RayTek FA, FR operating instructions Temperature Display, Emissivity 1‐Color, Slope 2‐Color

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Operation

Display current temperature

Switches between °C and °F

Display/Change emissivity (1-color mode)

Raises and lowers emissivity

default: 1.00

Display/Change slope (2-color mode)

or slope

default: 1.000

 

Display/Change peak hold setting

Raises and lowers

default = 0 sec / off

peak hold timing

Display/Change averaging setting

Raises and lowers

default = 0 sec / off

averaging time

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 (c – up arrow), which also doubles as the Increase Value button for the other modes. The Decrease Value (d – down arrow) button is inactive in this mode. A lit LED shows you whether the measured temperature is in °C or °F. Note that this setting influences the RS485 output for both target and internal temperatures.

6.2.2 Emissivity (1‐Color)

You can set the unit up for either 1‐color or 2‐color measurements. The 1C/2C selector button on the control panel switches between the two functions. One of the red LEDs, labeled 1C and 2C, will show what function is active.

The emissivity is a calculated ratio of infrared energy emitted by an object to the energy emitted by a blackbody at the same temperature (a perfect radiator has an emissivity of 1.00). The emissivity is preset at 1.00. For information on determining an unknown emissivity, and for sample emissivities, refer to section 11.1 Determination of Emissivity and 11.2 Typical Emissivity Values, p. 54f.

To change the unit’s emissivity setting, complete the following:

1.Make sure the 1C LED is lit.

2.Press the Mode button until the Є LED is lit. The current emissivity value shows on the

display.

3. Press the c or d 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 emissivity value.

6.2.3Slope (2‐Color)

The slope is the quotient of the emissivities based on the narrow and the wide spectral range (first and second wavelength). The slope is preset at the factory at 1.000.

Marathon Series FA/FR

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Contents Marathon FA/FR Series Page European Headquarters France United Kingdom Fluke Service CenterContacts Worldwide HeadquartersWarranty Table of Contents Milliamp Output Relay Outputs Trigger Fiber Calibration Page Marathon Series FA/FR Safety InstructionsSafety Instructions Models Product DescriptionProduct Description Theory of Operation for 2‐Color SensorsLow or Changing Emissivities Partially Obscured TargetsTargets Smaller Than Field of View FA Models Technical DataTechnical Data Measurement SpecificationsGeneral Specifications Electrical Specifications Dimensions of Optical HeadFA Models DimensionsAdjustable Mounting Bracket for Optical Head Standard Focus Optical SpecificationsClose Focus Close Focus Spot Size Charts for FA modelsStandard Focus Spot Size Charts for FR models Scope of Delivery Close Focus Spot Size Charts for FR modelsSensor Location Sensor LocationSensor Placement 2‐Color Mode Sensor Placement 1‐Color ModeViewing Angles Sensor Placement in 2‐Color ModeAcceptable Sensor Viewing Angles Mounting the Sensor InstallationInstallation Fiber Optic Cable AimingConfiguring the Sensor Cable Installing the Electronics HousingRemoving the Terminal Block RS232/485 Interface Converter Power SupplyConnecting to a PC Multidrop Installation 2‐Wire Multidrop Installation 4‐WireWiring for 2‐Wire Sensor Setup Connecting to Terminal BlockAddressing Installing of Multiple Sensors in a NetworkWiring Control Panel OperationOperation Operation Modes Mode Selector Button Sequence FA ModelsSlope 2‐Color Temperature DisplayEmissivity 1‐Color Averaging AVG 4 2C/1C SwitchPeak Hold PKH Overview to Hold Functions Valley Hold VALHold Functions SetpointsDeadband Relay Outputs Ambient Background Temperature Compensation FA ModelsInputs and Outputs Milliamp OutputFactory Defaults Factory DefaultsOptions Cooling Platform for Electronics HousingOptions Overview AccessoriesAccessories Accessories selectionProtection Tube Air Purge CollarFlexible Fitting System Fitting SystemAvailable RS232/485 Interface Converters Order number ModelDimension of Industrial Power Supply Industrial Power SupplyRemote versus Manual Considerations Command StructureProgramming Guide Programming GuideTransfer Modes Poll ModeBurst Mode = + n ⋅15000 Response Time in Setup ModeCommand List Command ListXUFR1A Command Examples Command ExamplesTroubleshooting MaintenanceMaintenance Troubleshooting Minor ProblemsFail‐Safe Operation Error Codes in 1‐Color Mode FA modelsError Codes in 2‐Color Mode FR models Examples of failsafe conditions Current Output Values in accordance to an ErrorCleaning the Lens Removing the Fiber Optic Cable from the Optical Head Replacing the Fiber Optic CableRemoving the Fiber Optic Cable Put cable out Attaching the Fiber Optic Cable to the Optical Head Mounting the Fiber Optic CableFiber Calibration Dialog for the Calibration of the Fiber Cable Typical Emissivity Values AppendixAppendix Determination of EmissivityTypical Emissivity Values Non‐Metals Marathon Series FA/FR55Typical Emissivity Values Metals Typical Slopes How to determine slope?Typical Percentage of Allowed Signal Reduction FR1A Models Signal Reduction FR ModelsAttenuation Influence on Accuracy Maximum ErrorInstrument Calibration Marathon