A&D TM-2440, Instruction Manual

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Proper cuff size
Use a cuff of adequate size. If the size is too small or too big, a
measurement error occurs. Measurements with too small a cuff tend
to be evaluated as high blood pressure, regardless of the proper
blood pressure and normal artery. Measurements with too large a
cuff tend to be evaluated as low blood pressure, especially for those
who suffer from severe arteriosclerosis or have abnormal arterial
valves. The wrong cuff size is a cause of differences between the
d
irect method and oscillometric measurement method. The cuff has
the label described range of the arm circumference. Select and
attach the proper size cuff for each patient. The accuracy of the
blood pressure measurement is guaranteed by the pressure
accuracy of the pressure sensor, exhaust characteristics and
measurement algorithm, so long as the proper cuff and air hose are
used. Inspect the pressure accuracy of the pressure sensor and
exhaust characteristics periodically.
11.2.
EMC Information
The requirements that apply to medical electronic instruments are
described below :
Performance concerning of the EMC guidelines
Medical electrical equipment require special precautions regarding
EMC (Electromagnetic compatibility) and must be installed and put
into service according to the EMC information provided below.
Portable and mobile RF communication equipment (e.g. cell phones)
can affect medical electrical equipment.
The recorder is intended for use in the electromagnetic environment
specified below. The customer or the user of the recorder should
assure that it is used in such an environment.