WIKA CPD8500 Operating Instructions Manual
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WIKA CPD8500 Operating Instructions Manual

WIKA CPD8500 Operating Instructions Manual

Digital deadweight tester
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Operating instructions
Digital Deadweight Tester, Model CPD8500
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Digital Deadweight Tester, Model CPD8500

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Summary of Contents for WIKA CPD8500

  • Page 1 Operating instructions Digital Deadweight Tester, Model CPD8500 Digital Deadweight Tester, Model CPD8500...
  • Page 2 Mensor is a registered trademark of Mensor, LP. All other brand and product names are trademarks or registered trademarks of their respective companies. Prior to starting any work, read the operating instructions! Keep for later use! WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 3: Table Of Contents

    5.6.1 Low Pressure Absolute Heads ......27 WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 4 ....... 54 WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 5 Units Command Syntax for Measurement Units ....70 CPD8500 Command Set ......71 7.7.1...
  • Page 6 12.4 Conversion Factors, Pascal ......103 Declarations of conformity can be found online at www.wika.com.

  • Page 7: General Information

    1. General information 1. General Information The CPD8500 digital deadweight tester described in the operating instructions has been designed and manufactured using ■ state-of-the-art technology. All components are subject to stringent quality and environmental criteria during production. Our management systems are certified to ISO 9001 and ISO 14001.

  • Page 8: Radio Frequency Emission Notices

    LIMITED WARRANTY applies to any CPD8500 manufactured as an upgrade of an existing CPD8000/DPG10. Any reused parts including but not limited to the internal load cell, vacuum box and the enclosed components are excluded from Mensor's Warranty coverage.

  • Page 9: Mensor Service Plus

    1.4.3 Certifications and Accreditations Mensor is registered to ISO 9001:2008. The calibration program at Mensor is accredited by A2LA, as complying with both the ISO/ IEC 17025:2005 and the ANSI/NCSL Z540-1-1994 standards. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 10: Short Overview

    The CPD8500 has two different chassis and multiple head options to cover absolute and gauge pressure types with a high accuracy class. The optional internal or external barometer allows easy zeroing and pressure type emulation.

  • Page 11: Components

    The EMM continuously monitors the change in ambient conditions in real time. Whenever these conditions vary in proportions that might noticeably alter the measuring performance, the CPD8500 recommends the user to perform a span calibration for the internal load cell, this is explained in section 6.4.1.4. 2.2.4 Drive Motor Stable pressure measurement requires the piston-cylinder assembly inside the measuring head to spin at a fixed rate.

  • Page 12: Front Panel

    Front Panel The CPD8500 front panel includes an 7” color LCD display with touch screen. Operator input is accomplished by pressing the words or symbols and the App icons presented on the display. There is a single discrete on/off button and a USB on the right hand side.

  • Page 13: Display

    Settings Apps Buttons, Labels and Windows: The CPD8500 touch screen has many buttons with relevant graphic icons or text which, when touched, will open a related window where changes can be made or information viewed. Some of these buttons will toggle from one state to another, others present choices or display a numerical data entry screen.

  • Page 14: Safety

    Intended Use The CPD8500 digital deadweight tester is designed to automate the testing and calibration of pressure devices and instruments for pressures up to 500 bar or 7,250 psi. The instrument allows measurement of absolute or gauge pressures with two different chassis and head type options.

  • Page 15: Improper Use

    Special knowledge for working with instruments for hazardous areas: The skilled (electrical) personnel must have knowledge of ignition protection types, regulations and provisions for equipment in hazardous areas. Special operating conditions require further appropriate knowledge, e.g. of aggressive media. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 16: Personal Protective Equipment

    This marking on the instruments indicates that they must not be disposed of in domestic waste. The disposal is carried out by return to the manufacturer or by the corresponding municipal authorities (see EU directive 2012/19/ EU). WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 17: Warnings And Cautions

    Do not position the equipment so that it is difficult to disconnect the AC power cord. WARNING! Detachable main power supply cord with inadequate ratings should not be used. See Section 10 Specifications for power ratings. Additional Warning and Caution notices are found throughout this manual. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 18: Transport, Packaging And Storage

    Before putting it back into operation, wait for the instrument temperature and the room temperature to equalize. Packaging and storage The CPD8500 digital deadweight tester is packaged in a custom transport case especially designed to maintain the performances of the instrument in normal transportation conditions. Do not remove packaging until just before mounting.

