Operation
4.3 Analyzer Functions
LDS 6
Operating Instructions, 01/2009, A5E00295894-05
55
60 Setup Logbook
60 Setup Logbook Ch1 NH
3
Lock logbook
Clear logbook
You can use this function to delete or lock logbook entries (see also function 3).
4.3.6
Configuration
All functions of this block are only accessible via the password for level 2 except function 89
-Ethernet On/Off which requires code level 3.
Input Menu
Configuration Ch1 NH
3
...Continue
73 Communication
72 Binary Inputs
71 Relay Outputs
70 Analog Output
Following selection of the configuration functions in the main menu by pressing the fifth soft key
("...Continue"), you can branch to the further configuration functions.
70 Analog Outputs
70 Analog Output Ch1 NH
3
measurement values
Suppress negative
4-20mA (NAMUR)
You can use this function to switch the mode of the analog output between NAMUR and non
NAMUR . If the NAMUR mode is chosen in this screen, the lower and upper limits of the analog
outputs are 3.8 and 21.5 mA respectively, according to the NAMUR standard. Otherwise the
limits are 2 and 21 mA. For both modes function 41 is used to set the limits of the analog output
range to 4 mA (start of scale) and 20 mA (full scale). This means that the wider output range
permits recording of measured values outside the adjusted output range, but the scaling is
identical to the 4 to 20 mA span.
If the function "Suppress negative measurement values" is activated, negative measured values
are set to the analog output value which corresponds to a measuring value of 0. This analog
output value depends on the adjusted measuring range.
If negative measured values have an unfavorable effect on further processing, activate this
function. The correct measured value is still output in the display.