CH-A3 Flammable Gas Sensors - Alphasense - #1

All dimensions in millimetres (± 0.1mm)

PERFORMANCE Sensitivity

Response time Zero Range Linearity

mV / % methane

tgo from air to 50% LEL methane (s) mV in zero air % LEL methane

% methane when 5% non-linear

21 to 24 < 15 ±20

0 to 100 5.5

ENVIRONMENTAL Sensitivity @ -20C % sensitivity change, referenced to 20C

Sensitivity @ 503 % sensitivity change, referenced to 203

Zero @ -203 % LEL change, referenced to 20C

Zero @ 503 % LEL change, referenced to 20C

Temperature Range Certification to T5

104.5 to 106.5 101.5 to 102.5

< ±0.5

< -0.4 -40°to 50C

0.45

0.75 9

% LEL pentane / % LEL methane

% LEL acetylene / % LEL methane

hrs until 50% activity loss @ 10ppm HMDS

n-pentane acetylene HMDS

ELECTRICAL Voltage V (±0.1 V)

Power consumption mW

Voltage sensitivity % sensitivity change / 0.1V change

3.0 190

<2

NOTE: all sensors are tested at ambient environmental conditions, with methane, unless otherwise stated. As applications of use are outside our control, the Information provided is given without legal responsibility. Customers should test under their own conditions, to ensure that the sensors are suitable for their own requirements.