TGS5141

Features

Figaro’s TGS5141 is a battery operable electrochemical sensor which uses a unique electrolyte that eliminates the need for a water reservoir. By eliminating the water reservoir used in TGS5042, the comparative size of TGS5141 is reduced to just 10% of TGS5042. With its ultra compact size, this sensor is the ideal choice for size oriented applications such as portable CO detectors, small residential CO detectors, and multi-sensor fire detectors. OEM customers will find individual sensors data printed on each sensor in bar code form, enabling users to skip the costly gas calibration process and allowing for individual sensor tracking.

The figure below represents typical sensitivity characteristics, all data having been gathered at standard test conditions (see reverse side of this sheet). The Y-axis shows theoutput current of the sensor (Iout/µA) in each gas. Output current is linear to CO concentration, with a deviation of less than ±5% in the range of 0~1000ppm.

The figure below represents typical temperature dependency characteristics. The Y-axis shows the sensor output ratio (I/Io) as defined below. The linear relationship between I/Io and CO concentration is constant regardless of the CO concentration range. I = Sensor output current in 400ppm of CO at various

temperatures

Io = Sensor output current in 400ppm at 20˚C/50%RH

Temperature Dependency: Sensitivity Characteristics:

CO H2 Ethanol CH4 Iso-butane

I/Io

Iout(µA)

Basic Measuring Circuit:

The diagram at the right shows the basic measuring circuit of TGS5141. The sensor generates a minute electric current which is converted into sensor output voltage (Vout) by an op-amp/resistor (R1) combination.

Figaro recommends the following electrical parts: R1 : 1MΩ

Vout

NOTE: When voltage is applied to the sensor output terminal, the sensor may be damaged. Voltage applied to the sensor should be strictly limited to less than ±10mV. An additional resistor or FET is required to prevent polarization of the sensor when Vc is off.

Counter

Basic measuring circuit of TGS5141

Specifications: Structure and Dimensions:

Item Specification

Model number TGS5141-P00

Target gases Carbon monoxide

Top View

Typical detection range 0 ~ 5,000ppm

Output current in CO 1.2~3.2nA/ppm

Baseline offset(*1) <±10ppm equivalent

Operating temperature -10˚C ~ +50˚C (continuous) -20˚C ~ +60˚C (intermittent)

Ni-plated SUS304

Side View

Operating humidity 10 ~ 95%RH (no condensation)

Response time (T90) within 60 seconds

Storage conditions -10˚C ~ +50˚C (continuous) -20˚C ~ +60˚C (intermittent)

Weight approx. 2.5g

Standard test conditions 20±2˚C, 40±10%RH

Counter electrode

(*1) Represents sensor output in air under operating conditions

Bottom View

Working electrode

Unit : mm