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EMF829 ElectroSmog Instruction Manual
I. Safety Instructions
Notes
1. Before measurement, Please check if the low power symbol (
is displayed please replace the batteries.
2. Turn OFF the instrument and remove the battery when not in use for a long time.
3. When the electric field device is connected to the meter, please don't vibrate the meter
especially in measuring.
4. The outside environment and unsuitable operation will influence the accuracy and
function.
Dangers Matters
1. In some cases, working near intense radiation sources may come about life risk.
2. Note that, when there is an electronic introducer (for example, pace maker) in human body,
it may be extremely dangerous in some cases.
3. The equipment operation shall comply with the local safety regulations.
4. The application of equipment that can produce conduction or consume electromagnetic
energy shall comply with its operation instructions.
5. Note that, the secondary radiant matters (for example, reflectors of metal walls) may cause
amplification effect of the electric field.
6. Note that, the electric-field strength near the periphery of radiation sources increases to be
inversely proportional to the third power of the distance. So, when approaching to small
radiant sources, you will immediately feel large electric-field strength (for example,
leakage of wave guide, induction furnace).
7. The tester for electric-field strength may underestimate the pulse signal, especially the
radar signal. As a result, it may have obvious measurement errors.
8. Testers for electric-field strength all have a specified limit on frequency response range.
When the spectrum component of the electric field exceeds such frequency range, it may
generally lead to incorrect estimate and tend to underestimate. Therefore, before using the
tester for electric-field strength, it shall firstly confirm that all the measured components
are within the frequency range specified by such tester.
II. Introduction
2-1 Key words
1. Electromagnetic pollution：
It is the electromagnetic pollution generated by artificial electro field （E）and
magnetic field （ H ） . Any where with a voltage or current there be must such
) is displayed. If it
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Table of Contents
Summary of Contents for Sampo EMF829
- Page 1 EMF829 ElectroSmog Instruction Manual I. Safety Instructions Notes 1. Before measurement, Please check if the low power symbol ( ) is displayed. If it is displayed please replace the batteries. 2. Turn OFF the instrument and remove the battery when not in use for a long time.
- Page 2 electromagnetic fields. All the radio and television transmission will produce electromagnetic field. In the applications of industrial and commercial there are also electromagnetic fields. Human can’t have any sense in the electromagnetic fields but it is really affect the inner of human body. 2.
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Page 3: Common Specifications
that the employees don’t expose to the danger level electromagnetic transmission. For the effective protection some national and international regulations and standards are produced. The permitted power density limit defined in these regulations is the electric field and magnetic field intense in different frequency range and signal state. 1. -
Page 4: Electrical Specification
Directional characteristic：Isotropic, triaxial Measurement range selection：One continuous range Display resolution：0.1mV/m, 0.1 μA/m, 0.1 μW/m², 0.001 μW/cm² Setting time：Typically 1s (0 to 90% of meas. value) Display refresh rate：Typically 400mS Display type：LCD 4 digit Measurement units：mV/m, V/m , μA/m , mA/m , μW/m² , mW/m² , μW/cm² Measurement display value：Instantaneous measured value, maximum value or average value since power-on. -
Page 5: Operation Description
±2.4dB(1.9GHz to 35GHz) Isotropy deviation： about ±1.0dB (f>50 MHz) Overload limit：4.2W/m2 (40 V/m) Temperature response(0 to 50 ℃) ：± 1.5dB VI. Operation Description 4-1 Front panel and back panel description 1. Electric sensor 2. Switch key 3. LCD... - Page 6 key： 1) Press this key once a record will be saved in memory. 2) When the automatically turning off is enabled press this key and hold 2 seconds it will be disabled. When the automatically turning off is disabled press this key and hold 2 seconds it will be enabled.
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Page 7: Lcd Description
key： 1）Press this key to turn into manual reading mode. In this mode press this key to read the next recording. 2）Press this key 2 seconds to turn into clear memory mode. In this mode press this key to circle between” YES（Clear）” →” NO（Don’t clear）”. 3）In alarm limit setting mode press this key to decrease limitary value. -
Page 8: Measurement Unit
10. mV/m and V/m：Electric field intense 11. Bar code is an inductor used to observe measured value of each axis（X，Y，Z） ：Low power indicator 13. M：Indicate that records are saved in memory 14. R：Indicate the manually records reading 4-3 Electric sensor usage description The real triaxial sensor is in the front ball. - Page 9 sensor and there is no symbol. 2） Maximum value：Digitally display the maximum instantaneous value measured after symbol “MAX” appeared. 3） Average value：Digitally display the average value measured after symbol “AVG” appeared. 4） Maximum average value：Digitally display the maximum average value measured after symbol “MAX AVG”...
- Page 10 2.2GHz 0.75 2.45GHz 0.74 4-4-4 Alarm limitary value（ALM） Alarm limitary value is used to automatically supervise the displayed value. It can be input in V/m unit. The minimum value can be set is 0.05V/m. *Alarm limitary value is only suitable to compare with the total value of three axis. 4-5 Settings 4-5-1 Set unit Set the unit with...
- Page 11 Instantaneous value Maximum instantaneous value Maximum average value Average value 4-5-3 Set alarm limitary value（ALM） Long press key to get in limitary value setting mode, the units and digits on the screen will flash to change the setting values. Press key to increase or decrease the value to what you want.
- Page 12 4-5-4 Set CAL Long press key till the symbol ”CA” appeared to get in CAL setting mode, the 4 digits is flashing and can be changed. Press key to increase or decrease to the needed value. Press key to save the set value and quit the setting mode.
- Page 13 1) Open the battery case cover and take out batteries. Turn the left switch to the downside place to disable alarm. Turn the left switch to the upside place to enable alarm. Symbol “ALM” means alarm is enabled. 2) If the measured instantaneous value is exceed the limitary value and if the alarm is enabled the symbol “...
- Page 14 2. Measure several values at different points in your working place or around the region you want to measure. This is very important if you know nothing about this field. 3. Pay more attention to measuring the possible radiant source nearby. Except active radiant source, the components connected to radiant source will also radio electromagnetic field.
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Page 15: Clear Memory
1. Press key to get in reading mode, the symbol “R” will be displayed. 2. Press key to select the record number. 3. Press key to select the unit. 4. Press key to select the axis. 5. Press key to quit this mode. 4-7-3 Clear memory You can clear the memory as the figure show: 1、Long press... -
Page 16: Operation Preparation
3、Press key to clear the whole memory. V. Operation Preparation 5-1 Mount batteries Open the battery case cover and put in the new batteries. 5-2 Change batteries When the voltage is lower than necessary voltage the symbol “ ” will appear and it is time to change batteries.