OPERATION MANUAL OPTICAL THERMOMETERS

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1 SITEL Control srl Via Arnesano, Palazzolo Milanese Milano Italia Tel / Fax sitelcontrol@sitelcontrol.it / OPERATION MANUAL OPTICAL THERMOMETERS REDLINE H M GLASS V PO-0.7/F PAGE 1 of 18

2 CONTENTS 1 INTRODUCTION 1.1 Preliminary 1.2 Legend of the safety symbols in the manual 2 GENERAL DESCRIPTION 2.1 Mechanical specifications 2.2 Electrical specifications 2.3 Technical specification M model 2.4 Technical specification H model 2.5 Technical specification GLASS model 3 COMMISSIONING 3.1 Measuring-area 3.2 Fixing method 3.3 Cooling-system 3.4 Power supply and analogue output 3.5 Digital interface 3.6 Optional Laser/Led alignment 4 PROGRAMMING 4.1 Emissivity 4.2 Peak 4.3 Time Avaraging 5 USE SUGGESTIONS 6 MAINTENANCE 6.1 Cleaning 6.2 Air check 6.3 Calibration check 7 RISK ANALYSIS 7.1 Dazzling risk by LASER radiation 8 ACCESSORIES PO-0.7/F PAGE 2 of 18

3 1 INTRODUCTION 1.1 Preliminary The SITEL Control REDLINE fibre optics optical thermometers have been designed and manufactured to operate in an extremely reduced space without affecting their measuring performance, or whenever it is impossible to install a traditional optical thermometer because of too high room-temperatures or strong electro-magnetic interferences. This result has been achieved by coupling the optic measuring-head, having very little dimensions, through a special fibre optics cable to the signal-conditioning electronics, housed in a separate case which can easily be installed far from the measuring-point. Both the measuring-head and the fibre optics have been manufactured with a special technology free of any bonding agent, allowing their operation at room-temperatures up to 450 C. The electronic processing is completely digital and the temperature data are provided through an analogue output (4-20 ma, 2 wire connection system). On request, the instrument can be equipped with a laser/led pointer to ease its correct alignment with the target object. 1.2 Legend of the safety symbols in the manual Attention, danger (ISO 7000, -0434) Attention, laser ray (CEI EN 60825/1) Attention, chemical intoxication risk Power supply both direct and alternate current (IEC 60417, -5033) Ground terminal (IEC 60417, -5017) PO-0.7/F PAGE 3 of 18

4 2 - GENERAL DESCRIPTION 2.1 Mechanical specifications The measuring-head is manufactured in stainless-steel suitable for aggressive environments; it is absolutely watertight for hydrostatic heads up to a pressure of 1 meter water-column. The fibre optics cable too is protected by a stainless-steel sheath. The conditioning-electronics is housed in an aluminium alloy case, protection IP65. Please refer to the following illustration for any dimensions. Illustration 1: dimensions of the optical head and electronics on REDLINE models PO-0.7/F PAGE 4 of 18

5 2.2 Electrical specifications The pyrometer can be powered directly from 2 wire connection system (4/20mA); see the table below. Power supply : voltage = Vcc auto polarity Impedance = from 20 up to 1200 ohm Protection : Analogue output : IP ma 2 wire connection system Laser power supply: 9-24 Vcc or 6-18 Vca (any polarity) Illustration 2: Connections to the connector, connections side ( M, H and GLASS models) Connections to the connector Pin Programmed analogue output (standard) 1 Laser pointer (optional) 2 Laser pointer (optional) 3 Current loop 4 Current loop 5 Ground PO-0.7/F PAGE 5 of 18

6 2.3 Technical specifications M model The following figures refer to the catalogue s standard models and many of them, for example the measuring-range or the optical specifications, may be varied to suit all particular needs. If necessary, please contact our sales department. Measuring range : Measure-spectrum: Response-time: Min. operation distance: C (other ranges available on request) 1.6μm From 20mS up to 20 Seconds 250 mm (standard optics), 100mm (close up optics) Distance/target ratio: 50:1 or 75:1 Fibre optics length: 3.3 m (up to 10 m on request) Target emissivity: % (adjustable) Accuracy: 1% +/- 1 C Repeatability: 0.5% +/- 1 C Reference temperature: 23 C Room-temperature: 0 50 C electronics C optical head and fibre (0 450 C on request) Thermal drift: 0.2 C/room C Analogue output: standard 4-20 ma, linear on measuring range 2 wire connection system Laser Pointer: optional, 635mn,class 3 Led Pointer: optional,628nm PO-0.7/F PAGE 6 of 18

