LEYRO LPG 300, Manual

Page 1: ...LPG 300 PORTABLE LOW PRESSURE CONTROLLER MANUAL ...

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Page 3: ... Intended use 2 2 Personnel qualification 2 3 Specific risks 2 4 Labelling Safety marks 3 PRODUCT DESCRIPTION 4 TRANSPORT PACKAGING AND STORAGE 5 OPERATION 6 INTERFACE 7 LOW PRESSURE CALIBRATOR 8 FAILURES 9 DISMOUNTING RETURN AND DIPOSAL 10 TECHNICAL DATA ...

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Page 5: ...hird parties Copies for personal use are permitted The document may contain technical inaccuracies or typographical errors The content will be reviewed on a regular basis These changes will take place in later versions The described products can improve and change at any time without prior notice Copyright Leyro All rights reserved 1 1 Symbology This symbol indicates safety instructions These safe...

Page 6: ...cifications required the taken out of service immediately and inspected by an authorised Leyro Control the electronic precision instrument with appropriate diligence protect it from hu midity impacts strong magnetic fields static electricity and extreme temperatures not to introduce any object in the instrument or openings Plugs and Sockets must be protected from dirt If you change the instrument ...

Page 7: ...hat is always present aid if necessary Operators regularly receive instructions on all issues related to security work first aid and environmental protection and know also instruction manual and particularly the safety instructions Danger Danger to life due to electrical current There are direct death danger to touch live parts Is operated with a defective power supply e g short circuit from the m...

Page 8: ...s carried out by return tothe manufacturer or by the corresponding municipal authorities see EU directive 2002 96 EC 3 PRODUCT DESCRIPTION Brief description The driver of low pressure LPG300 fits The easy supply of positive and negative reference pressure Measurement of positive and negative pressure Differential pressure measurement Checking for leaks of a test piece Scope of delivery Power suppl...

Page 9: ...Microprocessor Nominal real value comparator Nominal pressure value Pressure Port PC RS 23 Indication USB port Regulator Pressure measurement Pump Valves Neg press Poss press ...

Page 10: ...Electrical connections in the rear USB Port Port PC RS 23 Connection for power supply ...

Page 11: ...ection to ground can cause not permitted voltage potentials which in turn could affect the perfor mance of the device itself or other connected device or even destroy them 2 The connector must be always connected in the form accessible to an electrical outlet to allow for easy disconnection at any time LPG 300 Front view The screen behind the plate front glass is glass If during use cannot be dism...

Page 12: ...ed During adjustment of the zero point the instrument determines automati cally such modifications and includes them in the current pressure indication The zero point adjustment requires a switching of the internal valves which is not possible without a loss of pressure if this causes disturbance during use the adjustment of the zero point can be disabled Differential pressure instruments are conn...

Page 13: ...g transportation e g If the place of installation changes or if the instrument is sent for possible repairs Storage Conditions permitted in the storage place Storage temperature 10 70 C Humidity 30 80 h r no condensation Avoid Direct sunlight or proximity to hot objects Mechanical vibration mechanical shock putting it down hard Soot vapour dust and corrosive gases Potentially explosive environment...

Page 14: ...rument from direct sunlight as this may cause measurement errors Operating Control mode CTRL CTRL mode is used for calibration of pressure and pressure switches or other devices to pressure sensors CTRL mode the pump is activated and regulates the nominal pressure in the corresponding form The internal sensor supplies the current real value through the indicator Configuration Press MENU button Con...

Page 15: ...n nominal pressure can be changed only with the keys Keys can skip specification of nominal pressure in the corresponding place As soon the controller display indicates a stable value data can be registered In mode CTRL is possible to manually adjust the zero point of the controller and check for leakage of the connected device Manual adjustment of zero point by pressing the ZERO key the instrumen...

Page 16: ...d press the button until MEAS appears Confirm with OK In the menu go to the UNIT item with the button select the pressure unit and confirm with OK Press the MENU button in order to exit the menu SETTING submenu Go to the SETTINGS menu item with the button confirm with OK In the submenu go to the zero point adjustment item and confirm with OK Under the point AUTO ZERO the automatic zero point adjus...

