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Gas Leakage detector for A1 and A2L Refrigerants
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- No field calibration
- No cross sensitivity
- Long lifetime 15+ years
- Fail safe (built-in diagnostic)
- A1 gas concentration 400-2500ppm
- A2L gas concentration 5-100% LEL
- Built-in T and Rh compensation
- Immune to poisoning
- Operating range -40° to 70° C, 0-100% Rh
- Modbus, 2x Relays and 2x Analogue Output (ALL IN ONE)
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- HVAC Systems
- Refrigeration
- Cool Store
- Hotels ventilation system
- Home & Building automation
- Mobile HVAC units
- Railway conditioning
Description
MLD series are unique smart refrigerant or flammable gas detectors for A1 – A2L – A3 refrigerants used in HVAC-R applications as well as flammable gas leakages. MLD Series is robust, extremely poisonresistant, factory-calibrated, with more than 15 years of lifetime expected without any recalibration process needed.
For decades, Heating, Ventilation, Air-Conditioning, and Refrigeration (HVAC-R) technology has relied on the use of refrigerant gases to keep indoor air comfortable and food safe. Unfortunately, most of the refrigerants in use today have high Global Warming Potential (GWP), that is, a high potential to contribute to global warming. Since 2000, HVAC manufacturers have used hydrofluorocarbons (HFCs) extensively, however, they have a high GWP, often thousands of times higher than CO2, and contribute significantly to global warming. Currently the HVAC-R industry is transitioning from A1 refrigerants to A2L and A3 refrigerants, which are much better for the environment but require sensors to keep people and property safe.
The MLD series with NevadaNano’s Molecular Property Spectrometer™ (MPS™) Refrigerant Gas Sensors serves these fast-changing needs of the Heating, Ventilation, Air-Conditioning, and Refrigeration (HVAC-R) industries with precise and dependable detection of non-flammable (A1), mildly flammable (A2L), highly flammable (A3) refrigerants commonly used in HVAC applications.
Currently or detectors family consist of sensors for R410A, (A1 refrigerants), R32, R454 blends, R1234ze (A2L refrigerants) and R50, R170, R290, R600, R600a, R601, R1270 (A3), but check with GVZ Components for the latest list as we keep adding more refrigerants.
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A3, A2L, A1 Refrigerants
MLD Refrigerant Gas Detectors are engineered to provide precise and dependable detection of mildly flammable (A2L), highly flammable (A3), and non-flammable (A1) refrigerants commonly used in HVAC applications.
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Convenient Output Options
These sensors offer versatile output choices, such as a digital bus and configurable analog voltage output, ensuring a seamless and hassle-free integration process with your existing systems, catering to diverse requirements.
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Tailored to Your Needs
With a range of sensor variants available for R410A, (A1 refrigerants), R32, R454 blends, R1234ze (A2L refrigerants), R50, R170, R290, R600, R600a, R601, R1270 (A3), and more, you can select the sensor that perfectly aligns with your specific HVAC requirements.
Main Features
Our HVAC-R detectors employ smart sensor technology, ensuring consistent high performance and reliability.
Utilizing smart sensor technology, the HVAC-R sensors provide the following features critical to HVAC-R manufacturers and end users:
Gas Label
Indicates the gas target of a specific model
Led lights
They report the detector status by color and flashing codes.
- PWR - Power ON/OFF status
- AL1 - Alarm 1 threshold
- AL2/FLT - Alarm 2 threshold / fault
Nose
This is the place where the detector receives air from the surrounding enviroment. The sensor element is placed just below here.
Fixing holes
When coupled with its dedicated bracket, the MLD can be locked in place by matching the correspondend bracket hooks.
