Summary of Contents for ITS Telecom CellaTemp PA 21
Page 1
Operating manual PA 21, 31, 36 Pyrometer CellaTemp PA 21, 31, 36 Mat. No.: 103 9316 10/2018...
Page 2
Operating manual PA 21, 31, 36 Copyright prohibits the reproduction or distribution of this instruction manual, including text, photographs or images contained herein, in whole or in part, for any purpose whatsoever, without prior consent of the au- thor. This applies to any form of mechanical or electronic reproduction as well as to electronic transmission...
Operating manual PA 21, 31, 36 Miscellaneous Information about this manual The purpose of the Operating Manual is to provide the user with all nec- essary 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 particular the chapter on safety! The instructions contained in this manual, especially those concerning safety, as well as site-specific regulations governing UV radiation must be complied with at all times!
Operating manual PA 21, 31, 36 Copyright This Operating Manual should be treated as confidential. It is solely in- tended for use by persons involved with the instrument. This manual may not be made available to a third party without prior Manufacturer’s con- sent.
Operating manual PA 21, 31, 36 User’s responsibility The pyrometer may only be used when it is in perfect working condition. Safety requirements The instrument works with an operating voltage of 24 VDC. The voltage re- quired for operation must be supplied by a separate power supply. This power supply unit must conform to directive DIN IEC 61010.
Operating manual PA 21, 31, 36 General Description The CellaTemp PA Series provides efficient, microprocessor-controlled pyrometers for non-contact temperature measurements. The pyrometers with fibre optics are preferably used for high ambient temperatures up to 250 °C without cooling or in areas with limited access. The spectral pyrometers PA 21, PA 31 and PA 36 are used for tempera- ture measurements from 300 °C to 2000 °C, 600 –...
Operating manual PA 21, 31, 36 Integrated Digital Display Operating Controls and Display The rear panel of the CellaTemp PA has a 4-digit display and 3 push- buttons. The display shows the current temperature or, during configura- tion using the push-buttons, the display will show the corresponding pa- rameter.
Operating manual PA 21, 31, 36 Power Requirement 24 V DC The instrument works with an operating voltage of 24 V DC. The voltage required for operation must be supplied by a separate power supply. This power supply unit must conform to directive DIN IEC 61010. The supply voltage is ...
Operating manual PA 21, 31, 36 yellow green VK 02/A Load maximal 500 Ω For all pyrometers of the PA series the current outputs are short-circuit- proof and share one ground connection via pin 8 of the connector. Each current output can be individually scaled and can be set either at the dis- play or via interface.
Operating manual PA 21, 31, 36 white +24 V + 24 V = 30 mA 24 V DC brown 51 KΩ relay lamp brown Digital input 1 blue Digital input 2 Ground VK 02/A See Chapter 7.2.2 for more information configuration. Getting Started General installation tips Install the pyrometer in a location where it will not be unnecessarily ex-...
Page 16
Operating manual PA 21, 31, 36 A laser spot light, which can be switched on and off by means of a mode- button for 2 s on the rear side of the pyrometer, serves as a sighting aid. It will automatically switch off after configured time. For focal adjustment loosen the shown socket screw (hexagon socket screw DIN 916) with a wrench (DIN 911) and shift the internal body of the tube towards the lens tube.
Operating manual PA 21, 31, 36 Safety instructions and precautions The user must be familiar with following safety instructions. 5.3.1 Laser Radiation Hazard Laser radiation can be harmful to the eye! CellaTemp PA operates with a class 2 red light laser. Direct prolonged viewing of a laser beam can injure the retina.
Operating manual PA 21, 31, 36 Fig. 5.2 Laser warning label affixed to the pyrometer 5.3.4 Laser warning label must be visible! 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.
Operating manual PA 21, 31, 36 The following parameters are important for initial set-up prior to first-time operation. See Chapter 6 for a comprehensive list of all adjustable pa- rameters. Parameter configuration Explanation layer Emissivity spectral channel 1 EPS.1 C001 (Chapter 5.5) Lower limit of temperature span AO1._...
Operating manual PA 21, 31, 36 NOTE ! During normal operating mode, emissivity can be set at the py- rometer using the ▲▼ buttons. When simultaneously pressing the MODE key, the display shows the current measuring tempera- ture while the emissivity coefficient continues to be adjusted in the background.
Operating manual PA 21, 31, 36 Functioning of the pyrometer Internal signal processing Tempera- Sensor Calculate temp. Segmented Fil- peak value ture reading of target object linearisation / Display PreMax...