7 2.4 Technical specifications H model The following figures refer to the catalogue s standard models and many of them, for example the measuring range or the optical specifications, may be varied to suit all particular needs. If necessary, please contact our sale department. Measuring range : Measure-spectrum: Response-time: Min. operation distance: C (other ranges available on request) 1μm From 20mS up to 20 Seconds 250 mm (standard optics), 100mm (close up optics) Distance/target ratio: 50:1 or 75:1 Fibre optics length: 3.3 m (up to 10 m on request) Target emissivity: % (adjustable) Accuracy: 1% +/- 1 C Repeatability: 0.5% +/- 1 C Reference temperature: 23 C Room-temperature: 0 50 C electronics C optical head and fibre (0 450 C on request) Thermal drift: 0.2 C/room C Analogue output: standard 4-20 ma, linear on measuring range 2 wire connection system Laser Pointer: optional, 635mn,class 3 Led Pointer: optional,628nm 2.5 Technical specifications GLASS model PO-0.7/F PAGE 7 of 18

8 The following figures refer to the catalogue s standard models and many of them, for example the measuring range or the optical specifications, may be varied to suit all particular needs. If necessary, please contact our sale department. Measuring range : C (other ranges available on request) Measure-spectrum: Response-time: Min. operation distance: 1μm From 20mS up to 20 Seconds 250 mm (standard optics) Distance/target ratio: 50:1 or 75:1 Fibre optics length: 6.5 meters (up to 10 m on request) Target emissivity: % (adjustable) Accuracy: 1% +/- 1 C Repeatability: 0.5% +/- 1 C Reference temperature: 23 C Room-temperature: 0 50 C electronics C optical head and fibre (0 450 C on request) Thermal drift: 0.2 C/room C Analogue output: standard 4-20 ma, linear on measuring range 2 wire connection system 3 - COMMISSIONING PO-0.7/F PAGE 8 of 18

9 3.1 Measuring area An optical thermometer detects temperatures according to the amount of infrared rays irradiated by the measuring surface. Said surface has a circular shape and a diameter depending on the distance from the pyrometer: as the distance increases, its dimensions will. The measure is proportional to the mean of the temperatures within this area. A ratio is set, different for each pyrometer, between the target distance and said diameter; a 50:1 ratio means that at 1-m distance the target s diameter will be (1000:50) = 20 mm. The ratio depends on how the pyrometer s optics is manufactured and particular instruments for specific values can be supplied. Here below you will find a graphic description of the measuring area increasing as distance increases. Illustration 3: target diameter increase in relation to an increasing distance from the pyrometer Target graph distance (mm) diameter (mm) ( 50:1 ratio) diameter (mm) ( 75:1 ratio) On request at the order, M and H models will be optionally equipped with an integrated laser / Led pointer to ease the pyrometer s pointing on the target object. Please note the following considerations: Below the minimum distance the optics is no longer focused; the use of the instrument under such conditions requires some special precautions, most of all if the measuring object is rather small. Usually it is essential that the measuring area should be a little smaller than the hot object ; if the area is bigger, the pyrometer will average its temperature and the one of the background (erroneously); if both areas have about the same dimensions, then the pointing process will be critic; whilst if the measure target is much smaller than the object, you will obtain a measure with a high sensitivity to the local temperature gradients, since the effect of averaging over the area is not being taken into account. PO-0.7/F PAGE 9 of 18

10 4.2 Fixing method The pyrometer s head is threaded to allow the head to be fixed, as an example, on a flange. The electronics case can be fastened as you prefer, using the two clearance holes accessible by removing the upper cover. Please note the following considerations: DO NOT make any fixing-holes on the pyrometer s head As for the electronics, choose a position as sheltered as possible from heat, vibrations, collisions and dust DO NOT squash the fibre optics by using hose-clamps too tight; the minimum bending radius for the fibre optics is 50 mm DO NOT EVER SEPARATE for any reason the fibre optics from the optical head, nor from the electronics. This can be done only at SITEL Control laboratories, because a complete recalibration of the instrument will then be necessary. It is not possible to do that on site. 3.3 Cooling and air-cleaning system The fitting accessory FT-PG is available on request. It is a fixing flange with a quick coupling and release to the optical head and equipped with an air-cleaning system for the lens and a wall-tube: the cleaning-air will keep the lens free from dust and rubble, which could cause remarkable measure errors if they occluded it even partially. The same air keeps the optical head s temperature at suitable values even in applications with very high room temperatures or radiance. The air range has to be tried out by experimenting, in order to achieve the results described above; the air itself must be clean, free from any oil or humidity trace. If necessary, provide suitable filters. 3.4 Power supply The power supply specifications have already been described at paragraph 2.2. We recommend what follows: Use cable-leads to properly lay the cables and tight them accordingly Connect the ground for the necessary electrical safety and an improvement of the rejection of the instrument to any electromagnetic interferences If the instrument is powered by low direct or alternate voltage, choose the lowest value whenever possible. The instrument can also be powered by a 12 V battery. NOTE: Powering the instrument by very different tensions than those described at paragraph 2.2 of this manual, you will risk to seriously damage the instrument and all its connections. SITEL Control srl will not be directly or indirectly responsible for any damages to people or equipments caused by failing to observe the present warning. PO-0.7/F PAGE 10 of 18

