WIKA T53 - Manual (Page 23)

3
AI_TRANSDUCER Block Parameter List
 .8 .8 .Sensor .calibration, .Description
Sensor .calibration .is .a .very .useful .function .when .the .transmitter .output .needs .to .be .adjusted .to .the .sen-
sor .signal, .e .g . .when .the .temperature .sensor .does .not .correspond .to .the .ideal .values .for .the .selected .
temperature .range . .The .results .depend .on .the .accuracy .of .the .calibrator .or .reference .equipment . .In .the .
following .a .temperature .sensor .calibration .is .described, .however .the .principle .can .be .used .for .all .input .
types .
SENSOR_CAL_METHOD_1 ./ . .defines .the .use .of .either .“Factory .trim .Standard” .(the .factory .defined .val-
ues .calculated .according .to .the .valid .norms) .or .“User .Trim .Standard” .(the .sensor .calibrated .values) .in .
the .transmitter .for .sensor .1 .and . .respectively . .During .sensor .calibration .SENSOR_CAL_METHOD_1 ./ . .
must .be .set .to .“Factory .trim .Standard” .= .103 .
The .sensor .calibration .function .in .T53 .will .change .the .slope .of .the .linarisation .curve .so .the .curve .is .ad-
justed .to .the .connected .sensor . .To .obtain .accurate .temperature .measurement .in .the .range .e .g . .0 . . .100 .
°C .apply .to .the .sensor .a .temperature .e .g . .of .5 .°C .as .the .low .temperature .and .e .g . .95 .°C .as .the .high .tem-
perature .through .a .precise .temperature .calibrator .
At .sensor .calibration .the .succeeding .procedure .must .be .followed .precisely .(Example: .sensor .1):
. 1 . .SENSOR_CAL_METHOD_1 .= .103 .
.  . .Apply .the .low .temperature .of .the .calibrator .to .the .sensor .
. 3 . .CAL_POINT_LO_1 . .= .5 .00 .(type .in .the .low .temperature .of .the .calibrator) .
. 4 . .CAL_ACTUAL_LO_1 .= .1 .00 .(The .measurement .of .the .deviation .starts .by .typing .in .a .random .value) .
. 5 . .Apply .the .high .temperature .of .the .calibrator .to .the .sensor .
. 6 . .CAL_POINT_HI_1 .= .95 .00 .(type .in .the .high .temperature .of .the .calibrator) .
. 7 . .CAL_ACTUAL_HI_1 .= .1 .00 .(The .measurement .of .the .deviation .starts .by .typing .in .a .random .value .
. .
and .T53 .calculates .the .curve .slope .according .to .the .measured . .
. . deviations .) .
. 8 . .SENSOR_CAL_METHOD_1 .= .104 .(the .sensor .calibration .just .carried .out .is .used)
 .8 .9 .Sensor .Calibration .Parameters
Parameter
Rel.
Index
FF
Description Type Store Size
byte
RO /
R/W Min. Max. Default
CAL_POINT_LO_1 46
The .low .calibration .value .applied .to .sensor .1 .
The .value .from .either .a .calibrator .or .a .reference .equip-
ment .
Float SRC 4 R/W -10 38
CAL_ACTUAL_LO_1 47
Entering .any .value .will .force .the .device .to .automatically .
measure .and .store .the .actual .low .point .value . .Must .be .
entered .with .the .applied .CAL_POINT_LO_1 .value
Float SRC 4 R/W -10 38
CAL_POINT_hI_1 48
The .high .calibration .value .applied .to .sensor .1 .
The .value .from .either .a .calibrator .or .a .reference .equip-
ment .
Float SRC 4 R/W 10 38
CAL_ ACTUAL _hI_1 49
Entering .any .value .will .force .the .device .to .automatically .
measure .and .store .the .actual .high .point .value . .Must .be .
entered .with .the .applied .CAL_POINT_HI_1 .value
Float SRC 4 R/W 10 38
SENSOR_CAL_METhOD_1 50
Enables .or .disables .the .last .sensor .calibration .for . .
sensor .1 .
103 .= .Factory .trim .standard .(calibration .values .disabled) .
104 .= .User .trim .standard .(calibration .values .enabled)
Un-
signed .
8
SRC 1 R/W 103
SENSOR_CAL_LOC_1 51 The .last .location .of .the .calibrated .sensor
OCTET_
STRING
SRC 3 R/W ” . . . . . .”
SENSOR_CAL_DATE_1 5 The .last .date .on .which .the .calibration .was .performed
7 .* .Un-
signed .
8
SRC 7 R/W
0,0,0,0, .
1,1,103
SENSOR_CAL_WhO_1 53
The .name .of .the .person .responsible .for .the .last .sensor .
calibration
OCTET_
STRING
SRC 3 R/W ” . . . . . .”
CAL_POINT_LO_2 54
The .low .calibration .value .applied .to .sensor . .
The .value .from .either .a .calibrator .or .a .reference .equip-
ment .
Float SRC 4 R/W -10 38
CAL_ACTUAL_LO_2 55
Entering .any .value .will .force .the .device .to .automatically .
measure .and .store .the .actual .low .point .value . .Must .be .
entered .with .the .applied .CAL_POINT_LO_ .value
Float SRC 4 R/W -10 38