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Summary of Contents for RayTek MARATHON FA
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Page 1: Operating Instructions
MARATHON FA/FR Series 1-Color Fiber Optic Thermometer 2-Color Fiber Optic Thermometer Operating Instructions Rev. G 01/2010 53001... - Page 3 Worldwide Headquarters Santa Cruz, CA USA Tel: +1 800 227 – 8074 (USA and Canada only) +1 831 458 – 3900 Fax: +1 831 458 – 1239 solutions@raytek.com European Headquarters Berlin, Germany Tel: +49 30 4 78 00 80 raytek@raytek.de Fluke Service Center Beijing, China Tel: +86 10 6438 691 Tel: +86 10 4008103435 (Service) info@raytek.com.cn Internet: http://www.raytek.com/ Thank you for purchasing this Raytek product. Register today at www.raytek.com/register to receive the latest updates, enhancements and software upgrades! © Raytek Corporation Raytek and the Raytek Logo are registered trademarks of Raytek Corporation. All rights reserved. Specifications subject to change without notice. Contacts France info@raytek.fr ...
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Page 4: Software Warranty
The manufacturer warrants this instrument to be free from defects in material and workmanship under normal use and service for the period of two years from date of purchase. This warranty extends only to the original purchaser. This warranty shall not apply to fuses, batteries, or any product that has been subject to misuse, neglect, accident, or abnormal conditions of operation. ... -
Page 5: Table Of Contents
1 SAFETY INSTRUCTIONS...1 2 PRODUCT DESCRIPTION ...2 2.1 T HEORY OF PERATION FOR 2.1.1 Partially Obscured Targets ...3 2.1.2 Targets Smaller Than Field of View ...3 2.1.3 Low or Changing Emissivities ...3 3 TECHNICAL DATA...4 3.1 M EASUREMENT PECIFICATIONS 3.1.1 FA Models ...4 3.1.2 FR Models ...4 3.2 G ENERAL PECIFICATIONS 3.3 E LECTRICAL PECIFICATIONS 3.4 D ...7 IMENSIONS 3.5 O PTICAL PECIFICATIONS 3.5.1 FA Models ...9 3.5.1.1 Standard Focus ...9 3.5.1.2 Close Focus ...10 3.5.2 FR Models ...11 3.5.2.1 Standard Focus ...11 3.5.2.2 Close Focus ...12 3.6 S... - Page 6 6 OPERATION... 25 6.1 C ... 25 ONTROL ANEL 6.2 O ... 26 PERATION ODES 6.2.1 Temperature Display ... 27 6.2.2 Emissivity (1‐Color) ... 27 6.2.3 Slope (2‐Color)... 27 6.2.4 2C/1C Switch... 28 6.2.5 Peak Hold (PKH) ... 28 6.2.6 Averaging (AVG) ... 28 6.2.7 Valley Hold (VAL)... 29 6.2.8 Overview to Hold Functions ... 29 6.2.9 Setpoints ... 30 6.2.10 Deadband ... 30 6.2.11 Ambient Background Temperature Compensation (FA Models) ... 31 6.3 I ...
- Page 7 10.4.2.1 Attaching the Fiber Optic Cable to the Optical Head ...51 10.4.2.2 Attaching the Fiber Optic Cable to the Electronics Housing ...51 10.4.3 Fiber Calibration ...52 11 APPENDIX ...54 11.1 D ETERMINATION OF MISSIVITY 11.2 T YPICAL MISSIVITY ALUES 11.3 T ...56 YPICAL LOPES 11.4 S (FR M IGNAL EDUCTION 11.5 A TTENUATION NFLUENCE ON 11.6 T RACEABILITY OF NSTRUMENT ...54 ...54 )...57 ODELS ...58 CCURACY ...59 ALIBRATION...
