Digiquartz® Broadband Pressure Transducers And Depth Sensors
Contents
1. Digiquartz Data Storage DDS is an onboard serial EEPROM that contains calibration and transducer information This information can be accessed electronically to provide plug and play pressure transducer interchangeability An additional 4k bytes of DDS EEPROM memory has been allocated for customer use NOTE The sole purpose of DDS is to store transducer configuration information Use of DDS is optional and does not affect pressure measurement A minimum wire length of 6 inches is required to program DDS Ifone chooses to remove the DDS wires the recommended method is to cut the DDS wires to the desired length and protect the exposed leads with heat shrink WARNING Voltages outside the range of 0 3 to 4 3 volts must not be applied to the SDA Serial Data and SCL Serial Clock signal lines Doing so will damage the DDS serial EEPROM N CAUTION The maximum recommended length of the SDA and SCL wires is 18 inches Serial communication with the serial EEPROM may become unreliable at longer wire lengths 6 1 DDS Wires TABLE 6 1 DDS Wire Color Coding Wire Color Signal White Brown SCL White Violet SDA Black Ground 6 2 EEPROM Type The DDS serial EEPROM is a Microchip Technology 24LC64 or equivalent For interface information please consult the manufacturer s data sheet for this device which can be obtained at the Microchip Technology website at www microchip com 6 3 Chip Address The chip address2. 15 17 17 17 17 18 10 Calibration Warranty and Technical Support 9 1 Warranty Information 9 2 Technical Support and Service Pressure Unit Conversion Table A vi 23 25 25 26 27 uction This manual is intended to offer installation and start up information for Paroscientific Digiquartz Broadband Pressure Transducers and Depth Sensors with frequency outputs Digiquartz Broadband Pressure Transducers are precision instruments and as such must be used with a certain degree of care To ensure optimum performance please follow the installation and handling recommendations presented in this manual The latest manual revision along with additional product installation and operating information is available on the Paroscientific website at www paroscientific com 1 1 Conventions The following conventions are used throughout this manual Digiquartz Broadband Pressure Transducer Any Digiquartz Broadband Pressure Transducer with frequency outputs Digiquartz Broadband Depth Sensor Any Digiquartz Broadband Pressure Transducer with frequency outputs that is specially packaged for depth sensing applications N CAUTION is used to draw your attention to a situation that may result in an undesirable outcome but will not damage the unit WARNING is used to draw your attention to a situation that may result in permanent damage to the uni
3. 25 36 75 37 48 50 49 60 25 CONDITIONS The warranty period is from the date of shipment from Paroscientific to date of receipt at Paroscientific The customer must authorize the repair or replacement of the warranty claim within 45 days of notification by our Service Department No exceptions to the discount schedule or terms of this policy are allowed This warranty does not apply to units broken due to overpressure or excessive shock Warranty returned units become the property of Paroscientific upon replacement All barometers also have a three year limited warranty on long term stability Years 4 and 5 are covered by the above schedule WARRANTY AND TECHNICAL SUPPORT 25 9 2 Technical Support and Service Support is available via the Paroscientific website at www paroscientific com Technical information application notes software and product manuals are also available on our website Please check the Troubleshooting section of this manual if you are having problems with your instrument If you need assistance contact our sales and application engineers at support paroscientific com or 425 883 8700 For information on returning an instrument to us for disposal Waste Electrical and Electronic Equipment WEEE please see the Disposal section of our web site for documentation requirements and packaging instructions If you are sending an instrument to us for service please check our web
4. 867 5407 Rev P Web www paroscientific com Date February 2014 E mail support paroscientific com Paroscientific Inc
