PRODUCT INFORMATION

CGM6812-B00 - Pre-calibrated module for combustible gas
Features:Applications:* Linear analog output proportional to gas
concentration* Maintenance free
* Compact size
* Meets RoHS requirements* Gas leak detection in fuel cell systems* Hydrogen & combustible gas leakdetectors* Safety measures for lithium-ion batteries

The CGM6812-B00* combustible gas sensor module is a new unit which
utilizes TGS6812, Figaro's catalytic pellistor type gas sensor which features
durability and stability. This module provides analog output voltage proportionalto hydrogen gas concentration. CGM6812-B00 has conformal coatings formoisture-proofing and electrical insulation purposes, and is also capableof detecting sensor wire breakage. The unit has a wide range of operating
temperature from -10˚ to +60˚C.
Because the TGS6812 sensor can detect methane and LP gas as well ashydrogen, this module is suitable for gas leak detection in stationary fuel cells
which use hydrogen generated from combustible gases.
* CGM (Combustible Gas sensor Module)

The figure below represents typical sensitivity characteristics,
all data having been gathered at standard test conditions (seereverse side of this sheet). The Y-axis is indicated as output
voltage.
Sensitivity Characteristics:
543Vconc (V)NameDescription

1GND

Common ground2NC

Any connection prohibited3NC

Any connection prohibited

4VCONC

Concentration output voltage

5VIN

Input voltage

CGM6812-B00 Pin Connections(Connector model BH05B-XMSK)Recommended receptacle for connector: XMP-05VHydrogen
MethanePropaneIso-butane

2Pin No.

1050001000015000

Gas concentration (ppm)
IMPORTANT NOTE: OPERATING CONDITIONS IN WHICH FIGARO SENSORS ARE USED WILL VARY WITH EACH CUSTOMER’S SPECIFIC APPLICATIONS. FIGARO STRONGLYRECOMMENDS CONSULTING OUR TECHNICAL STAFF BEFORE DEPLOYING FIGARO SENSORS IN YOUR APPLICATION AND, IN PARTICULAR, WHEN CUSTOMER’S TARGETGASES ARE NOT LISTED HEREIN. FIGARO CANNOT ASSUME ANY RESPONSIBILITY FOR ANY USE OF ITS SENSORS IN A PRODUCT OR APPLICATION FOR WHICH SENSOR HASNOT BEEN SPECIFICALLY TESTED BY FIGARO.

PRODUCT INFORMATIONSpecifications:Structure and Dimensions:Product nameCombustible gas sensor module

Model No.

CGM6812-B00

Gas sensor

TGS6812 (catalytic type)

Detection range

0 ~ 14,000ppm H2(also can detect methane, iso-butane, and propane)

50±0.341.5±0.3
33±0.3
21.4
12.9

4.25
8.5

1~4.5V DC typical (up to max VIN)

Ambient conditions

Hydrogen in air at 20˚±2˚C,
65±5%RH

Circuit conditions

5.0±0.2V DC

Preheating period prior
to test≥2 weeks (recommendation)

Response time (T90)
to 4000ppm H2≤30 seconds

Warm-up timeSee 2-3 of APPLICATION NOTES FOR TGS68-SERIESSENSORS.

Operating conditions-10˚~+60˚C, 20~95%RH (avoid condensation)

Storage conditions-10˚~+60˚C, 20~95%RH (avoid condensation)

Input voltage (VIN)

5.0±0.2V DCPower consumption≤1.5W

Dimensions

50 x 30 x 25.3mm

Weight15g or lessPosition dependency

Since the module has position dependency, it should be
mounted so the two lug-holes are in a horizontal position

30±0.3A'

5 4 3 2 1

ø12(1.0)

A-A'

1.9±0.1

3.0±0.2V

(0.9)
(1.0)

1.0±0.2V

15±0.2
7.5Vconc in air
Vconc in 8000ppm H2A19.9

Vconc=0~0.1V(*)

1.9±0.1

Standard test conditions

Trouble2-φ4.5±0.1

14.5±0.25(Std. test conditions)

H2 conc(ppm)=(Vconc-1.0) x 4000

25.3±0.6

Factory setting output

Conversion to H2concentration

19.5±0.5

Output voltage (Vconc)(Std. test conditions)

u/m: mm(*) recommended threshold for trouble detection = 0.2V

The upper opening in the cap of the sensor used in thismodule (TGS6812) is covered with a double layer of 100 meshstainless steel gauze (SUS316). Independent tests confirm
that this protective cover will prevent the heated sensor
elements inside the cap from igniting an explosive mixture of
6.5±0.5% ethylene and air.

All sensor characteristics shown in this brochurerepresent typical characteristics. Actual
characteristics vary from sensor to sensor. The
only characteristics warranted are those in theSpecification table above.

REV: 08/24

Before purchasing this product,
please read the Warranty Statements
shown in our webpage by scanning
this QR code.
https://www.figaro.co.jp/en/pdf/Limited_Warranty_en.pdf

FIGARO ENGINEERING INC.
1-5-11 Senba-nishi
Mino, Osaka 562-8505 JAPAN
Phone: (81)-727-28-2045
URL：www.figaro.co.jp/en/