Recommended Separation Distances - DeVilbiss UltraNeb User Manual

Note 1:
At 80 MHz and 800 MHz the
higher frequency range is
applicable.
Note 2:
Note 2:
These guidelines may not be
applicable in all cases. The propa-
gation of electromagnetic waves
is influenced by absorption and
reflection by buildings, objects
and people
a) The field strength of stationary
transmitters, e.g. base stations
of mobile telephones and
mobile land radio, amateur
radio stations, AM and FM
radio and TV transmitters, can-
not accurately be determined
theoretically in advance. To
determine the electromagnetic
environment due to stationary
transmitters, an investigation
of the site should be consid-
ered. If the field strength,
measured at the location
where the UltraNeb ultrasonic
nebulizer is used, exceeds the
above compliance levels, the
UltraNeb ultrasonic nebulizer
should be monitored to deter-
mine that it is operating cor-
rectly. If any abnormal behav-
iour is observed, further meas-
ures may be required, e.g. resit-
ing of the UltraNeb ultrasonic
nebulizer.
b) Over the frequency range
150 kHz to 80 MHz the field
strength should be below
3 V/m.
30
Electromagnetic immunity (continued)
Electromagnetic environment - Guidance: Portable and mobile radio devices should be oper-
ated no closer to the UltraNeb ultrasonic nebulizer including cables than the recommended
safe distance calculated from the equation corresponding to the transmitted frequency.
Immunity test IEC 60601
Test level
Conducted HF 3 V rms
disturbance 150 kHz - 80 MHz
IEC 61000-4-6
Radiated HF 3 V/m
disturbance 80 MHz - 2,5 GHz
IEC 61000-4-3
where P is the transmitter rated power in Watts (W) as stated by the transmitter manu-
facturer and d is the recommended separation distance in metres (m)
Measurement on-site (see a) should show the field strength of stationary radio transmit-
ters to be less than the compliance level (see b) at all frequencies.
Disturbances are possible in the neighbourhood of devices that carry the
following symbol.

Recommended separation distances

...between portable and mobile HF telecommunications devices and the UltraNeb ultra -
sonic nebulizer. The UltraNeb ultrasonic nebulizer is intended for operation in an electro-
magnetic environment in which the HF disturbance levels are controlled. The customer or
user of the UltraNeb ultrasonic nebulizer can help to avoid electromagnetic interference
by respecting the minimum distance between portable and mobile HF telecommunications
devices (transmitters) and the UltraNeb ultrasonic nebulizer – depending on the output
power of the communications device as shown below. Separation distance in metres
depending on the transmitted frequency:
Transmitter rated 150 KHz - 80 MHz
power in Watts d = 1.2 √P
0.01
0.10
1.00
10.00
100.00
For transmitters with a maximum rated power not given in the table, the recommended
separation distance in metres (m) can be determined by use of the equation in the appro-
priate column, where P is the maximum rated power of the transmitter in Watts (W) as
stated by the transmitter manufacturer
Compliance Electromagnetic environ-
level ment – Guidance
Recommended separation
distance:
3 V rms d = 1.2 √P
150 kHz - 80 MHz (for 150 kHz - 80 MHz)
3 V/m d = 1.2 √P
80 MHz - 2,5 GHz (for 80 MHz – 800 MHz)
d = 2.4 √P
(for 800 MHz – 2,5 GHz)
80 MHz - 800 MHz
d = 1.2 √P
0.12 0.12
0.38 0.38
1.20 1.20
3.80 3.80
12.00 12.00
800 MHz - 2,5 GHz
d = 2.4 √P
0.24
0.76
2.40
7.60
24.00