Logged data is written to a user specified file. Ensure that the RS parameters at the PC end match those of the instrument. The RS parameters of the instrument can be checked as detailed on page A procedure consists of a number of Druck Universal Command Interface DUCI commands that are usually assembled by a linking management software application e.
Druck Intecal. K Issue No. Page Calibration Calibration General The instrument is supplied by the manufacturer, complete with calibration certificate s. A calibration period of 12 months is recommended. The actual calibration interval depends on instrument usage and the total measurement uncertainty acceptable for the specified application. The DPI and DPI are very precise measuring instruments and the test equipment and conditions of test must be suitable for the type of work.
Page General Procedures Calibration Test Equipment The calibration procedures require the following test equipment. Enter the calibration PIN number, initially set to , press and the display shows the Calibration Menu.
Page Pressure Calibration Internal Pressure Range Use the following procedure for calibrating the internal pressure range. Note: If calibrating the hydraulic calibrator version, the calibrator must first be primed as detailed on pages 59 to Connect the outlet port of the instrument to a pressure standard. Verify the instrument calibration by applying the test voltages given in Table 2 page 50 , to the voltmeter after both voltage ranges have been calibrated.
Select 50V range for calibration: Link the voltage input terminals with a short lead and enter the zero point: Remove the shorting link from the voltmeter terminals, connect the Vin terminals of the instrument to a variable voltage source and connect a digital voltmeter Select CURRENT IN range for calibration: Open circuit the mA in terminals and enter the zero point: Connect the mA in terminals of the instrument to a variable current source and connect a digital milliammeter in series with the supply Verify the instrument calibration by applying the test currents given in Table 3 to the milliammeter.
Page 65 Calibration Set the loop output current to 5 mA as shown below and check that the output current, measured on the milliammeter standard is within the limits given in Table 4. Read the environmental temperature on a calibrated digital thermometer and enter the recorded value as shown below.
Page Add External Sensor Apply the full-scale pressure to the external transducer and store the full-scale FS point. Page 70 This page intentionally left blank K Issue No. Page Draining The Hydraulic Fluid Hydraulic Calibrator Versions Operation Continue use of the priming pump 2 until only hydraulic fluid and no air is expelled from the bleed point.
Close the UUT bleed valve 5 when the priming pump 2 is at the bottom of its stroke fully pushed in and slowly wind out the screw-press 3 to its fullest extent to draw in further hydraulic fluid approx. Connect the bleed hose assembly 1 to the priming port and a bleed hose to the pressure port as shown below: Bleed hose assembly Priming pump Page 76 This page intentionally left blank K Issue No.
Page 78 This page intentionally left blank K Issue No. The differential pressure measurement ranges can be: 2. Make sure any component connected to this calibrator can withstand this maximum differential pressure.
Use the volume adjuster fine control to adjust the test pressure of the calibrator to exactly the required value. Note: To apply a negative differential pressure, connect the tee piece refer to Figure B3 , to the negative port and use the hand-pump to apply a positive pressure to the negative port.
The calibration procedure for the internal pressure range requires the application of five test pressures as detailed below. Page 88 This page intentionally blank K Issue No. This manual is also suitable for: Druck dpi Print page 1 Print document 90 pages. Rename the bookmark. Delete bookmark? Cancel Delete. Delete from my manuals? Sign In OR. The re-calibration interval will depend on the total measurement uncertainty which is acceptable for a particular application.
The DPI is a very precise measuring instrument and the test equipment and conditions of test must be suitable for the type of work. The use of a Class A compensated deadweight tester is essential. The tests should be carried out in a controlled environment by a competent, trained person. If, when the accuracy of the instrument is checked, it is found to fall outside the specification, calibration adjustment can be undertaken to compensate errors.
Use high quality Repeatable and Linear pressure sources and allow adequate stabilisation time before calibration minimum 1 hour. Conduct the calibration in a temperature and preferably, humidity controlled environment. Review and become familiar with the whole calibration procedure before commencing the calibration process.
If necessary, use the TASK key to select another mode. In order to protect against accidental loss,the calibration of this instrument is protected by a PIN number.
Initially, this PIN number is set to To prevent unauthorised access to the calibration routines, it is recommended that this PIN number should be changed at the earliest opportunity refer to Page 8. At the chosen interval, the instrument readings should be compared with a known standard. Any deviations between the instrument and the standard should be noted, taking due account of the traceability accuracy to a National Standard.
If these deviations exceed the published tolerance, or any other suitable chosen performance standard, then the user may wish to carry out a calibration adjustment. Refer to Tables 1 to 4, pages 27 to 30, for details of test inputs and tolerances. If the instrument is operating correctly, only zero and full scale calibration will vary. Any excessive non-linearity or temperature effects indicate a fault.
In these circumstances,the instrument should be returned to a qualified service agent refer to pages 22 and The following laboratory standard test equipment will be required for the calibration procedures The calibration routines are selected from the Setup menu as detailed on page 8.
If necessary therefore,use the TASK key to select another mode e. Use a combination of the cursor keys to enter the PIN number Initially set to as shown below. The Up and Down keys enter numerals 0 to 9 or 9 to 0 respectively and the right and left keys shift number position. Note that the new PIN number requires to be entered twice, the second entry being used to verify the change.
If the second PIN number entry differs from the first, the PIN number is not changed and the following error message is displayed. The following procedure should be adopted for calibrating the internal pressure range. Note: If calibrating the hydraulic calibrator version, the calibrator must first be primed as detailed on pages 39 to 42 of K, pages 37 to 41 of K Welcome to ManualMachine.
We have sent a verification link to to complete your registration. Log In Sign Up. Forgot password? Enter your email address and check your inbox. Please check your email for further instructions. Enter a new password. DPI K Issue No. Hardkey total 7. Legend beside key symbol indicates function. Maximum Instrument Ratings The following table shows the maximum measurement ratings of the standard instrument which should not be exceeded. The pressure display flashes at altitudes below ft and above 50, ft or at airspeeds greater than kts,depending upon the mode selected.
DPI Calibration Procedures Introduction The instrument is supplied by the manufacturer, complete with calibration certificate s. General Procedures The following general hints are provided as a guide to calibration procedures. Do Use high quality Repeatable and Linear pressure sources and allow adequate stabilisation time before calibration minimum 1 hour.
Use deadweight testers carefully and away from draughts. If necessary, use the TASK key to select another mode e. Calibration Protection In order to protect against accidental loss,the calibration of this instrument is protected by a PIN number.
Calibration Procedures DPI Calibration Check At the chosen interval, the instrument readings should be compared with a known standard.
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