11. Programming With Programming-Menus
66
If a channel with a characteristic is deactivated or programmed with a different
range, the characteristic is subsequently reactivated by programming the spe-
cial range
´Lin´
by means of the keyboard or command '
B99'
.
11.4
Special Functions
The data logger 2690-8 has a separate menu
allowing access to all ALMEMO® special func-
tions, which despite only rarely being required
during routine operation, are very useful for
some applications (see manual 6.10). These
functions can (to a certain extent) be very com-
plex and should only be used if their operation
is completely understood.
11.4.1
Print Cycle Factor
For the adaptation of the data recording to the update speed of the individual
measuring points it is possible to program a print cycle factor between 00 and
99 to output measuring points less often or not at all (see manual 6.10.6). Only
disturbed measuring points, e.g. on exceeding of limit values will always be out-
put. Generally, the print cycle factor of all measuring points is cleared or set to
01, i.e. all activated measuring points will be output at each cycle. If a different
factor, e.g. 10 is programmed, the corresponding measuring point will only be
put out once in ten times, however, if 00 is programmed it will not be output. The
data recording also allows to suppress unnecessary measured values and, as
a result, saves memory space.
Enter the print cycle factor (s. 9.5) in function:
Print cycle factor: 01
Clearing the print cycle factor with the key:
<CLR>
11.4.2
Minimum Sensor Supply Voltage
Similarly to all ALMEMO
®
devices, the sensor supply voltage is also monitored
in the 2690-8. It is also displayed in the menu
Power supply
(s. 11.7). However,
there are also sensors, which require for a correct operation a supply voltage,
which requires a charged accumulator or a power supply unit. To avoid meas-
uring errors, the sensor programming allows to individually program the required
minimum sensor voltage for each transducer. In case of falling below this volt-
age the measured value is treated as sensor breakage (indication L flashes).
Entering the minimum sensor supply voltage:
U-Sensor Min
: 12.0 V
Switching off the voltage control with the key:
<CLR>
U-Sensor Min: ---- V
* SPECIAL FUNCTIONS *
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
Connector: 1 Channel: 11
Print cycle factor:
01
U-Sensor min:
12.0 V
7 Action max:
Start R1
7 Action min:
Ende R2
6 Analog-start:
0.0 °C
6 Analog-end:
300.0 °C
Output function:
MESS
1 Reference ch. 1:
(01)
1 Multiplexer:
(B-A)
Element flags:
IR
Calibration offset: -12345
Calibration faktor:
43210
M PRINT ESC
Содержание ALMEMO 2690-8A
Страница 7: ...2 Table of Contents 7 14 1 Technical Data 81 14 2 Product overview 82 14 3 Index 83 Your contact 88...
Страница 80: ...80 13 DECLARATION OF CONFORMITY...
Страница 86: ...Notes 86...
Страница 87: ...Notes 87...
