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For the name and location of the nearest sales 

representative, contact the Stratford sales office.

All specifications are subject to change without notice.  
All sales subject to standard terms and conditions.  
© 2016 Ashcroft Inc. 10/16  I&M002-10106 Rev. C

Visit our web site at www.heise.com

World Headquarters

Ashcroft Inc. 

250 E. Main Street

Stratford, CT 06614-5145  

U.S.A.

Tel: (203) 378-8281

Fax:  (203) 385-0402 

(Domestic)

Fax:  (203) 385-0357 

(International)

email: [email protected] 

www.heise.com

Summary of Contents for DXD Series

Page 1: ...rms and conditions 2016 Ashcroft Inc 10 16 I M002 10106 Rev C DXD Series Precision Digital Pressure Transducer Operation and Maintenance Manual SECTION 1 Part 1 Installation And Operating Instructions...

Page 2: ...ii...

Page 3: ...11 Section 5 4 1 Pin Functions and Cable Fabrication for RS 485 Compatible Systems 12 Table 4 Switchcraft EN3 Pin Assignments for RS 485 Configuration 10 Table 5 ITT Cannon KPT03 Pin Assignments for...

Page 4: ...CW Cm Of Water Reading 34 FW Feet Sea Water Reading 35 HP Hectopascal Reading 35 IM Inches Of Mercury Reading 35 IW Inches Of Water Reading 35 KP Kilopascal Reading 36 MB Millibar Reading 36 MM Mm Of...

Page 5: ...on high pressure gas or potentially hazardous service such as oxygen should be carefully selected in accordance with the recommendations of ANSI ASME 40 100 2013 Only approved explosion proof or intr...

Page 6: ...data logging and pressure display capa bilities Win7 and WinXP compatible LabVIEW drivers along with the LabVIEW Runtime Engine are also available The following accessory items are available individu...

Page 7: ...B25 pin connector to a com puter or terminal serial port having a DB9 connector The 25 foot cable connects the DXD to an Expander Module see below or directly to a Serial Port Converter The cable is p...

Page 8: ...nector pin removed can be specified at time of purchase if required The effect is approximately 027 PSI per degree Fahrenheit change in ambient temperature This is not a factor with absolute pressure...

Page 9: ...ly The DXD is available with a standard Switchcraft EN3 elec trical connector or an optional ITT Cannon KPT03 Bendix PTX compatible electrical connector or a Mini B USB female connector Typical RS 232...

Page 10: ...IB LOCATED AT BOTTOM OF RECESS INDEX RIB IS ALIGNED WITH INDEX GROOVE ON OPPOSITE END OF CONNECTOR NO PIN IN THIS POSITION FOR VENTED CONNECTOR A B C D E F G H N A SUPPLY N A DIGITAL OUTPUT N A DIGITA...

Page 11: ...roft Power Supply A DC Power Supply capable of providing 12 to 24 VDC and 15 mA per Transducer is required 8 7 6 5 4 3 2 1 SWITCHCRAFT CONNECTOR PIN I D ITT CANNON CONNECTOR PIN I D DIGITAL OUTPUT DIG...

Page 12: ...supplied with either Switchcraft or Cannon connectors as specified at time of purchase The pin identification and assignments are shown in Tables 4 and 5 Table 4 Switchcraft EN3 Pin Assignments for RS...

Page 13: ...J45 six conduc tor can be employed depending on the application distance EMI RFI speed Daisy chain interconnection is recommended with minimum drop lengths See RS 485 schematic appendix C Table 5 ITT...

Page 14: ...20 05 78 SECTION 5 5 USB APPLICATIONS SECTION 5 4 1 PIN FUNCTIONS CABLE FABRICATION FOR RS 485 COMPATIBLE SYSTEMS Various cable components are available from the factory for assembling an RS 485 netwo...

Page 15: ...EN BLUE WHITE BLUE ORANGE WHITE ORANGE SUPPLY COMMON SUPPLY RXD RXD TXD TXD 7 2 5 6 3 4 9 PIN FEMALE D TYPE CONNECTOR BENDIX STYLE CONNECTOR ITT CANNON RJ45 JACK SWITCHCRAFT CONNECTOR MODULAR ADAPTER...

