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Operating instructions CellaCast PX 8x

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� It extends from the visible range starting at wavelengths of ap-

prox. 0.5 μm to the infrared range with wavelenghs of more than 40 μm. Radiation 

pyrometers detect infrared radiation for non-contact temperature measurement�

4.1  Advantages of Non-Contact Temperature Mesasurement

•   Non-contact temperature detection means cost-effective temperature 

measurement because this technique only requires a single in-vestment in an 

instrument without any follow-up costs for consumables such as thermocou-

ples

•   This method enables temperature detection of moving objects - quick temper-

ature measurements within milliseconds - for example at automatic welding 

processes

•   Small objects with medium and high temperatures can also be easily and 

accurately measured

•   When measuring materials with low specific heat, a non-contact method does 

not induce heat loss which would distort the temperature reading (as is the 

case with contact temperature probes)� Non-contact temperature detection 

is ideal with corrosive molten materials for which the use of thermocouples is 

hardly feasible

•   Last but not least it is also possible to measure the temperature of volt-

age-carrying objects�

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� A black body emits at any wavelength 

the maximum energy possible for the specific temperature� Real bodies do not 

have this ability� In other words, a black body completely absorbs the radiation 

without reflection or transmission losses. The spectral emissivity coefficient ε(λ)  of 

a black body is equal to 1 or 100 %�

Содержание CellaCast PX 80

Страница 1: ...Pyrometer CellaCast PX 8x Ident Nr 1108088 08 2020...

Страница 2: ...Temperature Measurements 9 4 1 Advantages of Non Contact Temperature Mesasurement 9 4 2 Measurements at Black Bodies Cavity Radiators 9 15 Function 10 16 Installation 11 6 1 Selecting an installation...

Страница 3: ...Switching output OUT 2 35 13 4 Two colour channel 36 13 5 Spectral channel Lambda 1 37 13 6 Spectral channel Lambda 2 38 13 7 Advanced Features 39 14 Menu explanation 40 14 1 Analogue output 40 14 2...

Страница 4: ...Trouble shooting 51 19 1 No measured values are determined 51 20 Models 52 21 Field of view 52 22 General technical data 54 23 Device specific technical data 56 24 Field of view camera 59 25 Accessori...

Страница 5: ...ATTENTION This symbol points out guidelines If you do not observe them the device might be damaged malfunctioning or even fail to operate CAUTION This symbol points out hints and information which sh...

Страница 6: ...intended for use as described in this manual Operational safety can only be ensured when the instrument is used for its intended purpose The use of the pyrometer for any other purpose beyond what is s...

Страница 7: ...he instrument unattended when the laser is activated Do not point th elaser beam at any person During pyrometer installation and aligment make sure to avoid the possibility of laser reflections caused...

Страница 8: ...tion that the freight carrier s delivery record is noted with the extent of the damage in order to file a claim Should you discover a concealed loss or damage report it to the shipper or freight carri...

Страница 9: ...ements within milliseconds for example at automatic welding processes Small objects with medium and high temperatures can also be easily and accurately measured When measuring materials with low speci...

Страница 10: ...oefficient of the object s surface targeted spot at wavelength MS radiant energy emitted by a black body perfect radiator Most burning annealing and hardening furnaces emit a radiation of nearly 1 whi...

Страница 11: ...it is aligned with the back of the pouring stream 1 Ideal measuring point 6 2 Mechanical installation The distance should be adjusted in that way that the pouring stream is wide enough to fill up at...

Страница 12: ...responding basic pyrometer This is the end which must be screwed onto the pyrometer For proper connection the arrow on the nameplate of the fibre optic cable and the arrow on the pyrometer should poin...

Страница 13: ...e source Connect the pyrometer according to the following schematic 2 3 1 4 5 1 4 L L 24VDC 5 C Q 2 0 4 20mA Out2 3 shielded Pin 1 BN brown L Power supply24V DC Pin 4 BK black Open Collector switching...

Страница 14: ...o facilitate instrument alignment to the target spot To activate the laser press the MODE button on the rear panel for 2 seconds Alternatively the laser can be switched on with the IO Link interface T...

Страница 15: ...ser switches of an can no longer be activated To check whether the laser is activated the parameter LED lights up In normal operation the laser is switch off After activation the laser switch of again...

Страница 16: ...mit 2 and the dead time Before starting the measurement Limit 1 must have fallen below at least once Limit 2 must be exceeded continuously for the duration of the dead time T DEL If necessary the limi...

Страница 17: ...TD function Q Atd Press Mode to access the main menu The display shows Ao Press until Qu is displayed Press Mode The display shows Q EPS Press until Q ATD is displayed Press Mode The display shows t d...

Страница 18: ...display or the analogue output Afterwards the measuring time restarts automatically after the dead time has elapsed Two colour channel Qu ATD function Q Atd Press Mode to access the main menu The dis...

