100/180MM DISTRIBUTED GRAPHIC RECORDER: USER GUIDE
HA029324
Issue 11 Oct 14
Page 124
4.3.11 FUNCTION (Cont.)
THERMOCOUPLE CAL CORRECTION
This function allows two correction value tables, each of up to 25 points to be entered. For each point,
a correction value can be entered, and the recorder will interpolate between points. The output of this
maths function is the sum of the source channel and the two correction values. The Instrument correc-
tion values are obtained from a recorder calibration carried out by the user or by an agency; the thermo-
couple correction values are obtained from the thermocouple test certifi cate.
Figure 4.3.11v shows a confi guration page with an ‘Inst Calibration’ table of three points, and a ‘T/C cali-
bration‘ table of four points.
Figure 4.3.11v Thermocouple Cal correction confi guration page
Thermocouple
Select any real or virtual channel, or ‘Constant’ as the source channel.
Serial number
Enter an identifi er for the thermocouple.
Inst calibration points Enter the number of Instrument calibration points that are to be used (25 max.).
Inst cal temp n
The nth calibration point where ‘n’ = 1 to the ‘Inst calibration points’ value.
Inst cal corr n
The correction value for the nth calibration point.
T/C calibration points Enter the number of Thermocouple calibration points that are to be used (25 max.).
T/C cal temp n
The nth calibration point where ‘n’ = 1 to the ‘T/C calibration points’ value.
T/C cal corr n
The correction value for the nth calibration point.
Other parameters are as described in ‘Channel confi guration’ (
section 4.3.3
)
Notes:
1. For both tables, each ‘cal temp’ value must be higher than the previous one.
2. For both tables, no correction is applied if the input is less than the minimum table entry, or
greater than the maximum table entry.
Units
Thermocouple Cal Correction
3
20
1) Channel 1
AX 10023
1) Math 1
100.00
Thermocouple
Function
Value
Maths Number
Serial number
Inst calibration points
Inst cal temp 1
Inst cal corr 1
Inst cal temp 2
Inst cal corr 2
Inst cal temp 3
Inst cal corr 3
T/C calibration points
T/C cal temp 1
T/C cal corr 1
T/C cal temp 2
T/C cal corr 2
T/C cal temp 3
T/C cal corr 3
T/C cal temp 4
T/C cal corr 4
Units
Descriptor
-0.2
200
0.2
400
-0.18
4
0
-1.2
100
-1.1
200
-0.98
300
-0.8
Units
Math 1
Apply Discard
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