Page 16: ...es HyperTerminal as the reference but should be adaptable to any other termi nal emulator provided you are familiar with the setup charac teristics of those programs The command syntax illustrated in...

Page 17: ...sign is always followed by a two character numeric address 01 through 99 Note that with one DXD connected you can substitute a double asterisks ASCII 42 if you don t know the current address value Th...

Page 18: ...om mand in the HyperTerminal window 01BR CR 2 The DXD will respond with the following message BR 19200 3 To change the current baud rate you must first change the DXD s settings then change the com po...

Page 19: ...00 000 or the value of the current pressure 1 The value retrieved with the HL Heise Label command is the serial number assigned to the unit during manufacture and cannot be changed To read the value s...

Page 20: ...pressure standard and apply full span pressure 30 psi in this example 3 Next retrieve the current pressure reading by sending the following command 01PS CR 4 The result will be something like this PS...

Page 21: ...pha command mnemonic represent ing the command being issued A carriage return ASCII 13 is used to terminate the command Each write command is initiated with a pound sign ASCII 35 Following the pound s...

Page 22: ...00 psi 2X Range Above 1000 psi 1 5X Range Pressure Types Gauge absolute vacuum and compound Pressure Inlet Types Standard Ranges up to and including 5000 psi Male NPT Ranges over 5000 psi 9 16 18 UNF...

Page 23: ...5 5 953 8 9 16 18 UNF 1 100 4 175 1 500 DIA MS33656 Flare Fitting 4 175 1 118 1 500 DIA 1 8 Swagelock 1 500 DIA 4 175 2 347 VCR 509 1 500 DIA 5 784 4 175 1 100 1 4 NPT MALE 1 100 1 500 DIA 4 175 5 953...

Page 24: ...T User Tare 33 UZ User Zero 34 BA Bar Reading 34 CW Cm Of Water Reading 34 FW Feet Sea Water Reading 35 HP Hectopascal Reading 35 IM Inches Of Mercury Reading 35 IW Inches Of Water Reading 35 KP Kilop...

Page 25: ...to 9 999 of 50 000 counts and sets the band of counts change tolerance to the averaging routine If a change outside of the FB limits is seen the averaging registers are reset and the new pressure rea...

Page 26: ...aracters Legacy mode 10 FS FULL SCALE read function FS 007500ackcrlf 14 characters ack nak mode FS 007500Acrlf 14 characters A N mode FS 007500crlf 13 characters Legacy mode 10a Note that 2 15 firmwar...

Page 27: ...ssified as one of two types 1 Read Commands These always return a value Write Commands In the ack nak mode an ack or nak CR LF will always be returned In the A N error mode an A or N CR LF will always...

Page 28: ...orting mode An ack preceding the CR LF means a valid response no errors A nak preceding the CR LF means one or more Error bits have been set The specific error s generated can be seen by sending the E...

Page 29: ...Command Description Returns the first 160 bytes of EEProm memory as decimal values The Values returned are formatted 16 bytes per line with ack nak carriage return line feeds appended at the ends Com...

Page 30: ...plied ER Typical Read Command Response ew WRITE TO EEPROM ADDRESS Note Unlock the Eprom prior to using this command Command Description Writes a value to the current EEProm address The current EEProm...

Page 31: ...Channel Offset to 089 000 000 Sets the Vi Channel Gain 089 000 000 Sets the p_calc gain to 1 000 Sets the User Span to 1 000 Sets the Full Scale Value to 100 00 Sets the Full Scale Decimal Point Posi...

Page 32: ...Band Value as a fixed length 10 character string as shown below FB Typical Read Command Response Shown as 9 999 fb FILTER BAND VALUE Command Description Writes the band to EEProm Command Type Dual REA...

Page 33: ...nd Read Command Syntax 01PS CR Typical Read Command Response Outputs the PSI reading as a fixed length 14 character string as shown below PS Typical Read Command Response PT PRESSURE TYPE Command Desc...