Operating manual PA 21, 31, 36 Configuration and Setup Signal Conditioning 7.1.1 Emissivity and Transmittance Besides the emissivity correction (mentioned in Chapter 5.5), a pyrome- ter must be adjusted for the transmission properties of any supplemen- tary 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 products’...
Operating manual PA 21, 31, 36 Target object = 900 °C Emissivity < 1 Reflection > 0 Furnace radiation T = 950 °C Back Source of extraneous radiation. Example: furnace 950 °C 7.1.3 Temperature offset using linear interpolation When necessary, CellaTemp PA allows you to program an offset for the temperature reading reported.
Operating manual PA 21, 31, 36 Temperature before offset 7.1.4 Signal Smoothing Filter When the target object’s temperature is erratic, it makes sense to smooth these temperature fluctuations in order to stabilize the signal. The greater the time constant t (user definable), the lower the effect of these fluctuations on the yielded temperature reading.
Operating manual PA 21, 31, 36 7.1.5 Min/Max Data CellaTemp PA features data memory to store minimum and maximum (peak) temperature readings. This feature can be configured in one of the following modes: • Memory off • Store minimum value (single) •...
Page 26
Operating manual PA 21, 31, 36 target object in the pyrometer’s field of view temp. reading with double max. buffer holdtime temp. measurement without double max. buffer time Automatic temperature detection (ATD) function * This function serves to automatically detect the temperature during man- ufacturing processes with discontinuous or intermittent material flow.
Page 27
Operating manual PA 21, 31, 36 NOTE ! If the parameter T.ACT= 0 the algorithm of the ATD function will detect automatically the end of the discontinuous process. At the parameter T.ACT is shown “auto” instead of the time. The configuration of the Normal Display Mode (ANO) determines which temperature value is saved during sampling „t=0“...
Page 28
Operating manual PA 21, 31, 36 A cut-off interval (time lag) begins after the sampling time has ended This cut-off interval must expire before the next measurement can start with the cycle starting conditions described above. Cut-off interval The interval between one completed sam- T.DIS pling and the start of a new sampling..
Operating manual PA 21, 31, 36 I/O Configuration 7.2.1 Selectable current output range You will need to define the current loop scale and define a source for an analogue output signal. For a spectral pyrometer the analogue output Ao1 is set to Spectral channel 1 In the normal operating mode, the selected source for Ao1 will be the current object temperature.
Operating manual PA 21, 31, 36 Configuration example PA 21: Ao1: temperature reading of spectral channel 1 300 - 2000 °C ≡ 4 - 20 mA Ao2: temperature reading of spectral channel 1 1000 - 1500 °C ≡ 4 - 20 mA 7.2.2 Digital outputs One of the following functions can be assigned to each of the digital out- puts:...
Operating manual PA 21, 31, 36 7.2.3 Function „Level“ Temperature [°] Switching thresh- old (level) Hysteresis Digital output [V] 24 V Switch signal with hold time = 0 and delay time = 0 s Delay time Delay time Digital output [V] Hold time Hold time 24 V...
Operating manual PA 21, 31, 36 Function „Range“ 7.2.4 Temperatur [°C] Switching threshold „Range“ Digital output [V] 24 V Switch signal with hold time = 0 and delay time = 0 s Delay time Delay time Digital output [V] Hold time Hold time 24 V Switch signal with...
Operating manual PA 21, 31, 36 7.2.5 Digital inputs If you want to use the digital output as an input, you must first manually deactivate the digital output and configure the following parameters: • Select a current output range (either 0 – 20 mA or 4 – 20 mA) for Ao1/Ao2 •...
Operating manual PA 21, 31, 36 C011 General functions (configuration layer 7.3.1 Green Status LED You can assign specific functions to the LED: • LED is continuously lit to indicate 24 V operating voltage • LED indicates status of switching output 1 •...
Operating manual PA 21, 31, 36 Setting Parameters at the device In addition to the configuration possibilities described in Chapter 7, many parameters can be adjusted at the rear panel using push buttons. These settings can be accessed via configuration layers. Configuration layers The configuration layers are structured as follows: •...
Page 36
Operating manual PA 21, 31, 36 DIS.M ATD function in process Hold time for MEM.T Hold time in sec. Min/Max Smoothing filter for FIL.M min/max * FIL.T Smoothing time* Time t98 in sec. no external deletion external delete for CLR.M EXT.1 delete when 0-24V for switching output 1 Min/Max memory*...
Operating manual PA 21, 31, 36 C010 8.1.2 Configuration I/O (configuration layer: Parame- Function Explanation Spectral channel 1 AO1.S Ao1 select source (the selected temp. reading source will be shown on the display) Ao1 define lower lim- AO1._ it of temp. span Ao1 define upper AO1.~ limit of temp.
