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Note: These guidelines may not be applicable in all cases. The diffusion of electromagnetic variables is influenced
by absorption and reflections in the building, objects, and people.
a
In theory, the field strength of stationary transmitters, such as base stations for cellular phones and land
mobile radios, amateur radio stations, AM and FM radio, and TV transmitters, cannot be predetermined
precisely. To determine the electromagnetic environment with regard to stationary transmitters, consider
carrying out a study of the site. If the measured field strength at the site where the multiFiltrate device is used
exceeds the aforementioned compliance level, the multiFiltrate should be observed in order to verify that it
is working as intended. If unusual performance characteristics are observed, additional measures may be
necessary, such as a different alignment or a different site for the multiFiltrate device.
b
Above the frequency range of 150 kHz to 80 MHz, the field strength should be lower than 3 V/m.
Recommended safety distances between portable and mobile
RF telecommunication devices and the multiFiltrate device
Recommended safety distances between portable and mobile RF telecommunication devices and the
multiFiltrate device
The multiFiltrate device is designed for operation in an electromagnetic environment in which RF disturbances
are controlled. The customer or operator of the multiFiltrate device can therefore help to prevent electromagnetic
interference by maintaining the minimum distance between portable and mobile RF telecommunication devices
(transmitters) and the multiFiltrate device. This minimum distance depends on the output power of the
communication device, as specified below.
Nominal power of the
transmitter
W
0.01
0.1
1
10
100
For transmitters whose maximum nominal power is not specified in the table above, the recommended safety
distance "d" (in meters, (m)) can be determined using the equation which belongs to the relevant column, where
"P" is the maximum nominal power of the transmitter in watts (W) in accordance with the information of the
transmitter manufacturer.
Note: These guidelines may not be applicable in all cases. The diffusion of electromagnetic variables is influenced
by absorption and reflections in the building, objects, and people.
12.6 Operating conditions
Operating temperature
range
Atmospheric pressure
Relative humidity
Fresenius Medical Care multiFiltrate IFU-EN-UK 15A-2015
Safety distance depending on the transmission frequency (m)
150 kHz to < 80 MHz
d = 1.2 √P
0.12
0.38
1.2
3.8
12
15 °C to 35 °C
700 hPa to 1060 hPa
30% to 75%, temporarily 95%, non-condensing
80 MHz to < 800 MHz
d = 1.2√P
0.12
0.38
1.2
3.8
12
Chapter 12: Specifications
800 MHz to 2.5 GHz
d = 2.3 √P
0.23
0.73
2.3
7.3
23
12-9
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