Datcon DT9502 Operating Instructions Manual
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Datcon DT9502 Operating Instructions Manual

Intrinsically safe temperature meter / transmitter
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DT9502
Intrinsically Safe Temperature Meter / Transmitter
Operating Instructions

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  • Page 1 DT9502 Intrinsically Safe Temperature Meter / Transmitter Operating Instructions...

  • Page 2: Table Of Contents

    DT9502 Contents 1. About this document .............4  1.1. Function ................... 4   1.2. Target group................4   1.3. Symbolism used............... 4   2. For your safety ...............5  2.1. Authorised personnel ............... 5   2.2. Appropriate use................ 5   2.3. Warning about misuse ............. 5  ...
  • Page 3 DT9502 7. 7. Setting-up ..............26  7.1. Typing the code (password) in ..........26   7.2. The menu ................28   7.3. Display modes of limit output status........29   (01. menu item) ................29   7.4. Setting up the limit outputs (02. & 03. menu items) ....31  ...

  • Page 4: About This Document

    1. About this document 1.1. Function This operating instructions manual has all the information you need for quick set-up and safe operation of DT9502. Please read this manual before you start setup. 1.2. Target group This operating instructions manual is directed to trained personnel.

  • Page 5: For Your Safety

    2.4. General safety instructions The DT9502 is a high-tech instrument requiring the strict observance of standard regulations and guidelines. The user must take note of the safety instructions in this...

  • Page 6: Eu Conformity

    DT9502 2.5. EU conformity The DT9502 is in conformity with the provisions of the following standards: MSZ EN 60079-0:2013 (ATEX) MSZ EN 60079-0:2013/A11:2014 (ATEX) MSZ EN 60079-11:2012 (ATEX) MSZ EN 61326-1:2013 (EMC) MSZ EN 55011:2016 (EMC) MSZ EN 55011:2016/A1:2017 (EMC)

  • Page 7: Product Description

    2. front panel with 3 membrane push buttons 3.2. Principle of operation Application fields The apparatus DT9502 is a loop-powered intrinsically safe temperature meter and transmitter instrument, fed by 4–20 mA loop current. It works with a standard Pt100 measuring probe, which is not an accessory of the instrument.
  • Page 8 (e.g. temperature regulation). Due to the function of DT9502 it can be placed in zone 1, zone 2. The temperature sensor can be in zone 0 too. A current generator (800 A) is connected to the terminal Operating principles pair PI+ and PI-.

  • Page 9: Settings

    The disposal of the internal foam material is recommended to take place through a company specialised for recycling. Storing in dry places, on room temperature, free from vibrations has beneficial effects on the expectable lifetime of the apparatus DT9502. 20171205-V3...

  • Page 10: Mounting

    DT9502 4. Mounting 4.1. General instructions Use the enclosed seal when mounting DT9502 on panel to assure IP 65 protection from the front side. Electrostatic hazard! Clean only a moist cloth and detergent. Mounting positions Select a mounting position you can easily read the display...

  • Page 11: Mounting Procedure

    DT9502 4.3. Mounting procedure Preparatory steps 1. Cut-out the panel according to the figure shows below. The cut-out needs special tools, it must be carried out by trained specialist personnel. Cut-out dimensions 2. Put on the enclosed seal onto the instrument case from the rear side and fit it to the instrument front panel back side.
  • Page 12 DT9502 Mounting by the mounting fixtures 4. Put on the two enclosed srew clamps onto the sides of the instrument case (Figure step 1). Fix the instrument by turning the srews in clockwise direction (Figure step 2). Pay attention not to let pointed, sharp metal parts cause accidents.

  • Page 13: Connecting

    In hazardous areas you should take note of the appropriate regulations, conformity and type approval certificates of the DT9502 and other instruments are connecting in the current loop (e.g. power supply, transmitter, etc.). The connection must be carried out by trained and...
  • Page 14 DT9502 Connection • The shieldings of the cables connected to Pt100 and to 4-wire mode the current loop must be connected with each other. (see also “Application example”) Be careful the polarity of the cables. The most accurate measurement can be achieved by the 4- wire operating mode, as the cable resistances and their possible asymmetry will not cause measuring errors.
  • Page 15 DT9502 Connection • The shieldings of the cables connected to Pt100 and to 3-wire mode the current loop must be connected with each other. (see also “Application example”) Be careful the polarity of the cables. The 3-wire operating mode results in less accurate...
  • Page 16 DT9502 Wiring plan, connecting the limit outputs (see also “Application example”) Be careful the polarity of the cables. Select connection cable Take note the suitability of the connecting cable. We recommend the use of screened twisted pair cable. The wire cross-section should be 0.25-1.5 mm...
  • Page 17 DT9502 The push-in direct connector assemblies used allow a fast connection of the cables. Their proper usage is shown by the following figure: Connecting the cables into the terminal assemblies 1. Push the stripped cable-end until it possible into the terminal assembly.
  • Page 18 Check if everything has been done in accordance with chapter 5.1. Connection to the measurement loop. With this you have completed the connection of DT9502. 20171205-V3...

