NPD Environmental Chamber
Cooled Stability Chamber | Model NPD-241 | Forced Convection
The NPD-241 Environmental Chamber is designed for quality-control and stability testing under controlled temperature and humidity conditions. Ideal for pharmaceutical, food, packaging, material, electronics and general laboratory applications that require repeatable environmental test settings.
Repeatable Climatic Conditions for Stability Testing
The NPD-241 Environmental Chamber (Cooled Stability Chamber) provides a temperature-controlled and humidity-controlled environment for stability studies, product evaluation and quality assurance. A forced-convection fan circulates air through the insulated chamber, while the CFC-free refrigeration system provides cooling and a steam-generation tank supplies humidity.
Designed with an SS-304 inner chamber, powder-coated CRC outer body and high-grade PUF insulation, it supports consistent laboratory operation. Adjustable stainless-steel shelves, a secure double-walled door and a choice of LCD or TFT temperature controllers make it suitable for different testing requirements.
Key Features & Benefits
Construction, control and operating features described in the NPD-241 product document.
Uniform Forced Air Circulation
The self-cooled circulation fan maintains even airflow to reduce temperature and humidity gradients.
Temperature & Humidity Control
10°C to 60°C operation with steam-generated humidity from 40% to 95% RH, as stated for NPD-241.
Reliable Cooled Operation
A CFC-free refrigeration compressor supports cooling for repeatable environmental conditions.
Durable SS-304 Construction
Stainless-steel interior, powder-coated CRC exterior and high-grade PUF insulation.
LCD or TFT Controller
Choose a microprocessor LCD controller or an HMI-PLC TFT colour touch-screen option.
Secure & Flexible Access
Lockable double-walled door, magnetic gasket and adjustable stainless-steel shelves.
Technical Specifications
NPD Environmental Chamber, Model NPD-241 — specifications from the supplied document.
| Parameter | Specification |
|---|---|
| Make | NPD |
| Model | NPD-241 |
| Type | Forced Convection Cooled Stability / Environmental Chamber |
| Temperature range | 10°C to 60°C |
| Temperature accuracy | ±1°C at 37°C |
| Humidity generation | Steam-generation tank |
| Humidity range | 40% to 95% RH; 5% above ambient at cool temperatures |
| Humidity accuracy | ±3% RH |
| Temperature controller | Microprocessor-based digital temperature indicator-cum-controller with LCD display, or HMI-PLC-based TFT touch-screen colour display controller |
| Humidity controller | Digital temperature-humidity indicator-cum-controller |
| Inner chamber | Stainless Steel SS-304 |
| Outer body | CRC sheet, powder coated |
| Insulation | High-grade Polyurethane Foam (PUF) |
| Air circulation | Self-cooled circulation fan, forced convection |
| Refrigeration system | CFC-free compressor |
| Door | Double-walled front door with lock and key |
| Door sealing | Magnetic gum packing |
| Shelves | Adjustable stainless-steel shelves |
| Electrical supply | 220/230 V AC, 50/60 Hz |
| Optional feature | Interior illumination with cyclic timer |
Temperature accuracy is specified at 37°C. The document also states “5% above ambient at cool temperatures” for the humidity range; confirm suitability for your required test conditions.
LCD & TFT Environmental Chamber Models
Eight sizes are documented for each controller option, covering 112 L to 1,000 L nominal capacity.
LCD Digital Controller Models
| Model | Display | Capacity | Volume | Shelves |
|---|---|---|---|---|
| EC-4(LCD) | LCD | 112 L | 4.0 cu ft | 2 |
| EC-6(LCD) | LCD | 171 L | 6.1 cu ft | 2 |
| EC-10(LCD) | LCD | 285 L | 10.0 cu ft | 3 |
| EC-12(LCD) | LCD | 340 L | 12.0 cu ft | 3 |
| EC-16(LCD) | LCD | 450 L | 16.0 cu ft | 4 |
| EC-20(LCD) | LCD | 560 L | 20.0 cu ft | 4 |
| EC-28(LCD) | LCD | 800 L | 28.0 cu ft | 6 |
| EC-35(LCD) | LCD | 1,000 L | 35.0 cu ft | 6 |
HMI-PLC TFT Touch-Screen Controller Models
| Model | Display | Capacity | Volume | Shelves |
|---|---|---|---|---|
| EC-4(TFT) | TFT | 112 L | 4.0 cu ft | 2 |
| EC-6(TFT) | TFT | 171 L | 6.1 cu ft | 2 |
| EC-10(TFT) | TFT | 285 L | 10.0 cu ft | 3 |
| EC-12(TFT) | TFT | 340 L | 12.0 cu ft | 3 |
| EC-16(TFT) | TFT | 450 L | 16.0 cu ft | 4 |
| EC-20(TFT) | TFT | 560 L | 20.0 cu ft | 4 |
| EC-28(TFT) | TFT | 800 L | 28.0 cu ft | 6 |
| EC-35(TFT) | TFT | 1,000 L | 35.0 cu ft | 6 |
On mobile, swipe the tables sideways to see all columns. Capacity and shelf counts are taken from the supplied model-selection tables.
