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Drying Oven SLWN 240

POL-EKO Laboratory Drying Oven SLWN 240 (Nitrogen Purge) The SLWN 240 is a professional 245-liter forced-air drying oven equipped with an integrated dry nitrogen blow system. It is designed for large-scale thermal processing from ambient +5?C to +300?C in an inert atmosphere, making it essential for handling oxygen-sensitive chemicals, electronic components, and coal samples (compliant with ISO 589:2003). Controlled via the Smart 4.3-inch touchscreen, it features a specialized nitrogen rotameter, multi-segment programming, and comprehensive data logging. Its acid-proof stainless steel interior and 90 kg workload capacity make it a durable solution for high-throughput industrial and research applications.

SKU: SLWN 240 Categories: , Brand: Product ID: 21680

Description

The POL-EKO SLWN 240 is engineered for high-volume laboratories where preventing sample oxidation is as critical as temperature precision. The “N” in the model name highlights its Nitrogen Blow capability.7 By introducing dry nitrogen into the 245-liter chamber, the system effectively purges oxygen, creating an inert environment that protects sensitive materials from degrading, burning, or changing color at high temperatures.Gas Flow Management:The SLWN 240 is configured to ensure that the nitrogen purge is both effective and measurable:SLWN1 Version: Includes a laboratory rotameter that can be officially calibrated?essential for regulated pharmaceutical and aerospace applications.8SLWN2 Version: Equipped with a technical rotameter (non-calibratable) for standard industrial processes where high-precision certification isn’t required.9Efficient Purging: The system is designed to provide a flow rate capable of replacing the chamber’s volume multiple times per hour, as required by standards like ISO 589:2003 for moisture determination in hard coal.10Forced Air Performance:In a chamber of this size, temperature uniformity is maintained through forced air convection.11 The fan actively circulates the heated nitrogen/gas mixture, ensuring a temperature variation of only 12$pm$2.5?C at 105?C.13 This prevents “dead zones” where gas might stagnate or temperatures might drop, ensuring consistent results for all 10 possible shelf positions.+1Smart Control & Security:Interface: The 4.3″ Smart controller provides a clear overview of parameters.14 It allows for complex multi-segment temperature profiles to automate multi-stage curing or drying processes.15Safety: Built-in Class 2.0 (Smart) or Class 3.1 (Smart PRO) over-temperature protection ensures the unit remains safe even during unattended overnight runs.16Documentation: Integrated USB and LAN ports allow for easy data export, providing a full audit trail of both the temperature and the timing of each run.17Primary Applications:Industrial Electronics: Curing large batches of PCBs and semiconductors in an oxygen-free environment.Chemical Production: Drying large volumes of oxygen-sensitive powders or resins.Fuel & Energy Labs: Moisture analysis in coal and coke (ISO 589) where preventing oxidation is mandatory.18Advanced Materials: Heat treatment of polymers or metals that are prone to oxidative degradation.

Datasheet

Specifications

POL-EKO SLWN 240 Drying Oven Specifications

The SLWN 240 is a high-capacity laboratory oven designed for drying in an inert gas atmosphere. It combines forced air convection with a dry nitrogen blow system, making it essential for processes where oxygen must be displaced to prevent oxidation (e.g., drying electronic components or following ISO 589:2003 for coal moisture determination).

 
  • Air Convection: Forced (Fan-assisted)

     
  • Special Feature: Dry nitrogen blow system (includes connections, valves, and rotameter)

     
  • Chamber Capacity: 245 Liters

     
  • Working Capacity: 237 Liters (Note: Effective volume is slightly reduced to accommodate air distribution)

     
  • Temperature Range: +5°C above ambient to +300°C

     
  • Temperature Resolution: 0.1°C

     
  • Temperature Fluctuation at 105°C: ±0.4°C

     
  • Temperature Variation at 105°C: ±2.5°C

     
  • Over Temperature Protection: Class 2.0 (Standard) / Class 3.1 (Optional)

     
  • Controller: Microprocessor PID with 4.3″ touch screen (Smart)

     
  • Internal Dimensions (W x H x D): 600 x 800 x 500 mm

     
  • External Dimensions (W x H x D): 820 x 1140 x 770 mm

     
  • Shelves (Standard / Max): 3 / 10

     
  • Max. Shelf Workload: 25 kg (100 kg for reinforced version)

     
  • Max. Total Unit Workload: 90 kg (300 kg for reinforced version)

     
  • Interior Material: Acid-proof stainless steel (DIN 1.4301)

     
  • Housing Material: Powder coated sheet (Standard) or Stainless steel linen finish (IG version)

     
  • Connectivity: LAN and USB ports

     
  • Voltage: 230V, 50/60 Hz

     
  • Nominal Power: 3100 W

     
  • Weight: 114 kg

     

Nitrogen Flow Options

When ordering the SLWN 240, you must choose between two rotameter types:

 
  • SLWN1: Equipped with a laboratory rotameter that can be officially calibrated for precise gas flow monitoring.

     
  • SLWN2: Equipped with a technical rotameter for standard applications where formal calibration is not required.

     

Core Functionality

  • Oxidation Prevention: By purging the chamber with nitrogen (which has a lower specific gravity than air), the oxygen is immediately displaced, ensuring an anaerobic environment for sensitive samples.

     
  • Smart Data Management: The controller records temperature data and events (like door openings) which can be exported via USB. It also includes an open-door alarm and a door lock for security.

     
  • Industrial Applications: Specifically suited for the aerospace, nuclear, and marine industries, as well as pharmaceutical labs performing moisture analysis under nitrogen.