Omega OSP SERIES manual Unstable temperature measurement, Working band Weight

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In measuring mode, press the <*> key to enable (disable) the laser spot. After one second the message “LAS EN” (“LAS DIS”) will be displayed.

When enabled, the laser can be turn on by pressing the <Trigger> button for more than 1 second; a flashing emission indicator symbol “*” will appear on the lower display.

°C

e

The laser will go out automatically releasing the <Trigger> button.

NOTE: TO PREVENT ANY COLLATERAL RADIATION IN EXCESS OF THE LIMITS DURING THE OPERATION OR MAINTENANCE, THE LASER BEAM WILL AUTOMATICALLY SWITCHED OFF WHEN TRIGGER IS RELEASED (ALSO IN LOCK OPERATION MODE).

9.5Unstable temperature measurement

When measuring a very unstable temperature process, is necessary a slow and stable reading. OSP is equipped with an advanced average mode that works with the following parameters :

!Working band

!Weight

The working band is used to define the maximum difference between the actual and previous measurement values where average mode has to be operative. It means that if you are measuring ambient temperature ( for example 23°C ) and you point the instrument to the process ( for example 600°C ) you don’t need a slow increasing due to average ( The difference is 600 – 23 = 577 °C ).

If working band is set at 100°C instrument don’t apply any average and it will pass directly to temperature of the process ( 600°C ) otherwise with standard average you will see the temperature slowly growing from ambient to the target point. When instrument is measuring the process the difference due to unstable temperature is inside working band so it will works in average mode.

More unstable is the process higher has to be the weight of the average. Higher is the weight ,slower will be the reading.

 

Weighted average effect

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input temperature

Indicated values with

Indicated values with

 

Indicated values with

 

fluctuations

weighted average = 0

weighted average = 2

 

weighted average= 32

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Working band effect

 

 

 

 

 

 

Temperature

Measured value with weighted

Measured value with weighted

fluctuation

average=32 and working band

average=32 and working band

 

excluded

included

To enable/disable the average mode follows the procedure below:

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Contents OSP Series Portable IR thermometers OMEGAnetSM On-Line Service Internet e-mail Info@omega.com Introductory Note Table of Contents Data Acquisition Operative Mode General Description General featuresInnovative design Instrument codes Specifications Thermocouple measuring rangesOptical System General FeaturesGeneral Target pinpointingDigital Interface KeyboardDisplay Self calibrationCase Logging ModeCalculated Measurements Logging Data ManagerPhysical Description Power supply Functional DescriptionMicrocontroller Battery chargerFirmware Unpacking PRE-OPERATIONAL Check ΛEM = 10.6 ∝MPower supply with alkaline batteries Power SupplyHow to maximize the life span of the battery Power supply from main line ACLaser Sight Analogue inputPage Quick Start How to Operate the instrumentOperations Trigger * MEM SEL EnterHold Laser sightingUnstable temperature measurement Working band WeightAlarm settings HAL Minimum, maximum, average and difference indication Automatic Emissivity Setting Temperature Scale selection ConfigurationThermocouple input enabled Technical Unit selectionDate & Real Time clock setting Acquisition settingsOSP 500/800 decimal point selection Ambient Temperature Compensation TAMBuzzer On/Off Actual Target Emissivity Ambient Temp Indicated Temp TAMFirmware revision number Instrument serial numberBattery level of charge How to operate in data acquisition mode Data Acquisition Operative ModeAcquisition by dedicated Tags Log Recall stored data Logging Data Manager InstallationProgram Architecture Data FileHelp EditToolbars Move into a new file Quick startingCopy into an open file Move into an open filePress the or key to select the Tag a identification code Log Page Printer operations Options & AccessoriesSighting telescope system Red Point pinpointing system Filter installationInstallation of the sighting device Part n DescriptionPage Applications Application NotesInfrared energy EmissivityDigital Interface Digital output wiring practiceTTL to RS 232 adapter Computer data request from OSP to PC Communication protocolComputer $00 Pyrometer measure Reading valuesComputer data setting from PC to OSP Writing valuesExample B PC instructions to OSP Communication programsExample a Data transfer from OSP to PC Example aExample B 9Ø Chksum = DATA1 + DATA2 + DATA3 + DATA4 and &H7FStorage MaintenanceFaulty operating conditions ErrAppendix A1 How to determine an object emissivity A1.1 Typical Emissivity ValuesA1.2 Metals Typical Emissivity Values 14 µmA1.3 Non-metals Typical Emissivity Values Index Weight Working band WARRANTY/DISCLAIMER Temperature