G-Tek 27 Series, Operating Manual

Page: 18 / 27

Page No . 16
Function key.
Up key.
Down key.
Enter key.
O
PERATION
8.1 F
RONT
P
ANEL OF
R
ECORDER
After the proper wiring is done, pen and chart fitted properly, Power ON the recorder. The pen
will move towards the center of the chart. After it reaches the center of the chart, it stops there.
After a while pen will move to the position on the charts as per the parameter value. The center
of the chart is designated as range low of the recording. Whenever the measured value is less
than the range low of the recorder, pen moves till zero and stops there. The full range of the
chart arrived as under.
Full range (100% of the chart) value = Range low of the chart + Span of the chart.
e.g.: for the chart with the marking of +50 to -100 with +50 marked at the center of the chart,
Range low = +50
Span = 150
Full range = 50
– 150 = -100
For the recorder in example, when the parameter value is equal or less than -100, the pen will
remain at the full scale of the chart. When the parameter value is equal or more than +50, pen
will remain at the center of the chart.
Figure 8 Recorder Front Panel
K
EYS
:
There are three multifunction keys available on the front panel of the chart recorder to
configure the different parameters. The names of these keys are described as below:
&
Up Key
Function
Key
Down
Key
Display