SMART3G-C3
with infrared sensor
SMART3G-C3 gas detector is designed to meet industrial requirements; the enclosure is explosion proof and can be installed in ATEX Zone 2 and, when equipped with dust adapter, in Zone 22.
The sensing element is placed in the stainless steel head with 47.5 mm diameter.
The infrared sensors employed for the flammable and refrigerant gas detection are poison free, with high accuracy and a long lifetime.
The gas detector has a 12-24 Vdc power supply and a standard 4-20 mA 3-wires output. Optionally, the SMART3G-C3 can be equipped with serial RS485 communication and a 1 or 3 relays board.
The enclosure has dimensions 106 x 160 x 62 mm, on the upper side there’s a M20 cable gland.
The gas detector is certification pending and it can be ATEX marked as follows:
0722 II 3G Ex db ec nC IIC T5 Gb
Or, when equipped with dust adapter:0722 II 3GD Ex db ec nC IIC T5 Gb
Ex tb IIIC T100°C Db
IP65
SMART3G-C3 is SIL2 hardware and SIL3 software; with a redundant system also the hardware is SIL3.
Sensor
| Application | Industrial area, ATEX Zone 2 e Zone 22 (when equipped with dust adapter, optional) |
| Sensing element | Infrared |
| Predicted sensor lifetime | >5 years |
| Gas detected | Flammable, refrigerant and CO2 |
| Full scale | 0 – 100% LFL flammable gas 0 – 2000 ppm refrigerant gas 0-2%Vol; 0-5%Vol; 0-30%Vol; 0-100%Vol CO |
Electrical data
| Power supply | 12-24 Vdc |
| Output | Analogue 4-20 mA output; 1 or 3 relay board (optional); serial RS485 output (optional) |
| Maximum dissipated power | 5.4 W |
| Relays contact ratings | 1.0 A at 24 Vdc (optional board) |
| Optical indications | – |
| Acoustic indications | – |
| Hall effect sensor | – |
Environmental conditions
| Storage temperature | -40 / +85°C |
| Operating temperature | -40 / +60°C |
| Operating humidity | 0 / 90% RH |
External case
| Material | Enclosure: Aluminium Sensor head: stainless steel |
| Protection mode | Ex e: Increased safety protection mode Ex nC: Enclosed equipment protection mode Ex d : Explosion proof enclosure Ex t : Equipment dust ignition protection by enclosure (when equipped with dust adapter, optional) |
| Dimensions | 106 x 160 x 62 mm |
| Weight | 1023 g |
| Cable entries | 1 x M20 |
| IP grade | IP55 (certification pending) |
Compliance
| EMC | EN 61000-6-3:2007 + A1:2011; EN 50270:2015 |
| ATEX (certification pending) | ATEX directive 2014/34/EU EN IEC 60079-0:2018 EN 60079-1:2014 EN 60079-7:2015 EN 60079-15:2010 EN 60079-31:2014 |
| SIL | EN 61508:2010 Parts 1, 2, 3, 4, 5, 6, 7 EN50402:2017 |
Product codes
| Flammable gas detectors 0-100% LFL, 12-24 Vdc | |
| S2623ME | Methane (0-100%LFL) gas detector |
| S2653BU | Butane (0-100%LFL) gas detector |
| S2653PR | Propane (0-100%LFL) gas detector |
| S2653GP | LPG (0-100%LFL) gas detector |
| S2653R454B | R454B (0-100%LFL) gas detector |
| S3424R32 | R32 (0-100%LFL) gas detector |
| S3428R1234YF | R1234YF (0-100%LFL) gas detector |
| S3432R1234ZE | R1234ZE (0-100%LFL) gas detector |
| Refrigerant gas detectors 0-2000 ppm, 12-24 Vdc | |
| S3942R32 | R32 (0 – 2000 ppm) gas detector |
| S3595R134A | R134A (0 – 2000 ppm) gas detector |
| S3598SF6 | SF6 (0 – 2000 ppm) gas detector |
| S3020R125 | R125 (0 – 2000 ppm) gas detector |
| S3021R1234YF | R1234YF (0 – 2000 ppm) gas detector |
| S3025R1234ZE | R1234ZE (0 – 2000 ppm) gas detector |
| S3022R404A | R404A (0 – 2000 ppm) gas detector |
| S3023R407A | R407A (0 – 2000 ppm) gas detector |
| S3918R407F | R407F (0 – 2000 ppm) gas detector |
| S3921R449A | R449A (0 – 2000 ppm) gas detector |
| S3024R507 | R507 (0 – 2000 ppm) gas detector |
| S3016R410A | R410A (0 – 2000 ppm) gas detector |
| S3950R417A | R417A (0 – 2000 ppm) gas detector |
| S3954R448 | R448 (0 – 2000 ppm) gas detector |
| S5066R513A | R513A (0 – 2000 ppm) gas detector |
| Carbon dioxide gas detectors, 12-24 Vdc | |
| S2649CO2 | CO2 (0-2% Vol )gas detector |
| S2650CO2 | CO2 (0-5% Vol) gas detector |
| S2444CO2 | CO2 (0-30% Vol) gas detector |
| S2444CO2 | CO2 (0-5000 ppm) gas detector |
| S2629CO2 | CO2 (0-100% Vol) gas detector |
Mechanical drawings
Sensitron srl works for a constant improvement of its products and reserves the right to change the technical data without notice. To have the updated product characteristics check on the website www.sensitron.it or write an e-mail to sales@sensitron.it
DS4747E R5 19/10/2022
Sensitron srl, Viale della Repubblica 48, Cornaredo (MI) – 20007
sales@sensitron.it
TEL. +39 0293548155 FAX. +39 0293548089
Documents / Resources
 | sensitron SMART3G-C3 with Infrared Sensor [pdf] User Manual SMART3G-C3 with Infrared Sensor, SMART3G-C3, with Infrared Sensor, Infrared Sensor, Sensor |