Stationary Photoionization Detector SPID2
User Manual
SPID2 - User Manual (en) - 1.11.docx
Analytical Control Instruments GmbH, Volmerstraße 9A, D-12489 BERLIN, Germany, www.aci-berlin.de
Version 1.11
Page 36 of 60
6.7.
Measurement Ranges
The device supports the following measurement ranges:
Low Range
(optional)
Standard range
High range
(optional)
Signal range
(Isobutene equivalent)
0
…
20 ppm
0
…
100 ppm
0
…
2000 ppm
Resolution
0.01 ppm
0.1 ppm
1 ppm
Recommended
SPAN Gas for calibration
20 ppm
Isobutene
100 ppm
Isobutene
2000 ppm
Isobutene
Recommended
ZERO Gas for calibration
Synthetic Air
Synthetic Air
Synthetic Air
Over range
24 ppm
Isobutene
120 ppm
Isobutene
2100 ppm
Isobutene
6.8.
Resolution of Measurement Result
The representation of the measurement result depends on the selected detection range:
Low range
Resolution 0.01 ppm
Standard range
Resolution 0.1 ppm
High range
Resolution 1 ppm
According to the value of the measurement result, the display value is rounded:
Measurement result
Rounded to resolution
result < 5 ppm
0.01 ppm
result < 10 ppm
0.05 ppm
result < 20 ppm
0.10 ppm
result < 50 ppm
0.50 ppm
result < 120 ppm
1.00 ppm
result < 200 ppm
2.00 ppm
result < 500 ppm
5.00 ppm
result < 1000 ppm
10.00 ppm