  • Page 19: The Display And The Operating Devices

    DT9502 6. The display and the operating devices 6.1. The first start-up The display The dispay is shown by the arrow (1). After the apparatus has been installed to its place, the probe Pt100 has been connected in accordance with the...

  • Page 20: Characters And Mnemonics Appearing On The Display

    DT9502 6.2. Characters and mnemonics appearing on the display DT9502 has a 7-segment type display. It means that maximum 7 bars are used to form each characters. The numbers can be read easily, some of the letters, marks however, looks unusual: ...
  • Page 21 DT9502 Messages of critical errors A/D failure (Service: AD Hardware)  EEPROM failure (Service: EEPROM Hardware)  EEPROM write error (Service: EEPROM Protected)  Calibration error (Service: Calibration)  Default factory settings (Service: Default Factory  Settings) The last saving was not successful (Error: Last Save) ...
  • Page 22 DT9502 Minimum-maximum values on the display (▲ button) Minimum value (MINimum)  Maximum value (MAXimum)  Firmware version (FiRMwareE)  Low numeric value not possible to display  High numeric value not possible to display  Limit values on the...

  • Page 23: Manual Controls

    DT9502 6.3. Manual controls DT9502 can be adjusted by the membrane push-buttons indicated by (1), (2), and (3) in the drawing. Functions of the push-buttons during measurement (1) MENU button: Entering into the menu. When this button is pressed, the apparatus prompts you to give your code in accordance with chapter 7.1.
  • Page 24 DT9502 How to use it? 1. Press down the ▲ button, and keep it down. The text  shows that the minimum value out of all the results measured since the last deletion is going to appear on the display.
  • Page 25 DT9502 • The minimum value and the maximum value can be deleted after a supervisor-level entry, by using the menu item No. 14. (Deleting the minimum and the maximum values). (3) ENTER button: presenting the limit output status on the display.

  • Page 26: Setting-Up

    DT9502 7. 7. Setting-up 7.1. Typing the code (password) in The importance of the You may enter the menu only after you have typed your code code in. The code is made from 3 numeric characters. This solution prevents unauthorised persons from changing the settings of the instrument.
  • Page 27 DT9502 Automatic exit from If no buttons are pressed, the instrument displays the the request for the code  mnemonic (Auto Escape) after 1 minute has passed from the last pressing of a button, and it RESTARTS, i. e. goes back to the measuring mode. This...

  • Page 28: The Menu

    DT9502 7.2. The menu The menu structure 01: Limit-value display 29. page 02: Limit value 1 03: Limit value 2 30. page 04: 4 wire / 3 wire 39. page 05: Temperature 4 mA 40. page 06: Temperature 20 mA 42.

  • Page 29: Display Modes Of Limit Output Status

    DT9502 7.3. Display modes of limit output status (01. menu item) Function The state of the limit outputs (whether they are switched on or off) can be displayed. Here you can define the conditions, on which displaying should depend. [Default factory setting: OFF] Sequence of operations 1.
  • Page 30 DT9502 Sequence of operations  •  : Always on (ON) It always displays the states of limit outputs. If you keep the ENTER button pressed down, the measurement results are displayed. (This operating mode is useful when the states of limit outputs is more important than the measured value.)

  • Page 31: Setting Up The Limit Outputs (02. & 03. Menu Items)

