PPM–400ST Formaldehyde Meter Operation Manual
Important points
It is important that you are aware of the following
points when using the instrument:
The
PPM–400ST Formaldehyde Meter
is
temperature compensated to operate most accurately
in the range 15–29°C and 40–60%RH.
The results obtained with the PPM–400ST
Formaldehyde Meter are instantaneous readings: a
single reading is not necessarily representative of
long-term personal exposure. A series of readings
taken at short intervals is preferable to infrequent
tests.
Avoid smoking in the environment to be analysed:
tobacco smoke contains aldehydes which will
interfere with the readings.
Care must be taken to ensure that fluid or dust is
not drawn into the instrument. This could
permanently damage the sensor.
The PPM–400ST Formaldehyde Meter has been
designed to be sufficiently robust for everyday field
use. However, should the unit sustain a severe
physical shock, the operation and calibration of the
instrument should be checked using the supplied
formaldehyde Calibration Standard.
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