Cable
MLD comes with 1,5 or 3 meters cable, without
connector
Applications
- Residential Air Conditioning – all types
- Commercial Air Conditioning
- Industrial Air conditioning
- Data Center cooling
- Server farm cooling
- Hospitals and health care
- Educational Institutions
- Grocery / Food Retail
- Commericial and Residential Air Conditioning
- Offices
- Multi Residency Residential Units
- Care Homes
- Public Buildings
- Hotels
- Food Production and Processing
- Cold Storage
- Pharmaceutical Units
- Data Centers
- Process Cooling Supermarket Display Cases –
- Food Retail
- Vending Machines
Technical Features |
| SENSOR PERFORMANCES | ||
| Technology | MPS™ (Molecular Property Spectrometry™) by NevadaNano | |
| Gas detected | A1 R410A |
A2L R32, R454A/B/C, R1234ze |
| Measurament range | 1700-130.000ppm (static* condition) 5100-130.000 (dynamic condition) |
3-100% LEL |
| Response Time | <12 sec. | <12 sec. |
| Response Time (T90) | <20 sec. | <20 sec. (R32 - R454B - R454C) <30 sec. (R454A - R1234ze) |
| Resolution | 130ppm | 0,1% LEL |
| Lifetime | 15+ years | |
| List of Detectable gas Based on MPS sensor on board the MLD can detect the following gas with the range and accuracy as indicated below |
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| MLD Gas ref. code | Gas Type (Refrigerant Code) |
Measuring Range | Resolution | ACCURACY | |
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UL 60335-2-40 |
ISO 817 /ASHRAE 34 |
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| 03 | R32 (HFC) | 5-100% LEL | 0.1% LEL | ±2.5% LEL | ±3% LEL |
| 04 | R454B (HFO) | 9-100% LEL | 0.1% LEL | ±2.5% LEL | ±5% LEL |
| 05 | R454C (HFO) | 8-100% LEL | 0.1% LEL | ±2.5% LEL | ±5% LEL |
| 10 | R410A (HFC) |
1700-130000 ppm |
130 ppm | -- | ±11% reading |
| 12 | 1234ze (HFO) | 9-100% LEL | 0.1% LEL | ±2.5% LEL | ±3% LEL |
| 14 | R454A (HFO) | 5-100% LEL | 0.1% LEL | ±2.5% LEL | ±3% LEL |
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(**) Static conditions defined as temperature magnitude change rate < 3 °C/min. or relative humidity magnitude change rate < 3 %RH/min New gases are under continuous development and they will be added to new MLD versions. |
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| OPERATING FEATURES | |
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Signals Output |
Gas concentration, Status, Prealarm, Alarm, Fault, Lifetime, Pressure, Humidity, Temperature |
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Measurament Output |
Modbus | 4-20mA | 0,1-2,9V | 2x Relays |
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Visual Information |
3x LED (Status, Prealarm, Alarm/Fault) |
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Supply Voltage |
12-24VDC ±10% |
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Power Consumption |
Avg. 50mA |
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Operating Temperature |
-40° to +70°C (12VDC) | -40° to +60°C (24VDC) |
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Operating Humidity |
0 - 100% RH |
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Operating Pressure |
80 to 120 kPa |
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Protection grade |
IP65 |
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Dimensions MLD-S4 |
13 x 8 x 4,0 cm |
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Dimensions MLD-MN |
13 x 8 x 2,5 cm |
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Certifications & Approvals |
CE, EMC, Rohs, IEC60335-2-40, EN60079-0, EN60079-11, ATEX |
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Carbon Footprint: The CO2 equivalent emissions in the production of a single MLD device is 1,588 kg. The carbon footprint of the MLDs is calculated by using the cradle-to-gate LCA (Life Cycle Assessment) method. This means that the system boundary include all greenhouse gas emissions that occur from the input of raw materials (cradle) to the end of the product’s production (gate). |
- Filter by Refrigerant
- R1234ze
- R410A
- R32
- R454A
- R454B
- R454C
- Applications
- BrandsGVZ Custom Solutions
- TechnologyMPS™
- TypeDetector
