4. Condensator Mode
The Condensator mode enables the user to
assess the risk of condensation occurring
on surfaces or to confirm whether or not
condensation is present on a surface.
To use the MMS as a Condensator,
connect the Hygrostick probe directly into
EC1 and connect the Surface Temperature
Sensor (either the standard direct-contact
type or the optional infrared remote type)
into EC2. Turn the MMS on by pressing
button . Select the Condensator mode
by pressing successively until the word CONDENSATOR is visible in the top
centre of the LCD. Then press to select relative humidity (%rh), ambient temperature
(TAIR) , dew point temperature (TDEW), surface temperature (TS) or temperature difference
(TDIFF) as required. TSand TDIFF measurements can only be obtained if a Surface
Temperature Sensor is connected to the instrument and held against the surface of
interest. Temperature values can be displayed in OC or OF (see section 5 for setup).
TDIFF is a useful function when investigating condensation as it tells the user how many
degrees a surface is above or below the prevailing dew point temperature. When a
surface is more than 3 OC above dew point, TDIFF is displayed with the message NO
CONDENSATION. When the surface temperature is 3 OC or less above dew point, TDIFF
is displayed with the message AT RISK, NO CONDENSATION. When the surface
temperature is equal to or lower than the dew point, a negative TDIFF is displayed with
the message CONDENSATION. The progress bar is activated when TDIFF is less than
14OC above dew point. It moves from left to right to signify the increasing risk of and
degree of condensation. Table 4. summarises this functionality.
Temperature of Surface Instrument display in CONDENSATOR TDIFF Mode
> 14OC above dew point TDIFF, NO CONDENSATION, inactive progress bar
≤14OC but > 3OC above TDIFF, NO CONDENSATION, active progress bar
dew point
≤3OC above dew point TDIFF, AT RISK, NO CONDENSATION, active progress bar
≤dew point TDIFF, CONDENSATION, active progress bar
Table 4.
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