Page 17: ... same values The mode also enables a defined profile to be traversed several times in succession Setting Press the MENU button Confirm the menu item MODE with the OK button and press the button until AUTO appears Confirm with OK For the AUTO mode the submenu points RANGE UNIT and STEPS are not relevant Go to the SETTINGS menu item with the buttons and confirm with the OK button The submenu item ze...

Page 18: ...T STOP Delay time before reaching the maximum defined pressure T HOLD Hold time until a new pressure value is reached T PAUSE Delay time between two cycles AUTO ZERO Automatic zero point adjustment at the completion of each cycle To exit the submenu press the MENU button Operation On leaving the menu the calibrator will revert to Standby status All information about theAUTO mode will be shown on t...

Page 19: ...The figure shows the flow chart for the AUTO mode Based on the table one will know which cycles are being carried out and the meaning of each OK ...

Page 20: ...In CTRL mode the connected test item can be checked for leakage via LEAK button Setting In order to be able to check a test item for leakage the instrument must first be placed in CTRL mode Set the desired pressure using the button or the button 0 100 buttons As soon as the pressure is reached and the value is stable press the LEAK button The internal pump will be switched off and the applied pres...

Page 21: ...mbar psi inH2O inHg mmHg Torr STEPS Setting of the step size in x Settable in the range 1 50 MODE Selection of the operating mode Control CTRL Regulates to the given set point Measure MEAS Measurement of differential and relative pressure Automatic AUTO Carries out a stored test routine LANGUAGE Selection of the displayed language SETTINGS Here additional instrument settings can be made ...

Page 22: ...controller measures the pressure in the set pressure unit Control CTRL A set point is automatically regulated Automatic AUTO A stored test routine will be carried out The menu points With the MENU button and with the button press the up and down until one is at the required menu point With the SELECT button one reaches the desired submenu The following items are available in the submenu RANGE Unde...

Page 23: ...ng exit from the menu It is even possible to set at what intervals the instrument will automatically perform a zero point adjustment RS232 USB Selection of the appropriate serial interface DISPLAY Brightness setting AUTO MODE Setting of the pressure range the pressure unit and number of steps the pressure range will be divided up into The STEPS UP STEPS DOWN can be assigned different values INFO B...

Page 24: ...second USB interface The PC provides a virtual COM port over the USB interface The control of the instrument is therefore no different from the control via the RS 232 RS 232 interface To connect the RxD TxD and GND lines are required The connection is made with an in line serial cable 1 1 male female Interface configuration Press the MENU button and press the button until the SETTINGS submenu item...

Page 25: ...alue 8 STOP BITS Defined value 1 PARITY BITS Defined value N Commands for serial interface All interface commands are preceded by a colon and completed with the carriage return CR Command and parameters must be separated by a space By adding a question mark to the appropriate action the parameter can be read rather than chan ged Received commands are acknowledged with OK null or false commands wit...

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Page 28: ...Driver The current USB interface driver is Future Technology Devices International Limited FTDI provided for download on its website for all major operating systems Win dows Linux Mac OS ...

Page 29: ...ct it from the mains Clean the instrument with a moist cloth Electrical connections must not come into contact with moisture Wash or clean the dismounted instrument before returning it in order to protect persons and the environment from exposure to residual media Residual media on the dismounted low pressure controller can result in a risk to persons the environment and equipment Take sufficient ...

Page 30: ...controller must be shut down immediately and it must be ensured that pressure and or signal are no longer present and it must be prevented from being inadvertently put back into service In this case contact the manufacturer If a return is needed please follow the instructions given in chapter 10 2 Return ...

Page 31: ...re connections 5 Do not close the pressure inputs 6 Make sure there is no media left in the instrument Warning Strictly observe the following when shipping the instrument All instruments delivered to Leyro must be free from any kind of hazardous substances acids bases solutions etc When returning the instrument use the original packaging or a suitable transport package To avoid damage 1 Do not ret...

Page 32: ...ally compatible way and in accordance with the country specific waste disposal regulations 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 2002 96 EC 10 TECHNICAL DATA ...

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Page 34: ...FRONT VIEW ...

Page 35: ...SIDE VIEW ...

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Page 37: ...HEAD OFFICE LEYRO INSTRUMENTS SL Avda Somosierra 24 28703 San Sebastián de los Reyes Madrid Tel 34 912 835 502 info leyro net www leyroinstruments com ...

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