
Engineering Manual 2408
i Indicator
4.5.2.1
Example: To Select a Different Thermocouple Type
Do This
This Is The Display You Should See
Additional Notes
Enter configuration level as described in section 4.2.1.
Notes:
The next parameter is cold junction compensation,
<
CJC
>
. It is used to compensate for ambient temperature
changes measured at the point at which the thermocouple (or compensating) cable connects to the indicator.
Automatic, Auto, measures the temperature at the rear terminals and compensates for any ambient temperature
changes. It will only be necessary to change the
<
CJC
>
parameter if an external temperature reference source is
to be used.
Sensor break is measured by the impedance,
<
imP
>
, of the sensor circuit and an alarm is given if this is greater
than a set amount. For thermocouples set this to
<
Auto
>
. For certain types of sensor its working impedance
may be greater than the 1.5K
Ω
set by Auto. It will only be necessary to change
<
imP
>
if this type of sensor is to
be used.
4.5.2.2
Example: To Adjust Display Reading for a Process Type Input
This example is 4 – 20mA input to read 0 to 100 on the display
Do This
This Is The Display You Should See
Additional Notes
Enter configuration level as described in section 4.2.1.
The mA input is selected in the same way as the thermocouple input above.
1.
Press
until the
‘Input List’
header is shown
2.
Press
until
<
inPt
>
is
shown
3.
Press
or
to select the
input type
The display will return to
<
inPt
>
after approximately 2 seconds
iP
r.tc
inPt
2 secs
1.
In the input list press
until
<
inP.L
>
is shown
2.
Press
or
to set the low
input eg 4mA
4.0
inP.L
2 secs
3.
Press
until
<
inP.H
>
is
shown
4.
Press
or
to set the high
input eg 20mA
20.0
inP.H
2 secs
5.
Press
until
<
VAL.L
>
is
shown
6.
Press
or
to set the low
displayed value eg 0.0
0.0
VAL.L
2 secs
7.
Press
until
<
VAL.H
>
is
shown
8.
Press
or
to set the low
displayed value eg 100.0
100.0
VAL.H
2 secs
The display will return to
<
inPt
>
after approximately 2 seconds
Inp.L
eg (
4
)
Inp.H
eg (
20
)
VAL.H
eg (
10
)
VAL.L
eg (
0
)
Displayed value
Electrical Input
40
Part Number HA027240 Issue 5.0 Feb 2015