PRODUCT INFORMATION

EM4260 - Evaluation Module for TGS4260
Description:

The EM4260 evaluation module is designed to performthe testing and evaluation of the potentiostatic electrolysistype oxygen sensor TGS4260. Output voltage (VOUT)
from the module corresponding to oxygen concentration
simplifies and facilitates evaluation of the characteristicsof the TGS4260 sensor.

Features:* Converts sensor output current to voltage output* Stable operation with noise control circuit* Compact design

Operation:

The output current generated from the TGS4260 sensor (*1)
corresponding to oxygen concentration is converted into outputvoltage. A linear relationship exists between output voltage andoxygen concentration within the range defined as the specifications.
By measuring in advance the output voltage in ambient air of 20.9
vol.% O2 or in a known oxygen concentration, oxygen concentration
can be calculated from the measured output voltage values. (*2)
*1 For more detailed of the specifications of TGS4260 sensor, refer
to Product Information for TGS4260.
*2 The main function of this module is to simply convert sensoroutput current into voltage output without temperature compensation.

Dimensions:Gas sensor socket(TGS4260)

44.0

VR1CP2CP3CN2SENSOR

C12JP131.0

CP1JP21CN1

センサソケット

CP4CN1 Pin Connections

CP5VR250.64
2.5

5 4 3 2 1

C11EM4260

1.67.0max4.9max

1.6

3.3 0.64

TGS4260

Pin #NameDescription

1VIN

2

VOUT

Input voltage

Output voltage

5.0±0.2V DC

3VREF

For monitoring reference potential

4V-RE

For monitoring RE potential

5GNDGround* TGS4260 sensor is to be put in the sensor socket as shown in the above photo. Alternatively, connect the cableharness connected to the sensor to CN2.
* Suggested female connectors mating to the 5-pin connector (JST MB5P-90S): JST XHP-5P or JST 05JQ-BT* Suggested female connector mating to the 4-pin connector (JST B4B-XH-A): JST XHP-4P

PRODUCT INFORMATION

J24JP2

R16AD8667

C43

R19R182

620

W

510k

U1b7AD8667

C4+3.1V

100

0.1u

+2.5V

+5V

5.1k

R11231k

V-RE

R1210kJP1GND

J131

VOUT

0.1u

RS11C23k

R101001U3U1a10kC5Sensor

CP2VR12232100u / 10V

LM4040B25IDBZ

C120.1u

U41LM4040B20IDBZ

R1620

C1LED1C11100u / 10V

3VREF CP1+2.5V

R21+5V+4.548V
R5+5V

C38.2M

0.1u

R15820k

0.1u

R141.1M

CN2CP4
R138CP3RE-bias

1Schematic Diagram:

1GND

2+5V

31.1k

1k

10k

VR2R2511k

AD86672k

ADR510ART

1332U52U6ADR510ART

R271.1k

VOUT
VREF
V-RE

52CN16R24
1U2aC6R230.1u

R22434+5V

8RE-bias

GND

5U2b

GND

7AD8667

GND

Specifications:Item

Specification

Product Name

Evaluation module for TGS4260

Model No.

EM4260Target gas

OxygenDetection range

0 ~ 25 vol.%Input voltage range(VIN)

5.0±0.2VDC

Current consumption≤ 2.0mA

Operating conditions-40~60˚C, ≤95%RH (no condensation)
For more details of operating conditions of the sensor, refer to Product Information for TGS4260.

Output voltage(VOUT)

In ambient air with 20.9 vol.% O2: 1.45V(typical)
In zero vol.% O2: 2.5+0/-0.02V(typical)* Under standard test conditions of 25˚C, 50%RH and 1013 hpa* Bias voltage application time: 2 hours or more

Output amplification factor

1.0x104

Bias voltage adjustment andJumper pin connections

Factory adjusted to -600mV with JP1 connected and JP2 open

Notes:
1. This module is designed for evaluation of the TGS4260 sensor only. Please do not use this module for any otherpurpose.
2. If excessive voltage or reverse voltage is applied to the module, the module or the sensor may be damaged.
3. Please do not touch or adjust VR1, VR2, JP1, and JP2. These items have been adjusted so that standard driving
conditions are applied to the sensor. If they are changed, the sensor may be damaged.
4. The input impedance of equipment connected to the CN1 should be 1MΩ or greater in order to ensure precise dataacquisition.
FIGARO ENGINEERING INC.
1-5-11 Senba-nishi
Mino, Osaka 562-8505 JAPAN
Phone: (81)-727-28-2045
URL：www.figaro.co.jp/en/

REV: 03/24