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  • All products
  • Refrigerants
  • SGD43S-M3-Sx

SGD43S-M3-S7

New

Flexible and complete refrigerant leakage detection system for modern refrigeration systems

The SGD43S-M3-S7 is part of our SGD4x series of A2L refrigerant detection products, specifically designed for the HVACR industry as a complete refrigerant detection system (RDS). It is based on the thermal conductivity measurement principle and features a dual contact relay output that can trigger a signal relay to start a blower, switch off the load or warn a control board. Easy integration and installer-friendly feedback is enabled by a status-indicating LED for quick visual feedback. 

 

With its fast response time and broad compatibility with A2L refrigerants thanks to its versatile multi-refrigerant calibration, it is an essential component for both residential and commercial HVACR systems. The SGD43S-M3-S7 ensures effective leak detection and complies with stringent industry standards, including UL 60335-2-40 and UL 60335-2-89. The single unit is triple calibrated for R-454A, R-454C and R-455A in refrigeration applications.

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Specification

Refrigerants
Monitored refrigerants
R-454A, R-454C, R-455A (triple calibration)
R-454A, R-454C, R-455A (triple calibration)
Connector
8-pin sealable connector
8-pin sealable connector
Accuracy at ambient conditions
±2.5
±2.5%LFL
Response time
30.0
30.0s
Expected lifetime
> 15
> 15years
Norm compliance
UL 60335-2-40 (4th editions)
UL 60335-2-40 (4th editions)
IP protection
IP54, if IP54 rated connector is used
IP54, if IP54 rated connector is used
Humidity
Operating relative humidity range
0 - 100
0 - 100%RH
Generic
Supply voltage
24
24V
Operating temperature range [°C]
-40 - 85
-40 - 85°C
Operating temperature range [°F]
-40 - 185
-40 - 185°F
Interfaces
ModBus, RS485
ModBus, RS485
Size (LxWxH)
90 x 55 x 24
90 x 55 x 24mm
Size (LxWxH) [inch]
3.54 x 2.17 x 0.94
3.54 x 2.17 x 0.94inch

Downloads

Design-in Guide SGD43S-M3-Sx

04/2025

File

404.0 KB

Guide04/2025PDF404.0 KB
Handling instructions SGD43S-M3-Sx

04/2025

File

453.2 KB

Guide04/2025PDF453.2 KB
Multi-Refrigerant Calibration SGD43S-M3-Sx

04/2025

File

181.2 KB

Guide04/2025PDF181.2 KB
Packing specifications SGD43S-M3-Sx

04/2025

File

214.7 KB

Guide04/2025PDF214.7 KB
Datasheet SGD43S-M3-Sx

03/2025

File

805.1 KB

Datasheet03/2025PDF805.1 KB
Starting Guide SGD43S-M3-Sx

01/2025

File

356.1 KB

Guide01/2025PDF356.1 KB
REACH-RoHS SGD43S-M3-Sx

01/2025

File

97.1 KB

Certificate01/2025PDF97.1 KB
Product flyer SGD43S-M3-Sx

02/2025

File

1.8 MB

Flyer02/2025PDF1.8 MB
Product flyer SGD43S-M3-Sx Japanese

04/2025

File

3.6 MB

Flyer04/2025PDF3.6 MB

Smart sensors for your application

Sensirion's sensor solutions are used in a wide range of applications and markets. Our reliable environmental and flow sensors improve energy efficiency, increase health and ensure safety and comfort.

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