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fields,  for  which  a  completely  new  measuring  technology  is 
required for the high-frequency radiation.

Comments on Measuring Technology 

For  a  meaningful  measurement,  the  following  minimum 
requirements  on  the  measuring  technology   for  low-frequency 
alternating fields were setup in the SBM2008:
• Potential-free measurement of AC electric fields.
• Reproducible, high accuracy.
• Compensated  frequency  response  over  the  entire  specified 

frequency  range, which  should go at least from the railway current 
frequency with 16.67 HZ to the kilohertz range.

• High resolution: 0.1 V/m or better.

The  measuring  devices  of  ROM-Elektronik  can  meet  all  these 
requirements.

Preparation of measurement 

1. Check  the measuring device in  accordance with  the instructions 

in the chapter "Before setup". 

2. Beforehand,  a  measurement  of  the  AC   electric  field  is  to  be 

conducted  outdoors  in  order  to  determine  the  basic  load.  If  a 
basic  load over  2 V/m is  displayed,  a  classification  of  the basic 
load can  be performed beforehand. Switching off  the circuits  by 
means  of  the automatic  circuit  breaker  in  your  own  house  fuse 
box  determines  which  fields  are from  the  house and which  are 
from  other  field  sources,  for  example,  generated  from  high-
voltage  lines,  railway  power,  transformers  or  installations 
adjacent  neighboring  homes.  If  external  field  sources  are 
responsible, higher field strengths can be localized there.

©ROM-Elektronik GmbH

Page 9

Summary of Contents for E-Field 1

Page 1: ...E Field 1 ROM Elektronik GmbH Am Grund 13 D 86489 Deisenhausen ROM Elektronik GmbH Page 1 ...

Page 2: ...s 6 Battery Compartment 7 Properties of AC electric fields 8 Comments on Measuring Technology 9 Preparation of measurement 9 Performing the measurement 11 Changing the Battery 13 Universal Applications 13 Corrective measures 13 Reduction of AC electric fields 13 Liability and Warranty 14 Help and Support 14 Technical Data 14 ROM Elektronik GmbH Page 2 ...

Page 3: ...qualified assessment of loading electrical alternating fields in the range of min 10 Hz to 400 kHz We thank you for the confidence you have shown us with the purchase of E field 1 We are convinced that it will fully meet your expectations and want to provide you with useful knowledge on the device The E field 1 enables you to make potential free measurement of AC electric fields The built in filte...

Page 4: ... the device outdoors or use in the rain Clean only the outside with a damp cloth Do not use cleaners or sprays Prior to cleaning or opening the device turn it off and remove all cables connected to the device There are no user serviceable parts inside the device Due to the high measuring accuracy the electronics are sensitive to heat impact and touch Therefore do not place it in direct sunlight or...

Page 5: ...n the left side of the device is pushed upwards the device is turned on The switch has three possible positions OFF ON ON with SOUND To conserve battery power it is advisable to turn off the E Field 1 during longer measurement breaks ROM Elektronik GmbH Page 5 Display On Off Switch Range Selector Switch Filterswitch Sensor ...

Page 6: ...specially optimized for the needs of structural biology It includes the following switch positions 1 10Hz to 400kHz full bandwidth 2 16Hz Band pass filter for the frequency of railway current 3 50Hz to 400kHz High pass filter for power and its harmonics 4 2kHz to 400kHz High pass filter for the so called artificial harmonics above 2 Kilohertz This frequency range corresponds to the volume 2 of the...

Page 7: ...ted at the back of the device The device is to be inserted with a 9V alkali manganese block battery or an equivalent battery Setup Before the first measurement please perform the following steps in sequence ROM Elektronik GmbH Page 7 ...

Page 8: ...nt the following properties of alternating fields are of particular importance A measurement is always sensitive to location and direction i e even a small change in the location or the orientation of the measuring device can have serious effects on the measured value Electric fields enter into solid materials including walls glass etc or even penetrate them Alternating electric fields are generat...

Page 9: ...OM Elektronik can meet all these requirements Preparation of measurement 1 Check the measuring device in accordance with the instructions in the chapter Before setup 2 Beforehand a measurement of the AC electric field is to be conducted outdoors in order to determine the basic load If a basic load over 2 V m is displayed a classification of the basic load can be performed beforehand Switching off ...

Page 10: ...ues allow for a subsequent analysis of the situation In this manner appropriate corrective measures are derived 5 The measurement starts in the measurement area 200 V m and switches only where the display overflows due to high field strength only one 1 is to be seen in the display ist in the general area 2000 V m 6 All measurements should be repeated at different times of day and days of the week ...

Page 11: ...ng electric fields For this use the supplied mounting rods The mounting rods are screwed together In one of the supplied mounting rods there is a small hole through which the screw fits on the device This is necessary so that the E Field 1 is attached securely to the rod By the directional characteristics of the measuring device finding and locating the field source is possible by rotating the pro...

Page 12: ... delay is reached e g the bed or the workplace check all directions according to the above instructions and hold the sensor in the position of the highest display the measured value which is measured in the direction of the highest display can be used as a first approximation as the resulting field strength The probe should be led quietly and smoothly as abrupt movements result in temporarily arti...

Page 13: ...itched off Corrective measures Reduction of AC electric fields Unplugging unnecessary extension cords distribution outlets and loads Installation of a power free switch which automatically separates the power lines of a circuit from the home from the fuse box of the network as soon as the final load is switched off Continuous loads for example the refrigerator must first be connected to a separate...

Page 14: ...nd us the device with the proof of purchase Help and Support If you need help using the device then you can reach us at Fax no 08282 7305 or Tel 08282 7385 for questions about operating the device Technical Data Frequency range min 10 Hz to 400 kHz Measurement range 200 V m to 2000 V m Resolution 0 1 V m Basic accuracy at 50 Hz vs Normal calibration 5 Linearity error at 50 Hz 0 2 V m Ambient tempe...

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