Page 34: ...pical Read Command Response ul USER LABEL Write Command Syntax 01ulDXD Transducer 2 CR Typical Write Command Response Fixed Length 3 bytes Char Position 1 2 3 Response Char ACK CR LF The written strin...

Page 35: ...01UT CR Typical Read Command Response Outputs the User Span value as a fixed length 14 character string as shown below UT Typical Read Command Response ut USER TARE Write Command Syntax 01ut 0000 12 C...

Page 36: ...le a USER ZERO value of 0000 12 would be written to zero out a PS reading of 0000 12 if the current USER ZERO value was 0000 00 AUXILLIARY ENGINEERING UNITS BA BAR READING Command Description Returns...

Page 37: ...ssure reading in Inches of Mercury Command Type READ Only Command Read Command Syntax 01IM CR Typical Read Command Response Outputs the inches of mercury Reading as a fixed length 14 character string...

Page 38: ...Command Description Returns the unit s current pressure reading in Megapascal Command Type READ Only Command Read Command Syntax 01MP CR Typical Read Command Response Outputs the Megaepascal Reading...

Page 39: ...ACK CR LF US 0000 01 A CR LF AEU COMMANDS SUMMARY Cmd Description Syntax Response Response BA BAR Reading 01BA CR BA 03 4582 ACK CR LF BA 03 4582A CR LF CW CM of Water Reading 01CM CR CW 03532 7 ACK...

Page 40: ...CTORS Engineering Scale Unit Factor BA 0689476 CW 70 433 FW 2 2457 HP 68 9476 IM 2 03602 IW 27 730 KP 6 89476 MB 68 9476 MM 51 7149 MP 00689476 NP N A MODE BYTE BIT DXD Mode Byte location 001 in EEPro...

Page 41: ...l numeric value a o carries the value of 0 The weighting is as follows 76543210 bit position numeric value 00000001 1 00000010 2 00000100 4 00001000 8 00010000 16 00100000 22 01000000 64 10000000 128...

Page 42: ...mmand set no echo bit no noise test DETAILED EXPLANATION OF THE FA FB COMMANDS The DXD offers a powerful filtering algorithm to smooth out undesirable fluctuations or noise in the pressure source The...

Page 43: ...d their effect on the bandwidth Filter Band Values FB Effect as Values of Full Scale 0001 0 000 FS 0002 0 002 FS 0050 0 05 FS 0250 25 FS 1000 1 0 FS 5000 5 0 FS 9999 9 999 FS To change the current val...

Page 44: ...A 0689476 5002 5 344 90 Bar CW 70 433 4055 3 285628 cm water FW 2 2457 4055 3 9107 feet of water HP 68 9476 4051 1 279314 Hecto Pascal IM 2 03602 4033 7 8212 In Hg IW 27 73 4014 1 111311 In Water KP 6...

Page 45: ...update time column under mili seconds represents updates which include transmit and receive communications for a PS command at 115 2 K baud The column to the right of that represents update rates with...

Page 46: ...iscounting transmit and receive times in less than 200 microseconds Substituting an available alternate engineering unit AEU in place of Ps or Np is also available but at the expense of an additional...

Page 47: ...f Water Reading 01Cw CR Cw 03532 7 ACK CR LF Cw 03532 7 A CR LF Fw 400 s Feet Sea Water Reading 01Fw CR Fw 0112 63 ACK CR LF Fw 0112 63 A CR LF Hp 400 s Hectopascal Reading 01Hp CR Hp 03458 2 ACK CR L...

Page 48: ...it 5 error status reverts to the standard DXD definition of error status handling COMMAND STRUCTURE IN ATS MODE 01cfATS Be advised that letters in in command and response strings indicate non printabl...

Page 49: ...n in ATS and DXD is the same 9 01cfATS Change data format to ATS mode 8 n 1 This command is blind and will have no response string regardless of present mode of operation 10 01cfDXD Change data format...

Page 50: ...ost If the DXD responds to a command faster than the HOST can release it s trans mit line the information going into the host s receiver will be garbled because it s transmitter is causing contention...

Page 51: ...49 PAGE INTENTIONALLY BLANK...