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Page 9: Safety Instructions
1 Safety Instructions This document contains important information, which should be kept at all times with the instrument during its operational life. Other users of this instrument should be given these instructions with the instrument. Eventual updates to this information must be added to the original document. The instrument can only be operated by trained personnel in accordance with these instructions and local safety regulations. Acceptable Operation This instrument is intended only for the measurement of temperature. The instrument is appropriate for continuous use. The instrument operates reliably in demanding conditions, such as in high environmental temperatures, as long as the documented technical specifications for all instrument components ... -
Page 10: Product Description
Product Description 2 Product Description The Marathon FA/FR fiber optic series of instruments are high‐performance infrared thermometers. Each has a front end consisting of a small, fixed focus optical head coupled to a rugged fiber optic cable wrapped with a flexible stainless steel sheath. The fiber optic cable attaches to an electronics enclosure, which can be mounted away from the hot, hostile environment. The electronics enclosure ... -
Page 11: Partially Obscured Targets
Another benefit is that 2‐color sensors measure closer to the highest temperature within the measured spot (spatial peak picking) instead of an average temperature. A 2‐color sensor can be mounted farther away, even if the target does not fill the resulting spot size. The convenience is that you are not forced to install the sensor at some specific distance based upon target size and the sensor’s optical resolution. 2.1.1 Partially Obscured Targets The radiated energy from a target is, in most cases, equally reduced when objects or atmospheric materials block some portion of the optical field of view. It follows that the ratio of the energies is unaffected, and thus the measured temperatures remain accurate. A 2‐color sensor is better than a 1‐... -
Page 12: Technical Data
Technical Data 3 Technical Data 3.1 Measurement Specifications 3.1.1 FA Models Temperature Range FA1A FA1B FA1C FA1G FA2A FA2B Spectral Response FA1 FA2 System Accuracy FA1/FA2 FA1G Repeatability Temperature Resolution Current Output Display and RS485 Response Time Temperature Coefficient Noise Equivalent Temp. (NET) Emissivity Signal Processing 3.1.2 FR Models Temperature Range FR1A FR1B FR1C Spectral Response at ambient temperature 23°C ±5°C (73°F ±9°F) 4 475 to 900°C (887°F to 1652°F) 800 to 1900°C (1472°F to 3452°F) 1200 to 3000°C (2192°F to 5432°F) 750 to 1675°C (1382°F to 3047°F) ... -
Page 13: General Specifications
System Accuracy no signal attenuation up to 95% signal attenuation up to 95% signal attenuation Repeatability Temperature Resolution Response Time Temperature Coefficient Emissivity (1‐color) Slope (2‐color) Max. Signal Reduction Signal Processing 3.2 General Specifications Display Environmental Rating Ambient Temperature Head / Fiber Cable Electronics Housing Storage Temperature Electronics Housing Fiber Cable Relative Humidity Electromagnetic Interference Mechanical Shock Electronics Housing Vibrations Electronics Housing at ambient temperature 23°C ±5°C (73°F ±9°F) Marathon Series FA/FR ±(0.3% T + 2°C) meas * ±(1% T + 2°C) for FR1A/FR1B meas * ±(1.3% T + 2°C) for FR1C ... -
Page 14: Electrical Specifications
Technical Data Warm up Period Weight Optical Head Electronics Housing 3.3 Electrical Specifications Power Supply Power Consumption Output Isolation Dielectric Withstand Voltage Outputs Analog Digital RS485 Relay Input External Reset 6 15 minutes 100 g (3.5 oz) 710 g (9 oz) 24 VDC ±20%, 500 mA (max 100 mV peak to peak of ripple) max. 12 W 500 V AC or DC provided by manufacturer supplied power supply accessory 500 V 0 ‐ 20 mA, 4 ‐ 20 mA, 16 bit resolution max current loop impedance: 500 Ω networkable to 32 sensors Baud rate: 300, 1200, 2400, 9600, 19200, 38400 (default) Adjustable baud rate only available through 2‐way RS485. Data format: 8 bit, no parity, 1 stop bit, Software selectable 4‐wire, full‐duplex non‐multidrop, point‐to‐ point or 2‐wire half duplex multidrop Contacts max. 48 V, 300 mA, response time < 2 ms, (software programmable) TTL input, trigger for resetting peak or valley hold Sensor Trigger Figure 1: External Reset Wiring Diagram Marathon Series FA/FR... -
Page 15: Dimensions
3.4 Dimensions Fiber Optic Cable min. bend radius Figure 2: Dimensions of Optical Head(FA Models) Fiber Optic Cable min. bend radius Figure 3: Dimensions of Optical Head (FR Models) Mounting hole ∅ 5 mm (0.188) Max. fastener head 8 mm (0.31) Hole diameter: 21 mm (0.83) Figure 4: Dimensions of Electronics Housing Marathon Series FA/FR Technical Data ... - Page 16 Technical Data Figure 5: Adjustable Mounting Bracket for Optical Head 8 Marathon Series FA/FR...
