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Heise DXD Series Installation And Operating Instructions Manual

Precision digital pressure transducer
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DXD Series - Precision Digital
Pressure Transducer
Installation and Operating Instructions
I&M 002-10106 DXD
Revision 1.6.1 2/28/06
1
Revision 1.6.1 2/28/06
Printed in USA

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Summary of Contents for Heise DXD Series

  • Page 1 DXD Series - Precision Digital Pressure Transducer Installation and Operating Instructions I&M 002-10106 DXD Revision 1.6.1 2/28/06 Revision 1.6.1 2/28/06 Printed in USA...
  • Page 2 Revision 1.6.1 2/28/06 Printed in USA...

  • Page 3: Table Of Contents

    7.4.4 Determine the Full Scale Pressure Range ................12 7.4.5 Get a Pressure Reading ......................12 7.4.6 Get the Heise Label ......................... 12 7.4.7 Get and Change the Current User Label ................13 7.4.8 Get and Change the Current User Tare Value ................ 13 Section 8.0 Field Calibration .........................
  • Page 4 Section 9.0 DXD Command Library ......................15 9.1 Communications Settings ........................ 15 9.2 Communications Protocol ........................ 15 9.3 Command Library Mnemonics ......................16 ERROR CODES ..........................20 Section 10.0 DXD Command Summary ....................... 21 10.1 Read Command Summary ......................21 10.2 Write Command Summary ......................

  • Page 5: Section 1.0 Introduction

    •Instruments used in locations where EMI/RFI Section 1.0 Introduction conditions exist may exhibit erroneous perfor- mance. Congratulations on your purchase of a DXD Series Digital Pressure Transducer. This transducer provides • These instruments are not explosion proof or unmatched performance and value. Innovative intrinsically safe.

  • Page 6: Certificate Of Calibration

    4.42 Serial port converter. The Serial port converter 4.2 Certificate of Calibration consists of electronics housed in a standard DB25 connector’s shell assembly. It has a standard DB25 Each DXD is provided with a report of calibration female RS-232C socket on one end and two RJ11/4 traceable to NIST.

  • Page 7: Section 5.0 Installation

    9314C 24 AWG. Other cables and connector combi- Section 5.0 Installation nations can be fabricated using user supplied, multiconductor wire and connectors. Minimum 26 The Installation of the product has three basic steps, AWG wire is recommended. which include making pressure connections, system wiring (connecting communication and power cables 5.2.3 Cable length and transmission speed.
  • Page 8 Table 1. Switchcraft EN3 Pin Assignments for RS232 Configuration. Table 3. RJ11 Connector Functions for RS232 Systems Host Destination DXD Definition Digital Output Digital Input Table 2. ITT Cannon KPT03 Pin Assignments for RS232 Configuration. Revision 1.6.1 2/28/06 Printed in USA...

  • Page 9: Wiring Installation For Rs485 Systems

    Table 4. Switchcraft EN3 Pin Assignments for 5.4 Wiring Installation for RS485 Systems RS485 Configuration Required Equipment RS485 card. A full duplex RS485 card is required for setting up an RS485 system. This type of card is available from a wide variety of manufactures. Factory experience is limited to National Instruments P/N AT485/2 although any fully compliant card should work.

  • Page 10: Section 6.0 Installing And Running Utility Software

    ond). After this is done, you can save the configura- Section 6.0 Installing and Running Utility Soft- tion using a name like “DXD” and simply open it by ware name without need to re-configure it each time it is used. This application will work with RS232 ports, Computer Requirements.

  • Page 11: Communication And Command Basics

    7.2.1 Communication and Command Basics 7.4.1 Determine and Set the Current Address There are some basic conventions and characteris- The value retrieved with the AD (Address) command tics which must be observed in order to communicate is comprised of 7 alphanumeric characters (including with the DXD.

  • Page 12: Determine The Pressure Type

    12. Next click on the Call button and select Discon- nect then Connect (this activates any changes made 1. The value retrieved with the HL (Heise Label) to HyperTerminal’s communications properties). command is the serial number assigned to the unit during manufacturing and can not be changed.

  • Page 13: Get And Change The Current User Label

    2. The DXD will respond by transmitting the following message: HL=000XXX (where X represents your DXD’s actual serial number ) 7.4.7 Get and Change the Current User Label 1. The value retrieved with the UL (User Label) command is comprised of up to 16 alphanumeric characters which can be modified by the user to form a descriptive tag or identification name.

  • Page 14: Section 8.0 Field Calibration

    Section 8.0 Field Calibration by sending the following command: #01US[CR] Calibration adjustments on the DXD are limited to 6. Next calculate the new value for US by dividing the adjusting zero and span. A high precision primary known pressure generated with the pressure stan- standard (50 ppm or better) is required for the span dard by the displayed value, for example, 30/ adjustment on gauge, vacuum and compound...

  • Page 15: Section 9.0 Dxd Command Library

    Section 9.0 DXD Command Library The DXD digital pressure transducer employs a simple ASCII character based protocol for communications. A DXD UNIT cannot initiate this communication process. A host device, i.e. a computer, terminal or PLC device must be used to initiate communications by querying the DXD. Multiple DXD’s on the same communication bus are addressed sequentially so each unit must have a unique, two digit address between 01 and 99.