Страница 19: ...arameter End Then Press Mode to change to the functional menu In the functional menu press or to change to the parameter End then press Mode Alternatively the parameters can be set via IO Link A detai...

Страница 20: ...ed values coincide An increase in the emissivity ratio results in a low temperature value The graph shows an approximation of the influence of the emissivity ratio setting on the change in temperature...

Страница 21: ...g and Grounding The pyrometer housing is connected to the shielding via the cable connector Differences in ground potentials might cause an equalising current to flow between devices through a cable s...

Страница 22: ...ut OUT2 LED 3 Laser pilot light active LED 4 IO Link Communication 5 Control key MODE Selection of parameters Reading the set values Confirmation of parameter values 6 Control key and Selection of par...

Страница 23: ...mA Analogue output for temperature 12 2 Analogue output The pyrometer converts the measuring signal into a temperature proportional analogue signal of 0 4 20 mA The maximum load is 500 Ohm Ao FN Chan...

Страница 24: ...utput signal The following output functions can be selected Normally open contact d1 d1 Fn hno hysteresis function nor mally open or rather Fno window function normally open Normally closed contact d1...

Страница 25: ...elay SP set point dR switch off delay 0V t SP rP t 24V 0V t 24V dS dS dS 0V t 24V 0V t 24V dS dS dr dr dr dS dS dS dS dr dr dr dr 1 2 3 4 5 T 1 Temperature 2 Switch signal hno 3 Switch signal hno with...

Страница 26: ...switching thresholds of the window function have a hysteresis of 0 25 of the measuring range t SP rP 1 T 0V t 24V dS dS dS dS dr dr 5 0V t 24V 2 0V t 24V dS dS dS dr dr dr dr 3 dr 0V t 24V 4 1 Tempera...

Страница 27: ...ss or the sighting cone of the pyrometer gets dirty during a measure ment The parameter dirt alert is activated with the parameter d1 d1 s Dir or d2 d2 s Dir The dirt alert is a warning function The w...

Страница 28: ...often be desirable to determine the peak temperature during a defined time period for example when the objects to be measured move past the pyrom eter resulting in temperature readings which would app...

Страница 29: ...ed to automatically measure the temperature of a discontinuous ly running process For example it can be used to determine the temperature of bolts passing the pyrometer acyclically and which have a va...

Страница 30: ...Ano t 0 displays the lower temperature range limit during the measurement T HLD indicates the previous tem perature reading during the current measurement As an option the green Status LED can light...

Страница 31: ...rement can start with the cycle starting conditions described above Cut off interval T DIS The interval between one completed sampling and the start of a new sampling If a measuring cycle does not sta...

Страница 32: ...Act Li I Li 2 t dEl t dis t Act Li 2 limit 2 t dEL time delay Li I limit 1 t Act sampling time t diS cut off interval 1 Measuring object in front oft he pyrometer 2 Temperature output t Ano off 3 Pre...

Страница 33: ...fers the possibility to parameterize the device during operation The IODDs required for configuring the IO Link device as well as detailed information on process data set up diagnostic functions and p...

Страница 34: ...34 Operating instructions CellaCast PX 8x 13 2 Switching output OUT 1 8888 Run dI S dI Fn dI SP End dI rP dI dS dI dr Mode Mode Mode d1 Ao dI d2 EF End Mode qu L1 L2...

Страница 35: ...35 EN Operating instructions CellaCast PX 8x 13 3 Switching output OUT 2 Ao dI d2 EF End Mode qu L1 L2 8888 Run d2 S d2 Fn d2 SP End d2 rP d2 dS d2 dr Mode Mode Mode d2...

Страница 36: ...ak hold function is active ATD ADT Function Submenu only available when ATD function is active 8888 Run Ao dI d2 q EPS q drt q FiL End EF End q MEM q tMP q Phd q AtD END dAP TIME t dEL t Act t diS t o...

Страница 37: ...ailable when Peak hold function is active ATD ADT Function Submenu only available when ATD function is active 8888 Run EPS tAU FiL End MEM tMP Phd AtD END dAP TIME t dEL t Act t diS t oUT Li I t Ano t...

Страница 38: ...lable when Peak hold function is active ATD ADT Function Submenu only available when ATD function is active 8888 Run EPS tAU FiL End MEM tMP Phd AtD END dAP TIME t dEL t Act t diS t oUT Li I t Ano t F...

Страница 39: ...laCast PX 8x 13 7 Advanced Features CAM Parameter and submenu only available at pyrometer with camera 8888 Run diSP Unit t SiM End rES Mode i t cAM c tbc c coL c id End Mode c ouL Mode EF CAM Ao dI d2...

Страница 40: ...upper limit of temp span End End Exit menu 14 2 OUT 1 dI Parameter Function Comments dI S Select source L1 Lambda 1 L2 Lambda 1 Q two colour mode A L1 AATD tAct 1 A L1 tATD Trig 1 A L2 A ATD tAct 2 A...

