Simex SRL-49, User Manual

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User manual - METER SRL-49
Symbol used in the manual: [^] [v]
Functions :
• Change of the present menu,
• Modification of the parameter value,
• Change of the display mode.
6. PRINCIPLE OF OPERATION
After turning the power supply on, device ID and software version are showed on the
display, next the controller goes to the measurement mode.
6.1. MEASUREMENT MODE
In the measure mode, the measurement results, converted over selected characteristic,
are displayed on the LED display. The measurement range equal to the nominal range is
called:
nominal measurement range, and the measurement range equal to the extended
nominal range is called: permissible measurement range (Figure 6.1, 6.2).
Figure 6.1. Definitions of measurement ranges in mode 4 ÷ 20mA
If the result of measurement exceeds the permissible measurement range , warning ”-Hi-” or
”-Lo-”
is displayed rather than input signal, depends on exceeded value (see description of
“Lo r”
i
“Hi r”
parameters, paragraph
”inPt” menu
).
Figure 6.2. Definitions of measurement ranges in mode 0 ÷ 20mA
If the measurement value do not exceeds permissible measurement range but
displayed value exceeds range -999 ÷ 9999, the warning ”-Ov-” is displayed rather
than the calculated result.
In the measurement mode user can check main thresholds values. After pressing
[^]
or
16
” Lo r ” parameter
” Hi r ” parameter
4 mA 20 mA
permissible measurement range
nominal measurement range
” Hi r ” parameter
0 mA 20 mA
permissible measurement range
nominal measurement range
i