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Page 17: Optical Specifications
3.5 Optical Specifications The sensor comes as a standard focus model or one of two close focus models, see following overview for available options. For one‐color temperature measurements make sure the target completely fills the measurement spot. 3.5.1 FA Models 3.5.1.1 Standard Focus Distancse D to Object [mm] D:S = 20:1 at focus point Figure 6: Standard Focus Spot Size Charts for FA models Marathon Series FA/FR [inch] FA1A/FA2A SF Distance D to Object [mm] D:S = 100:1 at focus point Distance D to Object [mm] D:S = 40:1 at focus point Technical Data [inch] FA1B/FA1C/FA1G SF... -
Page 18: Close Focus
Technical Data 3.5.1.2 Close Focus Distance D to Object [mm] D:S = 20:1 at focus point Distance D to Object [mm] D:S = 100:1 at focus point Distance D to Object [mm] D:S = 40:1 at focus point Figure 7: Close Focus Spot Size Charts for FA models 10 [inch] FA1A/FA2A CF1 Distance D to Object [mm] D:S = 20:1 at focus point [inch]... -
Page 19: Fr Models
3.5.2 FR Models 3.5.2.1 Standard Focus Distance D to Object [mm] D:S = 20:1 at focus point Figure 8: Standard Focus Spot Size Charts for FR models Marathon Series FA/FR [inch] FR1A SF Distance D to Object [mm] D:S = 40:1 at focus point Distance D to Object [mm] D:S = 65:1 at focus point Technical Data [inch] FR1B SF... -
Page 20: Close Focus
Technical Data 3.5.2.2 Close Focus Distance D to Object [mm] D:S = 20:1 at focus point Distance D to Object [mm] D:S = 40:1 at focus point Distance D to Object [mm] D:S = 65:1 at focus point Figure 9: Close Focus Spot Size Charts for FR models 3.6 Scope of Delivery The scope of delivery includes the following: • Marathon FA/FR Documentation and Support CD •... -
Page 21: Sensor Location
4 Sensor Location Sensor location and configuration depends on the application. Before deciding on a location, you need to be aware of the ambient temperature of the location, the atmospheric quality of the location (especially for 1‐color temperature measurements), and the possible electromagnetic interference in that location (a consideration only for the electronics enclosure). If you plan to use air purging, you need to have an air connection available. Also, wiring and conduit runs must be considered, including ... -
Page 22: Sensor Placement (1-Color Mode )
Sensor Location 4.5 Sensor Placement (1‐Color Mode) Optical head placement for one‐color temperature measurements is more critical than two‐color measurements. The sensor must have a clear view of the target. There can be no obstructions on the lens, window, or in the atmosphere. The distance from the target can be anywhere beyond the minimum requirements, as long as the target completely fills the field of view. The following figure illustrates proper placement when using the one‐color mode. best good incorrect Target greater than spot size Target equal to spot size ... -
Page 23: Viewing Angles
Sighting hole smaller than the Figure 11: Sensor Placement in 2‐Color Mode 4.7 Viewing Angles The optical head can be placed at any angle from the target up to 30° for one‐color mode, or 45° for two‐color mode. Marathon Series FA/FR sensor’s field of view Dirty lens or dirty sighting window Smoke, steam, dust, gas in atmosphere Sensor Location Emitted energy Emitted energy Emitted energy Target smaller than field of view and/or moves or vibrates in and out of field of view (e.g. - Page 24 Sensor Location Best 90° to target Good 1-Color Mode: 30° to 90° to target 2-Color Mode: 45° to 90° to target 1-Color Mode: 0° to 30° to target 2-Color Mode: 0° to 45° to target Figure 12: Acceptable Sensor Viewing Angles 16 Acceptable Angles Marathon Series FA/FR ...
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Page 25: Installation
5 Installation 5.1 Mounting the Sensor After all preparations are complete according to section 4 Sensor Location, page 13 ff., you can install the sensor. How and where you anchor the optical head and electronics enclosure depends on the type of surface and the type of bracket you are using. You can mount the optical head through a hole, on a bracket of your own design, or on the available bracket accessory. You may need to “snake” the fiber optic cable through and around any obstacles, such as beams, walls, support columns, etc., or, if your installation requires, through conduit, before attaching the end to the electronics enclosure. (Do not attach until you aim the optical head.) The cable can be disconnected ... -
Page 26: Aiming
Installation 5.2 Aiming An effective aiming technique is to adjust the head until the highest reading is observed on the internal display. When the highest reading is reached, hold the unit in place and secure the mounting base. Make sure that the sensor is in 1‐color mode when using this aiming technique! Another aiming can be done by means of a battery powered aiming light. Simply loosen the compression sleeve holding the fiber optic cable, loosen the screw at the heater block, and pull the cable out of the heater block approximately 7 mm (0.25 in), see Figure 13, p. 17. Raise the fiber optic ... -
Page 27: Installing The Electronics Housing
5.4 Installing the Electronics Housing The distance between the electronics housing and a computer (via RS485 cable) can be up to 1200 m (4000 feet). This allows ample distance from the harsh environment where the sensing head is mounted to a control room or pulpit where the computer is located. For reliable performance it is recommended that the power supply be no more than 60 m (200 feet) away! Following you can see installation examples shown with two representative cable types. A 4‐wire cable is used to wire the 24 VDC power supply and one output of the electronics housing. A coated ... - Page 28 Installation 12-wire cable +24V (red) GND (black) TxA (purple) TxB (grey) RxA (black) RxB (white) Attention: Do not confuse twisted pair black wire with single black power wire twisted cable pairs Incorrect wiring can damage the sensor and void the warranty! Before applying power, make sure all connections are correct and secure! The following figure illustrates how to remove the terminal block. The electronics box has two compression fittings to provide water sealing for the fiber optics cable and the electronics cable. The compression fitting must be tightened with a wrench around the cables to achieve water sealing. To achieve sealing for the fiber optics cable, hand tighten the compression fitting around the cable, and then use a wrench to tighten another 1 1/2 to 2 turns. If the cable is too ...
