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Summary of Contents for Kleinwächter EFM 255
- Page 1 MANUAL Electrostatic Field Meter EFM 235 / 255 System Prof. Dr.-Ing. Hans Kleinwächter...
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Page 2: Table Of Contents
Manual EFM 120 Contents General information about electrostatics ........................ 3 Origin of electrostatic charge ........................... 3 Product description................................3 Measuring principle ..............................3 Application Areas ................................3 Specifications .................................. 4 Legend ....................................4 Start Condition ..................................4 Manual ....................................5 Startup Menu ................................... -
Page 3: General Information About Electrostatics
General information about electrostatics General information about electrostatics Nowadays ESD is a problem at many workstations, because modern microelectronics easily destroyed by the sequels of ESD. Other branches of industry like e.g. telecommunications-, plastics-, and explosive material industry are also heavily affected by ESD. ESD causes losses of time as well as high financial losses and can endanger the human health. -
Page 4: Specifications
Manual EFM 120 Specifications Dimension (L x W x H): 170mm x 77mm x 73,5mm Weight: 550gr Calibration in a plate capacitor: 400mm x 400mm, Distance 100mm Calibration accuracy: < 2% Interface: Mini USB 2.0 Buchse Power supply: Power supply 230V 50Hz sek. 9V 300mA Battery: 4 xNiMH rechargeable Battery AA Operating time:... -
Page 5: Manual
By pressing the «ON» Button (4) on the back of the unit it switches on. In the display it appears for 3 sec. : Startup Menu It shows the Type = EFM 235/EFM 255 and the Version Number V X.X After that, the unit switches to: Main Menu In the dark field it shows the selected Mode. -
Page 6: Sub Menu => Mode
Manual EFM 120 Sub Menu => MODE First the upper line is black. By pressing the „ “ Button(4) you can change the Mode. Selection => E-Feld => V-Meter MK1 => HV-Met.MK40 => E-Feld => etc. Press the „ENTER“ button (3) to choose the selected Mode and the 2nd line becomes black By pressing the „... -
Page 7: Sub Menu => Start
Manual After successful Zero adjustment it displays Press the „ENTER“ button (3) to go back to the Main Menu. By pressing the „ “ Button(4) and select Start then pressing „ENTER“ button (3) you can restart the Zero adjustment. If no Zero adjustment is possible it appears in the display: In this case adjust by the Zero Potentiometer on the back the Voltage to V <... -
Page 8: Sub Menu => Off
Manual EFM 120 In case the “MANUAL” Mode is chosen it appears in the display: In the 1st. line it shows the selected Measure Mode => MANUAL and the Selected Range => 2kV/m. In the 2nd line it shows by E-Feld Measurement E = (actual value) kV/m By pressing the „... -
Page 9: Measure Range
Measure Range Measure Range By E-Field Measurement you can chose the following Ranges: Range EFM255 EFM235 Gain Factor 200V/m 2kV/m x 100 1kV/m 10kV/m x 20 4kV/m 40kV/m 20kV/m 200kV/m By Voltage Measurement with the HV – Measuring Heads you get following ranges: Range MK1 255 MK1 235 MK40 235*... -
Page 10: Grounding
Manual EFM 120 Grounding The device must be grounded properly to measure the amount and the polarity of an electro- static field. For that purpose, the device must be connected to ground by using the grounding jack (10) on the bottom. Grounding the device by a grounded person (e.g. -
Page 11: Scope Of Delivery
Scope of Delivery Scope of Delivery The basic equipment of the electrostatic field meter includes the following components: • Carrying case with ESD foam • Electro static field meter EFM 235/255 • Measuring diaphragm • Power supply • USB cable with mini plug •... -
Page 12: Nimh Storage Battery
Manual EFM 120 NiMH Storage Battery Even if the device is not used for longer terms, the battery must be charged after 6 months to prevent total discharge. If the battery cannot be charged anymore, the battery must be changed. For that purpose, the device must be sent to the manufacturer.
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