  • Page 19: Transport Of Measuring Heads Cps8500

    4.2.1 Transport of Measuring Heads CPS8500 There is a smaller case (figure 4.2.1) to support the transport of up to two measuring heads for the CPD8500. This case also provides an option to add measuring head specific accessories. WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 20 Avoid exposure to the following factors: Direct sunlight or proximity to hot objects ■ Mechanical vibration, mechanical shock (putting it down hard) ■ Soot, vapor, dust and corrosive gases ■ Hazardous environments, flammable atmospheres ■ WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 21: Installation

    Leveling The leveling of the CPD8500 can be verified with the biaxial bubble levels present on the top of the base (Figure 5.2). Repeatable measurement results can only be obtained if the CPD8500 is leveled horizontally. The leveling feet and the bubble levels ensure the alignment of the instrument according to the mounting surface.

  • Page 22: Cps8500 Measuring Head Installation

    Leveling feet Figure 5.2 CPS8500 Measuring Head Installation The head installation instructions vary depending on the type of measuring head and the corresponding base of the CPD8500. 5.3.1 Absolute Measuring Head These instructions are valid for the absolute heads to be installed on an absolute base:...
  • Page 23 (Figure 5.3.1-E). Secure the measuring head on to the head by screwing in the three hex screws (Figure 5.3.1-F). Figure 5.3.1-D Aligning Head with Base WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 24: Gauge Measuring Head

    Simply unscrew with two hex screws (Figure 5.3.2-B) and lift the aluminum cover. Store this cover for future transportation of the instrument. Figure 5.3.2-C shows the base with the aluminum cover removed. WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 25 Align the mark on the base plate to the white mark on the head (Figure 5.4.2-D) and gently push the head on to the base and ■ turn clockwise until secure (Figure 5.3.2-E). Alignment mark Figure 5.3.2-D Alignment Mark WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 26: Head Temperature Probe Installation

    Figure 5.5-B shows the probe connected to the head. The electrical connection for the probe is done by the rear panel of the CPD8500. See section 5.7 for more details.

  • Page 27: Motor Installation

    Motor installation can be done either before or after head installation. The motor assembly (brushed/ brushless motor) and motor power cable is part of the packaging for the CPD8500 (Figure 5.5-A). Simply insert and screw in the bottom end of the motor to the matching cover or motor adapter on the base (Figure 5.5-B).
  • Page 28 Figure 5.6.1 displays the pressure connections required to setup and operate the low pressure absolute CPD8500. All the valves and tubing involved in the setup process are part of the low pressure absolute CPD8500 carrying case. Following is a list of the...

  • Page 29: Zeroing & Spanning Setup

    Figure 5.6.2 displays the pressure connections required to setup and zero the high pressure absolute CPD8500. All the valves and tubing involved in the setup process are part of the low pressure absolute CPD8500 carrying case. Following is a list of the...

  • Page 30: En Zeroing & Spanning Setup

    0 ... 100 bar (0 ... 1,450 psi) 10 Pa 10 bar/ kg 0 ... 200 bar (0 ... 2,900 psi) 20 Pa 20 bar/ kg 0 ... 500 bar (0 ... 7,252 psi) 50 Pa 50 bar/ kg WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 31: Zeroing & Spanning Setup

    Rear Panel The rear panel of the CPD8500 differs slightly between absolute and gauge base types as shown in Figure 5.7-A. Some of the common connections for both types of instruments are the communication ports, power supply, USB host connections, barometric reference port, the brushed DC motor connection and the EMM.

  • Page 32: Reference Supply Port

    These ports are present only in the absolute version of the instrument. The pressure supplied to these pressure connections should be from a vacuum pump external to the instrument. These ports are connected internally in the CPD8500. The vacuum pump must be connected to only one port at a time with the other port connected to the measuring head as explained in Section 5.6.1 &...

