RayTek MI Miniature Infrared Sensor Trigger and Hold Function, Wiring of FTC3 as External Input

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Installation

5.4.4 Trigger and Hold Function

The FTC3 input can be used as external trigger in conjunction with the software trigger mode setting “Trigger” or “Hold”.

External switch:

-contact relay,

-transistor,

-TTL gate, …

Figure 17: Wiring of FTC3 as External Input

Trigger: A logical low signal at the input FTC3 will reset the peak or valley hold function. As long as the input is kept at logical low level the software will transfer the actual object temperatures toward the output. At the next logical high level, the hold function will be restarted.

Temp

object temperature output temperature

FTC3

Time

Figure 18: FTC3 for Resetting the Peak Hold Function

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MI

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Contents Operating Instructions Declaration of Conformity for the European Community Contacts EuropeRaytek GmbH Raytek Corporation United Kingdom FranceWarranty Table of Contents Onnecting to the PC VIA RS232 Output for the Target Temperature Ommand S ET Safety Instructions Safety InstructionsOperating Instructions Description DescriptionTechnical Data Technical DataMeasurement Specifications Temperature Resolution Temperature CoefficientEmissivity TransmissionTechnical Data Optical Specifications Optical Resolution DSTechnical Data Electrical Specifications Power SupplyOutputs Technical Data Environmental Specifications Technical Data Dimensions Dimensions of Sensing HeadDimensions of Electronic Box Scope of DeliveryMeasurement of Infrared Temperature BasicsBasics Ambient Temperature Basics Emissivity of Target ObjectAtmospheric Quality Basics Electrical Interference Installation InstallationPositioning Distance to ObjectWiring Sensor Head CableCable for Power Supply and Outputs Cable PreparationConnecting of Cables to the Electronic Box Installation Outputs Signal Outputs and Power SupplySignal Output Wiring of the Signal Output mA orHead Ambient Temp. / Alarm Output Wiring the Output for Head Ambient TemperatureInstallation Wiring the Thermocouple J Compensation Cable Wiring the Thermocouple K Compensation CableThermocouple Output Installation Inputs FTC Overview to the FTC InputsEmissivity Setting analog controlled Ratio between Analog Input Voltage and Emissivity ExampleEmissivity Setting digital controlled Digital Selection of Emissivity with FTC InputsAmbient Background Temperature Compensation Principle of Ambient Background Temperature Compensation Wiring of FTC3 as External Input Trigger and Hold FunctionFTC3 for Holding the Output Temperature Installation Connecting to the PC via RS232 Connecting the RS232 cableInstallation Installing of Multiple Sensors via RS485 Wiring the RS485 InterfaceAddressing through Buttons Addressing through SoftwareInstallation Operation OperationControl Panel Operation Setting the Output Jumper Operation Setting of Modes Mode Range Available ModesOperation Post Processing AveragingOperation Peak Hold Valley Hold Advanced Peak Hold Advanced Valley Hold Advanced Peak Hold with AveragingAdvanced Valley Hold with Averaging Operation Factory Defaults Options OptionsAccessories AccessoriesOverview Standard Mounting Accessories Accessories Adjustable Mounting Bracket Adjustable Mounting Bracket XxxmiacabAccessories Fixed Mounting Bracket Fixed Mounting Bracket XxxmiacfbAccessories Air Purging Jacket Air Purging Jacket XxxmiacajMounting the Air Purge Jacket Accessories Air Cooling System Air Cooling SystemAir Flow Accessories Air Cooling System T‐Adapter Dimensions of Air Cooling System Accessories Right Angle Mirror Right Angle Mirror * with Air PurgingAccessories Box Lid Box Lid with View Port for Post InstallationsAccessories Protective Window Protective Window XxxmiacpwMaintenance MaintenanceTroubleshooting Minor Problems TroubleshootingMaintenance Fail‐Safe Operation Error Codes for the OutputsError Codes via RS232/485 Error Codes via RS232/485 Error Codes for the LCD DisplayError Codes LCD Display Maintenance Sensing Head Exchange Maintenance Software SoftwareProgramming Guide Programming GuideSettings Return from the burst mode to the poll modeProgramming Guide Transfer Modes Programming Guide General Command Structure Requesting a parameter Poll ModeSetting a parameter Poll Mode Device response formatError message Device InformationDevice Information Programming Guide Device Setup Temperature CalculationEmissivity Setting and Alarm Set points Selection of the emissivity settingTable for Emissivity and Set Points Dynamic Data Post ProcessingOutput for the Target Temperature Alarm OutputFactory default values Programming Guide Device ControlLock Mode Mode Setting for the Digital Input FTC3Changing the Sensing Head Calibration Data Setting the command ES = D Programming Guide Multiple Units RS485 Multidrop Mode Changing an addressProgramming Guide Command Set LCDDescription LT ‐40 to 600C ‐40 to 1112F = number, X = uppercase letter Command Set Appendix AppendixDetermination of Emissivity Appendix Appendix Typical Emissivity Values Metals Tab Typical Emissivity Values for Metals NON -METALS Tab Typical Emissivity Values for Non‐MetalsIndex Index