11 3.5 Analogue interface REDLINE is equipped with a 4-20 ma standard analogue interface linear on the instrument s measuring range. It is intended to allow the instrument connection to the suitable analogue inputs of PLC, LED, recorders, industrial PCs by a simple two-wire connection. The use of analogue interfaces requires some precautions and the scrupulous respect of the possible connection schemes. For any further details, please contact SITEL Control technicians. Please consider the following : it is advisable to use a shielded twisted cable as a connection cable, especially if it is very long ; in very noisy environments we suggest to connect a 1 μf filter condenser directly on the input terminals of the receiving instrument ; the current-loop is powered directly by the instrument, so you DO NOT need (in fact it is dangerous) any series connection of external power supplies, differently from the two-wire sensors ; the maximum load allowed is about 1000 ohm; the minimum is 400 ohm. If the connected devices present a much lower impedance (possibly 2.49 ohm), we suggest a series connection of the 470 ohm/2w provided resistor ; Note: Setting the emissivity selectors (see chapter 4) on 12 it is possible to choose a special testing mode for the current-loop: if everything is properly connected and perfectly working, the instrument will supply, on this mode, a constant current of / ma. 3.6 Optional Laser pointer REDLINE could be equipped with an integrated laser pointer to ease the pyrometer s pointing on the target object. Power supply must be separated from the one of 4/20mA current loop. For the features please see 2.2 paragraph. PO-0.7/F PAGE 11 of 18

12 4 - PROGRAMMING REDLINE can adjust the material emissivity and insert a peak-decay and time avarage mode for stand alone applications. The adjusting process takes places through 4 decays rotary changers accessible by removing the cover of the instrument s case. Also, four configuration jumpers are present; Jumper nr 1 allows to select the two modes of the peak decay function. Jumpers JP2, JP3 and JP4 are reserved for future functions implementation, and should be left open. Illustration 4: drives for the adjustment of emissivity, peak and time average on REDLINE thermometers 4.1 Emissivity We would like to remind you that the emissivity of a body can be defined as the ratio between the radiation emitted by the surface of the body itself and the one emitted by an ideal black body at the same temperature. Figures range from 0 (ideal mirror) to 100% (ideal black body) and depend on various characteristics like the kind of material, surface roughness, positioning-angle between pyrometer and surface. PO-0.7/F PAGE 12 of 18

13 METALS MATERIAL REDLINE H and M ALUMINUM CHROME COBALT 0,13 0,40 0,45 0,75 0,32 0,70 COPPER 0,08 0,85 GOLD 0,05 IRON & STEEL LEAD MAGNESIUM MOLYBDENUM 0,35 0,85 0,35 0,85 0,28 0,75 0,33 0,80 NICKEL 0,35 0,85 PLATINUM 0,27 SILVER TIN TITANIUM ZINC ALLOYS 0,05 0,10 0,40 0,60 0,55 0,80 0,50 0,60 BRASS INCONEL MATERIAL CHROMEL-ALUMEL NICKELCHROME REDLINE H and M 0,3 0,70 0,3 0,85 0,3 0,80 0,3 0,85 PO-0.7/F PAGE 13 of 18

14 REFRACTORY MATERIAL MATERIAL REDLINE H and M ALUMINA 0,90 BRICK RED 0,80 REFR. WHITE 0,30 SILICATE 0,55 SILLIMANITE 0,60 CERAMICS 0,40 MISCELLANEOUS MATERIAL REDLINE H and M AMIANTITE 0,90 ASPHALT 0,85 COAL GRAPHITE CARBON-BLACK 0,85 0,95 CEMENT & CONCRETE 0,65 FABRIC 0,75 PAPER SOLID GLASS (20 mm Thick) (0,80 MOLTEN GLASS REDLINE GLASS 092 0,96 PO-0.7/F PAGE 14 of 18

