U-12
KRN1000 Series
-|Transparent setting guide|-
Special Function
It displays the applied measuring value of the set special
function. Depending on Input type, applied special function is
different.
•
Setting range :
- When input type is temperature sensor (thermocouple,
RTD): None ↔ Difference
- When input type is analog (voltage, current (shunt)):
Linear ↔ Root ↔ Square ↔ Two Unit
Two Unit is displayed when input type is set as 4-20mA
(shunt).
It is available to set when input type is temperature sensor
(thermocouple, RTD). It displays the deviation of reference
channel measuring value.
(Display value = standard channel measuring value -
reference channel measuring value)
•
The set channel as analog (voltage, current (shunt)) of
Input type is not able to set as reference channel.
•
If there is no set reference channel, it displays standard
channel measuring value.
•
If any one of reference channel, or standard channel is
break (BURN), high-limit value (HHHH), low-limit value
(LLLL) status, it displays as correspond value. If you
select the channel which is used Difference function
as reference channel, it displays the value based on
calculating actual measuring value, not display value of
reference channel.
In case of voltage, current (shunt) input type, this mode
is used when input value is calculated by square for the
desired display value. Reverse of Root, flux signal is
calculated by square for differential pressure signal.
E.g.)In case low-limit range: -5V, high-limit range: +5V and
in case low-limit scale: -1000, high-limit scale: 1000, if
input value is 2V, display value is -20.
It applies low-limit scale and high-limit scale to low-limit
input value and high-limit input value and displays this
values.
E.g.)In case low-limit input value: -5V, high-limit input value:
+5V and in case low-limit scale: -1000, high-limit scale:
1000, if input value is 2V, display value is 400.
In case voltage, current (shunt) input type, this mode
is used when input value is calculated by Root ( ) for
the desired display value. Differential pressure signal of
differential pressure flow meter is calculated Root (
)
for the to-be measured flux. This function is used to
measure flux by input value.
E.g.)In case low-limit input value: -5V, high-limit input value:
+5V and in case low-limit scale: -1000, high-limit scale:
1000, if input value is 2V, display value is approx.
673.32.
For compound pressure, if input pressure is lower than
atmospheric pressure (0), it displays the degree of a
vacuum with mmHg unit. If input pressure is higher than
or same as atmospheric pressure (0), it displays positive
pressure with kg/cm
2
unit.
When using Two Unit function, low-limit value is fixed as
-760mmHg and kg/cm
2
value is able to set within Setting
range 1 to 35.
Two Unit limits scale point as 0 ↔ 0.0 ↔ 0.00 . When
using Two Unit, display unit is automatically changed as
mmHg or kg/cm
2
.
This function has two different unit values and it is
impossible to calculate by recording method and digital filter
and ignore it.
E.g.) If pressure range is -760mmHg to 3kg/cm
2
, and
pressure transmitter outputs 4-20mA, for 4mA input it
displays -760mmHg, 8mA input is unit changing point.
For 20mA input, it displays 3kg/cm
2
.
Functions
History
Linear
Root
Square
Two Unit
Difference (deviation)
It checks data history which is recording at [Menu]-
[Display]-[History]. When recording is stop, it displays
warning message.
•
Checks data history by each group, channel.
•
Data history displays as horizontal/vertical trend, divided
horizontal/vertical trend.
•
Saves the screen as *.bmp file.
It checks the saved data history at internal/external
memory.
Touch [Menu]-[Display]-[File History].
•
Set the information of display group or channel.
•
Data history displays as horizontal/vertical trend, divided
horizontal/vertical trend.
File History
