Ventis MX4 - Sensor Specifications and Cross-Sensitivity

Ventis™ MX4 Product Manual
47 © 2014 Industrial Scientific Corporation
STORAGE CONDITIONS
Temperature range 0−25 ºC (32−77 ºF)
Humidity range 40–70% relative humidity (RH) noncondensing
Pressure range 0.9–1.1 atm
Maximum time Up to 6 months
Note: Industrial Scientific recommends that infrequently used lithium-ion batteries be
fully charged every four months.
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SENSOR SPECIFICATIONS
Gas Name Abbr. Measuring
Range
Resolution
A
ccuracy at Time and
Temperature of
Calibration*
Response
Time
(typical)
T50
Response
Time
(typical)
T90
Oxygen O
2
0–30% vol 0.1% vol ± 0.5% 15 30
Carbon Monoxide
with low H
2
interference
CO/H
2
Low
0–1000 ppm 1 ppm ± 5% (0-300 ppm)
± 15% (301-1000 ppm)
8 17
Carbon Monoxide CO 0–1000 ppm 1 ppm ± 5% 15 50
Hydrogen Sulfide H
2
S 0–500 ppm 0.1 ppm ± 5% 15 30
Nitrogen Dioxide NO
2
0–150 ppm 0.1 ppm ± 10% 10 30
Sulfur Dioxide SO
2
0–150 ppm 0.1 ppm ± 10% 20 80
Combustible LEL 0–100% LEL 1% LEL ± 5% 15 35
Methane CH
4
0–5% vol 0.01% vol ± 5% 15 35
*The accuracy specification for each sensor is ± the stated percentage or 1 unit of resolution, whichever is greater.
TOXIC GAS SENSOR CROSS-SENSITIVITY TABLE
Target Gas Sensor
CO
CO
(H2
Low)
H2S SO2 NO2 Cl2 ClO2 HCN HCl PH3 NO H2 NH3
CO 100 100 1 1 0 0 0 0 0 0 0 20 0
H2S 5 5 100 1 -40 -3 -25 10 300 25 10 20 25
SO2 0 5 5 100 0 0 0 — 40 — 0 0 -40
NO2 -5 5 -25 -165 100 45 — -70 — — 30 0 -10
Cl2 -10 0 -20 -25 10 100 60 -20 6 -20 0 0 -50
ClO2 — — — — — 20 100 — — — — — —
HCN 15 — 10 50 1 0 0 100 35 1 0 30 5
HCl 3 — 0 5 0 2 0 0 100 0 15 0 0
PH3 — — — — — — -100 425 300 100 — — —
NO 25 40 1 1 5 — — -5 — — 100 30 0
H2 22 3 0.3 0.5 0 0 0 0 0 0 0 100 0
NH3 0 0 0 0 0 0 0 0 0 0 0 0 100