15 4.2 Peak decay This function can be deactivated by turning it rotary changers on [0]. The operation mode will be changed: the pyrometer detects in real time the temperature increase, whilst at any temperature decrease the measure will be only decreased by the programmed decreasingratio. This is useful to settle the measure of periodically obscured objects or in case of discontinuity in the measuring materials Decay value in C/s for the peak function Rotary switch 0 Peak function excluded 1 1 C/s 2 2 C/s 3 4 C/s 4 8 C/s 5 16 C/s 6 32 C/s 7 64 C/s C/s C/s It is possible to set two different working modes for peak function, using configuration jumper JP1, sited just on the right side of the rotary switches (see illustration 4) 1) Jumper out: the decay continues only if the temperature of the object under measure is above of the value of the bottom range of the instrument; if not the under range condition is immediately set. 2) Jumper in: the decay continues until the value of the bottom range of the instrument is reached, even if the temperature of the object under measure is fallen below that value, or even if the object is no more in the measurement target of the instrument. PO-0.7/F PAGE 15 of 18

16 4.3 Time averaging This function is necessary to decries noise on temperature reading during the process. This noise could be mechanical vibration of material, nonuniform material, water vapour etc. Rotary switch Time averaging value in ms 0 20 ms 1 50 ms ms ms ms ms (1 s) ms (2 s) ms (5 s) ms (10 s) ms (20 s) Time avaraging function 5 - USE SUGGESTION SITEL Control technicians are at your disposal to examine any possible applications, even the most unusual ones. The long established experience and many years of practice, allows us to cope with any installation exigencies. Please feel free to contact us. PO-0.7/F PAGE 16 of 18

17 6 - MAINTENANCE 6.1 Cleaning An optic thermometer sees the object through its front-lens: if this is dirty, wet or scratched, the thermometer can no longer measure. Therefore it is necessary to check periodically the lens and clean it when necessary. The lens is made up of optic glass, so you will need a contact-lens type detergent. 6.2 Air check The cleaning- cooling-air must be always dry and clean, therefore it is necessary to check the filter periodically and replace it if necessary. 6.3 Calibration check It is possible to check the calibration only by using the proper sophisticated instruments, therefore only at SITEL Control laboratories. Usually a calibration check is not necessary because of the tested stability of the instrument s components and sensors; nevertheless after long operation periods it may be necessary to recalibrate it, especially because of the possible mechanical degrading of the optical external parts. 7 - RISK ANALYSIS REDLINE instruments have been designed to comply with the usual safety norms, and when used properly, they do not present any risk for the operators. We recommend not to use this instrument for any purpose different from the one it was designed for. REDLINE has not been designed for any applications in which a malfunction may cause heavy risks for human life or heavy economic and/or environmental damage as well. Here below we remind you the only notice to pay attention to. 7.1 Dazzling risk by LASER radiation If the REDLINE pyrometer is equipped with the optional LASER pointer which eases the pointing on the target object, do not ever stare into the LASER beam with naked eyes, nor through any optical instrument. This could cause serious lesions to your eyes 3A LASER 670 nm according to CEI 76/2 classification CEI EN norm 60825/1 PO-0.7/F PAGE 17 of 18

18 8 ACCESSORIES REDLINE instruments have been designed for the best operation versatility, integrating in each instrument the most common processing functions. The following digital LED are available at SITEL Control; they are perfectly compatible with REDLINE and very useful in case you need to visualise the temperature on a remote panel. 1. SA-2W 4+1 Digital indicator LED - Two alarm levels, relay output - Power supply to the connected thermometer - Process functions (peak, averaging, threshold and others) - Programmable analogue and serial RS485 output - 4. FT-PG Fixing system with flange, cleaning-air and wall-tube, can be connected to the REDLINE optical heads by a quick coupling allowing a quick and safe installation on furnaces, machines, etc. PO-0.7/F PAGE 18 of 18

Model PM-616 Two-Color Pyrometer Operator s Manual Revision 1.2

Model PM-616 Two-Color Pyrometer Operator s Manual Revision 1.2 Logika Technologies Inc. 2857 Sherwood Heights Dr. Unit 2 Oakville ON, CanadaL6J 7J9 Tel: 905-829-5841 www.logikatech.com Logika Technologies