5. site under the service section for detailed instructions for shipping a unit to us for service 26 WARRANTY AND TECHNICAL SUPPORT Le 318V NOISYSANOD LINQ FUNSSIYIA L 00000010 91761010 01X 19008 7 T 0LX666286 C T 0LX 0Sv L T 0LX9L26L0 L zW N 10 Ed 0000 00L L 9LZ6L0 L 11900087 66625620 11 0SvL0 91761010 edy JO Jequi 0S990 86 0599086 k 6SSS 7 0656820 VEECCHLO 00000010 SUD vece eel VECEEE L OLS6SE k 900 6 0 8 9 6L0 OLS6SE LO 40 Jo H ww 98 98 98 98 SSL S ve 0000r Sc L LySLL6Y SGLEGSYE BH ul ZSL 7689 181v6 89 9690 07 6vLZ LS LC09 0 c L 9690 02 isd 0S9 9086 0S990 86 0000 00L COSS EL 06568 7 VEECCY L glo 6 zW N JO ed equ 10 Jequ zW9 6 40 Jo BH ww 6H ui isd GEI zWJUOW N Jg9sedo o 9H JJ0 JO AinoJew yun Jo eosed Jo JON zW WEJ9 Jo See ul unoJeul JO s uou zuyspundod OZH Som aa pun eanssaJg passag s lq 1_uosi Auoo PUN inss id LOL 318V 1 pun mss d poursop IY o1 31 JIDAUOI 0 1039 UOTSIOAUOD oq Aq onpeA onssoud eUIsIIO a AJANIN e 10398 UOISIOAUOD ounssoud ojeuidoudde y Apupi o qe3 dy Sutsr jrun oInssoid poursop pue pun ounssoud eUISIIO Iwp e e qui sip osn OL 9 qe uoISJ8AUO PUN n 28 This page intentionally left blank PRESSURE UNIT CONVERSION TABLE Paroscientific Inc 4500 148th Avenue N E Redmond WA 98052 USA Tel 425 883 8700 Document No G8203 Fax 425
6. 3F C2 Coefficient 16 37 0240 024F C3 Coefficient 16 38 0250 025F D1 Coefficient 16 39 0260 026F D2 Coefficient 16 40 0270 027F T1 Coefficient 16 41 0280 028F T2 Coefficient 16 18 DIGIQUARTZ DATA STORAGE DDS Table 6 2 DDS Memory Map Field No Address Description Field Length Hex Bytes Calibration Data 42 0290 029F T3 Coefficient 16 43 02A0 02AF T4 Coefficient 16 44 02B0 02BF T5 Coefficient 16 45 02C0 02CF Pressure Adder 16 46 02D0 02DF Pressure Multiplier 16 47 51 02E0 032F Reserved 80 Common Mode Calibration 52 0330 033F Common Mode 10 Coefficient Units 53 0340 034F A1 Coefficient 16 54 0350 035F A2 Coefficient 16 55 0360 036F B1 Coefficient 16 56 0370 037F PO Coefficient 16 Reserved 57 256 0380 05CF Paroscientific Reserved 592 257 512 1000 1FFF User Reserved 4096 DIGIQUARTZ DATA STORAGE DDS ecc c o 20 This page intentionally left blank DIGIQUARTZ DATA STORAGE DDS sories and Software 7 1 Model 735 Intelligent Display If your application requires RS 232 interface a display or transducer control and monitoring without a computer the Model 735 can be the best choice for you The Model 735 Intelligent Display performs all of the functions of the Model 745 High Accuracy Portable Standard when connected to a single external Digiquartz Transducer It features an intuitive front panel menu system two line display RS 232 communicati
7. Paroscientific Inc Digiquartz Pressure Instrumentation Digiquartz Broadband Pressure Transducers And Depth Sensors With Frequency Outputs User Manual The standard by which other standards are measured Technology Digiquartz Broadband Pressure Transducers And Depth Sensors With Frequency Outputs User Manual DOCUMENT NO G8203 REVISION P FEBRUARY 2014 Please visit www paroscientific com for the latest manual revisions COPYRIGHT 2014 PAROSCIENTIFIC INC Contents Introduction l1 Conventions eee Getting Familiar Daly Features i Cose elica ratori 2 2 Physical Inspection 2 3 Handling Precautions 24 Doc me ts trarne Installation 3 1 Pressure Ports and Buffer Tubes 32 Oil Filled vs Non Oil Filled Units Electrical 4 1 Characteristics Calculating Pressure and Temperature 5 1 Temperature Calculation 5 2 Pressure Calculation Digiquartz Data Storage DDS ECH DDS WIES oe cd ed deca RS ROS iena a 62 EEPROM Type ua dtu werd una Mesh ata 6 3 Chip dress usuta ampuh Eb unaqta 6 4 Memory Map a aaa ei Accessories and Software 7 1 Model 735 Intelligent Display 7 2 Digiquartz Intelligent Interface Board 7 3 Model 715 Display 7 4 Digiquartz Software Programs 13 13 15 15
8. e customers never recalibrate their instruments while others recalibrate periodically every 1 to 3 years A test report on long term stability of Digiquartz Barometers can be found on our web site Equally amazing stability has been shown with high pressure depth sensors in oceanographic deployments After 30 years and 100 000 transducers we have not detected a change in span scale factor with time Therefore the only correction made to instruments during recalibration is usually a small offset adjustment With no pressure applied to gauge or differential transducers the adjustment equals the indicated value For absolute instruments an effective adjustment especially on higher pressure ranges can simply be the difference between the indicated value and a single true pressure The calibration adjustments may be done via the PA Pressure Adder and PM Pressure Multiplier parameters on the Intelligent Instruments or via the C1 and T1 calibration coefficients for frequency output transducers Paroscientific s Quality Assurance System is certified to the requirements of the ISO 9001 International Quality Standard and provides consistency in our products and processes from design and development through production calibration test and servicing Our calibration system meets MIL STD 456624 and is traceable to NIST CALIBRATION 23 Digiquartz absolute transducers transmitters and portable standards with full scale pressure ranges of 500 p
