Carrying Out A Measurement; Handling, Putting-Into-Operation - VOLTCRAFT 309 Bedienungsanleitung

and the minimum value (MIN) from T1 to T4. With the left mouse key (keep it pressed)
and the mouse cursor you can zoom details of the graphics. With the "Undo Zoom"
you can undo the zoom. The depiction of the table "Tabular" has already been
described sufficiently.
D) View
Click the field "View" and there "Control Panel". Now the front of your thermometer
309 is depicted with changing display. On a limited scale (no setup settings) you can
now operate your thermometer from the PC with the mouse. If you click the real time
graph, however, the screen is filled with the real time display. Click the "x" at the top
on the right in order to close the window "Real Time Graph".
E) Window
Click "Window" and there Tile for the total view or Cascade for a minimised view.
Click "Panel" for the Thermologger (front) in the foreground or "Real- Time- Graph"
for the real time measurement in the foreground or, if activated, "Data Logger" for the
data log depiction in the foreground.
F) HELP
If you click this symbol (question mark above a book) you will get to the described
help menu.

Carrying out a measurement

In general:
The temperature measuring range of the digital thermometer reaches from -200° C
to +1370° C.
The temperature range of the supplied sensor reaches from -50° C to max.! 200° C.
Do not measure temperatures that are higher than +200° C (= 392° F) with the sup-
plied sensor.
Take into account that "outside" the temperature range +18° C to +28° C (= range of
the guaranteed measuring accuracy) it is only permitted to expose the thermoele-
ment to the temperature that is to be measured.
Measuring:
Proceed as follows to measure the temperature:
1. Connect, depending on the demand, either one or two or four K type temperature
sensors (you find two attached) to the thermometer an turn it on.
Do not connect any voltages. This might destroy the device.
2. Hold the temperature sensor/s (wire end/s) at/into the dead measuring medium
(heat sink etc., but no caustic or combustible liquids!).
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Presentation, system prerequisite(s)
This digital thermometer 309 with PC connection is equipped with several special
features which complete some measuring in a significant way:
With the function "MAX MIN" you can, for example, detect and record the maximum or
the minimum measuring value that appears. With the function "HOLD" it is possible to
record quickly changing measuring values (for the measuring protocol). The recording of
the measuring values is started with the button "REC". With the button "° C/° F" you can
choose between two measuring units: the "English" unit in Fahrenheit and the unit used
in the "remaining European countries" in Celsius. If you actuate the button "T1 - T2" dur-
ing the turning-on, you will get to the setup menu. Further information will be given later.
By means of the supplied interface circuit (serial), a bidirectional connection to the
PC is made. After the installation of the relevant software on the PC, the digital ther-
mometer and the PC can communicte. The following requirements must be met for
installing and using the software:
At least 486 DX2/ 100 with 16 MB RAM or faster/bigger
At least Windows `95 or `98 or NT 4.0 or higher
A CD ROM drive, a resolution of at least 800 x 600
And finally approx. 7 MB free fixed-disk storage
The measuring range reaches from –200° C to +1370° C or from –328° F
to +2498° F. The temperature range of the supplied sensors, however, is limited to
a range that reaches from –50° C to +200° C. The digital thermometer 309 can be
used universally for hobby, profession or school purposes, etc.

Handling, putting-into-operation

A Insertion of the battery – Replacement of the battery
Your measuring instrument must be equipped with a 9 Volt battery to function cor-
rectly. When the battery replacement symbol appears at the top on the left of the dis-
play, the battery must be replaced. Proceed as follows:
- Disconnect your measuring instrument from voltage circuit and PC,
- remove the temperature sensors from the measuring instrument,
- turn it off and
- remove the battery chamber cover pushing it carefully in arrow direction.
- Disconnect the used battery from the connecting clip and
- replace the battery with a new battery of the same type.
- Insert the connected battery into the battery chamber after completed replace-
ment of the battery and
- close the battery chamber carefully.
- Ensure not to squash the cable of the connecting clip (red/black) when closing
the battery chamber.
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