Page 38
Operating manual PA 21, 31, 36 Status LED indicates ‘ready’ Lambda 1 L1.PR Lambda 1 without peak picker DO2.S Do2 select source Internal device temperature M.TR.1 Triggered by ATD function Lambda 1* A.AC.1 Measuring time ATD Lamda 1* Swich direction “Level” (output activ if limit LVL.
Operating manual PA 21, 31, 36 C011 8.1.3 General Functions (configuration layer: Parameter Function Explanation LED indicates 24V LED indicates digital output 1 LED.G Green status LED LED indicates digital output 2 LED indicates running measurement in TAC1 mode for ADT function* keypress laser disabled PILO.
Operating manual PA 21, 31, 36 8.1.5 Simulated current signal for outputs Ao1 and Ao2 C100 (configuration layer: Parameter Function Explanation Current output 1 Enter a value in milliampere to simulate a current AO1. signal for Ao1 Current output 1 Enter a temperature value to simulate a temper- AO1.T incl.
Operating manual PA 21, 31, 36 First, open the Run dialog box by using the Windows key + R key combi- nation. Then enter the command “devgmt.msc.” and click OK to open the Device Manager. Then click Ports (COM and LPT). You will see a listing of ports and should now be able to see which COM Port the PA USB connection assigned to.
Operating manual PA 21, 31, 36 11.1 CellaView via USB point-to-point connection • Install the USB driver • Connect the pyrometer to the PC • Start CellaView • Select the correct COM port or use the CellaView search function. For more information on how to work with CellaView read the separate CellaView manual.
Operating manual PA 21, 31, 36 Caution ! If the supply voltage or current output are conducted via this ca- ble, then make sure to consider the voltage drop if the cable length is greater than 100 m. • Disconnect the pyrometer from any voltage source •...
Page 44
Operating manual PA 21, 31, 36 Caution ! All pyrometers must be connected to the same voltage supply. The maximum length of the branch lines to the pyrometer is 5 m.
Operating manual PA 21, 31, 36 • Disconnect the pyrometer from any voltage source • Activate or deactivate the termination of the respective partici- pant (see termination of RS485 bus) • Install all required electric connections • Connect the converter with the PC •...
Operating manual PA 21, 31, 36 Most key parameters are directly available in the main menu. Further functions are contained in submenus. Navigation within the menus is ex- plained in the following graphics: Enter press Main Menu Execute the [RETURN] command or [ESC] Select [KEY]...
Operating manual PA 21, 31, 36 Please note: All symbols are ASCII coded; preceding zeros will be included in the transmission The cycle time in which the temperature reading is transmitted can be set at the PC terminal (minimum cycle duration is 0.1 second). 12.2 Terminal connection via USB For communication through a terminal connection via USB set the pa-...
Page 48
Operating manual PA 21, 31, 36 In order to prevent reflections on the RS485 connection, it is absolutely necessary to terminate the connection at the pyrometer and at the con- verter. The termination is integrated in the PA pyrometer and is active when delivered from the factory.
Operating manual PA 21, 31, 36 • Select the correct COM port • Set the correct parameters for the serial interface (see chapter transmission of measurement values) • Open the connection User-defined calibration / scaling of the current out- If necessary, the pyrometer can be adjusted with a user-defined calibra- tion function.
Operating manual PA 21, 31, 36 13.1 Calibration/scaling via CellaView To use the user-defined calibration function, activate it first in expert mode. • Start CellaView • Open the menu Settings Extras -> Settings • Select expert mode and activate editable calibration •...
Page 51
Operating manual PA 21, 31, 36 applies to data acquisition parameters and input/output settings. Use keys "B", "C" and "D" for direct access to enable the adjustments. If you make a mistake while making the adjustments, simply enter off- set=0.0 und factor=1.0, or set User Cal. to „off“. Command "A"...
Operating manual PA 21, 31, 36 Shielding and Grounding 14.1 Potential equalisation Caution: All applicable laws and codes must be complied with at all times. The pyrometer housing is connected to the shielding via the cable connector! Differences in ground potentials might cause an equalis- ing current to flow between devices through a cable shielded at both ends.
Page 53
Operating manual PA 21, 31, 36 Pyrometer PA Shielded cable Shield clamp Interference voltage To avoid an equalising current, the pyrometer can be mounted elec- trically insulated. The shielding must be connected to the plant’s earthing system. Caution: If the pyrometer is installed without an insulator and without potential equalisation, the interference voltage may not ex- ceed 48V.
Operating manual PA 21, 31, 36 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.
Operating manual PA 21, 31, 36 Most burning, annealing and hardening furnaces emit a radiation of near- ly '1' which corresponds to the conditions of a black body if the aperture through which the measurement is made is relatively small. 16.3 Measurements of Real Radiators Real radiation sources are characterized by the relation of the emitted...