9. f Digiquartz Instruments is a result of careful design meticulous manufacturing and extensive calibration and testing The construction operation and performance of Paroscientific transducers are described on our web site Calibration is performed by applying known pressures from primary standards to manifolds of transducers mounted in temperature chambers Two frequency or period output signals are sent from each transducer Pressure is measured with a force sensitive quartz crystal whose output period changes with applied load A second period output comes from a quartz crystal temperature sensor used for thermal compensation The manifold of transducer signals are multiplexed measured and the data fit to derive coefficients for the standard equation that characterizes the transducers The calibration coefficients provided with each transducer and the indicated pressure calculated will agree with the true applied pressure with a typical accuracy of 0 01 percent or better of transducer full scale over the full operational range of pressures and temperatures Digiquartz Intelligent Transmitters store the calibration coefficients in non volatile EEPROM to provide fully temperature compensated and linearized outputs on the bi directional RS 232 and RS 485 interfaces Because the recalibration period of Digiquartz Instruments depends on specific applications and user requirements we do not recommend a typical interval between calibrations Som
10. gineering units overpressure warning tare indicator user defined text messages and a horizontal analog bar graph showing pressure as a percentage of full scale pressure The Model 715 will respond to display commands from a Digiquartz transmitter a computer or other serial host on either the RS 232 or RS 485 port For stand alone operation it can display data whenever power is applied to the transmitter ACCESSORIES AND SOFTWARE 21 7 4 Digiquartz Software Programs Paroscientific provides software programs that simplify common measurement and configuration tasks The latest versions of these and other software programs are available at the Paroscientific web site www paroscientific com Digiquartz Broadband Pressure Transducers require an intelligent board or Model 735 Intelligent Display to interface with PC based Digiquartz Software A transducer can also interface directly with third party data acquisition systems that measure frequency signals In this case the user would need to develop their own software to acquire and process the signal output from the transducer 7 4 1 Digiquartz Interactive 2 0 DQI 2 0 Digiquartz Interactive 2 0 is a Windows program that makes it easy to communicate with and configure DIGIQUARTZ Intelligent devices We encourage you to install DQI 2 0 and use it to verify proper device operation configure your device take measurements and experiment with its functions DQI 2 0 is separated into tw
11. id filled pressure lines are being used These effects can be minimized by keeping the transducer pressure port and the pressure source at the same elevation or by making an offset correction to compensate for the pressure head NON OIL FILLED TRANSDUCERS Non oil filled transducers are intended for use in gas media applications and should never be used in liquid media applications WARNING If your transducer and buffer tube are not oil filled do not apply pressurized liquid media to the unit Liquid may contaminate the unit and may adversely affect the accuracy of the unit It is not possible to completely remove most liquids from the transducer once they have been introduced 12 INSTALLATION ical 4 1 Characteristics PRESSURE SIGNAL Signal Type Amplitude Source Impedance Range TEMPERATURE SIGNAL Signal Type Amplitude Source Impedance Range SUPPLY VOLTAGE AC coupled nominal square wave Nominal 4V peak to peak Less than 750 Ohms Nominal 10 frequency change within the band of 30 kHz to 42 kHz AC coupled nominal square wave Nominal 4V peak to peak Less than 750 Ohms Nominal 45 ppm C sensitivity within the band of 168 kHz to 174 kHz Refer to Specification Control Drawing supplied with transducer CURRENT CONSUMPTION Refer to Specification Control Drawing supplied with transducer WARNING Power signal ground are connected to the transducer pressure fitting and in some cases
