Ion Science Hydrosteel 6000 - Manual (Page 36)

Hydrosteel 6000 MANUAL Ion Science Ltd
Page 36 of 39
Unrivalled Detection. www.ionscience.com
Appendix A
Analyser specification
Notes: Volumetric specifications are quoted at 20 °C and one atmosphere ambient pressure.
Pre-set input flow, deploying 27-inch (70 cm) gas sampling conduit and LT-R collector unless
otherwise specified.
1 pl = 10
-12
litres
Full range: 0-2500 pl/cm
2
/s.
Resolution: < 2 pl/cm
2
/s hydrogen emanating from steel
Linearity: Linear over full range
Reproducibility: 5% or 1 pl/cm
2
/s, whichever is greater.
Rate of response:
%FSD 1% 50% 90%
27-inch (70 cm) conduit 8 s 24 s 42 s
78-inch (200 cm) conduit 17 s 36 s 55 s
Cross sensitivity (versus hydrogen = 100%):
CO <1%; H
2
S <20%; NO, <30%; C
2
H
4
, 80%
Relative response (versus100 ppm @ 20 °C = 1.00):
30 °C = 1.03; 40 °C =1.11; 50 °C =1.21
Pre-set input flow rate: 30 ±1 ml/min
Background signal drift: <50 pl/cm
2
/s equivalent per year,
<1 pl/cm
2
/s per hr.
< 0.5 pl/cm
2
/s per °C
Operating lifetime: sensor, 1 year pump, >1500 hr