  • Page 33: Operation

    Do not position the equipment so that it is difficult to remove the power cord. The instrument is not intended for connection of long-distance lines, i.e. lines within a building that are longer than 30 m, or that leave the building (including lines of outdoor installations). WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 34: General Operation

    (Uncertainty, Peak, Head Temperature, Ambient Temperature, Ambient Humidity, Ambient Pressure, Residual Pressure, Secondary Units, Mass and EMM) will appear in the Home App if activated. All of the CPD8500 screen features are described in more detail throughout this manual. The active App is represented with a dark to light gradient from the top to bottom compared to the other Apps.

  • Page 35: Initial Setup

    Local Gravity Setup The CPD8500 uses local gravity as part of the internal calculation to deliver an accurate pressure value. Upon power up, the local gravity prompt appears on the right side of the screen (Figure 6.2.1 Local Gravity Setup). The user could setup the local gravity by clicking [ ] and then navigating to the Service Application (Section 6.4.9).

  • Page 36: Language Selection

    Selection). Before proceeding further, match the Head type, Serial number (S/N) and pressure range as displayed on the actual head (Figure 6.2.4-B Head Label) with the information in the Head Information App. Figure 6.2.4-A Head Selection WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 37 6.2.4-E displays the Upgrade menu to upgrade the instrument software and load Head Data from or to the USB drive. Simply press the “USB Drive --> Head Data” button to load the Head information present on the USB drive to the CPD8500. The new head information would be visible in the Head Information App menu along with other pre saved head information.

  • Page 38: Head Motor Activation

    [ ], indicating an active motor spinning the piston-cylinder. The motor should be turned on while operating and performing calibration functions with the CPD8500. The motor status icon turns yellow [ ] to indicate a warning or an error in spinning the piston-cylinder.

  • Page 39: Application Selection And Parameter Inputs

    ] above the input area. The purpose and use of each selection and menu is intuitively apparent and will become second nature with minimal exposure to the menu structure. Menu Button Input Title App Title WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 40: Applications

    (Figure 6.4.1-C Pressure Units). Additional icons representing the status of the instrument may appear adjacent to the Tare button during operation (Table 6.4.1 Internal Status Icons). Figure 6.4.1-A Basic Home App Figure 6.4.1-B Home App with all Features Figure 6.4.1-C Pressure Units WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 41: Current Pressure Reading

    The current pressure reading is displayed in the Home App at all times. The pressure reading can appear either gray, white or green in color indicating invalid, unstable or stable pressure values respectively (Figure 6.4.1.1-A). Figure 6.4.1.1-A Invalid Pressure Reading Figure 6.4.1.1-B Unstable Pressure Reading Figure 6.4.1.1-C Stable Pressure Reading WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 42: Units And Pressure Type

    Table 6.4.1.4 displays different scenarios requiring Zero and Span calibration. The procedure for performing the Zero calibration is different for absolute and gauge mode. Figure 6.4.1.3 shows the Zero button in the Home App. Zero button Figure 6.4.1.3 Zero Button WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 43 20 pascals and greater than 2 pascals. Vacuum pump recommendations and connections are mentioned in Section 5. Zero button inaccessible Figure 6.4.1.3.2 Inaccessible Zero Button WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 44: Span

    Span calibration is unsuccessful and an error is reported WARNING! It is recommended to do a span calibration each time the instrument is powered up. WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 45 Ambient Pressure out of tolerance Tolerance limits settable in Limits application Ambient Temperature out of tolerance Tolerance limits settable in Limits application Relative humidity out of tolerance Tolerance limits settable in Limits application WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 46: Bar Graph

    The uptime clock present on the top right corner of the display screen represents the time passed since power up. This clock is provided to assist in determining the setup and stabilization time during installation (Section 5.7.4). WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 47: Tare Button

    Figure 6.4.1.10 Barometer Readout When both the internal and external barometers are connected to the instrument. The Barometer Readout would indicate the external barometer and would utilize this to do emulated pressure measurement. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 48: Settings Application

    (decimal mark) will change from a dot (.) to a comma (,) depending on the language chosen. More languages can be accessed by navigating to the next page of the language selection menu on the right side of the screen. Figure 6.4.2.1 Languages WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 49: Brightness

    Unit multiplier. When set this way, and the user unit has been chosen from the main screen, then the user unit will now display the Special unit as derived. Figure 6.4.2.3 User base units/ Base units multiplier WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 50: Barometer Units