    DT9502 7.4. Setting up the limit outputs (02. & 03. menu items) Function The instrument has two limit outputs. They are identical with each other, and work independently. Operation: the instrument keeps comparing the displayed physical value with the (adjustable) limit value. It switches the output ON depending whether the displayed value is higher than the limit value.
  • Page 32 DT9502 Setting the operating 6. After you have selected the desired operating mode for mode the limit output, press the MENU button. This takes you out Sequence of operations  from the given sub-menu item, and you see this: ...
  • Page 33 DT9502 14. Pressing the ▲ button you can switch on or off the minus sign.  • = 123.4 °C  • = -123.4 °C 15. After you have defined the value for the limit, press the MENU button to exit from the sub-menu item, and you see ...
  • Page 34 DT9502 Hysteresis of the low 17. Enter by pressing the ENTER button. limit 18. You see this Sequence of operations  on the display. This is the value of L1.LH. It can be changed between 000 and 999. The digit at the left side is blinking.
  • Page 35 DT9502 26. Pressing the ► button you can select the next digit. 27. Pressing the ▲ button you can increase the value of the blinking digit:           , etc. 28. When the last digit (right-side) is being selected, and you press the ►...
  • Page 36 DT9502  34. You see this on the display. This is the value of L1.HH. It can be changed to any values between 00.0 and 99.9. The digit at the left side is blinking. 35. Pressing the ► button you can select the next digit.

  • Page 37: Limit Output Alarm Mode

    DT9502 7.5. Limit output alarm mode Function In alarm mode, the limit output is switching on when the limit condition exist. But the output stays switched on (independent from the limit condition) until the ENTER button is pressed (alarm acknowledge). (All these information are described in detail in Chapter 7.4.
  • Page 38 DT9502 Exit from the menu  Press the MENU button. First the mnemonic (Save),  then the mnemonic (Exit) are shown on the display. With this the storing of the settings is completed. The instrument has exited the menu and goes on with the measurement.

  • Page 39: 4-Wire / 3-Wire Operating Modes (04 Menu Item)

    DT9502 modes (04 menu item) 7.6. 4-wire / 3-wire operating Function In this menu item you should select either 4 wires or 3 wires for connecting the probe Pt100 to the apparatus. (Factory default setting: 4 wires) Sequence of operations 1. Enter the menu with the supervisor code.

  • Page 40: The Temperature Value Belonging To The 4 Ma Value (05 Menu Item)

    DT9502 7.7. The temperature value belonging to the 4 mA value (05 menu item) Function The apparatus regulates the loop current between 4 and 20 mA in proportion with the measured temperature. In this menu item any °C values between -200.0 °C and 600.0 °C could be assigned to the 4 mA loop current.
  • Page 41 DT9502 Exit from the menu item 1. After you have completed the setting, press the MENU button. With this you leave the menu itemt, and you see  this: (2. If you want to change the setting you have just...

  • Page 42: The Temperature Value Belonging To The 20 Ma Value (06 Menu Item)

    DT9502 7.8. The temperature value belonging to the 20 mA value (06 menu item) Function The apparatus regulates the loop current between 4 and 20 mA in proportion with the measured temperature. In this menu item any °C values between -200.0 °C and 600.0 °C could be assigned to the 20 mA loop current.
  • Page 43 DT9502 Exit from the menu item 1. After finishing the setting, press the MENU button to exit  from the menu item, and you see this: (2. If you want to change the setting you have done just now, or if you just want to check what you have typed in, go on with the operation from point 3 of the Sequence of operations.)

  • Page 44: The Number Of Averaged Measurements (07. Menu Item)

    DT9502 7.9. The number of averaged measurements (07. menu item) Function The instrument performs cca. 15 measurements in each seconds. The displayed measurement result is generated as the average of several measurements. Here you can define the number of measurements that should be used for calculating the averaged numerical value.
  • Page 45 DT9502 Sequence of operations  •  : The displayed value is the same as the last measurement result; the previous measurements do not influence this value. (The display settling time after the stabilisation of the input signal: 0.1 second.) ...

  • Page 46: Display Refresh Time (08. Menu Item)

    DT9502 7.10. Display refresh time (08. menu item) Function The instrument performs cca. 15 measurements in each seconds. It’s too fast to see the changing of the measurement value. Here you can define the time periods by which the instrument displays the new measurement values.
  • Page 47 DT9502 Exit from the menu item 1. After finishing the setting, press the MENU button, to exit  the menu item, and you see this: (2. If you want to change the setting you have done just now, or if you just want to check what you have typed in, go on with the operation from point 3 of the Sequence of operations.)

  • Page 48: Tests (09. Menu Item)

    DT9502 7.11. Tests (09. menu item) Function Checking the display and the limit outputs. Sequence of operations 1. Enter the menu by typing either the user code or the supervisor code. The way the code should be type in is described in Chapter ...
  • Page 49 DT9502 Comment: the status you have selected here remains unchanged as long as you exit the menu, and the instrument starts measuring. 10. You can exit from the display test by pressing the  MENU button. You see the blinking mnemonic.
  • Page 50 DT9502 Exit from the menu  Press the MENU button. First the mnemonic (Save),  then the mnemonic (Exit) are shown on the display. With this the storing of the settings is completed. The instrument has exited the menu and goes on with the measurement.

