Operating Instructions Pressure Transducer Testing Unit
Contents
1. Zero point setting Maintenance O 1000 bar 1000 bar Double nominal pressure flashing LCD display 3 1 2 figure LCD display with negative sign 3 measurements per second lt 0 25 from final val lt 0 02 from final val lt 0 04 from final val 0 40 C 0 40 C 15 50 C G 1 2 a at the bottom 9 V block battery with auto matic cut off after approx 20 min Low Batt signal on LCD display via potentiometer on the housing no special maintenance necessary Seite 1 Bedienungsanleitung Druckaufnehmerpr fger t Version 3 e 18 08 2000 Tel Operation Adaptor for transducer Figure 1 Figure 2 o_o Remove the pressure transducer testing unit from the suitcase put it on a solid horizontal support and mount the turnstile on the low pressure cylinder Switch the display pressure gauge red pressure switch on If no pressure is generated within 20 minutes the pressure gauge switches automatically off N Remove the blanking plug s and depending on the thread design screw in the corresponding adaptors and tighten them solidly Note Before screwing the pressure transducers into the testing unit these have to be thoroughly freed from deposits and melt residues Wrap the pressure transducer which has to be checked in the area of the screw in thread and the 45 packing surface with the caulking strip which is supplied2. Operating Instructions Pressure Transducer Testing Unit Version 3 Melt pressure transducers are often operated under very rough production conditions This may lead to the transducer being mechanically damaged however this does not necessarily lead to the measuring accuracy being impaired The correct function of the transducers can be tested with the pressure transducer testing unit Scope of supply 1 Suitcase with foamed intermediate layer 2 Hydraulic pressure transducer testing unit with digital pressure gauge high precision measurement of 0 1000 bar with turnstile 3 2 indicator plugs G 1 2 a 4 2 adaptors G 1 2 a to 1 2 20 UNF and 2 adaptors G 1 2 a to 18 x 1 5 D 1 roll of caulking strip 6 1 screw driver for levelling the digital pressure gauge 7 Acceptance Certificate 3 1B Technical Data Pump Pressure 1st cylinder Maximum pressure Filling medium Generation of pressure Fine setting Connections Dimensions LxWxH Weight 250 bar 1300 bar Univis J13 turnstile reversible lateral hand wheel 3 x G1 2 a 2 x adaptors 1 2 20 UNF and M18x1 5 290x190x110 mm approx 8 kg Pressure gauge Measuring range Pressure 2nd cylinder Overload safety Overload display Display Measuring rate Characteristic variation Hysteresis Reproductibility Environmental temp Compensated range Storage temperature Pressure connection Supply voltage Battery state display
3. at the same time Figure 2 screw it into the adaptor and tighten it solidly Connect an evaluation unit in order for the transducer signal to be displayed e g GneuB pressure measurement amplifier DMV 3000 m With the low pressure cylinder a pressure of up to 250 bar can be reached and with the high pressure cylinder up to 1000 bar In the sense of rotation to the right pressure is increased in the sense of rotation to the left pressure is lowered It has to be observed that pressure is generated first with the low pressure cylinder up to approx 250 bar and afterwards with the high pressure cylinder up to the required value With regard to the following pressure reduction the pressure first has to be lowered with the high pressure cylinder down to approx 250 bar After that the pressure can be reduced to zero with the low pressure cylinder Fine setting can be carried out at any time by means of the lateral hand wheel setting range approx 20 bar Note Since in the system minimal air and or gas components are always condensed at the same time the generated test pressure first drops a little in the high pressure ranges and has to be re adjusted accordingly Seite 2 Bedienungsanleitung Druckaufnehmerpr fger t Version 3 e 18 08 200 Tel 5 The digital display pressure gauge is a test comparison standard with a 0 25 precision The pressure gauge is fed from a customary 9V block battery The batt
4. ery life is of more than 100 working hours so that if it is used normally the battery only needs to be changed once a year in order to change the battery the plastic cover on the back has to be removed The display pressure gauge is generally maintenance free one should however see to it that at zero pressure both pressure cylinders on zero dead stop the display shows 000 If the zero point is displaced the display can be set to 000 by means of the screw driver which is supplied at the same time adjusting screw at the bottom at the side on the pressure gauge 6 Preservation of the functionality The test pumps are practically free from wear so that no special maintenance is necessary The only condition for this however is that a pure and acid poor filling medium is used Furthermore the pressure cylinders should not be operated under pressure limits which exceed those which have been indicated low pressure cylinder 250 bar high pressure cylinder 1000 bar 7 Refilling oil Normally there should be no big oil loss However it has to be taken into account that with every test cycle a small amount of oil is consumed and that after a certain time which cannot be determined there is not enough oil left in the system This oil loss then has to be compensated for as described below Turn by means of the hand wheel the Test connection 2 high pressure and low pressure cylinders backward until zero dead stop is reac
5. hed Test connectionid Open test connection 1 and turn clockwise by means of the hand wheel highepreseure cyilnder the low pressure cylinder as long as some filling medium emerges from the test connection Afterwards slowly turn backward counter clockwise by means of the hand wheel and fill in at the same Hand wheel time some filling medium Then lock test connection 1 up Open test connection 2 und use exactly the same procedure for the high pressure cylinder Note The cylinders should be filled up E A LP H ao gi Al aly ee r Lf j A Low pressure cylinder ae aa I A gt SA slowly in _order_to avoid as far_as Figure 3 possible that much air is absorbed GneuB Kunststofftechnik GmbH Tel 49 5731 5307 0 Monichhusen 42 Fax 49 5731 5307 77 D 32549 Bad Oeynhausen E mail gneuss gneuss com Internet http www gneuss com Seite 3 Bedienungsanleitung DruckaufnehmerprUufgerat Version 3 e 18 08 2000 Tel
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