    To reload a saved configuration at a later time, go to Settings-Configuration and press the numbered configuration button corresponding to the saved configuration and then press the “Load” button. Figure 6.4.2.6 Configuration The instrument default configuration can be activated simply by pressing the “Default” Button. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 51: Limits Application

    This will release the current preset button to indicate the current parameters do not represent the instrument presets. Saving user defined tolerance limits can be done in the Custom tab. Figure 6.4.3.1 shows the data entry keyboard to enter the limits. Figure 6.4.3.1 Ambient Tolerance limit WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 52: Head Temperature Limit

    The Stable Vacuum Limit button allows setting vacuum pressure limits to determine the stability of source reference vacuum pressure. Figure 6.4.3.3 Pressure Stability Parameters WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 53: Display Settings Application

    By default the filter is set to “Off”, user can select varying degrees of filtering for the current units by selecting “Low”, “Normal” or “High”. Figure 6.4.4.1 Reading Filter WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 54: Reading Resolution

    Turning the Tare button “On” will enable the Tare Cal Button [ ] in the Home App. See Section 6.4.1.8 for operation of the Tare button in the Home App (main screen). Figure 6.4.4 Tare Button WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 55: Uptime Clock

    The motor limit button indicates a number corresponding to the current drawn by the motor. The motor limit is also part of the pre saved head data and is automatically changed with the change in active head. The user can change this limit as desired when changing or replacing motors (Figure 6.4.5-C). WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 56 Temperature Correction: Displays the temperature correction factor (TC) set for the active measuring head. ■ Density Correction: Displays the density correction coefficient ( ρ ) for the active measuring head. ■ Accuracy: Displays the calibrated accuracy of the measuring head. ■ WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 57: Remote Settings Application

    6.4.6.1-A). All sets of commands are listed in Section 8, Remote Operation. The termination character sets the output termination character for all remote communication command sets (Figure 6.4.6.1-B). Figure 6.4.6.1-A Remote Command Set Figure 6.4.6.1-B Termination Character WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 58: Remote Communication Settings

    Setting the Ethernet DHCP to yes will have a short delay while the DHCP server is contacted. If a DHCP server is not found, an error will be indicated. If DHCP is enabled, the IP address, Netmask and Gateway are locked, these are controlled by the DHCP server. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 59: Information Application

    Head model number, range, Kn value, distortion coefficient and temperature coefficient. ■ Load cell serial number, environmental monitoring module serial number, software version. ■ Optional sensor information, model number, serial number and software version. ■ Figure 6.4.7 Information App WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 60: Troubleshooting Application

    ] will appear in all screens (Figure 6.4.8-A) of the instrument. Pressing this error button from any screen will open the Troubleshoot application where the error can be viewed. Figure 6.4.8-A Error Indication Figure 6.4.8-B Troubleshoot Screen WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 61: Service Application

    Note: The default password is 123456. After entering this for the first time, the password can be changed. After the Password has been entered, the unlocked Service Application will appear (Figure 6.4.10). To re-lock this screen, press the lock button. Figure 6.4.10 Unlocked Service App WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 62 The Unlocked Service Application is the access point to all calibration screens described in Section 8 of this manual. Note: Recommended calibration setup and explanation of calibration screen applications is covered in Section 8 of this manual. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 63: Remote Operation

    CAUTION! Please consult your computer resources department prior to connecting this instrument to your network to verify there are no conflicts with existing IP addresses. The Ethernet communication port allows the CPD8500 to communicate with computers using 10/100Based-T specifications. Before using Ethernet communication, four parameters must be present: IP, Netmask, Gateway, and Port.

  • Page 64: Serial

    These parameters should be set to match your host computer. Default settings are: 9600 baud, 8 data bits, 1 stop bit, no parity, and no echo. If echo is ON, the CPD8500 will immediately echo back characters sent over the serial port. The Serial function allows the user to set the RS-232 serial port settings by selecting from the choices provided: Baud ■...

  • Page 65: Mensor Command Set

    This Mensor command set is the default on the CPD8500. For queries (ending with a ?), the Data column represents the response of the CPD8500. All response strings begin with a space character or an “E” representing that there is an error in the error queue.

