AST A250 FO-PL User Manual
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AST A250 FO-PL User Manual

Non-contact infrared pyrometers
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Accurate Sensors Technologies
We measure accurate temperature in extreme conditions
AST A250/A450 FO-PL
Non-contact Infrared Pyrometers
USER MANUAL
AST - Accurate Sensors Technologies
Misgav Industrial Park, Misgav 20173, Israel
Tel: +972-4-9990025, Fax: +972-4-9990031
Email: info@accuratesensors.com
Web: www.accuratesensors.com

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  • Page 1 Accurate Sensors Technologies We measure accurate temperature in extreme conditions AST A250/A450 FO-PL Non-contact Infrared Pyrometers USER MANUAL AST - Accurate Sensors Technologies Misgav Industrial Park, Misgav 20173, Israel Tel: +972-4-9990025, Fax: +972-4-9990031 Email: info@accuratesensors.com Web: www.accuratesensors.com...
  • Page 2 Accurate Sensors Technologies Index 1. Chapter - 1 ..........................1 General information 2. Chapter - 2..........................2 Introduction 2.1 Application, range and working principle 2.2 Technical specification 2.3 Fiber optic cable 2.4 Optics 3. Chapter - 3..........................5 Installation of pyrometer 3.1 Installation 3.2 Mechanical accessories 3.3 Electrical installation...

  • Page 3: General Information

    AST reserves the right to revise this document and to make change from time to time in the content hereof without obligation to notify any person or persons for such revisions or changes AST instruments have a warranty of two year from the invoice date.
  • Page 4 & digital outputs. AST A250 / AST A450 FO PL has a fast response time of 2msec. Pyrometer have RS-232, RS-485 & USB 2.0 outputs. Response time, emissivity, sub range and peak picker selection can be preset ex works or adjusted through available software.

  • Page 5: Technical Specifications

    Accurate Sensors Technologies 2.2 Technical Specifications Model AST A250 FO/PL AST A450 FO/PL Measured Temperatures Range 250°C - 1800 °C 600°C - 2500°C (Analog sub range adjustable) Emissivity Range 0.1…..1.0 adjustable Spectral Range, µm 1.6µm 1µm Photodetector Type InGaAs 40:1 OH(I)
  • Page 6 66.4 78.9 75.75 72.8 70.1 68.8 68.1 67.15 66.7 66.4 Optical Pullout P(mm) 12.5 9.35 0.75 250 - 1300°C Spot Size(mm) AST A250 FO PL 300 - 1800°C 600 - 1900°C Spot Size(mm) AST A450 FO PL 750 - 2500°C...
  • Page 7 User can easily find out the spot size For example, if factory made working distance is 260mm & pyrometer is AST 250 FO-PL then spot size is 6.5mm Fig. Spot Size for head-I (as given in above table). If user installed this pyrometer at 700mm then spot size is not 17.5mm (as given in table), user should have to...

  • Page 8: Installation

    Accurate Sensors Technologies Chapter - 3 Basics & Installation of the Pyrometer Basics of Infrared temperature measurement of an object Each and every object emit definite amount of infrared radiation and its intensity varies according to the temperature of object. Wavelength of infrared radiation lies approximately between 0.7 to 1000 µm depending on the material and properties of object.
  • Page 9 Accurate Sensors Technologies 3.2.2 Distance of pyrometer from object The desired spot size on the target will determine the maximum measurement distance and the focal length of the optical module. To avoid wrong readings the spot size of target must contain entire field view of the pyrometer.

  • Page 10: Location Selection

    Accurate Sensors Technologies 3.1.1 Location selection Qualified operating person should do the installation. Location should be good enough so that pyrometer should get continuous infrared radiation. Pyrometer distance from object is according to below points:- 1. Pyrometer spot size should be small than object size. 2.

