object has a low emissivity and there are hotter objects in the surrounding area, measurement results can be affected�...
  • Page 12: Function

    Operating instructions CellaTemp PX 41 6 Function The pyrometer detects the radiated infrared radiation of objects without contact and converts them into an electrical switching signal and an analogue output signal� 7 Installation 7.1 Assembly basic unit The basic unit should be mounted where it is not unnecessarily exposed smoke, heat or vapour�...
  • Page 13: 7�3 Alignment

    Operating instructions CellaTemp PX 41 7.3 Alignment Align the pyrometer with the object to be measured� The pyrometer should, if pos- sible, be installed at an angle of 90 ° to the measuring object� The angle should not be less than 45 ° from the vertical� When measuring with a two-colour pyrometer, the field of view does not have to be filled entirely by the target object�...
  • Page 14: 7�4 Focussing

    Operating instructions CellaTemp PX 41 7.4 Focussing The pyrometers have a laser that can be activated to align the sensing head to the target spot� To activate the laser, press the MODE button in the real panel for 2 seconds�...
  • Page 15: Electrical Connection

    Operating instructions CellaTemp PX 41 8 Electrical connection ATTENTION • The pyrometer may only be installed by a skilled, qualified electrician� Do not connect the instrument while the voltage supply source is turned on� Please observe international safety regulations at all times�...
  • Page 16: Setup

    Operating instructions CellaTemp PX 41 9 Setup The pyrometer uses the intensity of infrared radiation for the non-contact tempera- ture measurement� The pyrometer PX can be used as spectral or two-colour pyrometer� When delivered, the pyrometer is configured for the two-colour measurement�...
  • Page 17: 9�2 Setup One-Colour Mode

    Operating instructions CellaTemp PX 41 9.2 Setup one-colour mode By default, the pyrometer is set for quotient measurement� If the pyrometer is to be used as a spectral pyrometer, the configuration of the analogue output must be changed to spectral mode�...
  • Page 18: 9�3 Transmission Factor (One-Colour Mode)

    Operating instructions CellaTemp PX 41 9.3 Transmission factor (one-colour mode) Besides the emissivity correction, a pyrometer must be adjusted for the transmis- sion properties of any supplementary lens and/or protective window screwed onto the pyrometer� Set the pyrometer for the specific transmission factor (a percentage value) which is indicated either in the product’s data sheet or on the lens itself�...
  • Page 19: Operating Control And Display

    Operating instructions CellaTemp PX 41 11 Operating control and display 1 to 4: Indicator-LEDs LED 1 = Switching state of switching output OUT1 LED 2 = Switching state of switching output OUT2 LED 3 = Laser pilot light active LED 4 = IO-Link Communication 5: Control key [MODE] •...
  • Page 20: 11�1 Processing Of Measuring Signals

    Operating instructions CellaTemp PX 41 11.1 Processing of measuring signals The pyrometer disposes of an IO-Link interface� The generated three output signals correspond to the parameterization: • Out 1: Switching output/ IO-Link ■ Switch signal: threshold value temperature / status signal •...
  • Page 21: 11�3 Switching Threshold Out 1

    Operating instructions CellaTemp PX 41 11.3 Switching threshold OUT 1 OUT1 changes its switching status when the configured upper or lower thersholds [d1. S P,d1. r P] are exceeded� Source d1. S specifies the signal that is output at OUT1�...
  • Page 22: 11�7 Hysteresis Function

    Operating instructions CellaTemp PX 41 11.7 Hysteresis function [dr] [dr] [dS] [dS] [dr] [dS] [dS] [dS] [dr] [dS] [dr] [dS] [dS] [dr] [dS] [dr] = temperature rP = reset point = time dS = switch on delay SP = set point...
  • Page 23: 11�8 Window Function

    Operating instructions CellaTemp PX 41 11.8 Window function [dS] [dr] [dS] [dr] [dr] [dS] [dr] [dr] [dS] [dr] [dS] [dr] [dS] [dS] = temperature rP = lower limit value = time dS = switch on delay SP = upper limit value...
  • Page 24: 11�9 Switching Output Out 2

    Operating instructions CellaTemp PX 41 11.9 Switching output OUT 2 OUT2 changes its switching state according to the adjusted function� The functions and parameters are the same as OUT 1� 11.10 Dirt alert A dirt alert function is available to ensure a safe measurement for the PX pyrom- eter�...
  • Page 25: 11�11 Damping Function

    Operating instructions CellaTemp PX 41 11.11 Damping function When the target object‘s temperature is erratic, the damping function smoothens these temperature fluctuations in order to stabilize the measuring signal� The greater the time constant, the lower the effect of fluctuations on the yielded temperature reading�...
  • Page 26: 11�13 Atd Function

