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Danfoss AKS 38 Float Switch – Liquid Level Control
The Danfoss AKS 38 Float Switch is a robust liquid level switch designed for the control and detection of refrigerant liquid levels in industrial refrigeration systems.
With multiple connection configurations, adjustable switching differential and a rugged design for demanding refrigeration applications, AKS 38 provides reliable level control for receivers, surge drums, accumulators, chillers and other industrial refrigeration vessels.
AKS 38 Liquid Level Control 28 Bar MWP IP65 Industrial Refrigeration💧 Reliable Refrigerant Liquid Level Control
Maintaining the correct liquid refrigerant level is important for stable and safe operation of an industrial refrigeration system.
The Danfoss AKS 38 uses a mechanical float mechanism to detect changes in liquid level and operate an electrical switch. It can therefore be used for liquid-level control, level detection and high/low level safety functions.
Instead of relying only on electronic measurement, AKS 38 provides a robust mechanical float-switch solution designed specifically for demanding industrial refrigeration applications. It can be applied both for normal level control and as a high- or low-level safety switch to help protect circulating pumps and compressors.
⚙️ Key Technical Specifications
The AKS 38 switching differential can be adjusted from 12.5 mm (½") to 50 mm (2") in 12.5 mm (½") increments, providing flexibility for different liquid-level control requirements.
📋 Danfoss AKS 38 Model & Connection Range
AKS 38 is available with different connection standards and sizes to suit industrial refrigeration vessel and piping requirements.
| Type | Connection | Size | Danfoss Code No. |
|---|---|---|---|
| AKS 38 | Butt Weld – DIN | DN 25 / 1" | 148H3194 |
| AKS 38 | Butt Weld – ANSI | DN 25 / 1" | 148H3204 |
| AKS 38 | Socket Weld – ANSI | DN 20 / ¾" | 148H3205 |
| AKS 38 | Socket Weld – ANSI | DN 25 / 1" | 148H3206 |
| AKS 38 | FPT / NPT | DN 20 / ¾" | 148H3207 |
| AKS 38 | FPT / NPT | DN 25 / 1" | 148H3208 |
Butt Weld → DIN or ANSI DN25
Socket Weld → ANSI DN20 or DN25
FPT / NPT → DN20 or DN25
🏭 Typical AKS 38 Applications
According to Danfoss, the AKS 38 is intended for control and detection of liquid levels in several important industrial refrigeration applications.
Liquid-level detection and control in pumped refrigerant circulation systems.
Maintains or monitors refrigerant liquid level in flooded industrial refrigeration systems.
Liquid-level detection for flooded evaporator and chiller applications.
Suitable for refrigerant liquid-level detection in compatible high-pressure receiver applications.
Provides liquid-level switching for compatible low-pressure refrigeration vessels.
Suitable for level detection in compatible industrial refrigeration intercooler applications.
🛡️ High & Low Level Safety Protection
One of the most useful features of the AKS 38 is its ability to function as more than a normal liquid-level switch.
⬆️ High Level Safety
The AKS 38 can be configured to detect an excessive liquid level and provide a switching signal for the refrigeration control or safety circuit.⬇️ Low Level Safety
The switch can also detect a low liquid-level condition, depending on the system arrangement and required control strategy.🔄 Pump Protection
High/low liquid-level detection can be incorporated into circulating-pump protection and control systems.⚙️ Compressor Protection
The level switch can be incorporated into a safety circuit to help protect compressors against unsuitable system liquid-level conditions.⭐ Why Choose Danfoss AKS 38?
💪 Industrial Design
Developed specifically for industrial refrigeration liquid-level applications.📏 Adjustable Differential
Variable switching differential from 12.5 mm to 50 mm provides application flexibility.🛡️ IP65 Protection
The electrical switch enclosure provides IP65 protection for demanding equipment environments.🌡️ Wide Temperature Range
Suitable for operating temperatures from −50°C to +65°C.🔩 Multiple Connections
Butt weld, socket weld and NPT options simplify selection for different piping and vessel standards.🔧 Serviceable Design
Danfoss provides service parts for the AKS 38, supporting maintenance of industrial refrigeration installations.❄️ Refrigerant Compatibility
Danfoss lists AKS 38 versions for use with a broad range of refrigerants, including commonly encountered industrial and commercial refrigeration refrigerants.
R22 • R134a • R404A • R407 Series • R410A • R507A • R717 Ammonia
Always confirm the exact AKS 38 code number, refrigerant, pressure, temperature and connection requirements against the latest Danfoss technical documentation before installation.
🎯 How to Select the Correct AKS 38
1️⃣ Connection Type
Choose between butt weld, socket weld or FPT/NPT according to the refrigeration vessel and piping arrangement.2️⃣ Connection Size
Select the required DN20 / ¾" or DN25 / 1" configuration.3️⃣ Connection Standard
Check whether the installation requires DIN or ANSI connection standards.4️⃣ Refrigerant
Confirm compatibility with the refrigerant used by the industrial refrigeration system.5️⃣ Pressure & Temperature
Verify that system conditions remain within the applicable AKS 38 operating limits.6️⃣ Danfoss Code Number
For replacement applications, check the complete existing Danfoss code number whenever possible.Danfoss AKS 38 Float Switch Supplier Malaysia
RNA Engineering & Trading Sdn Bhd supplies Danfoss industrial refrigeration controls, liquid level switches and refrigeration spare parts for cold storage, industrial refrigeration and commercial refrigeration applications.
Contact us for pricing, availability and technical enquiries.
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