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Page 29: Power Supply
5.5 Power Supply Connections from a 24 VDC (500 mA or higher) power supply attach to the appropriate terminals on the electronic enclosure’s terminal strip. Isolated power is required, and this is provided by the appropriate manufacturer supplied power supply accessory. Beware of use of other power supplies which may not provide the necessary isolation and could cause instrument malfunction or damage! 5.6 RS232/485 Interface Converter To connect to a computer’s RS232 port, you need one of the Interface Converter accessories (similar to the following figure) and the proper RS232 cable. If your computer has an RS485 interface card, you can connect the sensor directly to its port (using the proper connector) with wiring from the electronic enclosure’s terminal block. Connect the interface converter to an available COM port on your computer, either directly or with an appropriate serial cable (available from computer supply stores). If your computer has a 9‐pin serial connector, use the supplied 25‐pin to 9‐pin cable between the interface converter or cable and the computer. ... -
Page 30: Multidrop Installation (4-Wire)
Installation 2. Install all electronics wiring according to the applicable sections 5.4, 5.7.x, and 5.8! 3. Plug the RS485/RS232 interface converter into your computer’s serial port, or attach it to a serial cable connected to the computer! Use 9 pin to 25 pin converter if necessary! 4. If the 9 VDC power supply is used, apply power to the RS485/RS232 converter! 5. Apply power to the FA/FR sensor! 6. Turn on your computer! You need to make sure another serial device (e.g. an internal modem) is not using the identical COM‐port at the same time! Always make all electrical connections before applying power to the FA/FR sensor! Do not change RS485 or power connections on the RS485/RS232 converter while the FA/FR sensor has power applied, as this may cause damage to the Interface converter! 5.7.1 Multidrop Installation (4‐Wire) In 4‐wire multidrop installations the data can be transferred in both directions, from sensor to PC and reverse. To Computer RS232 serial port 9 VDC power supply or ... -
Page 31: Connecting To Terminal Block
To Computer RS232 serial port 9 VDC power supply or ... Figure 19: Wiring for 2‐Wire Sensor Setup 5.7.3 Connecting to Terminal Block If you need to extend the wiring or to have a complete wiring of all inputs/outputs, use the Terminal Block accessory. Make sure you connect the color‐coded wires correctly. Interface Converter To Computer RS232 serial port 9 VDC power supply or 24 VDC power supply Figure 20: Connections from Sensor to Computer with the Terminal Block Marathon Series FA/FR RS232/485 Interface Converter XXX485CVT… from TxB from TxA Ground +24 VDC (optional) -
Page 32: Installing Of Multiple Sensors In A Network
Installation 5.8 Installing of Multiple Sensors in a Network 5.8.1 Wiring For an installation of two or more sensors in a network, each sensor cable is wired to its own terminal block. The RS485 terminals on each terminal block are wired in parallel. The following figure illustrates the wiring of sensors in a 4‐wire multidrop installation. A network as a 2‐wire multidrop installation is to realize according to Figure 19, p. 23. RS232/485 Interface Converter XXX485CVT… from RxB from RxA from TxB from TxA Ground +24 VDC 9 VDC or ... 24 VDC power supply Figure 21: 4‐Wire Multidrop Wiring in a Network 5.8.2 Addressing The addressing of a sensor can be done by means of the Multidrop Software (Menu <Sensor Setup>) that came with your sensor. As alternative the specific interface commands of the sensor can be used in conjunction with a standard terminal program (e.g. Windows HyperTerminal), see section 9.5 Command List, p. 42. ... -
Page 33: Operation
6 Operation Once you have the optical head and electronics housing positioned and connected properly, the system is ready for continuous operation. The operation of the sensor can be done by means of the control panel in the electronics housing or by means of the software that came with your sensor. 6.1 Control Panel The sensor is equipped with a control panel, which has setting/controlling buttons and an LED display. You can configure sensor settings with the control panel or with a computer. The panel is used ... -
Page 34: Operation Modes
Operation The sensor has a remote locking feature that keeps the unit from being accidentally changed from the control panel (locked by default in multidrop mode). This lockout mode denies access to all the switches on the control panel. It is available through the RS485 connection and can be unlocked only by a command from the remote computer. 6.2 Operation Modes When you first turn the unit on, the display shows the current temperature. Pushing the mode selector button will change the figures on the display to the current setting for each particular mode. The following figure illustrates the sequence of operation for the mode selector button when in current temperature mode. ... -
Page 35: Temperature Display
Display current temperature Display/Change emissivity (1-color mode) default: 1.00 Display/Change slope (2-color mode) default: 1.000 Display/Change peak hold setting default = 0 sec / off Display/Change averaging setting default = 0 sec / off Figure 25: Mode Selector Button Sequence (FR Models) 6.2.1 Temperature Display The temperature display can be set for either °C or °F by pressing the C/F selector button ( – up arrow), ... -
Page 36: 2C/1C Switch