12. nal noise and diminished sensor performance 14 ELECTRICAL lating Pressure and Temperature Internal sensor temperature and applied pressure are calculated from period measurements of the two transducer output signals The equations and coefficients used to perform these calculations are described below Refer to the Calibration Coefficient Sheet for the actual coefficient values for your transducer 5 1 Temperature Calculation The following equation is used to calculate internal sensor temperature T Y U YU Y4U Where T Temperature C Uo temperature signal period microseconds at 25 C U temperature signal period microseconds Uo microseconds Temperature coefficients Uy Y Y Y3 5 2 Pressure Calculation The following equation is used to calculate pressure P C 1 T Tau2 1 D 1 Tg2 Tav Where P pressure Tau pressure signal period microseconds U temperature signal period microseconds Uo microseconds C C CU C4U2 D D D U To 7 Tj TsU T3U TAU T4U Pressure coefficients C C5 C4 Dj D Ti T gt Ts T4 Ts CALCULATING PRESSURE AND TEMPERATURE oa 16 This page intentionally left blank CALCULATING PRESSURE AND TEMPERATURE uartz Data Storage DDS Most Digiquartz Broadband Pressure Transducers include the Digiquartz Data Storage DDS feature Transducers with DDS can be identified by the presence of the wires described in Section 6 1
13. o main sections Configuration and Monitoring and Digiquartz Terminal The Configuration and Monitoring section provides a means of viewing changing storing and retrieving the configuration parameters of your instrument It also allows you to take measurements and display them numerically and in a real time graph Measurement data may also be logged to a text file in a format that can be easily imported into popular PC programs such as Microsoft Excel or Word The Digiquartz Terminal section allows you to interactively communicate with your instrument using text based commands Measurement data may be logged to a text file in a format that can be easily imported into popular PC programs such as Microsoft Excel or Word 7 4 2 Digiquartz Assistant DQA DIGIQUARTZ Assistant is a Windows data logging program With DQA you can log time stamped measurement data from up to 8 DIGIQUARTZ Intelligent devices Measurement data can also be displayed in real time in an automatically scaled graph Data is stored to a text file in a format that can easily be imported into popular PC programs such as Microsoft Word or Excel Refer to the help function in DQA for more information 22 ACCESSORIES AND SOFTWARE ration Paroscientific is the leader in the high precision pressure measurement field where high resolution accuracy reliability ruggedness long term stability and low cost of ownership are important requirements The high performance o
14. of the DDS serial EEPROM is fixed at binary 101 Any device used to communicate with DDS must be able to select the proper chip address DIGIQUARTZ DATA STORAGE DDS 17 6 4 Memory Map The information stored in DDS memory is organized as shown in the table below All data are stored in fixed length fields in ASCII format All used fields are padded from the end of the data to the end of the field with space characters ASCII 32 decimal 256 bytes of data storage starting at address 1000 hex has been reserved for your use N CAUTION Do not store data at addresses below 1000 hex This memory space is reserved for Paroscientific use Table 6 2 DDS Memory Map Field No Address Description Field Length Hex Bytes General Information 1 0000 000F EEPROM Revision 16 2 6 0010 005F Customer Information 80 7 11 0060 00AF Reserved 80 Sensor Information 12 00B0 00BF Serial Number 16 13 00C0 00CF Part Number 16 14 15 00D0 00EF Model Description 32 16 17 00F0 010F Pressure Range 32 18 19 0110 012F Temperature Range 32 20 0130 013F Report Date 16 21 0140 014F Pressure Medium 16 22 0150 015F Sensor Type 16 23 27 0160 01AF Reserved 80 Calibration Data 28 01B0 01BF Calibration Date 16 29 01C0 01CF Pressure Units 16 30 01D0 01DF Temperature Units 16 31 01E0 01EF UO Coefficient 16 32 01F0 01FF Y1 Coefficient 16 33 0200 020F Y2 Coefficient 16 34 0210 021F Y3 Coefficient 16 35 0220 022F C1 Coefficient 16 36 0230 02
