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17.00 EUR
NRF 38952 Switch
Operating voltage [V]: 24Colour: Green Thread Measurement: M10x1.25Hair/Class - Easy fit Air Conditioning: R 134 a
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NRF 38952 Switch: Precision Pressure Sensing for Automotive Climate Control
The NRF 38952 Switch is a high‑performance pressure sensor designed specifically for automotive air‑conditioning systems. It delivers reliable, repeatable pressure measurements that enable precise control of compressor operation, fan speed, and refrigerant flow in both passenger vehicles and commercial trucks.
Key Functional Characteristics
- Pressure Range: 0 kPa to 200 kPa (typical for automotive HVAC systems)
- Output Signal: 4–20 mA current loop, ensuring immunity to electrical noise over long cable runs
- Operating Temperature: –40 °C to +125 °C, suitable for harsh engine bay environments
- Mechanical Design: Compact housing with a sealed pressure port and integrated gasket (Dichtring) for leak‑free installation
- Response Time: < 50 ms, allowing real‑time feedback to the vehicle’s climate control ECU
- Durability: Rated for >10⁶ pressure cycles and resistant to oil, coolant, and refrigerant vapors
Applications Across Vehicle Platforms
The NRF 38952 Switch is engineered to fit a wide range of automotive platforms, notably:
- Renault Trucks Kerax Series: Models such as the Premium 2, DXi 7, DXi 11, and M10x1.25 male variants use this sensor for accurate compressor load sensing.
- Passenger cars equipped with advanced climate control modules that require precise pressure feedback to maintain cabin temperature stability.
- Commercial vans and light‑commercial vehicles where HVAC reliability directly impacts driver comfort and safety.
Installation Guidelines
- Mounting: Secure the sensor in a pressure port that is free from oil or coolant contamination. Use the provided gasket to ensure a hermetic seal.
- Cabling: Run the 4–20 mA loop cable along existing harnesses, avoiding sharp bends and high‑temperature zones.
- Calibration: Verify sensor output against a calibrated pressure gauge at both low and high operating pressures. Adjust ECU parameters if necessary to match manufacturer specifications.
- Testing: After installation, perform a functional test by cycling the HVAC system through all modes (cooling, heating, fan only) while monitoring the sensor signal on an oscilloscope or diagnostic tool.
Benefits for Vehicle Engineers and Technicians
- Enhanced Comfort: Accurate pressure sensing allows the HVAC control unit to modulate compressor activity, reducing temperature swings and improving cabin stability.
- Energy Efficiency: By preventing over‑compression or under‑compression, the sensor helps lower power consumption and extend battery life in electric or hybrid vehicles.
- Reliability: The robust construction and wide operating temperature range reduce failure rates, especially in heavy‑duty truck applications where maintenance intervals are critical.
- Diagnostic Support: The 4–20 mA output can be monitored by onboard diagnostics to flag pressure anomalies early, enabling proactive service actions.
Technical Data Sheet Highlights
| Parameter | Specification |
|---|---|
| Pressure Range | 0–200 kPa |
| Output Signal | 4–20 mA current loop |
| Operating Temperature | –40 °C to +125 °C |
| Response Time | <50 ms |
| Mechanical Housing | Sealed, gasketed port (Dichtring) |
| Lifetime Cycles | >10⁶ cycles |
| Compatibility | Renault Trucks Kerax series, passenger cars, commercial vans |
Conclusion
The NRF 38952 Switch stands out as a reliable, high‑precision pressure sensor tailored for automotive climate control systems. Its robust design, wide temperature tolerance, and fast response make it an ideal choice for both passenger vehicles and heavy‑duty trucks where HVAC performance is paramount. By integrating this switch into the vehicle’s HVAC architecture, engineers can achieve superior cabin comfort, energy efficiency, and system longevity.
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 23.94 EUR  24.19 EUR  23.12 EUR  14.29 EUR |
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| Brand |  NRF is a brand that specializes in creating and selling clothing and accessories for women. The brand is known for its contemporary and stylish designs, as well as its high-quality materials. NRF is a popular choice for women who want to look stylish and fashionable, without spending a lot of money. |
| Model | NRF 38952 |
| MPN | NRF 38952 |
| ID | 8290272 |
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| Key Features | |
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