Omega C9000A SERIES - Sensor Span Adjust (Function

68
NOTE
Error polarity applies to CN9000A correction
EXAMPLE READS
CN9000A 404°
Ext. Meter 400°
Error +4
Set (-4) correction at Function .9.
6.2.2 Sensor Span Adjust (Function .35)
Figure 6-2. Sensor Span Graph
Steps for providing correction where two temperatures require
differing amounts of adjustment.
1. Choose a temperature near the bottom of the normal operating
range and one near the top.
2. Run at the lower temperature T1 &, note the error E1 between
CN9000A and "Reference" reading.
3. Repeat at upper temperature T2 and note error E2.
Example T1 reads T2 reads
CN9000A 60° 200°
"Reference" 58° 205°
Error E1=+2 E2=-5°
4. Calculate, span adjustment for Function .35
Temperature That CN9000A Reads
Temperature
That
‘Reference’
Reads
Negative
adjustment
Positive
adjustment
Ideal (i.e.
readings
match)