  • Page 51: Changing The User Code (10. Menu Item)

    DT9502 7.12. Changing the user code (10. menu item) Function You can define new codes instead of the factory-defined user code. The code is an optional number within the range between 000 and 999. [Default factory setting: 000] Sequence of operations 1. Enter the menu by typing either the user code or the supervisor code.
  • Page 52 DT9502 Sequence of operations 9. If the codes written in for the first and second time are identical with each other, the device exits from the menu  item. You see this on the display. Do not forget the user code you have specified. If you forget it, defining another one is possible only by using a supervisor code for entering into the menu.

  • Page 53: Changing The Supervisor Code (11. Menu Item)

    DT9502 7.13. Changing the supervisor code (11. menu item) Function You can define new codes instead of the factory-defined supervisor code. The code is an optional number within the range between 000 and 999. [Default factory setting: 100] Sequence of operations 1. Enter the menu by typing the supervisor code.
  • Page 54 DT9502 Sequence of operations 9. If the codes type in for the first and second time are identical with each other, the instrument exits from the  menu item. You see this on the display. Do not forget the supervisor code you have specified. If you forget it, defining another one is possible in the service only.

  • Page 55: Display Operating Modes (12. Menu Item)

    DT9502 7.14. Display operating modes (12. menu item) Function The instrument has a 4-and-a-half-digit display. It is possible to switch it into a 3-and-a-half-digit display mode. In this case the display behaves like a 3-and-a-half-digit display during measurement. (The mnemonics are displayed in four digits).
  • Page 56 DT9502 Exit from the menu  Press the MENU button. First the mnemonic (Save),  then the mnemonic (Exit) are shown on the display. With this the storing of the settings is completed. The instrument has exited the menu and goes on with the measurement.

  • Page 57: Disable Displaying The Leader Zeros (13. Menu Item)

    DT9502 7.15. Disable displaying the leader zeros (13. menu item) Function Leader zero: the zeros that stand before an integer of no value. E.g. the instrument displays the value 5.2 together with the leader zeros:  (default factory setting), or without the leader ...
  • Page 58 DT9502 Exit from the menu  Press the MENU button. First the mnemonic (Save),  then the mnemonic (Exit) are shown on the display. With this the storing of the settings is completed. The instrument has exited the menu and goes on with the measurement.

  • Page 59: Clear Minimum And Maximum Values (14. Menu Item)

    DT9502 7.16. Clear minimum and maximum values (14. menu item) Function To clear the measured and stored mimimum and maximum values. Sequence of operations 1. Enter the menu by typing the supervisor code. The way the code should be type in is described in Chapter 7.1.

  • Page 60: Resetting The Default Settings (15. Menu Item)

    DT9502 7.17. Resetting the default settings (15. menu item) Function In this case all the settings are deleted, and the default factory setting is restored. Using this function makes sense in that case, when the settings of the instrument have changed so much, that it is easier to start the setting-up process from the default factory setting.

  • Page 61: Fault Rectification

    DATCON personnel. In the case of errors, it is recommended to notice of the displayed error message, as well as of the phenomenon seen. These information please communicate to the Datcon service personnel. 9. Dismounting 9.1. Dismounting procedure The steps described in Chapter 4.

  • Page 62: Appendix

    DT9502 10. Appendix 10.1. Technical specifications Intrinsic safety data Certification: BKI 15 ATEX 0028 X, BKI 15 ATEX 0028 X/1 Marking: II 1G Ex ia IIC T4 Ga -20 °C < Ta < 60 °C Ex safety data Supply and signal circuit 0...
  • Page 63 DT9502 Output parameters Transmitter output Output signal: 4-20 mA Overdriving: min: ~3.9 mA; max.: ~21 mA Accuracy: 0.02% (Ta=23 °C ±2/°C a kijelzett értékre vonatkoztatva: Limit outputs Output type: optically isolated passive switching transistor Current in OFF condition: I < 0.1mA (at 9 V) Voltage in ON condition: U <...

  • Page 64: Application Example

    DT9502 10.2. Application example 20171205-V3...

  • Page 65: Error Messages

    DT9502 10.3. Error messages The instrument has a sophisticated self-testing function; it is capable of detecting the majority of the errors. All mnemonics (code words) presented on the display comes from English expressions in abbreviated form. A/D overflow (Error: A/D Overflow) ...

