PRODUCT INFORMATION

EM5141A - Evaluation Module for TGS5141
Description:

The EM5141A evaluation module is designed
to perform the testing and evaluation of theelectrochemical carbon monoxide sensor TGS5141,
which features high selectivity to CO, high repeatability
and a long life. This module is useful for evaluating
basic performances of TGS5141 gas sensor, and asa reference of application circuit.

Features:* Converts sensor output current to voltage output* Module designed with electrical noise reduction
for stable operation* Anti-polarization circuit during power OFF period

Operation:

The TGS5141 CO sensor is placed into the sensor socket.
EM5141A goes into normal operation within one minute after firstbeing powered on. If CO gas is not present in ambient conditions,output voltage is 1.0V. If CO gas is present, the output current
generated from the TGS5141 sensor (*1) is converted into output
voltage. A linear relationship exists between output voltage andCO gas concentration. By measuring in advance the output
voltage in a known CO gas concentrations, CO gas concentration
can be calculated from the measured output voltage values (*2)(*3).
For more details of characteristics and performanceof TGS5141 sensor, refer to Technical Information
for TGS5141.
*2
The main function of this module is to simply convert
sensor output current into voltage output without
temperature compensation. For more information on atemperature compensation circuit, refer to Application*1

Notes for TGS5xxx or contact Figaro.
*3
A calibration curve is available upon request if
this module is ordered together with the sensor.
The calibration curve represents the relationshipbetween CO gas concentration and output voltage ofthe module with a particular sensor. The calibration
curve is provided for reference purposes only.

Dimensions:
42.0

M905S1

S1VR130.0

Gas sensor socket(TGS5141)CP3CP2CP6

JP2

1 2 3

CN1

15CP5

JP1CP1CP4CP7

1 2 3 4 5
2.50.64 3.3 1.6

u/m:mm3.0max1.6

8.0max

0.64* The sensor is to be put in the sensor
socket as shown in the above photo.
! The pin tip of the sensor is sharp. Be
careful to avoid injury when handling.
* Suggested female connectors mating
to the 5 pin connector (JST MB5P-90S):
JST XHP-5P or
JST 05JQ-BTPRODUCT INFORMATION

Schematic Diagram:
41IC13.0V

CP7-3+

R5C5R1S

Q2

2100kΩ

(200kΩ)

CP21u

DG1u

2.0V

D+

SG

R6
CE 0.47kΩ
WE S1R4

R10

R1410kΩ

R11CP6-100kΩ

R12IC2c+-10kΩ

IC2dR1310kΩ

+10kΩ

R15100kΩ

2MΩ

CP5GND

JP1100kΩ

160kΩ

R3200kΩR25.6VZD1a1u

4C41u

C3C21u5.6VC110u

ZD1bIC2b100Ω

C6MF-Q1

R163CP4R8560Ω

R9CP3VOUT

R74.7kΩJP2NC

1.85~3.30V

IC2aVR1SD1100k

CP12VIN

CN115Pin Connections:
Pin No.

Name

Description

1VIN

2NC

No connection

3VOUT

Output voltage

4MF

Self-diagnosis control input

5GND

GroundInput voltage

5.0±0.2V DC

Sensor output current Is (A) is calculated from output voltage VOUT (V) between
Pin #3 (VOUT) and Pin #5 (GND) using the following formula:		Is = (VOUT – 1.0) / (1.0 x 106)Specifications:
ItemSpecification

Product Name

Evaluation module for TGS5141

Model No.

EM5141A

Target gas

Carbon monoxide

Current consumption<0.5mA

Output voltage (VOUT)

1.00±0.05V DC in zero air
up to VIN-0.5V max in CO gas

Output amplification factor

1.0 x 106

Operating conditions

0~60˚C,<95%RH (no temp compensation)

NOTE1:
Maximum measurable concentration is about 1,500ppm when input supply voltage is 5V in std specifications. For higher concentrations,please contact Figaro Engineering Inc.
NOTE2:
Please contact Figaro Engineering Inc. for use of self-diagnosis control input Pin No. 4.
NOTE3:
Please do not touch or adjust VR1, JP1 and JP2. These items have been adjusted so that standard driving conditions are applied.
If changed, the sensor may be damaged.
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: 10/22