Operating manual PA 21, 31, 36 Emissivity Coefficient Table PA 21 – PA 36 16.4 List of emissivity coefficients of different materials in % CellaTemp PA 21 PA 31/ PA 36 Wavelength 1.1 – 1.7 m 0.8 – 1.1 m "Black Body"...
Operating manual PA 21, 31, 36 Maintenance 17.1 Cleaning the pyrometer lens A false temperature reading will be given when the lens is dirty. There- fore check the lens periodically and clean it, if necessary. Dust can be removed by simply blowing it away or by using a soft brush. A special lens cleaning cloth is ideal, but any soft, clean, lint-free cloth will be suitable.
Operating manual PA 21, 31, 36 18.1 Field of View Diagrams for PA 21 18.1.1 PA 21 AF 11 (Standard lens PA 41.01 M30) PA 41.05 (0,12 m - ∞) Messfleckdurchmesser [mm] D = 180:1 Messabstand [m]...
Operating manual PA 21, 31, 36 18.1.2 PA 21 AF 21 (Standard lens PA 41.05 M16) Target diameter [mm] PA 41.05 (0.12 m - ∞) D = 100:1 Target distance [m] 18.1.3 PA 21 AF 22 (Close up lens PZ 41.18 M16) PZ 41.18 (0.033 –...
Operating manual PA 21, 31, 36 19.1 Field of View Diagrams for PA 31 19.1.1 PA 31 AF 11 (Standard lens PA 41.01 M30) Target diameter [mm] PA 41.01 (0.2 m - ∞) D = 190 :1 Target distance [m]...
Operating manual PA 21, 31, 36 19.1.2 PA 31 AF 21 (Standard lens PA 41.05 M16) Target diameter [mm] PA 41.05 (0.12 m - ∞ D = 100:1 Target distance [m] 19.1.3 PA 31 AF 22 (Close up lens PZ 41.18 M16) PZ 41.18 (0.033 –...
Operating manual PA 21, 31, 36 20.1 Field of View Diagrams for PA 36 20.1.1 PA 36 AF 11 (Standard lens PA 41.01 M30) Target diameter [mm] PA 41.01 (0.2 m - ∞) D = 190 :1 Target distance [m]...
Operating manual PA 21, 31, 36 20.1.2 PA 36 AF 21 (Standard lens PA 41.05 M16) Target diameter [mm] PA 41.05 (0.12 m - ∞) D = 100:1 Target distance [m] 20.1.3 PA 36 AF 22 (Close up lens PZ 41.18 M16) PZ 41.18 (0.033 –...
Operating manual PA 21, 31, 36 Dimensions 21.1 Electronic part 187 mm Ø62,75 mm M65x2 72 mm 42 mm 132 mm 165 mm 21.2 Fibre optic head M 30 72 mm 35 mm...
Operating manual PA 21, 31, 36 Transmission values of protective glasses In the table you find the transmission values of the used protective glasses. In the column types you find the mechanical accessories in which the glasses are used. Article number Description Transmission (reflexion) [%] Used in followings...
Operating manual PA 21, 31, 36 Glossary Autoprint After connecting the power supply, the pyrometer automatically begins transmitting measurement data via the serial interface. Print cycle time The cycle time for the temperature data output via the serial interface. Distance to target size ratio Describes the ratio between the pyrometer-to-object distance and the target spot diameter.
Operating manual PA 21, 31, 36 Shipping, Packaging and Disposal 25.1 Inspecting your shipment Unpack and inspect the entire shipment immediately upon receipt to make sure it is complete and undamaged. If the container/package shows visible signs of damage, please refuse the shipment.
Operating manual PA 21, 31, 36 Copyright Portions of avr-libc are Copyright (c) 1999-2007 Keith Gudger, Bjoern Haase, Steinar Haugen, Peter Jansen, Reinhard Jessich, Magnus Johansson, Artur Lipowski, Marek Michalkiewicz, Colin O'Flynn, Bob Paddock, Reiner Patommel, Michael Rickman, Theodore A. Roth, Juergen Schilling, Philip Soeberg, Anatoly Sokolov,...
Operating manual PA 21, 31, 36 C011 27.3 General Functions (configuration layer: Parameter Function Default User settings LED.G Green status LED PILO. Activate laser PIL.T Laser ON-time 2 min TERM. Assign Interface Automatic temperature A.STR. data output Cycle for automatic 0.1 s A.CYC.
Need help?
Do you have a question about the CellaTemp PA 21 and is the answer not in the manual?
Questions and answers