    Operating instructions CellaTemp PX 41 choose a hold time which is approximate 1�5 time as long as cycle of the moving targets� This avoids temperature drops� Any changes are recognised at once� Two-colour mode [q] → [q. P hd] → [t iME] One-colour mode [L1] →...
  • Page 27 Operating instructions CellaTemp PX 41 Before beginning the measurement, the temperature Limit 1 (LI . 1 ) reading must have been lower than Limit 1 at least once� If Autoreset (A�RST=ON) the limit 1 will be ignored Limit 2 must be exceeded at least fort he duration of Limit 2 (LI .
  • Page 28 Operating instructions CellaTemp PX 41 Threshold for plausibility check: lower limit which is Plausibility (t. F AL) acceptable for a valid measurement� Threshold for plausibility check: upper limit which is Plausibility (t. r iS) acceptable for a valid measurement� When sampling is completed, the average temperature value or „0“ will be output�...
  • Page 29 Operating instructions CellaTemp PX 41 1500 Li. 2 t.dEl t.Act t.dEl t.Act t.dis t.dis Li. I 1000 Li. 2 = limit 2 t. d EL = time delay Li. I = limit 1 t. A ct = sampling time t. d iS = cut-off interval Measuring object in front oft he pyrometer Temperature output t.
  • Page 30: 11�14 Io-Link

    The IODDs required for configuring the IO-Link device as well as detailed information on process data set-up, diagnostic functions and parameter addresses are available in the download area at www�keller�de/its� For IO-Link operation a 3-wire cable port Class A (Type A) must be used�...
  • Page 31: 12�2 Switching Output Out 1

    Operating instructions CellaTemp PX 41 12.2 Switching output OUT 1 8888 Mode dI . S Mode dI .Fn dI .SP dI .rP dI .dS dI .dr Mode Mode...
  • Page 32: 12�3 Switching Output Out 2

    Operating instructions CellaTemp PX 41 12.3 Switching output OUT 2 8888 Mode d2 . S d2 .Fn Mode d2 .SP d2 .rP d2 .dS d2 .dr Mode Mode...
  • Page 33: 12�4 Two-Colour Channel

    Operating instructions CellaTemp PX 41 12.4 Two-colour channel 8888 Mode q.EPS t.dEL q.drt t.Act t.diS q.FiL Mode q.MEM Li. I Mode q.AtD Li.L2 Mode q.Phd t.FPr q.tMP t.Ano P.Phd t.oUT q.Si6 TIME Mode t.FAL Mode t.riS t.L2c Mode l.Aut Mode P�Phd...
  • Page 34: 12�5 Spectral Channel Lambda 1

    Operating instructions CellaTemp PX 41 12.5 Spectral channel Lambda 1 8888 Mode ' .EPS t.dEL ' .tAU t.Act t.diS ' .FiL Li. I ' .MEM Mode Mode ' .AtD Li.L2 Mode ' .Phd t.FPr ' .tMP t.Ano P.Phd t.oUT TIME...
  • Page 35: 12�6 Spectral Channel Lambda 2

    Operating instructions CellaTemp PX 41 12.6 Spectral channel Lambda 2 8888 Mode " .EPS t.dEL " .tAU t.Act t.diS " .FiL " .MEM Li. I Mode " .AtD Li.L2 Mode Mode " .Phd t.FPr " .tMP t.Ano P.Phd t.oUT TIME...
  • Page 36: 12�7 Advanced Features

    Operating instructions CellaTemp PX 41 12.7 Advanced Features 8888 Mode diSP Unit t.SiM rES . i.t. Mode Mode...
  • Page 37: Menu Explanation

    Operating instructions CellaTemp PX 41 13 Menu explanation 13.1 Analogue output Parameter Function Comments L1 Lambda 1 one-colour mode Select source L2 Lambda 1 one-colour mode Ao . S Q two-colour mode 0 – 20 mA 0/4 – 20 mA Ao .
  • Page 38: 13�3 Out 2 (D2)

    Operating instructions CellaTemp PX 41 Lower threshold dI . S P Upper threshold dI . r P Switch-on delay 0 – 10 s, 0�1 steps dI . d S Switch–off delay 0 – 10 s, 0�1 steps dI . d r Exit menu 13.3 OUT 2 (d2)
  • Page 39: 13�4 Two-Colour Channel

    Operating instructions CellaTemp PX 41 13.4 Two-colour channel (qu) Parameter Function Comments Ratio correction 80… 120 % q. E PS Pollution warning level 0�1 - 100 q. d rt Relative lower limit, two-colour tempera- 0�1 – 100 signal intensity q. l iM...
  • Page 40 Operating instructions CellaTemp PX 41 Parameter Function Comments Check, whether threshold 2 is fallen t. L 2c below during the See chapter ATD function measuring time Timeout t. A Ut Closing of the lower menu level ATD function Opening of the lower menu level Peak-Hold q.
  • Page 41: 13�5 Spectral Channel (L1) (L2)