  • Page 66: Messages Of Critical Errors

    10.4. Messages of critical errors Such errors are caused normally by structural injuries or damages. Repair is done by the service of Datcon. In case of error it is recommended to notice of the displayed error message, as well as of the phenomenon seen and communicate to the Datcon service personnel.

  • Page 67: Description Of The Menu Items

    DT9502 10.5. Description of the menu items You find a description of the menu items in the following part. A description on the handling of the menu is in Chapter 7. Settings. Display modes of limit output status (Limit Displaying) ...
  • Page 68 DT9502 The temperature value belonging to 20 mA  Any value may be assigned to it within the temperature Access is possible interval displayable on the display [Default factory setting:  by supervisor code only 600.0 °C] Averaging number (Averaging Number) ...
  • Page 69 DT9502 Changing the Supervisor Code (Supervisor Code)  The new Supervisor Code must be typed in twice, in order Access is possible  to avoid any typing errors. The mnemonic (Re- by supervisor code only Type) warns you to type the code for the second time, after ...

  • Page 70: Messages And Error Messages During Setting Up

    DT9502 10.6. Messages and error messages during setting up The following mnemonics may displayed when the settings  are being performed. The value you have defined is lower than permissible  (Low Limit) The instrument has replaced the value you have defined to the permitted lowest value.

  • Page 71: Setting Up The Apparatus (Practical Exercise)

    There is a measurement loop, in which the 4 mA current should be assigned to 100°C, and 20 mA should be assigned to 200°C. Let’s have the following settings for DT9502: • The temperature value belonging to the 4 mA current: 100.0 °C.
  • Page 72 DT9502 Setting the temperature 1. Keep stepping with the ▲ button as long as you see this value that belongs to 20  menu item: 2. Enter this menu item by using the ENTER button. 3. By the ▲ button you may increase the value of the blinking digit.

  • Page 73: The Limit Outputs (Training Material)

    DT9502 10.8. The limit outputs (training material) Outputs The DT9502 has two optically isolated limit outputs that work independently from each other. The two outputs are equivalent. The following information and examples relate to output No.1. All these, however, are applicable for output No.2 too, without modification.
  • Page 74 DT9502 Limit output sub-menu  In the menu, the second menu-item ( ) contains all the parameters that relate to the limit output No.1. When you enter the menu, you get into a sub-menu. The menu structure is presented by the figure 7.2. Menu structure.
  • Page 75 DT9502 Detailed description of The operating modes define the conditions under which the the operating mode limit output should switch ON depending on the value of the measured and displayed physical signal.  Switched OFF  The output is always switched OFF. [default factory setting] ≥...
  • Page 76 DT9502 Example: Comment: the precondition for the following examples is Hysteresis = 0  that the output is in mode, that is, it switches ON when the measured value ≥ L1.LL (low limit). The input signal has an increasing characteristic, but ...
  • Page 77 DT9502 Example: If you want the output to switch ON only once in the case of Hysteresis > 0 the signal presented by the previous example, then set the  value of the hysteresis higher than 0. In practice the hysteresis value could be depend from two aspects: •...
  • Page 78 DT9502 Detailed description of the limit value operating modes   • : Switched OFF [this is the default factory setting] Independent of the measured temperature, the limit output is always switched OFF.   • : It switches ON, when: measured temperature ≥...
  • Page 79 DT9502   • : It switches ON, when the measured temperature < low limit The output switches ON, if the displayed temperature value . is lower than the numerical value defined as the parameter. . In this operating mode the value of the...
  • Page 80 DT9502   • : It switches ON, when (measured temperature value ≥ low limit) AND (measured value ≤ high limit) The output switches ON, when the displayed temperature . value ≥ numerical value defined as the parameter AND, besides, it is ≤ numerical value defined as the ....
  • Page 81 DT9502    • : It switches ON, when (measured temperature < low limit) OR (measured temperature > high limit) The output switches ON, when the displayed temperature is  lower than the numerical value defined as the parameter OR higher than numerical value defined as ...
  • Page 82 DT9502 Alarm mode The limit output may work in Alarm mode too. This mode is  switched ON by the parameter. According to the  default factory setting it is switched off ( ). When the  Alarm mode is ON (...
  • Page 83 DT9502 Example for the practical usage of the limit outputs Task: The limit output No.1 should control a heater, that switches ON when the temperature goes lower than 70 °C, and switches OFF when it goes higher than 90 °C.

  • Page 84: Atex Certification

    DT9502 10.9. ATEX Certification 20171205-V3...
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