Operation The slope is the deciding parameter for measurements in 2‐color mode! The emissivity affects only measurements in 1‐color mode. For information on determining an unknown slope, and for sample slopes, refer to section 11.3 Typical Slopes, p. 56. To change the unit’s slope setting, complete the following: 1. Make sure the 2C LED is lit. 2. Press the Mode button until the Є LED is lit. The current slope value shows on the display. 3. Press the or button to change the value. 4. Press the Mode button several times until the C or F LED is lit. The displayed temperature will now be based on the new slope value. 6.2.4 2C/1C Switch To switch between 2‐color and 1‐color temperature measurement push the 2C/1C selector button. A lit LED indicates the active measurement method. Switching affects the LED display and analog out but not the RS485 out. 6.2.5 Peak Hold (PKH) With Peak Hold, the respective last peak value is held for the duration of Hold Time. To set and activate Peak Hold, do the following: ... -
Page 37: Valley Hold (Val)
Hot objects moving on a production line To set and activate Averaging, do the following: 1. Press the Mode button until the AVG LED is lit. 2. Press the button to both set and activate. The display reads in 0.1 seconds. Set Average anywhere from 0.1 to 300.0 seconds. If Average is set to 0.0 seconds, the function is deactivated. ... -
Page 38: Setpoints
Operation Peak Hold with decay timer Advanced Peak Hold trigger or threshold Advanced Peak Hold timer or threshold Advanced Peak Hold with timer or decay threshold Valley Hold*** timer Valley Hold*** trigger Valley Hold with decay*** timer Advanced Valley Hold*** trigger or threshold Advanced Valley Hold***... -
Page 39: Ambient Background Temperature Compensation (Fa Models)
Time Normal State 6.2.11 Ambient Background Temperature Compensation (FA Models) The FA model is capable of improving the accuracy of target temperature measurements by taking into account the ambient, or background, temperature. This feature is useful when the target emissivity is below 1.0 and the background temperature is not significantly lower than the target temperature. ... -
Page 40: Factory Defaults
Operation 6.4 Factory Defaults To globally reset the unit to its factory default settings, press the and buttons at the same time for approximately 2 seconds. The baud rate will not change from the last value when this is done. Parameter FA (1-color unit) Display mode °C, TEMP- Display Emissivity 1.00 Slope 0.0 s 0.0 s 0.0 s Baud rate 38400 Relay alarm output controlled by unit Current Output 4 – 20 mA Temperature setting for 4 mA FA1A: FA1B: FA1C:... -
Page 41: Options
7 Options Options are items that are factory installed and must be specified at time of order. The following are available: • Fiber optic cable lengths: 1, 3, 6, 10 m (3, 10, 20, 33 ft), 22 m (72 ft) for selected models • ISO Calibration Certificate, based on NIST/DKD certified probes (XXXFR1CERT) • High Temperature Fiber Cable (…H), rated to 315°C (600°F), not available on FA2 models • Laser Sighting (…L) only on FA1A/FA2A and FR1A/FR1B models • Cooling Platform for Electronics Housing (...W) The High Temperature Fiber Cable excludes Viton coating and IP65 (NEMA‐4) rating! 7.1 Cooling Platform for Electronics Housing The cooling platform for the electronics housing can be used for ambient temperatures up to 150°C (302°F). For an efficient cooling a water flow of 2 l (0.53 gallons) per minute is recommended at a water temperature of 16°C (61°F). ... -
Page 42: Accessories
Accessories 8 Accessories 8.1 Overview A full range of accessories for various applications and industrial environments are available. Accessories include items that may be ordered at any time and added on‐site. These include the following: • Air Purge Collar with protection tube for optical head (XXXFOHAPA) • Protection Tube (XXXFOSTCA) • Fitting System • RS232/485 Interface Converter (XXX485CV…) ... -
Page 43: Air Purge Collar
8.2 Air Purge Collar The Air Purge Collar accessory is used to keep dust, moisture, airborne particles, and vapors away from the optical headʹs lens. It can be installed before or after the bracket. It must be screwed in fully. Air flows into the 1/8” NPT fitting and out the front aperture. Air flow should be a maximum of 0.5 ‐ 1.5 liters/sec (1 ‐ 3 cfm). Clean (filtered) or “instrument” air is recommended to avoid contaminants from settling on the lens. Do not use chilled air below 10°C (50°F). Also provided is a stainless steel protection tube, 150 mm (6 inches) long by 25 mm (1 inch) diameter that threads onto the front of the air purge collar. Figure 31: Air Purge Collar and Protection Tube (XXXFOHAPA) 8.3 Protection Tube The ... -
Page 44: Fitting System
Accessories 8.4 Fitting System Flexible accessory selections allow you to pick and choose the accessories you need. Part number XXXFORFQP XXXFORFAP XXXFORFMF XXXFORFMC Figure 34: Dimension for 4‐Bolt Mounting Flange 36 Item 1 Stainless steel air purge with quick release fitting and Sapphire window Air connector: ¼“ NPT Item 2 Stainless steel tube 203 mm (8 in) Item 3 Stainless steel Item 4 Stainless steel ... -
Page 45: Rs232/485 Interface Converter
8.5 RS232/485 Interface Converter The RS232/485 interface converters have built‐in smart switching and have been designed to be fast, allowing for use in either 2‐wire or 4‐wire mode, in either multi‐drop or stand‐alone mode. The RS232/485 interface converter is required for multi‐drop communications. Do not use other commercially available converters, they do not have the necessary features! Order number XXX485CVT XXX485CVT1 XXX485CVT2 XXX485CV XXX485CV1 XXX485CV2 Table 4: Available RS232/485 Interface Converters ... -
Page 46: Industrial Power Supply