Control, Cooling & Construction
Temperature & Humidity Control
- Microprocessor-based digital temperature indicator-cum-controller with LCD display
- HMI-PLC-based TFT touch-screen colour display controller option
- Digital temperature-humidity indicator-cum-controller for humidity regulation
- Temperature accuracy of ±1°C at 37°C and humidity accuracy of ±3% RH
Cooling, Airflow & Humidification
- CFC-free hermetically sealed refrigeration system
- Steam-generation tank supplies humidity under controller supervision
- Self-cooled forced air circulation fan for uniform chamber conditions
- Designed to reduce temperature and humidity differences within the chamber
Cabinet Construction
- SS-304 stainless-steel inner working chamber
- Powder-coated CRC sheet outer body
- High-grade polyurethane foam insulation between chamber walls
- Adjustable stainless-steel shelves for flexible sample placement
Door, Power & Operator Use
- Double-walled front door with lock-and-key arrangement
- Magnetic gum packing for external door sealing
- Standard power supply: 220/230 V AC, 50/60 Hz
- Optional interior illumination with cyclic timer available upon request
Options & Installation Requirements
Optional Cyclic Illumination
Interior illumination with a cyclic timer can provide programmed light exposure for photostability-related work or day/night simulation. This is optional and must be specified with the order.
Confirm the required illumination cycle with the supplier.
Installation Checklist
- Supply: 220/230 V AC, 50/60 Hz
- Use a level, vibration-free floor
- Provide rear and side clearance for ventilation and servicing
- Arrange appropriate water supply and drainage for the steam tank
- Maintain good refrigeration-system ventilation
- Ensure suitable earthing and overload protection
Ordering Information
- Select chamber size EC-4 through EC-35
- Choose LCD digital or HMI-PLC TFT touch-screen controller
- Provide required temperature and humidity set points
- Confirm the quantity and arrangement of shelves
- Specify optional cyclic illumination if required
- Advise any electrical supply requirement different from standard
Available Chamber Volumes
Select from 112, 171, 285, 340, 450, 560, 800 or 1,000 L nominal capacities. Each size is listed with both LCD and TFT control options; corresponding shelf counts are shown in the model tables above.
The supplied document does not specify physical chamber dimensions; request dimensional drawings before purchasing.
Applications
Typical laboratory, stability and industrial use cases stated in the NPD-241 document.
Environmental Chamber FAQs
What is the temperature operating range of NPD-241?
The documented operating temperature range is 10°C to 60°C, with temperature accuracy of ±1°C at 37°C.
What humidity range can the Environmental Chamber maintain?
The document specifies 40% to 95% RH with ±3% RH accuracy. It also notes 5% above ambient at cool temperatures; confirm operating conditions for your intended settings.
What LCD and TFT models are available?
Both controller ranges include EC-4, EC-6, EC-10, EC-12, EC-16, EC-20, EC-28 and EC-35. Each model is available in LCD or TFT form.
Which chamber capacities are listed?
The supplied model-selection table lists capacities of 112, 171, 285, 340, 450, 560, 800 and 1,000 litres.
How is humidity generated and regulated?
A steam-generation tank provides humidification, managed by a digital temperature-humidity indicator-cum-controller.
Is interior illumination included?
Interior illumination with a cyclic timer is an optional accessory and should be specified when ordering.
What supply and installation arrangements are required?
The standard supply is 220/230 V AC, 50/60 Hz. Install on a level, vibration-free floor with airflow clearance, suitable drainage/water supply, earthing and overload protection.
Need an Environmental Chamber?
Share your required chamber capacity, LCD/TFT controller choice, temperature-humidity set points, shelving needs and optional light-cycle requirements for the right NPD-241 configuration and quotation.