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13 

Electrostatic Field Meter Mode 

 

6.

 

Electrostatic Field Meter Mode 

For operation in electrostatic field meter mode the upper plate has to be removed. 

Νο

Νο

Νο

Νο

 measuring 

head may be installed. 

6.1.

 

Metering an Electrostatic Field 

Only static (DC) fields can be measured with the integrated electrostatic field meter

1

. The display 

directly shows the electric field strength in (kilo)Volt/meter: 

 

6.2.

 

Adjust Range 

By pressing button 

«A»

 the selected range can be changed. You can choose between the follow-

ing options: 

 

6.3.

 

Zero Adjust 

The provided protective cap has to be mounted on the modulator system to perform a zero ad-
just. After pressing 

«A»

 and 

«B»

 simultaneously for about 1s the device asks whether a zero 

adjust should be performed: 

 

Quit by pressing button 

«B»

 or press 

«A»

 

YES

 to advance. The device asks to put on the protec-

tive cap: 

 

Put the protective cap on the modulator system and press 

«A»

 to perform the zero adjust. Press-

ing button 

«B»

 closes the menu. 

7.

 

Further Messages 

In case of a damaged electrostatic field meter the device displays: 

                                                             

1

 Frequenz f<1Hz 

PUT ON COVER ? 

A<YES  

                         NO>B 

ZERO ADJUST ? 

A<YES  

                         NO>B 

EFIELD R=20kV/m 

E = 0,0kV/m 

Summary of Contents for CPM 374

Page 1: ...MANUAL Charge Plate Monitor CPM 374 Incl Electrostatic Field Meter System Prof Dr Ing Hans Kleinw chter...

Page 2: ...Setup 8 4 3 2 Calibration 10 5 Voltmeter Mode 11 5 1 Voltage Metering 11 5 2 Setting up the Measurement Range 11 5 3 Settings 11 5 3 1 Change distance 11 5 3 2 Zero Adjust 12 6 Electrostatic Field Me...

Page 3: ...ply As the CPM 374 is menu driven and operated by 2 pushbuttons the device is very user friendly For a better orientation the selected parameters are displayed in the double spaced LCD display The dev...

Page 4: ...up 1 3 2 4 6 5 11 13 12 8 7 10 9 1 Plate electrode 8 Handhold 2 LCD Display 9 Mains connection 12V DC 3 Button A 10 Serial interface 4 Protective cap 11 1V analog output with banana jack 5 Modulator s...

Page 5: ...the EEPROM and displayed after turning on By selecting Decay Time AUTO the decay time for the positive and the negative voltage is de termined automatically AUTO is recommended because the Start butto...

Page 6: ...offset voltage is measured after a defined time period The measurement is finished after determining the offset voltage All data required e g to quali fy an air ionizer can be read off the display The...

Page 7: ...To save the data nevertheless the memory has to be erased Therefore the following prompt is displayed Skip the deleting process by pressing button B and continue to the next measurement The last resu...

Page 8: ...3s the display returns and you can select the new value by pressing button A 4 3 Settings By pressing A and B simultaneously the device prompts after 1s Press A to enter SETUP or B followed by A to e...

Page 9: ...ards the time period for the offset voltage measurement is inquired Confirm the displayed value by pressing A or press B to select a new one Values are switched in the following order The selected par...

Page 10: ...ards Press button B to discard the changes The old parameters are set again and the changes that have been made are discarded 4 3 2 Calibration By pressing B followed by A after the SETUP question the...

Page 11: ...voltmeter mode the display shows By pressing A the following ranges can be set The display shows the current range in the example above R 2kV 5 3 Settings After pressing A and B simultaneously the dev...

Page 12: ...as to be grounded Ground the measuring head and confirm that by pressing button A Afterwards the zero adjust is performed and the device returns Important During the zero adjust external voltage must...

Page 13: ...choose between the follow ing options 6 3 Zero Adjust The provided protective cap has to be mounted on the modulator system to perform a zero ad just After pressing A and B simultaneously for about 1...

Page 14: ...nty In case of proper operation according to the manual we issue a guarantee of 24 months Mechan ical damage and battery destruction by wrong handling are excepted Guarantee expires on opening the dev...

Page 15: ...electrode is insulated it has to be protected from electrostatic induction Electrostat ic induction can be effected by a person passing by or by moving a charged object close to the instrument Extern...

Page 16: ...16 Manual CPM 374...

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