© SGX Sensortech 2012-2020 DS-0322 SGX-4H2S-300, Issue 1, 26-Mar-2020, Page 1/3
SGX Europe Sp. Z o.o.
Building 11
Ligocka St. 103,
40-568 Katowice,
Poland
T: +48 (0) 32 438 4778
E: sales.is@sgxsensortech.com
www.sgxsensortech.com
SGX-4H2S-300 Datasheet
Industrial Hydrogen Sulphide (H
2
S) Sensor
OUTLINE
All dimensions are in mm
All tolerances are ±0.15mm
PERFORMANCE
Output signal
700 ± 250 nA / ppm
Typical Baseline Range
(pure air)
±2ppm H
2
S equivalent
T90 Response Time
< 30 seconds
Measurement Range
0 - 300 ppm
Maximum Overload
500 ppm
Linearity
Linear
Repeatability
< ±2% H
2
S equivalent
Recommended Load
Resistor
10 ohms
Resolution (Electronics
dependent)
<0.1 ppm typical
OPERATING CONDITIONS
Temperature Range
-30°C to +50°C
Pressure Range
800 to 1200 mbar
Operating Humidity
Range
15% to 90% RH
LIFETIME INTRINSIC SAFETY DATA
Long Term Output Drift
< 15% per annum
Max at 2000ppm
0.3 mA
Recommended Storage
Temp
0°C to 20°C
Max o/c Voltage
1.3 V
Expected Operating Life
> 24 months in air
Max s/c Current
<1.0 A
© SGX Sensortech 2012-2020 DS-0322 SGX-4H2S-300, Issue 1, 26-Mar-2020, Page 2/3
SGX Europe Sp. Z o.o.
Building 11
Ligocka St. 103,
40-568 Katowice,
Poland
T: +48 (0) 32 438 4778
E: sales.is@sgxsensortech.com
www.sgxsensortech.com
CROSS – SENSITIVITY DATA
GAS
CONCENTRATION
SGX-4H2S-300
Carbon Monoxide
100ppm
< 2ppm
Sulphur Dioxide
20ppm
0ppm
Nitrogen Dioxide
5ppm
< 0.5ppm
Nitric Oxide
50ppm
<0.5ppm
Ammonia
50ppm
0ppm
Chlorine
15ppm
0ppm
Ethylene
100ppm
0ppm
Carbon Dioxide
5000ppm
0ppm
* See Important Notes
Output vs Temp
© SGX Sensortech 2012-2020 DS-0322 SGX-4H2S-300, Issue 1, 26-Mar-2020, Page 3/3
SGX Europe Sp. Z o.o.
Building 11
Ligocka St. 103,
40-568 Katowice,
Poland
T: +48 (0) 32 438 4778
E: sales.is@sgxsensortech.com
www.sgxsensortech.com
IMPORTANT NOTES
1) Do not glue or solder to the connector pins as this may damage the sensor and thereby
invalidate the warranty, please use PSB sockets.
2) Details on recommended connector pins can be found in the Frequently Asked Questions
within the Gas Sensor section of the SGX website.
3) All performance specifications are based upon the following environmental conditions:
20°C, 50% relative humidity, 101kPa.
4) Cross Sensitivity Data is for information only. Calibration is recommended with target gas
as the accuracy of calibration and measurement cannot be ensured.
5) The cross sensitivities are including but not limited to the gases stated in the table. It may
respond to other gases.
6) The cross sensitivities may fluctuate between ± 30% and may differ from batch to batch or
across sensor’s life time.
7) The device is designed to be RoHS compliant.
8) Poisoning - sensors are designed to operate in a wide range of harsh environments and
conditions. However, it is important that exposure to high concentrations of solvent vapours
is avoided, both during storage, fitting into instrument and operation.
9) When using sensors on printed circuit boards (PCB’s), degreasing agents should be used
prior to the sensor being fitted.
Warning:
By the nature of the technology used, any electrochemical gas sensor offered by SGX Europe Sp. z o.o. can potentially fail to meet specification
without warning. SGX Europe Sp. z o.o. makes every effort to ensure the reliability of our products of this type, where life safety is a performance
requirement of the product, we recommend that all sensors and instruments using these sensors are checked for response to gas before use.
SGX Europe Sp. z o.o reserves the right to make product changes without notice. No liability is accepted for any consequential losses, injury or
damage resulting from the use of this document or from any omissions or errors herein. The data is given for guidance only. It does not constitute
a specification or an offer for sale. The products are always subject to a program of improvement and testing which may result in some changes
in the characteristics quoted. As the products may be used by the client in circumstances beyond the knowledge and control of SGX Europe Sp.
z o.o, we cannot give any warranty as to the relevance of these particulars to an application. It is the clients’ responsibility to carry out the necessary
tests to determine the usefulness of the products and to ensure their safety of operation in a particular application. Performance characteristics
on this data sheet outline the performance of newly supplied sensors. Output signal can drift below the lower limit over.