Page 52: ...nge without notice All sales subject to standard terms and conditions 2016 Ashcroft Inc 10 16 I M002 10106 Rev C Visit our web site at www heise com World Headquarters Ashcroft Inc 250 E Main Street S...

Page 53: ...51 All specifications are subject to change without notice All sales subject to standard terms and conditions 2016 Ashcroft Inc 10 16 I M002 10107 DXD Setup Utility User Manual...

Page 54: ...52...

Page 55: ...s 58 3 0 Windows 58 3 1 Communication Properties 58 3 1 1 Port 59 3 1 2 Baud Rate 59 3 1 3 Data Bits 59 3 1 4 Parity 59 3 1 5 Stop Bits 59 3 2 Find DXD 59 3 3 Normal Speed Monitor 60 3 3 1 Selection o...

Page 56: ...follow the prompts 1 The USB interface is a virtual communication port to the Windows operating system Each DXD will be assigned its own Communication port number unlike the RS 232 and RS 485 interfa...

Page 57: ...Utility Information contained here assumes the user is familiar with basic navigation within the Microsoft Windows environment Use mouse or keyboard as described in sections 2 5 2 and 2 5 3 below to n...

Page 58: ...ity The File menu choices include Print Window and Exit as shown in Figure 3 Print Window opens the Microsoft Win dows print dialog for printing the current DXD Setup Utility screen to the printer of...

Page 59: ...igure 7 The Diagnostics selection opens a window for retrieving settings from connected trans ducers and provisions for saving and restoring EEPROM data The Command and Query selection opens a window...

Page 60: ...o Even and Stop Bits is set to 1 0 These are the standard factory default settings 12 Select Utility Command and Query 13 Enter noted DXD Address step eight 14 Select Write Unit Address in Command con...

Page 61: ...ansducer with which you are communicating must have the same setting that you choose here Avail able choices for data bits are shown in the graphic to the right The type of error checking you want to...

Page 62: ...ddress Heise label serial number user label firmware revision range and baud rate are added to the next row in the table When the table is filled to the bottom of the window a scroll bar becomes visib...

Page 63: ...h light the row in the table and click Remove Unit Monitoring of the pressures and temperatures is on the right side of the normal speed monitor window Select from the three tabs in the top left of th...

Page 64: ...pressure of the DXD pressure transducer specified by the DXD Address control is shown here with the selected Pressure Units The Add Unit and Remove Unit con trols are disabled when monitoring pressur...

Page 65: ...lect the row for the transducer to which the tare should be applied then click the Tare button Gauge or Digital Indicator Select the address of the trans ducer to which the tare should be applied via...

Page 66: ...sible rate Access this window via menu selection Monitor High Speed When first enter ing this window the pressure trend from the transducer at address one updates the chart if a transducer exists at a...

Page 67: ...chart and do not touch the mouse Note the rate of new values from the DXD pressure trans ducer is also dependent on the settings for update rate and baud rate Click the Stop Log button to stop logging...

Page 68: ...ts 1 To select the DXD pressure transducer from which to retrieve settings select DXD Address and Pressure Units on the upper left side of the window then click Get Settings Within a few seconds all i...

Page 69: ...ts 1 Use of this window is similar whether writing or reading Figure 18 The String Type control to the right of the Command String indicator allows selection between Normal Codes and Hex as ways to di...

Page 70: ...elec tion is made the ASCII Command String control shows to the right of the Command control for entering the read command string To write a command that sets a value enter the DXD Address and select...

Page 71: ...cribed in Section 3 3 3 The first two columns of the normal speed data file are always date and time respectively The number of data columns that follow are dependent on the number of transducers bein...

Page 72: ...pressure transducer is monitored at a time on the high speed monitor screen The top row contains the header information The first oldest data in the file begins at row two and the most recent newest d...

Page 73: ...71...

Page 74: ...nge without notice All sales subject to standard terms and conditions 2016 Ashcroft Inc 10 16 I M002 10106 Rev C Visit our web site at www heise com World Headquarters Ashcroft Inc 250 E Main Street S...

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