Sensitron SMART 3 Blizzard

The SMART 3 Blizzard is an advanced fixed gas detection solution engineered for precision monitoring of refrigerant gases in non-classified spaces such as machinery rooms, HVAC-R systems, and technical facilities. Featuring a high-performance infrared sensor and SIL2 certification, this detector delivers long-term accuracy and dependable leak detection for gases like R32, R410A and other common refrigerants. What sets it apart is the intuitive SENSE wireless interface, which enables remote configuration, diagnostics and calibration without interrupting operations. With customizable alarm settings, clear visual and audible alerts, multilingual support and downloadable reports, the SMART 3 Blizzard enhances safety, simplifies maintenance and supports compliance with industry standards.

What is it?
The SMART 3 Blizzard is a fixed refrigerant gas detector designed for continuous monitoring of refrigerant gas leaks. It uses advanced infrared sensor technology to deliver accurate, stable and long-term gas detection, making it a reliable safety device for professional HVAC-R and industrial applications.

Where is it used?
The SMART 3 Blizzard is used in non-classified areas such as machinery rooms, laboratories, technical rooms and HVAC-R installations. It is specifically intended for environments where refrigerant gases like R32, R410A, R134A and other modern refrigerants are present and must be monitored to meet safety and regulatory requirements.

How does it work?
The detector continuously samples the surrounding air using an infrared sensor that identifies refrigerant gas concentrations with high selectivity and accuracy. When gas levels exceed preset thresholds, the device activates visual LED indicators, an internal acoustic alarm and output signals, while configuration and calibration can be performed wirelessly via the SENSE interface.

What problems does it solve?
The SMART 3 Blizzard helps prevent safety risks caused by refrigerant gas leaks, such as health hazards, system failures and regulatory non-compliance. By providing early and reliable leak detection, it reduces downtime, simplifies maintenance and supports compliance with international refrigeration and F-Gas regulations.

General

• Product type: Fixed refrigerant gas detector

• Application areas: Machinery rooms, laboratories, HVAC-R systems, non-classified areas

• Sensing technology: Infrared (IR) sensor

• Sensor expected lifetime: ≥ 5 years

• Accuracy: ±5% of full scale

Gases Detected (depending on model)

• R32 (0–100% LFL)

• R454B (0–100% LFL)

• R410A (0–10,000 ppm)

• R1234YF (0–5,000 ppm)

• R1234ZE (0–5,000 ppm)

• R134A (0–5,000 ppm)

• R404A (0–5,000 ppm)

Electrical Specifications

• Power supply: 12–24 V DC

• Power consumption: < 3 W

• Outputs:

  • 2 relay outputs

  • 4–20 mA analog output

• Relay contact rating: 0.6 A @ 30 V DC

Visual & Acoustic Indicators

• Visual indication: 4 smart LEDs (status indication via illuminated ring)

• Acoustic alarm: Internal buzzer, 63 dB @ 1 m

Configuration & Maintenance

• Configuration & calibration: Wireless via SENSE interface

• Access devices: PC, tablet, or smartphone

Environmental Conditions

• Operating temperature: −10 °C to +50 °C

• Storage temperature: −40 °C to +85 °C

• Operating humidity: 0–95% RH, non-condensing

Mechanical Characteristics

• Housing material: Polycarbonate

• Dimensions:

  • Box: 120 × 120 × 52 mm

  • Cover: 130 × 130 × 22 mm

• Overall dimensions: 130 × 130 × 74 mm

• Weight: 450 g

• Cable entries:

  • 2 × M20 cable glands (standard)

  • Up to 6 × M16 cable glands (optional)

• Ingress protection: IP54

Compliance & Standards

• EMC: EN 61000-6-3, EN 50270

• Radio: EN 300 328

• Functional safety: SIL 2 (EN 61508 – in progress)

• Gas detection: EN 50402

• Refrigeration standards:

  • EN 378-3

  • ANSI/ASHRAE 15

  • CSA B52:2023

• Regulation: EU F-Gas Regulation 573/2024

smart3-blizzard-datasheet-sensitron-.pdf