    Operating instructions CellaTemp PX 41 13.5 Spectral channel (L1) (L2) Parameter Function Comments Correction of the radiation properties of Emissivity E . P . S the measured object (10���110%) When using protection shields, the Transmission factor value of the transmission of the used disk can be entered here�...
  • Page 42 Operating instructions CellaTemp PX 41 Parameter Function Comments Check, whether threshold 2 is fallen See chapter ATD function t. L 2c below during the measuring time Closing of the lower menu level ATD Function Opening of the lower menu level Peak- P .
  • Page 43: 13�6 Advanced Features

    Operating instructions CellaTemp PX 41 13.6 Advanced Features (EF) Parameter Function Comments on current temperature value Process value display diSP off run is shown on the display Temperature unit Temperature displayed in °Cor °F Unit Temperature A temperature can be simulated t.
  • Page 44: Parameterizing

    Operating instructions CellaTemp PX 41 14 Parameterizing When you reset/adjust the operating parameters, the instrument remains in run mode� It continues to operate, using the current parameter settings, until you have finished configuring by pressing [MODE]� 14.1 Setting parameters – general information Select main menu ►...
  • Page 45: Error Indications

    Operating instructions CellaTemp PX 41 Confirm parameter value ► Press [MODE]� Ao .Fn Ao .Fn > The display indicates the parameter� MODE The new value has been saved and will take effect� Exit operating parameter layer ► Wait 30 seconds ►...
  • Page 46: Service Functions

    Operating instructions CellaTemp PX 41 16 Service functions 16.1 Reset all parameters to factory settings ► [rES . ] Select extended functions [EF] in the menu ► Press [MODE] > RES is shown in the display ► Press the ˅ key for 2 s >...
  • Page 47: Maintenace

    Operating instructions CellaTemp PX 41 17 Maintenace 17.1 Cleaning the pyrometer lens A soiled lens leads to wrong display of the measured value� ► Check the lens regularly and clean it, if required. • Remove dust by blowing or with a soft brush�...
  • Page 48: Models

    Operating instructions CellaTemp PX 41 18 Models Pyrometer Type Temp. range Application 700 - 1800 °C Metal, cement, lime, graphite, PX 41 AF 1x 800 - 2400 °C glass drops, crystal growth 900 - 3000 °C 19 Field of view With a pyrometer with focusable optics, the size of the measurement field is determined by the distance ratio D�...
  • Page 49: General Technical Data

    Operating instructions CellaTemp PX 41 20 General technical data Pyrometer Analogue output 0(4) -20 mA linear according NAMUR 43, switchable. scalable load 500 Ω Switching output OUT1 PNP Open Collector outputs 24 V, ≤ 150 mA Switch point [°C]/ return switch [°C], hysteresis ≥...
  • Page 50 Operating instructions CellaTemp PX 41 Configuration parameter Ratio correction 80 – 120 % Emissivity ʎ 1, ʎ 2 ε 10 - 110 % Transmission factor ʎ 1, ʎ 2 Smoothing time t98 0�1 – 999�9 s Peakhold Function 0�1 – 999�9 s...
  • Page 51: Device-Specific Technical Data

    Operating instructions CellaTemp PX 41 21 Device-specific technical data PX 41 AF 11, AF 21, AF 22 Temperture range 800 - 2400 °C Sensor Photodiode Spectral sensitivity 0�95 / 1�05 µm Focussing range 0,2 m - ∞ Optik (PA 41.01) M30 0,12 m - ∞...
  • Page 52 Operating instructions CellaTemp PX 41 PX 41 AF 111, AF 121, AF 122 Temperture range 900 - 3000 °C Sensor Photodiode Spectral sensitivity 0�95 / 1�05 µm Focussing range 0,2 m - ∞ Optik (PA 41.01) M30 0,12 m - ∞ Optik (PA 41.05) M16 33 –...
  • Page 53 Operating instructions CellaTemp PX 41 PX 41 AF 211, AF 221, AF 222 Temperture range 700 - 1800 °C Sensor Photodiode Spectral sensitivity 0�95 / 1�05 µm Focussing range 0.2 m - ∞ optic (PA 41.01) M30 0.12 m - ∞ optic (PA 41.05) M16 33 –...
  • Page 54: Accessories

    Operating instructions CellaTemp PX 41 22 Accessories A range of mechanical and electrical accessories are available for mounting the pyrometers in industrial environments� For the selection of the components use the following link: https://www.keller.de/en/its/pyrometers/accessories.htm 23 Default settings The default settings can be found in the description of the IODD� You can find it on our website www�keller�de/en/its/mediacenter�...
  • Page 56 Please note: Unless otherwise stated in this instruction manual, the instruments described herein are subject to change without prior notice, particularly modifications for the sake of technological advancement� © 2020 KELLER HCW GmbH Carl-Keller-Straße 2-10 D-49479 Ibbenbüren-Laggenbeck Germany www�keller�de/its...

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