  • Page 66: Mensor Commands And Queries

    Mensor Commands and Queries Table 7.6.4 lists all of the current mensor commands and queries. Optional emulation modes are available in which a CPD8500 can emulate remote functions of different brands of pressure gauges. Please contact Mensor for more details.
  • Page 67 Sets the head pressure height in inches Height? <sp>+n.nnnnnnnE+nn<cr> Gets the head pressure height in inches <lf> <sp>MENSOR,CPD8500, ssssss,v.v.vv<cr><lf> Ssssss is the serial number,v.v.vv is the CPD8500 software version. Industrial ON or OFF Sets the industrial parameters Industrial? <sp>(YES or NO)<cr><lf>...
  • Page 68 Span? <sp>+n.nnnnnnnE+nn<cr><lf> Returns the active device’s span multiplier. Not valid for the head device Sparity EVEN, ODD, NONE Sets the serial and USB parity Sparity? <sp>CCCC<cr><lf> Returns the serial and USB parity WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 69 7. Remote Operation Srqmask “None” Sets the CPD8500 to issue a service request (SRQ) over the IEEE when the pressure “Stable” Control is stable, or an error occurs. These are 0x02 “Error” and 0x01 in hex, respectively. “Error,Stable” Srqmask? <sp>{string}<cr><lf>...

  • Page 70: Units Command Syntax For Measurement Units

    Imperial meters of mercury @ 0°C Metric hectapascals Metric megapascals Metric millimeters of water @ 20°C MMH2O Metric centimeters of water @ 20C CMH2O Metric meters of water @ 20°C MH2O Metric WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 71: Cpd8500 Command Set

    When a command is not supported, the received message is answered back and followed by ? Status of the instrument: When the CPD8500 is performing the calibration, the zeroing or the configuration of the DPM, no other command are valid. The CPD8500 answer STS=1 until the action in progress is finished.
  • Page 72 TST = S TST = 0.00 Kn unit (bar or psi) 0 (bar/kg), 1 (psi/kg) User unit coefficient UUN** User unit label USER Calibration indication Pressure stability selection (P/s unit) 0,01 (mbar/s) WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 73: Error Codes

    Load cell: Tare disable not performed ERR_LOADCELL_TARE_NOT_PERFORM Load cell: Tare not performed ERR_LOADCELL_TARE_LOWER_LIMIT Load cell: Tare lower limit exceeded ERR_LOADCELL_TARE_UPPER_LIMIT Load cell: Tare upper limit exceeded ERR_LOADCELL_ZERO Load cell: Zero calibration process error WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 74 Relative humidity out of compensated range ERR_AMBIENT_TEMPERATURE_UNREASONABLE Ambient temperature is an unreasonable value ERR_AMBIENT_TEMPERATURE_OUT_OF_CALIBRAT- Ambient temperature out of compensated range ED_RANGE Remote Errors ERR_UNSUPPORTED_DEV Device Command Not Supported Error Mensor Command Set Specific Errors ERR_SYNTAX Syntax Error WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 75 2 Load Cell Not at Zero - Unable to cal ERR_DH_BARO_INIT_FAILED 3 Barometer Initialization Failed ERR_DH_CELL_OVERLOAD 4 Load Cell Over loaded ERR_DH_CELL_UNDERLOAD 5 Load Cell Under loaded ERR_DH_READING_IN_MENU 6 Pressure Reading in Menu Mode ERR_DH_TARE_FAIL 7 Calibration Test Failed WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 76: Maintenance And Recalibration

    We use this knowledge in our continuing effort to design better and more robust instruments. • Repair or replacement of the CPD8500 chassis, module and measurement transducers will be available up to 7 years after the production life cycle of the product, pending external vendor parts or equivalent parts availability. The production life cycle is defined as the time from the product series launch to the announcement of discontinuation (typically 8 to 10 years).

  • Page 77: Media

    8.2.4 Media The recommended calibration medium is dry nitrogen or clean dry instrument air for the absolute CPD8500. For the gauge CPD8500, it is recommended to calibrate the measuring head in clean dry air and lubricating the measuring head with recommended lubricating oil mentioned in Section 5.3.2.

