Velleman DVM8838 User Manual
Page 4
DVM8838
00 (23/10/2008)
4
Velleman
®
• LCD display with backlight
• data-hold, auto power-off and lock-on function
• MIN, MAX, DIF and record functions
• adjustable emissivity
• high and low alarm
5.
Overview
Refer to the drawings on page 2 of this manual.
1 IR sensor
6
mode button
2 laser pointer beam
7
laser/backlight button
3 LCD display
8
measurement trigger
4 down button
9
grip
5 up button
10
battery cover
A hold indication
F
°C or °F indication
B measuring indication
G
high and low alarm indication
C emissivity indication and value
H
MAX, MIN, DIF, AVH, HAL and LAL value
D battery, lock and laser ON indication
I
indication for H
E backlight ON indication
J
current measurement value
K °C and °F switch
M
alarm set switch
L lock on/off switch
6.
Operation
• Hold the thermometer by the grip [9] and point the IR sensor [1] towards the surface of
which the temperature needs to be measured.
• Pull and hold the measurement trigger [8]. The LCD display [3] shows the current
temperature [J].
• During measurement, the word ‘SCAN’ [B] is visible in the LED display. When the
measurement stops (trigger [8] released), the word ‘HOLD’ [A] is shown. The last
measured value will remain on the display until the measurement trigger [8] is pulled
again, or when the thermometer powers-off automatically (after ± 7 seconds).
• Depending on the mode, the bottom of the screen shows the MAX, MIN, DIF, AVH, HAL and
LAL value. Use the mode button [6] to scroll through the modes of the device. The mode
[I] and corresponding value [H] are shown on the display.
EMS
Emissivity
(*)
MAX
Highest measured value
MIN
Lowest measured value
DIF
Difference between the highest and lowest measured value
AVG
Average value of the temperature
HAL
Higher alarm limit
LAL
Lower alarm limit
(*)
For more information on emissivity, refer to §7 Useful information.
• To set EMS, HAL or LAL, use the up [5] or down [4] button to adjust the value and press
the mode button [6] again to save the value and go to the next item. To cancel mode
selection, pull the measurement trigger [8]. Pushing the mode button [6] after setting the
lower alarm limit will start the set-up cycle again.