SE-RDA User Instructions 100507-03 B
Copyright © 2021 The S.E.A. Group
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Table of contents
Respiratory data analyser
SE-RDA
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User instructions
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Table of contents ................................................................................................................................ 2
Description ......................................................................................................................................... 2
Principle of operation .......................................................................................................................... 2
Unpacking .......................................................................................................................................... 3
Components ....................................................................................................................................... 4
Operation functions ............................................................................................................................ 6
Operation of the SE-RDA ................................................................................................................. 10
Decontamination and cleaning ......................................................................................................... 13
Packing and storage ......................................................................................................................... 14
Calibration ........................................................................................................................................ 14
SE-RDA PC software ....................................................................................................................... 15
Using the SE-RDA software ............................................................................................................. 21
Real-time graph mode ...................................................................................................................... 29
Description
The SE-RDA Respiratory Data Analyser is a portable instrument for recording and
analysing real-time flow rate and mask pressure data for unassisted filtering respirators
in real use situations in the workplace, for durations up to a full shift.
The SE-RDA may be used to provide information on the suitability of assisted filtering
respirators in particular work environments, and to assess the adequacy of the positive
pressure air delivery rate in those environments.
The SE-RDA unit is supplied with a detachable adapter designed for use with Sundström
SR100 half-mask and SR200 full-face respirators.
Principle of operation
The SE-RDA unit is connected to a respirator via the SR100/200 adapter fitted in place of
one of the respirator’s exhalation valves. The SE-RDA unit measures and records
pressure in the breathing zone of the respirator via the pressure tube. Pressure data is
then downloaded to a computer. Using the pressure-flow characteristics of the
precalibrated filter and exhalation valve, the SE-RDA software converts pressure data to
breathing data. The breathing data may then be analysed in various ways using the SE-
RDA software.
