Supplement 1 for Operating Instructions C79000-G52xx-C216-03
6 A5E02769382-03, 03/2012
H
2
S sensor for measuring ranges from 5 to 50 vpm H
2
S
General information
Measured components Maximum of 4, comprising three infrared-sensitive gases, one oxygen and
one hydrogen sulfide
Measuring ranges
Smallest measuring range
Largest measuring range
0 ... 5 vpm
0 ... 50 vpm
Service life of the sensor Approx. 12 months
Permissible ambient pressure 750 ... 1 200 hPa
Permissible operating temperature 5 ... 40 °C (41 ... 104 °F)
Operation mode Continuous measurement between 0 and 12.5 vpm
Discontinuous measurement between 12.5 and 50 vpm
AUTOCAL Cyclic interval any 60 minutes using ambient air
Influencing variables
Accompanying gas The hydrogen sulfide sensor cannot be used if the accompanying gas contains
the following components:
- Chlorine-containing compounds
- Fluorinated compounds
- Heavy metals
- Aerosols
- Alkaline components (e.g. NH
3
>5 mg/m
3
)
Cross-inference (interfering gas) 1 360 vpm SO
2
result in a cross-interference of <20 vpm H
2
S
180 vpm NO result in a cross-interference of <150 vpm H
2
S
No cross-interference of CH
4
, CO
2
and H
2
(1000 vpm)
Drift < 1 % per month
Temperature < 3 % /10 K relative to full-scale value
Air pressure < 0.2 % of measured value per 1% pressure change
Measuring behavior
Display delay (T90 time) < 40 s with approx. 1-1.2 l/min sample gas flow
Output signal noise <2 % of smallest measuring range with a damping constant of 30 s
Display resolution 0,01 vpm H
2
S
Output signal resolution <1 % of smallest measuring range with a damping constant of 30 s
Reproducibility < 4 % of smallest measuring range
Note
Measuring ranges
The exact specification of the largest and smallest H
2
S ranges can be found on the label!
To Next Page
Loading...