Accessories 8.6 Industrial Power Supply The DIN‐rail mount industrial power supply transforms an input voltage of 85 – 264 VAC into an output voltage of 24 VDC / 1.25 A. The power supply provides short circuit and overload protection. To prevent electrical shocks, the power supply must be used in protected environments (cabinets)! Technical data: Protection class Environmental protection Operating temperature range AC Input DC Output Figure 35: Dimension of Industrial Power Supply 38 class II as per IEC/EN 61140 IP20 ‐25°C to 70°C (‐13°F to 158°F) L, N wire size: 0.5 to 2 mm² (AWG 24 to 12) + ‒ wire size: 0.5 to 2 mm² (AWG 24 to 12) Marathon Series FA/FR ... -
Page 47: Programming Guide
9 Programming Guide This section explains the sensor’s communication protocol. Use them when writing custom programs for your applications or when communicating with your sensor with a terminal program. 9.1 Remote versus Manual Considerations Since the sensor includes a local user interface, the possibility exists for a person to make manual changes to parameter settings. To resolve conflicts between inputs to the sensor, it observes the following rules: • Command precedence: the most recent parameter change is valid, whether originating from manual or remote. ... -
Page 48: Transfer Modes
Programming Guide Example: Send E=0.90 instead of E=0.9; send P=001.2 instead of P=1.2 After transmitting one command, the host has to wait for the response from the unit before sending another. A response from the sensor is guaranteed within 4 seconds in Poll mode and 8 seconds in Burst mode at 300 baud. The response is faster at higher baud rates. An asterisk * will be transmitted back to the host in the event of an “illegal” instruction. An illegal instruction is considered to be one of the following: ... -
Page 49: Response Time In Setup Mode
• Sensor Model Type • Sensor Serial Number • Relay Control • Laser status • Setpoints • Deadband • Current Output Mode (0 ‐ 20 mA or 4 ‐ 20 mA) The following items cannot be polled: • Poll/Burst Mode • Baud rate • Relay control • Set current output An example string for command $=UTQEGH<CR> The default string is as follows: C T1250 Q0400.023 E1.00 G005.5 H1400 <CR><LF> 9.4 Response Time in Setup Mode The analog output response time is not guaranteed while a parameter value is being changed or if there is a continuous stream of commands from the host. ... -
Page 50: Command List
Programming Guide 9.5 Command List In depending from the specific commands, the following characters are used: ? ... host (e.g. PC) requests for a parameter value of the unit ! ... unit acknowledges a valid parameter request and responses with the parameter value = ... host forces the unit to set a certain parameter # ... unit informs the host, a parameter was set on the control panel manually * ... unit’s error response Description Char Format (2) Burst string format Ambient radiation correction nnnn (FA only) Measured attenuation Advanced Hold Threshold nnnn Baud rate (5) Emissivity n.nn Valley hold time (FA only) nnn.n Average time (4) nnn.n... - Page 51 Description Char Wide Power Narrow Power (FR only) Slope (FR only) Target temperature FR series: 2-color Temperature unit Poll/Burst mode Target temperature FR series: 2-color wide Burst string contents (5) Multidrop address Low temperature limit Deadband (6) Decay rate Restore factory defaults (8) High temperature limit Sensor initialization Laser (optional)
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Page 52: Command Examples
Programming Guide 9.6 Command Examples HOST Description Query Burst string format 001?$ Show list of commands 001? Measured attenuation 001?B Baud rate Emissivity 001?E Average time 001?G Top of mA range 001?H Sensor internal ambient 001?I Switch panel lock 001?J Relay alarm output control Bottom of mA range 001?L Mode –... -
Page 53: Maintenance
10 Maintenance Our sales representatives and customer service are always at your disposal for questions regarding application assistance, calibration, repair, and solutions to specific problems. Please contact your local sales representative if you need assistance. In many cases, problems can be solved over the telephone. If you need to return equipment for servicing, calibration, or repair, please contact our Service Department before shipping. Phone numbers are listed at the beginning of this document. 10.1 Troubleshooting Minor Problems Symptom Probable Cause No output No power to instrument Erroneous temperature Faulty sensor cable Erroneous temperature Field of view obstruction Erroneous temperature Window lens... -
Page 54: Fail -Safe Operation
Maintenance 10.2 Fail‐Safe Operation The Fail‐Safe system is designed to alert the operator and provide a safe output in case of any system failure. Basically, it is designed to shutdown the process in the event of a set‐up error, system error, or a failure in the sensor electronics. The Fail‐Safe circuit should never be relied on exclusively to protect critical heating processes. Other safety devices should also be used to supplement this function! When an error or failure does occur, the display indicates the possible failure area, and the output circuits automatically adjust to their lowest or highest preset level. The following table shows the values displayed on the LED display and transmitted over the 2‐way interface. ... - Page 55 The relay is controlled by the temperature selected on the display. If any failsafe code appears on the display, the relay changes to the “abnormal” state. The exception is the “dirty window” condition. This causes the relay to change state, leaving a normal numerical temperature output. The dirty window is detected in either 1‐color or 2‐color mode. Error Code no error ECHH ECUU EIHH EIUU EUUU EHHH EAAA...
