Zhengzhou Winsen Electronics Technology Co., Ltd

www.winsen-sensor.com

Tel: 86-371-67169097/67169670

Fax: 86-371-60932988

Email: sales@winsensor.com

Leading gas sensing solutions supplier in China!

2 .Following conditions should be avoided

2.1 Water Condensation

Indoor conditions, slight water condensation will influence sensors’ performance lightly. However, if water

condensation on sensors surface and keep a certain period, sensors’ sensitive will be decreased.

2.2 Used in high gas concentration

No matter the sensor is electrified or not, if it is placed in high gas concentration for long time, sensors

characteristic will be affected. If lighter gas sprays the sensor, it will cause extremely damage.

2.3 Long time storage

The sensors resistance will drift reversibly if it’s stored for long time without electrify, this drift is related with

storage conditions. Sensors should be stored in airproof bag without volatile silicon compound. For the

sensors with long time storage but no electrify, they need long galvanical aging time for stability before using.

The suggested aging time as follow:

Stable2.

Storage Time

Suggested aging time

Less than one month

No less than 48 hours

1 ~ 6 months

No less than 72 hours

More than six months

No less than 168 hours

2.4 Long time exposed to adverse environment

No matter the sensors electrified or not, if exposed to adverse environment for long time, such as high

humidity, high temperature, or high pollution etc., it will influence the sensors’ performance badly.

2.5 Vibration

Continual vibration will result in sensors down-lead response then break. In transportation or assembling line,

pneumatic screwdriver/ultrasonic welding machine can lead this vibration.

2.6 Concussion

If sensors meet strong concussion, it may lead its lead wire disconnected.

2.7 Usage Conditions

2.7.1For sensor, handmade welding is optimal way. The welding conditions as follow:

 Soldering flux: Rosin soldering flux contains least chlorine

 homothermal soldering iron

 Temperature： 250℃

 Time：less than 3 seconds

2.7.2If users choose wave-soldering, the following conditions should be obey:

 Soldering flux: Rosin soldering flux contains least chlorine

 Speed: 1-2 Meter/ Minute

 Warm-up temperature：100±20℃

 Welding temperature：250±10℃

 One time pass wave crest welding machine

If disobey the above using terms, sensors sensitivity will reduce.

Zhengzhou Winsen Electronics Technology Co., Ltd

Add: No.299, Jinsuo Road, National Hi-Tech Zone, Zhengzhou 450001 China

Tel: +86-371-67169097 / 67169670 Fax: +86-371-60932988

E-mail: sales@winsensor.com Website: www.winsen-sensor.com