Ethylene Oxide Sensor (ETO Sensor) - ETO-B1

ETO-B1 Ethylene Oxide Sensor ETO Sensor PERFORMANCE

Sensitivity

nA/ppm in 20ppm EtO

2000 to 3200

Response time

t90 (s) from zero to 20ppm EtO

< 200

Zero current

ppm equivalent in zero air

< -0.6 to +0.75

Resolution

RMS noise (ppm equivalent)

< 0.1

Range

ppm EtO limit of performance warranty

100

Linearity

ppm error at full scale, linear at zero, 40ppm EtO

5 to 10

Overgas

limit maximum ppm for stable response to gas pulse

500

ETO-B1 Ethylene Oxide Sensor ETO Sensor LIFETIME

Zero drift

ppm equivalent change/year in lab air

nd

Sensitivity drift

% change/year in lab air, twice monthly test

nd

Operating life

months until 80% original signal (24 month warranted)

> 24

ETO-B1 Ethylene Oxide Sensor ETO Sensor ENVIRONMENTAL

Sensitivity @ -20°C

% (output @ -20°C/output @ 20°C) @ 40ppm EtO

30 to 50

Sensitivity @ 50°C

% (output @ 50°C/output @ 20°C) @ 40ppm EtO

115 to 145

Zero @ -20°C

ppm equivalent change from 20°C

<±0.5

Zero @ 50°C

ppm equivalent change from 20°C

< +2 to +5

ETO-B1 Ethylene Oxide Sensor ETO Sensor CROSS SENSITIVITY

H2S   sensitivity

% measured gas @ 20ppm H2S

< 200

NO2  sensitivity

% measured gas @ 10ppm NO2

< 35

Cl2    sensitivity

% measured gas @ 10ppm Cl2

< -3

NO    sensitivity

% measured gas @ 50ppm NO

< 80

SO2   sensitivity

% measured gas @ 20ppm SO2

< 40

CO    sensitivity

% measured gas @ 40ppm CO

< 25

H2     sensitivity

% measured gas @ 400ppm H2

< 0.5

C2H4 sensitivity

% measured gas @ 80ppm C2H4

< 100

NH3   sensitivity

% measured gas @ 25ppm NH3

< 0.1

HCHO sensitivity

% measured gas @ 4ppm HCHO

90

CO2   sensitivity

% measured gas @ 5% volume CO2

< 0.1

ETO-B1 Ethylene Oxide Sensor ETO Sensor KEY SPECIFICATIONS

Temperature range

°C

-30 to 50

Pressure range

kPa

80 to 120

Humidity range

% rh continuous

15 to 90

Storage period

months @ 3 to 20°C (stored in original container)

6

Load resistor

Ω(recommended)

10 to 33

Bias voltage

mV (working electrode potential is above reference electrode potential)

300

Weight

g

< 13