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Page 56: Cleaning The Lens
Maintenance 10.3 Cleaning the Lens Keep the lens clean at all times. Any foreign matter on the window will affect 1‐color measurement accuracy and may affect two‐color accuracy. However, care should be taken when cleaning the lens. To clean the window, do the following: 1. Lightly blow off loose particles with “canned” air (used for cleaning computer equipment) or a small squeeze bellows (used for cleaning camera lenses). 2. Gently brush off any remaining particles with a soft camel hair brush or a soft lens tissue (available from camera supply stores). 3. Clean remaining “dirt” using a cotton swab or soft lens tissue dampened in distilled water. Do not scratch the surface. ... -
Page 57: Replacing The Fiber Optic Cable
10.4 Replacing the Fiber Optic Cable FA fiber cable assemblies are not field ʺreplaceableʺ without blackbody recalibration! As such, spare FA fiber cable assemblies are not available! If the fiber optic cable ever needs to be removed or replaced, it can be removed from both the optical head and electronics enclosure without demounting them from their brackets. Please be aware of the following when removing or installing cables: • Make sure cable connectors at the sensing head and electronics enclosure are clean before removing and/or replacing the fiber optic cable. • Replacement fiber optic cables of the same length can be recalibrated in the field by using the supplied Fiber Replacement Calibration software. Replacement fiber optic cables of different lengths require recalibration at the factory, or at a factory‐authorized service center. Contact your sales representative for details. Always clean the area around the fiber optic cable connectors before disconnecting. If any contaminants ... -
Page 58: Removing The Fiber Optic Cable From The Electronics Housing
Maintenance Figure 36: Removing the Fiber optic Cable from the Optical Head 10.4.1.2 Removing the Fiber Optic Cable from the Electronics Housing Complete the following steps to disconnect the fiber optic cable from the electronics housing: 1. First loosen the cable connecting sleeve. 2. Loosen the cable receptacle screw to release the cable. 3. Pull cable from electronics enclosure, and immediately place a protective cap over the end of the fiber optic cable. Do not use adhesive tape on the cable end. Figure 37: Removing the Fiber optic Cable from the Electronics Housing 50 Turn 1.3 mm (0.050“) hex wrench counter clockwise until cable is loose Put cable out First loosen cable connecting sleeve Then loosen screw and pull cable from coupling. Marathon Series FA/FR ... -
Page 59: Mounting The Fiber Optic Cable
10.4.2 Mounting the Fiber Optic Cable 10.4.2.1 Attaching the Fiber Optic Cable to the Optical Head Complete the following steps to attach the fiber optic cable to the optical head: 1. The fiber optic cable ferrule has a key slot on its surface. Insert the ferrule into the rear of the optical head. Turn the head until the key on the ferrule’s key slot engages the key pin inside the head. 2. Make sure cable is pushed in all the way before tightening hex screw! Tighten the hex screw with the 1.3 mm (0.050”) hex wrench until snug. Do not over tighten! Figure 38: Attaching the Fiber optic Cable to the Optical Head 10.4.2.2 Attaching the Fiber Optic Cable to the Electronics Housing Complete the following steps to attach the fiber optic cable to the electronics housing: 1. Insert the tip of the fiber optic cable into the mating receptacle on the electronics enclosure. The cable ferrule is keyed and can go in only one way. 2. Push connecting sleeve in until it stops (approx. 15 mm / 0.6 in), see Figure 13, p. 17. 3. Tighten the screw (finger tighten only) on the mating receptacle. 4. Tighten the cable’s compression fitting. Marathon Series FA/FR Key pin inside Key slot Maintenance ... -
Page 60: Fiber Calibration
Maintenance Figure 39: Attaching the Fiber Optic Cable to the Electronics Housing 10.4.3 Fiber Calibration Each replacement fiber optic cable is calibrated at the factory before shipping. The calibration constants are sent along with a label mounted on the cable. So you have to enter them into the appropriate Fiber Calibration software program. This program sends the new calibration constants, through the RS485 connection, to the sensor’s electronics. ... - Page 61 Maintenance Figure 40: Dialog for the Calibration of the Fiber Cable Marathon Series FA/FR ...
