Velleman DEM501 User Manual

DEM501
V. 01 – 07/05/2015 5 ©Velleman nv
5. Press the setting button to switch the auto power-off function on or
off.
6. Hold the setting button pressed for 3 seconds to enter the dew point
measurement mode. Hold the setting button pressed again to exit the
function.
7. When powered off, keep the setting button pressed and switch on the
meter to enter the humidity calibration mode. Increase or decrease the
humidity setting with the backlight and °C/°F buttons. Press the
setting button to exit the mode.
8. Briefly press the MIN/MAX button to freeze the reading on the display.
Press again to unfreeze.
9. Hold the MIN/MAX button for 3 seconds to display the recorded
maximum value, briefly press to display the recorded minimum value,
hold pressed to exit the function.
10. Press the on-off button for 3 seconds to switch off the meter.
8. Cleaning and Maintenance
 Wipe the device regularly with a moist, lint-free cloth. Do not use
alcohol or solvents. DO NOT submerge the device in any liquid.
 Store the meter in a dry place away from humidity and vibrations.
 Remove the battery when the meter is to be stored for long periods of
time.
9. Technical Specifications
display
LCD with backlight
sensor type
humidity
precision capacitance sensor
temperature
thermistor (head) and K-type thermocouple
measurement range
humidity
0 % RH ~ 100 % RH
temperature
-20° C ~ 70° C (-4° F ~ 158° F)
dew point temperature
-20° C ~ 70° C (-4° F ~ 158° F)
humidity accuracy
40 % to 60 % RH
+/- 2.0 % RH (@ 23° C +/- 5° C)
20 % to 40 % RH
+/- 3.0 % RH (@ 23° C +/- 5° C)
60 % to 80 % RH
+/- 3.0 % RH (@ 23° C +/- 5° C)
0 % to 20 % RH
+/- 4.0 % RH (@ 23° C +/- 5° C)
80 % to 100 % RH
+/- 4.0 % RH (@ 23° C +/- 5° C)
temperature accuracy
-20° C to 70° C
(-4° F to 158° F)
+/- 1.0° C (1.8° F)

Velleman DEM501 Specifications

General

Brand	Velleman
Model	DEM501
Category	Measuring Instruments
Language	English