Smart Photoionization Detector Module PIDS3
User Manual
PIDS3 - User Manual (en) - 1.03.docx
Analytical Control Instruments GmbH, Volmerstraße 9A, 12489 Berlin, Germany, www.aci-berlin.com
Page 26 of 58
The dynamic resolution is a recommended rounding of measurement result depending on its value in
measurement range.
Measurement result
Isobutene
Rounded to resolution
in 0 … 2000 ppm range
Rounded to resolution
in 0 …
20 ppm range
Rounded to resolution
in 0 … 5000 ppm range
result < 1 ppm
0.010 ppm
0.00050 ppm
0.10 ppm
result < 2 ppm
0.010 ppm
0.00100 ppm
0.10 ppm
result < 5 ppm
0.010 ppm
0.00200 ppm
0.10 ppm
result < 10 ppm
0.050 ppm
0.00500 ppm
0.50 ppm
result < 20 ppm
0.100 ppm
0.01000 ppm
1.00 ppm
result < 50 ppm
0.500 ppm
0.02000 ppm
2.00 ppm
result < 120 ppm
1.000 ppm
out of range from here
2.00 ppm
result < 200 ppm
2.000 ppm
5.00 ppm
result < 500 ppm
5.000 ppm
5.00 ppm
result < 1000 ppm
10.000 ppm
10.00 ppm
result < 2500 ppm
20.000 ppm
20.00 ppm
result > 2500 ppm
out of range from here
50.00 ppm
The rounding is done on the Isobutene equivalent of measurement result.
The gas response factor of the measurement config is multiplied with the rounded value.
Example:
for 2 000 ppm range device with measurement result Isobutene equivalent of 0.05 ppm
=> with a gas response factor of 0.5 the result will be 0.025 ppm.