Datasheet

ManualsBrandsFIGARO ManualsSensorsTGS-2600 Gas Sensor For Air Quality Various gases, air pollution (Ø x H) 9.2 mm x 7.8 mm

Revised 08/04

TECHNICAL INFORMATION FOR TGS2600

Technical Information for Air Quality Control Sensors

The Figaro 2600 series is a new

type thick film metal oxide

semiconductor, screen printed

gas sensor which offers

miniaturization and lower power

consumption. The TGS2600

displays high selectivity and

sensitivity to low concentrations

of various air contaminants such

as those found in cigarette smoke.

Page

Specifications

Features..........................................................................2

Applications...................................................................2

Structure..........................................................................2

Basic measuring circuit....................................................2

Circuit & operating conditions.........................................3

Specifications..............................................................................3

Dimensions...............................................................................3

Basic Sensitivity Characteristics

Sensitivity to various gases................................................4

Temperature and humidity dependency..........................5-6

Heater voltage dependency.............................................6

Gas response....................................................................................7

Initial action........................................................................8

Long term characteristics............................................................8-9

See also Technical Brochure ‘Technical Information on Usage of TGS

Sensors for Toxic and Explosive Gas Leak Detectors’.

an ISO9001 company

IMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY

WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLY RECOMMENDS

CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION

AND, IN PARTICULAR, WHEN CUSTOMER’S TARGET GASES ARE NOT LISTED HEREIN. FIGARO

CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR

APPLICATION FOR WHICH SENSOR HAS NOT BEEN SPECIFICALLY TESTED BY FIGARO.

Summary of content (9 pages)

PAGE 1
an ISO9001 company TECHNICAL INFORMATION FOR TGS2600 Technical Information for Air Quality Control Sensors The Figaro 2600 series is a new type thick film metal oxide semiconductor, screen printed gas sensor which offers miniaturization and lower power consumption. The TGS2600 displays high selectivity and sensitivity to low concentrations of various air contaminants such as those found in cigarette smoke. Page Specifications Features......................................................................
PAGE 2
TECHNICAL INFORMATION FOR TGS2600 1. Specifications Pin holes 1-1 Features Sensor element * * * * High selectivity to low gas concentrations Low power consumption Small size Long life 1.5mm Substrate Sensing material 1.5mm Electrodes 1-2 Applications * Air cleaners for indoor air cleaners * Air cleaners for vehicles * Air quality monitors 1-3 Structure Lead wire Lead wire Metal cap Heater (Reverse side) Lead pin Fig. 1 - Sensor structure Figure 1 shows the structure of TGS2600.
PAGE 3
TECHNICAL INFORMATION FOR TGS2600 1-5 Circuit & operating conditions 1-7 Dimensions The ratings shown below should be maintained at all times to insure stable sensor performance: Item 0.9 0.9 Specification 1.6 Top view Circuit voltage (Vc) 5.0V ± 0.2V DC Heater voltage (VH) 5.0V ± 0.2V DC/AC Heater resistance (room temp.) Load resistance (RL) Sensor power dissipation (Ps) 1.6 ø9.2±0.2 83Ω at room temp. (typical) Sensing element Variable (0.45kΩ min.
PAGE 4
TECHNICAL INFORMATION FOR TGS2600 2. Basic Sensitivity Characteristics 10 2-1 Sensitivity to various gases Figure 5 shows the relative sensitivity of TGS2600 to various gases in cigarette smoke. The Y-axis shows the ratio of the sensor resistance in cigarette smoke (Rs) to the sensor resistance in clean air (Ro) taken at standard test conditions of 20˚C/65%RH. This data was taken in a 20m3 room with cigarettes placed on a flat surface. The burning time for one cigarette was approximately 8 minutes.
PAGE 5
TECHNICAL INFORMATION FOR TGS2600 2-2 Temperature and humidity dependency 10 40% 65% 85% 100% Figure 6 shows the temperature and humidity dependency of TGS2600 in clean air. The Y-axis shows the ratio of sensor resistance in clean air under various atmospheric conditions (Rs) to the sensor resistance in clean air at 20˚C/65%RH (Ro). R.H. (˚C) 40%R.H. 65%R.H. 85%R.H. Rs/Ro RH%: 1 100%R.H. Gas: air -10 2.35 0 1.60 0.1 10 1.61 1.42 1.25 20 1.30 1.00 .93 30 .99 .80 .70 40 .78 .61 .
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TECHNICAL INFORMATION FOR TGS2600 1 40% 65% 85% 100% RH%: Rs/Ro Figure 8 shows the temperature and humidity dependency of TGS2600 in ethanol (used as a representative gas for VOCs to which the sensor is likely to respond). The Y-axis shows the ratio of sensor resistance in 30ppm of ethanol under various atmospheric conditions (Rs) to the sensor resistance in clean air under the same atmospheric conditions (Ro).
PAGE 7
TECHNICAL INFORMATION FOR TGS2600 2-4 Gas response Rs/Ro Figure 11 shows the response pattern of the sensor when inserted into and later removed from 10ppm of hydrogen after a 3 minute period. The Y-axis shows the ratio of sensor resistance over time (Rs) compared with sensor resistance in clean air just prior to insertion into hydrogen (Ro). 10 Figure 12 shows the response pattern of the sensor when inserted into and later removed from 30ppm of ethanol after a 3 minute period.
PAGE 8
TECHNICAL INFORMATION FOR TGS2600 2-5 Initial action 1 Rs/Ro Figure 14 shows the initial action of the sensor resistance (Rs) for a sensor which is stored unenergized in normal air for 30 days and then energized in clean air. The Y-axis represents sensor resistance in clean air at various times after energizing (Rs) compared with sensor resistance 20 min. after energizing (Ro). 10 0.
PAGE 9
TECHNICAL INFORMATION FOR TGS2600 100 Rs (kΩ) In Figures 17 & 18, the sensor is left unenergized in normal air for the entire test period except for the measurement period. Measurement for confirming sensor characteristics is conducted under standard test conditions. Figure 17 depicts sensor resistance in clean air over the test period, while in Figure 18 the Y-axis shows the ratio of sensor resistance in gases (Rs) compared with sensor resistance in fresh air on the same day (Ro).