3000.doc Iss. 2/00
8
DISPLAY CONTRAST: To change this display contrast, press and hold down either the
↑ or ↓ key
the contrast will vary and may be selected for optimum viewing. The contrast and the viewing angle is
changed and it may be desirable to alter the contrast from time to time as your reading position alters.
A selects channel A to the display
B Selects channel B to the display
A-B Displays the difference between probe A and probe B
in this case the millivolt/resistance reading will not be shown.
Fig.3: Display in A-B Mode
SENS A menu is displayed giving the choice of probe configurations, For the model 3002 there are
3 standards to choose from. IEC751, US/JIS, EN-751 in addition there is a fourth option Usr
which allows the operator to store probe characteristics under a file number, up to 20 different
probe characteristics may be stored. NOTE The status line at the top of the display will
confirm the current sensor configuration. To change sensor configuration press SENS key and
from the menu displayed select the option required by pressing the button immediately below.
If the Usr (user) key is pressed a further menu will be displayed, the probe characteristics can
then be entered together with a probe number. A maximum of 20 different probes may be
stored in this way.
Fig. 4:Probe configuration menu
For the model 3001 the menu first offers a choice of Prt’s or thermocouples, if Prt’s are chosen than
the menus are as above. With thermocouples selected a menu will offer a choice of thermocouple
types, press the key below your chosen type to select it. The choice of reference junction configuration
will then be offered AUTO or EXT, the most commonly used option is AUTO which selects the
internal reference. It should be noted that there is a separate reference for each channel and that every
effort has been made to ensure that the best possible performance for the reference junction is
achieved. Should an external temperature be used for the reference then the EXT option should be
selected and a Pt100 probe connected to the RTD input and temperature sensed by this probe will be
used as the reference junction temperature. When the OFF option is chosen the Reference Junction is
turned OFF and the values are referenced to 0°C.
AN IMPORTANT feature of the 3001 thermometer is that each channel may be configured with any
sensor type so that RTD’s may be compared against thermocouples.
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Komentáře k této Příručce