Simex multicon cmc-99 - Page 142

User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
Current inputs parameters are:
–
Name
– each built-in input already has a name given by the device and user cannot
change it, for description of
Name
parameter see
Fig. 7.75
,
–
Unit
– parameter which displays measurement unit -
mA
,
–
Mode
– defines measurement range,
–
Low limit
– defines measurement level bellow which in logical channel will be
displayed
Lo
state,
–
High limit
– defines measurement level above which in logical channel will be
displayed
Hi
state,
NTC (temperature or resistance measurement) inputs parameters are:
For temperature mode:
–
Name
– each built-in input already has a name given by the device and user cannot
change it, for description of
Name
parameter see
Fig. 7.75
,
–
Unit
– parameter which displays measurement unit - °
C
,
–
Mode
– defines measurement mode (temperature or resistance),
–
Low limit
– defines measurement level bellow which in logical channel will be
displayed
Lo
state,
–
High limit
– defines measurement level above which in logical channel will be
displayed
Hi
state,
–
NTC Equation
– allows to choose method of entering thermistor characteristic.
There are two possibilities:
•
equation with Beta parameter, where:
◦ A – resistance in reference temperature,
◦ B – β
25/100
parameter,
◦ C – reference temperature in Centigrades,
•
equation based on Steinhart-Hart coefficients:
T =
1
AB⋅ln RC⋅ln R
3
Measurement range which will be displayed is calculated based on equations above. In the
second place
Low limit
and
High limit
parameters are taken into consideration when
determining displayed range.
For resistance mode:
–
Name
– each built-in input already has a name given by the device and user cannot
change it, for description of
Name
parameter see
Fig. 7.75
,
–
Unit
– parameter which displays measurement unit -
Ω
,
–
Mode
– defines measurement mode (temperature or resistance),
–
Low limit
– defines measurement level bellow which in logical channel will be
displayed
Lo
state,
–
High limit
– defines measurement level above which in logical channel will be
displayed
Hi
state,
Digital inputs parameters are:
–
Name
– each built-in input already has a name given by the device and user cannot
change it, for description of
Name
parameter see
Fig. 7.75
,
–
Mode
– defines input voltage ranges (TTL: „
0
" for 0÷0.8V; „
1
" for 2÷5,5V and HTL:
„
0
" for 0÷4.2V; „
1
" for 11.5÷30V),
142