  • Page 78: Calibration Application

    The Calibration Application (Figure 8.2.6-A) provides a place to adjust or perform the calibration of the different components inside the CPD8500. Depending on the type of component, it provides the user an option to perform a single point, two point or up to eleven point linearization (Figure 8.2.6-B). Regardless of the calibration sequence, the type of calibration can be either “As Found”...

  • Page 79: One Point Calibration

    “Save Cal Data?”. Pressing OK [ ] in this screen will save the calibration to the memory of the device or instrument. The tolerance limits for various devices/components inside the CPD8500 are mentioned in the Table 8.2.6.1. Figure 8.2.6.1-A One Point Calibration (As Found) Figure 8.2.6.1-B One Point Cal (Live)

  • Page 80: Two Point Calibration

    Enter the true reference value for high point by pressing the button under “Reference” next to “High Point” and using the pop up ■ WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 81: Linearization

    “true” reference value in the corresponding “Reference” cell. Press the check mark [ ] to accept each value. The values must be within the tolerance limits of each other to be accepted. WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 82 When satisfied that all values have been entered correctly, press the “Adjust” button and then the “Save” button to save the new calibration data in the device or instrument memory (Figure 8.2.6.3-C). Figure 8.2.6.3-C Linearization Graph WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 83: Mass Calibration Application

    Mass Calibration Application The Mass Calibration App (Figure 8.2.7-A) provides a guided menu to calibrate the internal load cell of the CPD8500. An eleven point linearization going upscale and downscale can be performed to the internal load cell to ensure optimum performance through out the span of the instrument.
  • Page 84 After completing the cycle of loading (upscale) and unloading (downscale) the masses, the calibration can be saved by pressing “Save” button (Figure 8.2.7-G). Figure 8.2.7-E Reference Values Figure 8.2.7-F Upscale Mass Adjustment Figure 8.2.7-G Mass Calibration Complete WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 85: Head Settings Application

    To modify any information of an existing head, simply press on the corresponding parameter button and make a selection from the drop down menu or enter the new values using a keyboard and then pressing the Check mark [ ] button. Figure 8.2.8-B Head Parameter Modification-Model (left) and Distortion Coefficient (right) WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 86: New Head Addition

    Once all the necessary information is entered, the Save button becomes active and the head parameters can be saved to the memory of the CPD8500. Pressing the “Save” button prompts “Create new head data file?” on the screen and pressing OK [ ] button creates the new head file with the above data.

  • Page 87: Reference Level

    Height: the difference between the device under test and the transducers in the CPD8500 ■ (Difference = DUT - CPD8500) As an example, if the device under test (DUT) is 10 inches above the CPD8500, enter +10 in “Height” button with the “Imperial” units Gas Temperature ■...

  • Page 88: Dismounting, Return And Disposal

    Wear the requisite protective equipment (see chapter 3.6 “Personal protective equipment”). ▶ Observe the information in the material safety data sheet for the corresponding medium. ▶ Only disconnect the pressure measuring instrument/measuring assembly/test and calibration installations once the system has been depressurized. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 89: Return

    This marking on the instruments indicates that they must not be disposed of in domestic waste. The disposal is carried out by return to the manufacturer or by the corresponding municipal authorities. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 90: Specifications

    (0 ... 2 bar abs. & 0 ... 5 bar abs.) 1) Kn is defined as the piston cylinder coefficient determining the pressure generated per kilogram of mass exerted on the CPD8500 chassis. 5) PPM = parts per million of the reading.

  • Page 91: Base Instrument

    Residual vacuum Sensor Range Precision Stability High accuracy vacuum sensor 0.1 ... 1000 mtorr 0.25% of reading Calibration interval 365 days Communication Interface Standard: Ethernet, IEEE-488, USB, RS-232. Command sets Mensor and CPD8000 WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 92: En 10.3 Approvals And Certificates

    8) Warning! This is class A equipment for emissions and is intended for use in industrial environments. In other environments, e.g. residential or commercial installations, it can interfere with other equipment under certain conditions. In such circumstances the operator is expected to take the appropriate measures. 9) Calibration in a horizontal position/operating position. WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 93: Dimensions In Mm (In)

    10. Specifications 10.4 Dimensions in mm (in) 10.4.1 Absolute [ 395 ] 15.553 [ 345.4 ] 13.600 [ 345.4 ] 13.600 WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 94: Gauge

    10. Specifications 10.4.2 Gauge [ 302.1 ] 11.893 [ 345.4 ] 13.600 345.4 13.600 [ 175.9 ] [ 200.9 ] 6.925 7.909 [ 536.7 ] 21.129 WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 95: Accessories

    11.1 Barometric Reference Sensor The CPD8500 can be ordered with an internal barometric reference sensor. It is a very stable, absolute pressure transducer, used to accurately measure local atmospheric pressure. It is used to display the barometric pressure (reading appears on the bottom right side of the display) or as a barometric reference for absolute emulation.