  • Page 11: Mechanical Accessories

    Accurate Sensors Technologies 3.2 Mechanical accessories 3.4.1 Water Cooling Jacket This accessory is very important in order to use pyrometer at higher temperature. A normal pyrometer can withstand a temperature of 0-70°C. For higher temperature applications the device must be used with water cooling jacket upto 200°C.( for mechanical drawing refer Appendix C.) Water pressure <...
  • Page 12 Ref. No.: 9000-01 Temperature Indicator 230V, AC 4-20 mA(+) Yellow Violet +24 V DC White Blue AST Digital Cable Pink AST Pyrometer with Black Digital Output RS-232 Computer AST 12-core cable Female RS-232 Connection RS-232 Connector Fig.
  • Page 13 (RS-232 Communication 230V, AC 4-20 mA(+) Cable) Yellow Violet Earth +24 V DC White Computer Pink AST Pyrometer with Female Male Female Digital Output RS-485 Blue RS-232 Connector RS-232 Connector RS-232 Connector AST 12-core cable Ref. No.: 9000-03 Fig. 16 RS-485 to RS-232 Connection...
  • Page 14 Fig. 20 Temperature Indicator (Reference no: 9000-01) 3.5.6 Display & Parameterizer AST P-120 is a high precision LED indicator for non contact temperature measurement. With indication of measured temperature user can easily parameterize a connected AST digital pyrometer without any PC.

  • Page 15: Software Installation

    Accurate Sensors Technologies Chapter - 4 Software Installation The provided AST software “InfraSoft” offers digital PC interface RS-232 & RS-485. Using this software we can set all the parameters like response time, analog scale, emissivity, clear time, communication mode. This software provide all necessary information about pyrometer.
  • Page 16 Accurate Sensors Technologies For communication of multiple pyrometers, select different com port and address. 4.2.2 Temperature It shows the temperature measured by the pyrometer 4.2.3 Parameter Setting All user selectable device parameters can be set by using the software in the Panel "Parameter" (A)Emissivity settings The emissivity can be set by clicking on "Parameters”...
  • Page 17 Accurate Sensors Technologies (E)Switch off level% ( for two color pyrometer) The switch of level is the function that is used to avoid measurement errors caused by signals, which are too low. Although factory default is set to 15 %, the switch off limit can be adjusted between 2 and 50%.

  • Page 18: Device Information

    Accurate Sensors Technologies The following setting are possible : OFF : At clear time “OFF” the maximum value storage is switched off and only momentary values are measured. Auto : “Auto” mode is used for discontinuous measuring task, such as object being transported on a conveyer belt in such a case the maximum value for each object has to be indicated.
  • Page 19 Accurate Sensors Technologies Record will be saved as .txt format and the name of file will be user define. To record emissivity, click on Record Emissivity button. If user wants file in Spreadsheet format, user can export by choosing Excel Spreadsheet in file menu.
  • Page 20 Accurate Sensors Technologies File will be stored in .xls format named as “export”. This “export.xls” file will be saved where the software is installed. To see previous record open the file by clicking on menu File open. Screen containing historical trend & historical data will appear.
  • Page 21 Accurate Sensors Technologies Temperature graph of connected pyrometer is displayed on right side of the screen. This shows the measured temperature corresponding to the time. Note: After connecting the pyrometer right click on the graph screen and choose "Set to default" option from pop-up menu.

  • Page 22: Android Application Software

    Android Application Software 5.1 Installation Process AST provides “infrasmart .apk” for android phone. This apk is in software CD. Special Note: - This apk is compatible with android version 4.0 and above Following are the predefined steps to install apk in a mobile.

