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"7 Calibration (Parameter Correction)"
(Do Not Modify This Parameter)
Carry out correction of range, sound velocity, current output and reference level.
1.
Range Adjust (Range correction):
after input of the actual value, the Sys-
tem will correct the range automatically. Factory default is the measured value.
2.
Sound Adjust (Sound velocity correction):
after input of the actual value,
the system will correct the sound velocity automatically, applied when gas com-
position is not air. For example, propagation velocity of sound is different in pla-
ces with gasoline, acetone, ethyl alcohol and other volatile gas, so correction is
necessary.
3.
4mA Adjust (4mA correction):
keep modifying the value until the actual out-
put current reaches 4mA. Factory default is 3100.
When multimeter is connected to 4-20ma positive pole in series, this number shall
be increased or decreased by 1 so that 4mA correction can be realized.
4.
20mA Adjust (20mA correction):
keep modifying the value until the actual
output current reaches 20mA. Factory default is 7200.
5.
Voltage (Reference level):
input the measured voltage at relevant test point.
Factory default is 5.00.
Summary of Contents for LUDP
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