Страница 41: ...de A L1 AATD tAct 1 A L1 tATD Trig 1 A L2 A ATD tAct 2 A L2 t ATD Trig 2 A q AcATD tAct two colour mode A q trATD Trig two colour mode Dirdirt allert tU inner device temperature D2 Fn Output function...

Страница 42: ...0 1 100 signal intensity q FiL Smoothing time 0 999 9 q MEM Memory function Off off Atd ATD function P hd Peak Hold function q Atd Opening of the lower menu level ATD function t dEL Time delay See ch...

Страница 43: ...ak Hold function tiME Hold time Peak Hold function Time in second dAP Damping Damping End Closing of the lower menu level Peak Hold function q tMP Actual temperature reading The display shows the actu...

Страница 44: ...ansmission of the used disk can be entered here FIL Smoothing time MEM Memory function Off Off P hld Peak Hold function Atd ATD function Atd Opening of the lower menu level ATD Function t dEL Time del...

Страница 45: ...Opening of the lower menu level Peak Hold Function tiME Hold time Peak Hold function Time in sec dAP Damping Damping End Closing of lower menu level Peak Hold Function tMP Actual temperature reading...

Страница 46: ...r off1 99 display of the measuring point number in the camera display EnD Closing of the lower menu level of the camera diSP Process value display on current temperature value off run is shown on the...

Страница 47: ...ormation 1 Select main menu Press MODE to access the main menu MODE Ao 1 2 2 Press oder until the required output function or advanced fea tures is displayed 3 Select parameter Press MODE MODE Ao Fn 3...

Страница 48: ...In the functional menu press or to change to the parameter End then press MODE If you press both keys only briefly you will exit the layer ESC func tion 16 Error indications Overload switching output...

Страница 49: ...shown in the display t SiM Select extended functions EF Press MODE The display shows the previously set temperature Press the key for 2 s Temperature flashes 3 times Use the keys to set the desired t...

Страница 50: ...ics against contamination in harsh industrial envi ronments an additional protective screen is often used A contamination of the protective screen also leads to a reduced indication of the measuring v...

Страница 51: ...strength Q Si6 In Checking the signal strength Press Mode The display shows Ao Press until Qu is displayed Press Mode Im Display wird Q EPS angezeigt Press until Q Si6 is displayed Press Mode The disp...

Страница 52: ...distance ratio D The measurement field diameter d at the focal distance is defined by the formula Pyrometer Type Temp range Application PX 83 650 1700 C 750 2400 C For measurement of liquid metals dis...

Страница 53: ...n our website you will find a measurement field calculator Select the suitable pyrometer enter the measuring distance and the length of the measurement field and you will get the suitable measurement...

Страница 54: ...perature 0 65 C without cooling Zul Umgebungstemperatur Lichtleiterausf hrung Basic unit 0 65 C without cooling Measuring head and fibre optic cable 0 250 C IO Link revision V1 1 download compatible t...

Страница 55: ...ng with target marking laser spot light or integrated camera Dimensions 65 x 220 mm without plug Abmessungen Lichtleiterausf hrung 65 x 187 mm basic unit without plug 30 x 67 86 mm LWL measuring head...

Страница 56: ...Dh 30 1 PZ 20 08 Dv 230 1 Dh 45 1 PZ 20 01 Dv 375 1 Dh 75 1 PZ 20 06 Dv 55 1 Dh 10 1 PZ 20 05 Temperature range 750 2400 C Dv 350 1 Dh 50 1 PZ 20 01 Dv 580 1 Dh 85 1 PZ 20 06 Dv 85 1 Dh 11 1 PZ 20 05...

Страница 57: ...c PZ 20 01 1 2 m optic PZ 20 06 Distance to target size ratio 150 1 PZ 20 01 240 1 PZ 20 06 Resolution current output 0 2 K 0 03 of selected range Resolution temperature reading 1 K Reponse time t98 1...

Страница 58: ...ge 0 2 m optic PA 41 01 M30 Distance to target size ratio 190 1 PZ 41 01 Resolution current output 0 2 K 0 03 of selected range Resolution temperature reading 1 K Reponse time t98 20 ms T 850 C Measur...

Страница 59: ...FOV 3 Field of view pyrometer Optics PZ 20 01 PZ 20 03 PZ 20 06 Measuring distance m HFOV mm VFOV mm HFOV mm VFOV mm HFOV mm VFOV mm 0 2 8 5 6 4 0 3 14 11 0 4 16 12 20 15 1 45 34 1 2 54 41 33 24 2 92...

Страница 60: ...1890 1418 715 536 25 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 follo...

Страница 61: ......

Страница 62: ...to any form of mechanical or electronic reproduction as well as to electronic transmission in any form through any medium Please note Unless otherwise stated in this instruction manual the instruments...

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