Velleman DVM8855 User Manual

Page 9

DVM8855

02/03/2009

Velleman Components nv

a exit the application

max. measured temperature

b select com port

m min. measured temperature

c print data

n data window

d switch between online and offline

o lower alarm limit

e save/load data

p higher alarm limit

f clear graph

q set lower range graph

g clear all data

r set higher range graph

h current COM port

s graph display setup

i status (OnLine = connected)

t set sampling time

j data input (red = receiving)

u current temperature

k current date and time

v current emissivity setting

Using the wireless link

Note: connection can only be established when the thermometer is in scan mode. Consider placing

the meter in lock mode [M] for easy handling.
• Make sure the USB connector of the receiver is plugged into the PC. The red status LED on the

receiver lights up.

• Plug the DVM8855 in the transmitter stand. Place the connector pins at the front of grip [9] first,

than tilt down until the meter snaps in place. To remove, lift the back up first.

• Connect the DC connector of the included power adaptor into the transmitter stand and plug the

other end into the mains (100~240CAC, 50~60Hz).

• Start the DT-8855 software and set the correct com port [b], most likely this will be COM3 (verify

with ‘device manager’).

• Press the ‘ON’-button on the transmitter stand and press the online button [d]. When the

thermometer is in SCAN mode, the status LEDs of both transmitter and receiver start blinking in
sync, indicating there is communication. Data will be shown in the data window [n].

• Setup the software as desired. Set the sample time [t], this is the time the software waits

between 2 interrogations of the thermometer. Set the lower [o] and higher [p] time limits. These

are indicated by a horizontal line on the selected temperature. When the temperature crosses
these lines, the graph will turn red (see example below).

• The measured data can be saved and recalled [e]. The file format is .xls (Excel). Data which is

not saved prior to closing the application is lost.

• Note that the transmitter stand also has an analogue output which can be connected to a plotter

(not incl.) or similar device. Signal scale is 1mV/°F (±1.8mV/°C).