  • Page 16: Command Library Mnemonics

    9.3 Command Library Mnemonics The same command mnemonic is used for both read and write functions. The destinction between read and write commands is that read commands use uppercase characters and all write commands use lowercase characters. UNIT ADDRESS Command Description: Reads or writes the DXD Unit’s address (valid address values are from 01 through Command Type : Dual (READ/WRITE) Command Read Command Syntax:...
  • Page 17 READ FROM EEPROM ADDRESS Command Description: Returns a specified EEProm location’s value in decimal format, as a 3 digit value ranging from 000 to 255. Command Type: READ Only Command Read Command Syntax: #01ER005[CR] ……Read from EE location 005 Typical Read Command Response: Displays the EEPROM location contents as a 5-character string as shown below: Char.
  • Page 18 Command Type: READ Only Command Read Command Syntax: #01HL[CR] Typical Read Command Response: Outputs the Heise Label as a 11-character string as shown below Char. Position Response Char. H PSI READING Command Description: Returns the unit’s current pressure reading in PSI.
  • Page 19 SENSOR TEMPERATURE Command Description: Returns the unit’s current temperature reading in °C Command Type: READ Only Command Read Command Syntax: #01ST[CR] Typical Read Command Response: Outputs the Sensor Temperature Reading as a 13-Character string as shown below. Char. Position 1 2 3 4 5 6 7 8 9 10 11 12 13 Response Char.

  • Page 20: Error Codes

    Typical Read Command Response: Output’s the User Tare Value as a 13-Character string as shown below. Char. Position 1 2 3 4 5 6 7 8 9 10 11 12 13 Response Char. U T = + 0 0 0 0 0 0 CR LF Write Command Syntax: #01ut+0000.12[CR]...

  • Page 21: Section 10.0 Dxd Command Summary

    160 Bytes of EEPROM Mem 65 X 10 lines* Read from EE #01ER005[CR] 010[CR][LF] Full Scale Value #01FS[CR] FS=+0250.00[CR][LF] Firmware Version #01FV[CR] V2.15[CR][LF] Heise Label #01HL[CR] HL=000304[CR][LF] PSI Reading #01PS[CR] PS=+000.040[CR][LF] Pressure Type #01PT[CR] PT=V[CR][LF] Raw Counts #01RC[CR] Sensor Temperature #01ST[CR] ST=+002.142[CR][LF]...

  • Page 22: Section 11.0 Dxd Product Specification

    Section 11.0 DXD Product Specification A/D Resolution: 23 bit plus sign Sigma/Delta inter- Accuracy:±0.02% F.S. total error band nally reduced to 50,000 counts. from 10°-30°C (50°-86°F) ±0.04% F.S. 0°-50°C (32°-122°F) Output Signal: ASCII digital ±0.05% F.S. –10°-70°C (14°-158°F) Output Electrical: RS485 full duplex – asynchronous Temperature Effects: serial interface up to 32 units or RS232 full duplex –...

  • Page 23: Appendix A - Resolution By Pressure Range

    Appendix A - Resolution by Pressure Range Revision 1.6.1 2/28/06 Printed in USA...

  • Page 24: Appendix B - System Performace Response Time

    Appendix B - System Performace Response Time Revision 1.6.1 2/28/06 Printed in USA...

  • Page 25: Appendix C - Rs485 System Schematic

    Appendix C - RS485 System Schematic Revision 1.6.1 2/28/06 Printed in USA...
  • Page 26 Appendix D - ASCII Character Code Table Binary Hex ASCII Binary Hex ASCII Binary Hex ASCII Binary Hex ASCII 10000000 00000000 (NUL) 01000000 11000000 10000001 11000001 00000001 (SOH) 01000001 10000010 11000010 00000010 (STX) 01000010 10000011 11000011 00000011 (ETX) 01000011 10000100 11000100 00000100 (EOT)

  • Page 27: Index

    Index Symbols (SERIAL NUMBER) 18 A/D converter 5 A/D Resolution 22 AC Adapter 6 Accessories 6 Accuracy 22 AD (Address) 11 ASCII Data Format 22 ASME B40.1 5 attention character 11 BAUD RATE 16 Bendix PTO 6 Bits Per Second Rates 15 BPS 22 BR (Baud Rate) 11 Cable length 7...
  • Page 28 FIRMWARE VERSION 17 fitting 7 Flow Control 15 FS (Full Scale) 12 FULL SCALE 17 General Dimensions 22 HEISE LABEL 18 HL (Heise Label) 12 Housing Materials 22 Hyperterminal 10 Mnemonics 16 Overpressure Capability 22 Parity 15 Power Requirement 22...
  • Page 29 sealed housing 7 SENSOR TEMPERATURE 19 Sensor Type 22 Signal Stability 22 Software 10 Span Adjustment 14 ST 19 Stop Bits 15 String Length 21 Switchcraft 6 Temperature Effects 22 Theory of Operation 5 Turnaround Time 22 UL (User Label) 13 UNIT ADDRESS 16 Update Rate 22 update rate 5...

  • Page 30: Appendix D - Warranty And Limitation Of Liability

    Appendix D - Warranty and Limitation of Liability All Heise Products and Parts carry a warranty against defective material and workmanship for a period of one (1) year from date of shipment. A. Seller warrants that its products and parts, when shipped, and its work (including installation, construction...
  • Page 31 Revision 1.6.1 2/28/06 Printed in USA...
  • Page 32 For more information contact: Ashcroft Inc. 250 East Main Street Stratford, CT 06614-5145 203.378.8281 203.385.0402 (fax) www.heise.com Specifications subject to change without notice. Subject to standard terms and conditions of sales. © Ashcroft Inc 2/1/06 Revision 1.6.1 2/28/06 Printed in USA...

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