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Pressure Computer Wöhler DC 2000

PRO

 

The Measure of Technology

2015-03-03   Art.-Nr

.: 20295

Contents

1. Specifications ...........................................2

2.  Controls and connections ........................5

3.  Signal menu .............................................8

4.  Stress test (DVGW-TRGI) .......................12

5.  Main test menu (DVGW-TRGI) ...............14

6.  Leakage rates & utility life  

  

measurements ........................................20

7.  Min, Max, AVG menu .............................21

8.  Setup menu for basic settings and logo 22

9.  Logger / data transfer ............................27

10.  Changing the batteries ...........................29

11. Accessories .............................................30

12. Information on disposal ...........................30

13.  Declaration of conformity .......................31

14.  Warranty and service..............................33

Quick reference ...........  loose leaf at the centre

Summary of Contents for DC 2000PRO

Page 1: ...ss test DVGW TRGI 12 5 Main test menu DVGW TRGI 14 6 Leakage rates utility life measurements 20 7 Min Max AVG menu 21 8 Setup menu for basic settings and logo 22 9 Logger data transfer 27 10 Changing...

Page 2: ...bility is accepted under any circumstances or guarantee given for results deter mined in conjunction with this instrument nor for any damage that may arise when using this instrument The pressure mete...

Page 3: ...ated in the Setup menu so that during measurements all four mea sured values pressure external and internal temperature and humidity and their respective channel numbers are transferred to a PC every...

Page 4: ...Measuring range 0 to 100 RH relative humidity non condensing Precision 2 RH within a range of 0 90 RH otherwise 3 RH Resolution 1 RH 1 4 Calculated values Pressure units conversion to mbar hPa Pa mm...

Page 5: ...5 C to 60 C in logger mode excl display incl display 0 50 C Mass approx 450 g with protective bag and magnet excl hose Dimensions 54 x 165 x 52 mm 2 Controls and connections Figure 1 below shows the i...

Page 6: ...essment when the key is first double then single tapped see 2 the dot indicates active reverse mode Figure 2 1 Display and controls on the DC 2000PRO The ENTER key at the centre of the control panel c...

Page 7: ...s In Figure 2 2 the rear of the DC 2000PRO exhibits diffusion apertures for the internal registration of ambient humidity optional and temperature The integrated temperature measurement also serves to...

Page 8: ...hich is activated at the ENTER key cursor flashes under Measuring Mode see Figure 3 1 Figure 3 1 Selecting the Signal menu 3 1 Pressure measurements The subprogram Signal is activated at the ENTER key...

Page 9: ...tedly pressed in the Measuring Mode menu until the text Prandtl appears with the unit of measurement m s The total pressure of the tube is connected to the overpressure so cket and the static pressure...

Page 10: ...until the text Temperature appears with the unit of measurement C Again pressing the key switches to the unit of mea surement F The ENTER key confirms the selected measuring mode and returns to the di...

Page 11: ...urns to the display The diffusion aperture on the rear of the housing should not be obstructed The humidity sensor is a laser trimmed capacitive sensor element with chip integrated signal processing I...

Page 12: ...o the test plug After zeroing press the key to activate the menu item stress test The DC 2000PRO prompts you to pump to the test pressure e g 1 bar or 1 000 hPa When the over and underpressure lines h...

Page 13: ...y Time 10 00 key Stop pressure 945 9 hPa key Text Print activate the printout with the ENTER key key Difference 54 4 hPa etc These results can also be printed out or transferred to a PC at a later tim...

Page 14: ...preset test pressure the stabilising phase is initiated default Stab time ten minutes This is marked with the trend symbols When the pressure remains within 10 of the test pressure during this stabili...

Page 15: ...se results are stored in the DC 2000PRO and can also be printed out or transferred to a PC at a later time under the menu item Print or Log IR respectively The record is not deleted until the logger i...

Page 16: ...kes a sample volume of 100 ml Figure 6 2 on the left Lines with volumes greater than 100 l can be tested with a manual test pump 163 ml stroke see figure 6 2 on the right Each test volume must be ente...

Page 17: ...or determining the pipe volume Vpipe with a 100 ml medical syringe left or a manual test pump right 6 1 1 Determination of the volume of the nozzle The pressure difference p will be measured It should...

Page 18: ...Pipe volume appears the pipe volume can then be determined from the pipe lengths and pipe diameters in figure 6 3 and entered at the key When this entered value is confirmed with the ENTER key it is u...

Page 19: ...s is marked with the trend symbols When the pressure remains within 10 of the test pressure during this stabilisation phase the actual pressure loss test is started at the end of the stabilisation tim...

Page 20: ...ressure p Omax max operating pressure of the gas in situ pstart test pressure at start of measurement pend test pressure at end of measurement p abs absolute air pressure entered manually under Abs pr...

Page 21: ...d the calculated averages AVG can be reset with the P 0 function The effect of smoothing on calculated averages can be set with the value ALPHA defined in Equation 6 The smaller the value for ALPHA th...

Page 22: ...in the quick reference in the middle of this manual 1 Setup Rounding Activating this function rounds off the displayed value to a resolution of five digits For a display in pascals for example this me...

Page 23: ...eraging function AVG in the form of Equation 6 ALPHA can accept values between 0 01 and 0 99 The lower the value for ALPHA the less perceptible are the current fluctuations in the signal see also Sect...

Page 24: ...under Section 3 4 The value taken from the calibration sheet must be rounded to two decimal places 25 00 60 00 mV default 30 00 V 14 Setup Log rate Here you can set the time between two registrations...

Page 25: ...cidental initiation is prevented by the prompt Sure 8 1 Entering a logo The following Tables 2 and 3 are to assist you in ente ring a logo into the DC 2000 First enter preferably with a lead pencil th...

Page 26: ...26 Hotline 49 29 53 73 100 Fax 029 53 73 96 100 DC 2000PRO 8 Setup Menu Table 3 Tamplate for own conversions...

Page 27: ...tored in the DC 2000PRO are transferred to a PC via the infrared interface order no 9631 serial or 9318 USB or Bluelink 500 Table 4 Example receive sequence channel no measured value 303025 01 0213 38...

Page 28: ...on the display the logger switches OFF automatically Before starting the logger for a longer period you should therefore check the battery status under Measuring Mode V battery Even without batteries...

Page 29: ...rwritten by a new pressure loss measure ment or logger recordings The text Print appears on the display during the printing process 10 Changing the batteries When only the text Self test or the messag...

Page 30: ...09 retrofit for humidity measurements order no 7203 disposable medical syringe 100 ml order no 53196 manual test pump order no 2412 syringe connecting hose order no 30545 11 Accessories You may hand i...

Page 31: ...gas lines complying with DVGW worksheets G 600 and G 624 DVGW type approval certificate DG 4805BQ0012 This type approval also included tests by T V S D Industrie Service zur Gas leckmengenmessung on t...

Page 32: ...32 Hotline 49 29 53 73 100 Fax 029 53 73 96 100 DC 2000PRO 12 DVGW type examination certificate...

Page 33: ...ng This warranty does not cover the costs of transport and packaging when the device is sent to us for repairs This warranty becomes void when the device is repaired or otherwise modi fied by unauthor...

Page 34: ...tr 12 80992 M nchen Tel 49 89 1589223 0 Fax 49 89 1589223 99 sued woehler de International USA Wohler USA Inc 5 Hudchinson Drive Danvers MA 01923 Tel 1 978 750 9876 Fax 1 978 750 9799 www wohlerusa co...

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