AST AL390 User Manual
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AST AL390 User Manual

Non-contact infrared pyrometers
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Accurate Sensors Technologies
We measure accurate temperature in extreme conditions
AST AL390
Non-contact Infrared Pyrometers
USER MANUAL
AST - Accurate Sensors Technologies Ltd.
Teradion Industrial Park, Misgav 20173, Israel
Tel: +972-4-9990025, Fax: +972-4-990031
Email: technical@accuratesensors.com
Web: www.accuratesensors.com

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  • Page 1 Accurate Sensors Technologies We measure accurate temperature in extreme conditions AST AL390 Non-contact Infrared Pyrometers USER MANUAL AST - Accurate Sensors Technologies Ltd. Teradion Industrial Park, Misgav 20173, Israel Tel: +972-4-9990025, Fax: +972-4-990031 Email: technical@accuratesensors.com Web: www.accuratesensors.com...
  • Page 2 Accurate Sensors Technologies Index 1. Chapter - 1 ........................General information 2. Chapter - 2 ........................Introduction Product Key Features, Application and Range Technical specification Optics 3. Chapter - 3 ........................Basics & Installation of Pyrometer Basics of Infrared temperature measurement of an object Installation Location Selection Mechanical Accessories...

  • Page 3: General Information

    -20° to +70° C. 1.1.6 Warranty AST AL390 instruments have a warranty of two years from the invoice date. AST will replace defective parts, which arises from design errors or manufacturing faults. In case, if pyrometer is opened, disassembled or modified then the guarantees will loss.
  • Page 4 AST AL390. This format combines the high accuracy of digital signal processing with the simple connection. The electronic assembly is protected by IP65 rugged stainless steel housing. These pyrometers have solid body in stainless steel housing which provides high operation safety even in rough industrial environment, and large variety of optics with fixed focus which can be easily used in all industrial areas.

  • Page 5: Technical Specifications

    Accurate Sensors Technologies 2.2 Technical Specifications Model AST AL390 Temperature Range 300°C to 1400°C (Analog sub range adjustable) (Analog output sub range adjustable) Emissivity Range 0.1 ……. 1.2 adjustable Spectral Range, µm 3.9 µm Photodetector Type Thermopile Response Time 60msec 1.5 % of temperature reading...
  • Page 6 2.3 Optics The pyrometer measure temperature by receiving heat radiation from the object whose temperature has to be measured. This heat radiation is passed through the lens, sensor converted to an electrical signal. The farther the measured object is from the pyrometer, the larger the area that will be measured by the pyrometer. Depending on customer need, the pyrometer is designed wit h fixed optics.

  • Page 7: 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 8 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 9: Location Selection

    Accurate Sensors Technologies 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.(read 3.2.2 & 3.2.3) 2.

  • Page 10: Mechanical Accessories

    Accurate Sensors Technologies 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 11: Electrical Installation

    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...
  • Page 12 Accurate Sensors Technologies Table 2 : Color code & Pin specification for pyrometer connections Colour Indication Used for + 24 V DC In Power supply White Ground Blue TxD (RS-232) / D- (RS-485) Pink RxD (RS-232) / D+ (RS-485) RS-232/ RS-485 communication Black...
  • 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. 17 RS-485 to RS-232 Connection...
  • Page 14 Fig. 21 Temperature Indicator (Reference no: 9000-01) 3.5.8 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 (G) Peak Picker Setting Three Pickers are available in Pickers setting menu (Auto, tCL, Smart) & user can switch on any as per requirement, one at a time. (G1) 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 18 Accurate Sensors Technologies (G3) Smart If the smart picker is switched on, the highest last temperature value will always be displayed and stored. This feature is particularly useful when object temperature is not uniform across its dimension or the pyrometer is not constantly viewing an object to be measured. Smart Picker Functions Smart picker can be turn ON &...

  • Page 19: Device Information

    Accurate Sensors Technologies (H)Relative energy(for two color pyrometer) The relative energy shows a signal weakening which can be caused by contaminations of the optics or a viewing window or by dust in the field of view or a too small measuring object. Relative energy shows the measured intensity compared to the intensity, a black body radiation source would have at a determined ratio temperature of the pyrometer.
  • 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 Accurate Sensors Technologies Chapter - 5 Calculate Spot Size Calculate Spot Size To calculate Spot Size click on Utility 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.

  • Page 23: Cleaning Lens

    Accurate Sensors Technologies Chapter - 6 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 24 Slave device. The request contains an address of polling “Slave” device. Slave device reply only on the requests issued by Master. Each Slave has its own address to recognize the issued request. AST sensors always operate as Slave devices. Using RS485 serial communication option allows connecting more than one sensor to Master device.
  • Page 25 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 26 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 14-15 059D 0000 0x02 0x30, 0x41 0x52, 0x44 0x30,0x35,0x39,0x44 0x30, 0x30, 0x30, 0x30 0x39, 0x43...
  • Page 27 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 28: 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 29 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 30: Mechanical Drawings

    Accurate Sensors Technologies Appendix C Mechanical Drawings Water Cooling Jacket Water Cooling Jacket with Adjustable Flange PL Water Cooling Jacket with Adjustable Flange TL (Reference no: 8000-02) (Reference no: 8000-06) Air Purge Unit Adjustable Mounting Stand ° 3 x M6 THRU AT 120 FOR 6 mm INSIDE DIAMETER HOSE GRUB SCREW FOR...

  • Page 31: Maintenance

    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 32 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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