Figaro TGS2610-C00 TGS 2610 Gas Sensor For LP Gases Alcohol, Methane, Propane, Iso-Butane (Ø x H) 9.2 mm x 7.8 mm TGS2610-C00 Scheda Tecnica

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TECHNICAL INFORMATION FOR TGS2610

4-1  Situations which must be avoided
1) Exposure to silicone vapors
If silicone vapors adsorb onto the sensor’s surface,
the sensing material will be coated, irreversibly
inhibiting sensitivity.  Avoid exposure where silicone
adhesives, hair grooming materials, or silicone
rubber/putty may be present.

2) Highly corrosive environment
High density exposure to corrosive materials such
as H

2

S, SOx, Cl

2

, HCl, etc. for extended periods may

cause corrosion or breakage of the lead wires or
heater material.

3) Contamination by alkaline metals
Sensor drift may occur when the sensor is
contaminated by alkaline metals, especially salt water
spray.

4) Contact with water
Sensor drift may occur due to soaking or splashing
the sensor with water.

5) Freezing
If water freezes on the sensing surface, the sensing
material would crack, altering characteristics.

6) Application of excessive voltage
If higher than specified voltage is applied to the
sensor or the heater, lead wires and/or the heater
may be damaged or sensor characteristics may
drift, even if no physical damage or breakage
occurs.

7) Operation in zero/low oxygen environment
TGS sensors require the presence of around 21%
(ambient) oxygen in their operating environment in
order to function properly and to exhibit
characteristics described in Figaro’s product
literature. TGS sensors cannot properly operate in a
zero or low oxygen content atmosphere.

4-2  Situations to be avoided whenever possible
1) Water condensation
Light condensation under conditions of indoor usage
should not pose a problem for sensor performance.

However, if water condenses on the sensor’s surface
and remains for an extended period, sensor
characteristics may drift.

2) Usage in high density of gas
Sensor performance may be affected if exposed to a
high density of gas for a long period of time,
regardless of the powering condition.

3) Storage for extended periods
When stored without powering for a long period, the
sensor may show a reversible drift in resistance
according to the environment in which it was stored.
The sensor should be stored in a sealed bag
containing clean air;  do not use silica gel.  Note that
as unpowered storage becomes longer, a longer preheating
period is required to stabilize the sensor before usage.

4) Long term exposure in adverse environment
Regardless of powering condition, if the sensor is
exposed in extreme conditions such as very high
humidity, extreme temperatures, or high
contamination levels for a long period of time, sensor
performance will be adversely affected.

5) Vibration
Excessive vibration may cause the sensor or lead
wires to resonate and break.  Usage of compressed
air drivers/ultrasonic welders on assembly lines may
generate such vibration, so please check this matter.

6) Shock
Breakage of lead wires may occur if the sensor is
subjected to a strong shock.

7) Soldering
Ideally, sensors should be soldered manually.
However, wave soldering can be done under the
following conditions:

    a) Suggested flux: rosin flux with minimal chlorine

±

±

Results of wave soldering cannot be guaranteed if con-
ducted outside the above guidelines since some flux
vapors may cause drift in sensor performance similar
to the effects of silicone vapors.