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Keller 1110968 Скачать руководство пользователя страница 12

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Operating instructions CellaTemp PR xx

7 Shielding and Grounding

7.1 Equipotential bonding

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 shielded at both ends� In this case, be sure to install an

additional equipotential bonding line�

Unless a low-current connection between the pyrometer and the electrical cabinet

of the installation can be ensured, the pyrometer must be mounted in an insulated

manner to avoid equalising currents� The shielding must be connected to the

plant’s earthing system�

If the pyrometer is installed without an insulator and with out potential

equalisation, the interference voltage may not exceed 32V�

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Содержание 1110968

Страница 1: ...Pyrometer CellaTemp PRxx Ident Nr 1110968 11 2021...

Страница 2: ...ion 6 14 Models 7 15 Function 8 5 1 Switching threshold 8 5 2 Output signal 8 5 3 Upper threshold delay 8 5 4 Lower threshold delay 9 5 5 Switching functions 9 5 6 Internal signal processing 9 5 7 Ana...

Страница 3: ...y Radiators 18 12 3 Measurements of Real Radiators 19 12 4 Measurements errors 19 13 Ways to determine emissivity 20 13 1 Emissivity coefficient tables 20 14 Maintenance 23 14 1 Cleaning the pyrometer...

Страница 4: ...TENTION 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 shoul...

Страница 5: ...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 specified in this manual is pro...

Страница 6: ...signal and a digital signal The advantage of this technique is that there is no mechanical contact between the sensor and the hot object The instrument is suitable for the following applications Measu...

Страница 7: ...thresh olds SP_FH1 rPFL1 are exceeded First set the upper temperature value of the switching point SP_FH1 The temper ature can be defined in C or F according to the unit setting Then set the lower thr...

Страница 8: ...time delay has elapsed the delay will reset This function can be used for example to suppress spurious impulse signals at the output Upper threshold delay dS1 0 10 sec 5 4 Lower threshold delay To ma...

Страница 9: ...9 0 0 0 20 mA 1 4 20 mA ASP2 630 0 Start of measuring range 10 0 1 AEP2 631 0 End of measuring range 10 0 1 5 8 Emissivity of materials The pyrometer reacts to the thermal energy infrared radiation em...

Страница 10: ...ssibility to parameterize the device during operation With a PC IO Link software and an IO Link cable parameterization is possible outside of ongoing operation IO Link masters and parameterization sof...

Страница 11: ...absence of voltage Connect the instrument according to the following schematic 1 4 2 3 L L 0 4 20 mA shielded 24 V DC C Q 1 2 3 4 Pin 1 BN brown L Power supply 24V Pin 2 WH white Analogue output 0 4...

Страница 12: ...ded at both ends In this case be sure to install an additional equipotential bonding line Unless a low current connection between the pyrometer and the electrical cabinet of the installation can be en...

Страница 13: ...Setup The pyrometer uses the intensity of infrared radiation for optical temperature measurements It is necessary to configure the pyrometer to the emissivity coefficient of the measuring object to ob...

Страница 14: ...damping function smoothens these temperature fluctuations in order to stabilize the measuring signal The greater the time constant dAP the lower the effect of these fluctuations on the yielded temper...

Страница 15: ...le of the moving targets This avoids temperature drops Any changes are recognised at once 1 2 3 4 5 OUT2 mA t 1 Measuring object in front of pyrometer 2 Hold time 3 second internal hold time 4 Measuri...

Страница 16: ...instrument is used in ambient temperatures above 65 C it must be either cooled or shielded from excess radiant heat by means of a deflector plate 11 2 Device status Status value State Triggering even...

Страница 17: ...x4210 Warning Internal temperature exceeded Maximal zul ssige Innentemperatur berschritten Ger t abk hlen 0x5000 Error Hardware error occurred Measured values invalid Replace unit 0x5111 Warning Suppl...

Страница 18: ...urements 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 spe...

Страница 19: ...reading which is too low if the emissivity is not taken into account Considerable errors can occur at targets with reflecting polished or bright surfaces e g molten steel and metal without oxide layer...

Страница 20: ...ts Measure the temperature with a contact thermocouple and measure the surface temperature with a pyrometer Adjust the emissivity coefficient on the pyrometer until both devices show the same temperat...

Страница 21: ...pale 96 Gypsum 80 90 Glass 85 95 Graphite 98 Rubber black 94 Skin human 98 Wood 80 90 Radiator 80 85 Lime cast 91 Clinker bricks glazed 75 Cooking plate 95 Synthetic material nontransparent 65 95 Cop...

Страница 22: ...10 Asbestos cement 60 Bronze polished 1 Bronze filed smooth 15 Chromium polished 15 Iron heavily scaled 90 Iron rolling skin 75 Iron liquid 15 Gold and silver 1 Graphite filed smooth 85 Copper oxidise...

Страница 23: ...ackage shows visible signs of damage please refuse the shipment If this is not possible accept the shipment on the condition that the freight carrier s delivery record is noted with the extent of the...

Страница 24: ...PS 11 N AF 4 561585 90 Deflection mirror PS 11 W 561955 Supplementary tube ZA 01 Q 35 514234 Intermediate tube ZA 01 M 513807 Intermediate tube ZA 01 B 513596 Intermediate tube ZA 01 Q AF 2 515528 Cl...

Страница 25: ...ode yes supported Transmission rate COM2 38 400 Baud Storage temperature 20 80 C Permissible humidity 95 r H max non condensing Power requirement 24 V DC 10 20 Ripple 200 mV Housing material Stainless...

Страница 26: ...Measurement uncertainty 0 75 of temp reading C plus 2 0 K Temperature coefficient 0 1 K K for T 250 C 0 04 K for T 250 C of temp reading K Dimensions M30 x 165 mm without plug Target diameter mm Energ...

Страница 27: ...Resolution temp reading 1 K Response time t90 2 ms T 600 C Repeatability 1 K Measurement uncertainty 0 3 of temp reading C plus 2 5 K at 1 0 and Ta 23 C Temperature coefficient 0 07 K of temp reading...

Страница 28: ...from this software without specific prior written permission THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED T...

Страница 29: ......

Страница 30: ...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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