Velleman DVM8855 Manuel d'utilisateur télécharger pdf (Page 4)

DVM8855

• 1mv/°F (1.8mV/°C) analogue output

• adjustable emissivity

• high and low alarm

• contents: manual, tripod, K-type thermocouple, wireless USB receiver, wireless USB transmitter,

software, power supply, connection lead for mV output, carrying case

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

display F °C or °F indication

A scan indication G low battery indication

B hold indication H MAX, MIN, DIF, AVG, HAL, LAL, Tk and memory values

C auto emissivity I high and low alarm indication

D emissivity indication and value J indication for H

E lock and laser ON indication K current measurement value

inside battery compartment M lock on/off switch

L °C and °F switch N alarm set 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

[K].

• During measurement, the word ‘SCAN’ [A] is visible in the LED display. When the measurement

stops (trigger [8] released), the word ‘HOLD’ [B] 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, LAL Tk or

memory values. Use the mode button [6] to scroll through the modes of the device. The mode [J]

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

Tk Temperature measured via thermocouple

LOG # Show memory location number # (max. 20) value

(*)

For more information on emissivity, refer to §8 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.

• Note that MAX, MIN, DIF and AVG only apply to the current measuring session (time between pulling

the trigger [8] and releasing it). Their value is reset when a new measurement starts or the

thermometer switches off.

• To switch between measurements in °C and °F, open the battery cover [10]. The battery cover has

a hinge at the bottom of the device. Hold the battery cover at the top (next to the measurement

trigger [8]) and gently pull away from the device.

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Velleman DVM8855 Manuel d'utilisateur Page 4

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