  • Page 96: Absolute Accessory Kit

    11.3 Absolute Accessory Kit The CPD8500 Absolute base accepts two styles of absolute heads: low pressure (1-5 bar) and high pressure (10-20 bar). The low pressure heads feature three KF-16 flanges which are used to connect to vacuum, vent, and working pressure, and the high pressure heads feature a DH1500 port.

  • Page 97: Vacuum Pump Requirements

    Figure 11.3 Absolute Accessories Mounted on a Low Pressure Absolute Head 11.4 Vacuum Pump Requirements The vacuum pump used to supply vacuum supply to the absolute CPD8500 must have the following specifications. The vacuum pump is not supplied with the product.

  • Page 98: Upgrade Accessory Kit

    11.7 External Mass Set An External Mass Set is required to calibrate and linearize the internal load cell to the CPD8500 (See Section 8.2.7 for details). The mass set (Figure 11.7) contains the following: Mounting connector ■...

  • Page 99: Emm Calibration Sled

    EMM inside CPD8500, follow instructions in Section 8.2.6. To calibrate the EMM outside the CPD8500, a calibration sled or adapter is required for the EMM to communicate with a computer. The primary function of the calibration sled is to allow communication of the sled via RS-232 port. The calibration can be done by reading the EMM remotely by the PC and comparing the values of each sub component with the reference standard.

  • Page 100: Appendix

    H2O 20°C centimeter of water @ 20°C cm H2O 20°C meters of water @ 20°C m H2O 20°C User Units 1 User defined User Units 2 User defined 12.2 Conversion Factors, PSI WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 101 0.6838528 1.462303 0.0625 0.006944444 0.072 13.88889 µHg 0°C 51715.08 0.00001933672 0.0005 2000 mHg 0°C 0.05171508 19.33672 68.94757 0.01450377 0.006894757 145.0377 mmH2O 20°C 704.336 0.001419777 cmH2O 20°C 70.4336 0.01419777 MH2O 20°C 0.704336 1.419777 WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 102: Conversion Factors, Millitorr

    MSW 0°C 3.5% salinity 0.00001322347 75623.11663 0.0003093875 3232.1992 0.002784488 359.132477 0.000001392244 718265.0575 µHg 0°C 1.000000000 0.00000000966836 103430160.00 0.000001 1000000.00 0.001333220 750.0636259 0.0000001333220 7500636.259 mmH2O 20°C 0.01361955 73.42388114 cmH2O 20°C 0.001361955 734.2388114 MH2O 20°C 0.00001361955 73423.88114 WIKA operating instructions digital deadweight tester, model CPD8500...

  • Page 103: Conversion Factors, Pascal

    2.320603E-03 4.309223E+02 2.088543E-02 4.788025E+01 1.044271E-05 9.576052E+04 µHg 0°C 7.500636E+00 1.333220E-01 7.251885E-08 1.378951E+07 mHg 0°C 7.500636E-06 1.333220E+05 1.00000E-02 1.00000E+02 1.00000E-06 1.00000E+06 mmH2O 20°C 1.021553E-01 9.789017E+00 cmH2O 20°C 1.021553E-02 9.789017E+01 MH2O 20°C 1.021553E-04 9.789017E+03 WIKA operating instructions digital deadweight tester, model CPD8500...
  • Page 104 WIKA subsidiaries worldwide can be found online at www.wika.com. Mensor Corporation WIKA Alexander Wiegand SE & Co. KG 201 Barnes Drive Alexander-Wiegand-Straße 30 San Marcos, TX 78666 • USA 63911 Klingenberg • Germany Tel. (+1) 512 3964200-15 Tel. +49 9372 132-0...

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