15. on port tare capability and transducer connection terminals The Model 735 can be powered from its AC adapter or for up to 20 hours from AA alkaline batteries Configuration and data logging software provided by Paroscientific allows the user to configure and log data from Model 735 via RS 232 7 2 Digiquartz Intelligent Interface Board The Digiquartz Intelligent Interface Board is a microprocessor based interface that processes the frequency outputs from a single Digiquartz transducer It provides fully temperature compensated pressure measurement values in the user s choice of engineering units Dual RS 232 and RS 485 serial interfaces are provided The user may program the sample rate integration time engineering units and communication parameters via the serial interfaces Multiple transducer board combinations can be connected together to form an RS 232 serial loop or RS 485 multi drop network Set up and data acquisition software provided by Paroscientific can be used with the Digiquartz Intelligent Interface Board The Digiquartz Intelligent Interface Board is compatible with the Model 715 display 7 3 Model 715 Display The Model 715 displays pressure and temperature data from all Paroscientific Intelligent Transmitters with firmware versions R1 00 and later The two line 16 character backlit alphanumeric liquid crystal display is set up with transmitter commands Display functions include pressure and temperature values with en
16. quired to make and break these connections N CAUTION It is recommended that pressure fittings be installed finger tight then tightened an additional turn to complete the pressure seal 9 waRNING Removing the buffer tube is NOT recommended as it is an integral part of the mechanical shock protection of the transducer Connections made directly to the transducer pressure fitting without using the buffer tube may result in irreversible damage to the unit If damage occurs it will be necessary to retum the unit to Paroscientific for repairs or replacement not covered under warranty INSTALLATION 0000 3 2 Oil Filled vs Non Oil Filled Units OIL FILLED TRANSDUCERS Transducers that are to be used to measure liquid media pressures are oil filled at Paroscientific Transducers that are oil filled should never be used in gas media applications Oil fill and bleed all pressure lines that are to be connected to an oil filled transducer The same oil used to fill the transducer should be used to fill the pressure lines consult the transducer Specification Control Drawing for details CAUTION If your transducer and buffer tube are oil filled do not pull a vacuum or apply pressurized gas to the unit Doing so could allow bubbles to form in the pressure lines and transducer which will adversely affect the accuracy of the unit N CAUTION Pressure head effects result in zero offsets These effects are more pronounced when liqu
17. rements 10 GETTING FAMILIAR lation Digiquartz Broadband Pressure Transducers can generally be mounted in any orientation Mounting hole patterns for units so equipped can be found on the Specification Control Drawing SCD supplied with the unit N CAUTION Pressure head effects vary with transducer orientation and result in zero offsets These effects are more pronounced when liquid filled pressure lines are being used These effects can be minimized by keeping the transducer pressure port and the pressure source at the same elevation or by making an offset correction to compensate for the pressure head 3 1 Pressure Ports and Buffer Tubes Digiquartz Broadband Pressure Transducers typically include a nylon or stainless steel buffer tube The buffer tube is an integral part of the mechanical shock protection system of the transducer Parker A Lok or equivalent nut and ferrule compression tube fittings are used on most Digiquartz Broadband Pressure Transducers Series 2000 devices require 1 8 diameter tubing fittings for installation while Series 3000 and 4000 use 1 16 diameter tube fittings Two 7 16 wrenches are required when making or breaking any 1 8 inch pressure fitting The first wrench is used to stabilize the stationary fitting and the second wrench is used to turn the other fitting High pressure transducers Series 3000 and Series 4000 use the 1 16 Parker A Lok or equivalent fittings Two 5 16 wrenches are re
18. s steel buffer tube is an integral part of the transducer s shock isolation system and should not be removed GETTING FAMILIAR ecc c e 2 4 Documents The following documents are supplied with each Digiquartz Broadband Pressure Transducer SPECIFICATION CONTROL DRAWING SCD The SCD is a drawing that contains information about the performance characteristics environmental specifications and physical dimensions of the unit CALIBRATION COEFFICIENT SHEET The Calibration Coefficient Sheet contains the calibration coefficient values and the associated modeling equations see Section 5 The calibration coefficients are derived from a calibration test run and are unique to each Digiquartz Broadband Pressure Transducer CERTIFICATE OF CALIBRATION The Certificate of Calibration identifies the primary pressure standard s used to calibrate the Digiquartz Broadband Pressure Transducer CERTIFICATE OF CONFORMANCE The Certificate of Conformance certifies that the Digiquartz Broadband Pressure Transducer was manufactured in accordance with the applicable engineering drawings process specifications procedures and specification control drawing It also certifies that the Digiquartz Broadband Pressure Transducer was tested against NIST traceable primary pressure standards temperature standards and pressure transfer standards that are regularly checked and calibrated per documented Paroscientific procedures in accordance with ISO 9001 requi
