Dew Point; Data Logger - VOLTCRAFT IR-1600 CAM Bedienungsanleitung

f) Dew point
The menu item "DEW POINT" is used for measurement without the camera. This makes it easier to read the measure-
ments because of the homogeneous image background.
Point the measuring opening (13) at the measured object vertically. Observe that the measured object is not smaller
than the IR measuring area of the device.
Push and hold the measuring button (9). In the display, the main measured value and all other enabled parameters
are displayed. The displayed main measured value corresponds to the average surface temperature of the IR measur-
ing area. During the measurement, the symbol "Start" in the display is concealed and the symbol "Pause" is shown.
The bar display at the lower edge of the screen shows the correspondence of IR temperature and dew point (DP) in
percent for quick overview. It is used as a warning display for possible mould danger.
Blue range: no danger
Yellow range: possible danger
Red range: acute danger
After releasing the measuring button (9), the last measured value is displayed until automatic deactivation (can be
pre-set) for better reading. The symbol "Pause" goes out and the display "Start" appears to indicate readiness for
measurement.
The dew point and the evaporation temperature are calculated values that result from the IR surface
temperature, the ambient temperature and the relative humidity. The sensors for ambient temperature and
relative humidity are installed in the meter (14). Observe the delayed measurement by the constructional
placement of the sensors. Give the meter enough time to adjust to the ambient conditions (approx. 30
minutes for a stable measured value).
g) Data logger
The menu item "DATA LOGGER" is used to record the measuring progress.
In data logger mode with internal device memory, only the IR temperature is recoded. When using an optional memory
card, all measured values are additionally saved in an editable text file (.txt).
Point the measuring opening (13) at the measured object vertically. Observe that the measured object is not smaller
than the IR measuring area of the device.
To start recording, push the measuring button (9) briefly. The recording is started with the pre-set measuring interval.
The lock symbol marks the locked permanent measuring mode. The measuring button is locked and the data are
stored.
In the display, the main measured value is displayed as a figure. The pre-set high and low alarm levels are always
displayed as coloured threshold lines.
To terminate the data logger measurement, push the button "ESC". The measuring function is terminated; the data
remain in the device memory. The saved data are saved with time and date designation.
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