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Page 62: Appendix
Appendix 11 Appendix 11.1 Determination of Emissivity Emissivity is a measure of an object’s ability to absorb and emit infrared energy. It can have a value between 0 and 1.0. For example a mirror has an emissivity of 0.1, while the so‐called “Blackbody“ reaches an emissivity value of 1.0. If a higher than actual emissivity value is set, the output will read low, provided the target temperature is above its ambient temperature. For example, if you have set 0.95 and the actual emissivity is 0.9, the temperature reading will be lower than the true temperature. An object’s emissivity can be determined by one of the following methods: 1. Determine the actual temperature of the material using an RTD (PT100), a thermocouple, or any other suitable method. Next, measure the object’s temperature and adjust emissivity setting until the correct temperature value is reached. This is the correct emissivity for the measured material. 2. If possible, apply flat black paint to a portion of the surface of the object. The emissivity of the paint must be above 0.98. Next, measure the temperature of the painted area using an emissivity ... - Page 63 Aluminum unoxidized 0.1-0.2 oxidized roughened 0.2-0.8 polished 0.1-0.2 Brass polished 0.35 Burnished 0.65 Chromium Copper polished 0.05 roughened 0.05-0.2 oxidized 0.2-0.8 Gold Haynes Alloy 0.5-0.9 Inconel oxidized 0.4-0.9 sandblasted 0.3-0.4 electropolished 0.2-0.5 Iron oxidized 0.7-0.9 unoxidized 0.35 rusted 0.35 Table 12: Typical Emissivity Values (Metals) Table 13: Typical Emissivity Values (Non‐Metals) ...
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Page 64: Typical Slopes
Appendix 11.3 Typical Slopes The following slope settings are approximate and will vary depending on the metal alloy and surface finish, as well as the application. These are supplied here as examples. Set the slope to approximately 1.000 for measuring the following metals with oxidized surfaces: • Stainless Steel • Cobalt • Iron • Nickel Set the slope to approximately 1.060 for measuring the following metals with smooth, clean, unoxidized surfaces: • Iron • Nickel • Stainless Steel • Rhodium • Cobalt • Steel • Molybdenum • Platinum Molten iron also has an approximate slope setting of 1.060. How to determine slope? The most effective way to determine and adjust the slope is to take the temperature of the material using a probe sensor such as an RTD, thermocouple, or other suitable method. Once you determine ... -
Page 65: Signal Reduction (Fr Models )
11.4 Signal Reduction (FR Models) The following figures show each sensor model’s typical percentage of allowed signal reduction at all temperatures. Refer to these graphs to estimate what percentage of target area must be visible to the sensor at temperatures below the minimum temperature (95% attenuation). Figure 41: Typical Percentage of Allowed Signal Reduction (FR1A Models) Figure 42: Typical Percentage of Allowed Signal Reduction (FR1B Models) Figure 43: Typical Percentage of Allowed Signal Reduction (FR1C Models) Marathon Series FA/FR Target Temperature Target Temperature Target Temperature Appendix ... -
Page 66: Attenuation Influence On Accuracy
Appendix 11.5 Attenuation Influence on Accuracy The ability of the FR ratio instruments to accurately measure the temperature of targets smaller than the field‐of‐view (FOV) is a key feature. As the target size becomes smaller than the FOV (thus attenuating the signal) this may cause a slight inaccuracy in the reading. The following figure presents typical measured data for an FR1C unit showing how this degradation in reading accuracy depends upon both the amount of geometrical attenuation and the target temperature. Notice that the worst inaccuracies occur at the highest target temperatures and the highest attenuations. The worst inaccuracy (at the highest temperature and the highest geometrical attenuation) is the value guaranteed in our specifications. However, notice that the accuracy of the instrument is approximately a factor of two or more better than our specification over the majority of the usable temperature and attenuation combinations, i.e., for all geometrical attenuations less than approximately 80%! Thus, by choosing the sensor‐to‐target distance properly so that the target fills at least 20% of the FOV (attenuation < 80%) the sensor performance will be significantly improved. ... -
Page 67: Traceability Of Instrument Calibration
Appendix 11.6 Traceability of Instrument Calibration Marathon Series FA/FR ...
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