19. sia or less come with a certificate for one FREE inspection calibration check zero adjustment and new Certificate of NIST Traceability within the first two years of shipment 24 CALIBRATION nty and Technical Support 9 1 Warranty Information DIGIQUARTZ TRANSDUCERS 5 YEAR EXTENDED LIMITED WARRANTY Paroscientific highly values our customers A Quality Management System that is certified to the requirements of the ISO 9001 International Quality Standard provides consistency in our products and processes from design and development through production calibration test and servicing Our quality system and commitment to excellence ensure customers of outstanding products and services As a result we offer a one year warranty on all instrumentation systems and a full five year limited warranty on all Digiquartz transducers that is unmatched in the industry This policy applies to all Digiquartz transducers manufactured by Paroscientific and includes the repair and or replacement of parts that are required to maintain the unit to the as purchased configuration Excluded from this policy are the following conversions product modification zero adjustments recalibration and service analysis charges This Extended Limited Warranty is a supplement to Paroscientific Inc s Terms and Conditions of Sale Shipping charges are the responsibility of the customer Months From Shipment Discount From List Price 0 24 100
20. t or will void the warranty INTRODUCTION ecc c N INTRODUCTION This page intentionally left blank g Familiar 2 1 Features General descriptions and feature summaries for Digiquartz Broadband Pressure Transducers can be found on the Paroscientific website at www paroscientific com Additional details are shown on the Specification Control Drawing that is shipped with the transducer 2 2 Physical Inspection You should have received the following items with your Digiquartz Broadband Pressure Transducer purchase Digiquartz Broadband Pressure Transducer or Depth Sensor User s manual Specification Control Drawing SCD for the Digiquartz Broadband Pressure Transducer or Depth Sensor Calibration Coefficient Sheet Certificate of Calibration Certificate of Conformance 2 3 Handling Precautions Digiquartz Broadband Pressure Transducers are precision devices and as such they should be operated with a certain degree of care to ensure optimum performance wARNING It is recommended that the input pressure not exceed the specified limit Calibration can be affected if this limit is exceeded and permanent damage can result if the unit is sufficiently overpressured 9 waRNING Excessive mechanical shock may cause irreparable damage Do not drop a Digiquartz Broadband Pressure Transducer or allow tools or other hard objects to fall on the unit or its pressure port If so equipped the nylon or stainles
21. the transducer housing through a 0 1uF 50V capacitor To prevent damage to the transducer electronics ensure that the potential between power signal ground and the pressure fitting does not exceed 50V N CAUTION Current consumption increases when driving long lines or low impedances Refer to the Specification Control Drawing supplied with the transducer for output loading recommendations ELECTRICAL ecc c wo TRANSDUCER WIRES Most Digiquartz Broadband Pressure Transducers bring out their output and power connections on flying wire leads The pressure and temperature signals are typically brought out separately as twisted pairs with power signal ground The wires are color coded per following table TABLE 4 1 Transducer Wire Color Coding Wire Color Signal Red Power Blue Black twisted Pressure Signal Ground White Black twisted Temperature Signal Ground N CAUTION Do not bundle pressure and temperature wires together Doing so can cause the temperature signal to couple into the pressure signal which may result in pressure signal noise and diminished sensor performance CAUTION If pressure and temperature wires are to be extended also extend the associated black ground wires and ensure that the extension wires are also twisted at a rate of at least 4 to 5 twists per inch Failure to do so can cause the temperature signal to couple into the pressure signal which may result in pressure sig
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