  • Page 23: Operation

    Accurate Sensors Technologies 5.2 Communication After installation, switch on Bluetooth of mobile. Scan for available devices. (Fig. 6) Select the device name from list for pairing. (Fig. 5.7) For pairing user need to enter pin no. Pin no will be reverse of last four digit of device name.( For eg:- if device name is A2B-1627 then pin will be 7261).
  • Page 24 Accurate Sensors Technologies 5.4 Data logging & Online graph For data logging user need to click on dots which is at the right side as shown by arrow in below screen (Fig. 11) Next screen will be (Fig. 5.12) (Fig. 5.11) (Fig.
  • Page 25 Accurate Sensors Technologies To Start data logging, Enter file name & log time then click on start tab. Note : If file name or log time is not enter within 5 sec then time out error will appear. To save data logging click on save button. Location where file is saved will be shown on data logging screen as shown(Fig.
  • Page 26 Accurate Sensors Technologies Chapter - 6 Calculate Spot Size To calculate Spot Size click on Utility Calculate Spot Size This option is used to calculate the spot size at installed working distance of the Pyrometer. When you click on calculate spot size the new window will open. Manufactured working distance in (mm).

  • Page 27: Maintenance

    Accurate Sensors Technologies Chapter - 7 Maintenance In case of any queries, questions regarding repair, solutions to problems, calibration and assistance you may contact our sales representatives. Most of problems can be solved telephonically. 7.1 Cleaning Lens The lens should be kept clean all the time as it aims at center of target object. When cleaning lens care should be taken and it can be done as follows : Firstly blow off lightly loose particles with “canned air”...
  • Page 28 AST sensors always operate as Slave devices. Using RS485 serial communication option allows connecting more than one sensor to Master device. AST sensors always perform delay of 5 ms before sending an answer on Master request to meet RS485 hardware requirement.
  • Page 29 Accurate Sensors Technologies Device model number (read '0E00' '01' 10 bytes “AST450C “', if less than 10 byte pad with space at end only) Firmware version '1300' '01' Firmware version number of device (read only) Sensor serial number (read 6 bytes in hex, if less than 6 bytes pad with '0' at start. Only numbers '1400' '01' only)
  • Page 30 Accurate Sensors Technologies Reply to above command if address '0000' contains value 1497 and address '0001' contains value 0000. Byte 1 Bytes 2, 3 Bytes 4, 5 Bytes 6-9 Bytes 10-13 Byte 14 Byte 15-16 059D 0000 0x02 0x30, 0x41 0x52, 0x44 0x30,0x35,0x39,0x44 0x30, 0x30, 0x30, 0x30...
  • Page 31 Accurate Sensors Technologies Error Codes Error Code Description Comments Invalid check sum See how to calculate a check sum Unknown command Protocol uses only RD (Batch Read) and WD (Batch Write) commands Data length error Number of items in WD (Batch Write) command doesn't match number of data bytes ETX not found ETX (0x03) not present in command...

  • Page 32: Broadcast Message

    Accurate Sensors Technologies Appendix A DATA Comments Status code '0000' : No error '0001' : Signal is lower than sensor sensitivity '0002' : Out of range due to T brightness minimum '0003' : Too low energy '0004' : Signal is higher than sensor sensitivity '0006' : Sharp brightness jump '0007' : Non stable object measurement '0011' : Internal temperature warning...
  • Page 33 Accurate Sensors Technologies Appendix B Typical emissivity values for various materials available: All the emissivity values shown in the table are only approximate, as it depends various parameters and it may affect the emissivity of a material. These parameters are as under: Temperature Thickness of material Angle of measurement...

  • Page 34: Mechanical Drawings

    Accurate Sensors Technologies Appendix C Mechanical Drawings Water Cooling Jacket FOR 6 mm INSIDE DIAMETER HOSE 3 x M5 Ø30 138.50 Air Purge Unit Adjustable Mounting Stand for 6 mm inside diameter hose for 3 mm inside diameter hose Air Purge Unit Adjustable Mounting Stand (Reference no: 8000-04) (Reference no: 8000-07)

  • Page 35: Packing Instructions

    Liability regarding any direct or indirect damage caused by this software is excluded. Limit of liability AST not liable for any damages that arise from the use of any examples or processes mentioned in this manual. Specifications are subject to change without notice Copyright: ©...
  • Page 36 Based on these technologies, AST/3T has bought to the market a line of pyrometers for the remote measurement of target temperatures using no physical contact. AST/3T pyrometers use a totally new approach for remote temperature measurement achieving high accuracy.

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A450 fo-pl

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