| Customization: | Available |
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| Material: | Stainless Steel |
| Type: | Slit Type |
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The operation cost of a ductless fume hood is substantially lower than a traditional labratory fume hood because it requires no installation. Each unit has been calibrated, certified for operation and ready to use upon delivery. Conventional hoods require installation of a blower, ductwork through the building and assembly of the fume hood. All of this takes time and money.
HVAC-free ductless fume hoods can be moved and operational in minutes where conventional laboratory enclosures may be out of service for weeks. Beyond the power cord, a ductless enclosure has no external connections preventing a location change and can be placed on a cart and moved from room to room. Traditional lab hoods require a third party to move exhaust duct work and other connections before the unit may be relocated.
Ductless filtration recycles existing room air while cleaning the chemical mixture. No harmful fumes or vapors are released into the environment. The bonded carbon filter can be safely disposed of in a landfill once saturated.
Advanced monitoring and safety controls have allowed ductless hoods and filtered workstations to continue gaining acceptance in a variety of laboratory applications. Constant monitoring of face velocity and filtration is critical to the safety of laboratory personal.
| Model Specification | WJ-1500A | WJ-1500B | WJ-1800A | WJ-1800B |
| External dimensions of equipment(mm) | 1500(W)*1205 (D) *2400 (H) | 1800(W)*1205 (D) *2400 (H) | ||
| Dimension of works pace (mm) | 1260(W1)*780(D1) *1100 (H1) | 1560(W1)*780(D1) *1100 (H1) | ||
| Panel material | 20+6mm thick butterfly ceramics | |||
| Material of internal lining board | 5mm thick ceramic fiber board | |||
| Diversion structure | Lower air return | |||
| Control system | Button control panel (LCD panel) | |||
| PH value control | The medium is alkaline water solution; manual monitoring, and manual control through acid pump and alkali pump. | |||
| Input power | Three-phase five-wire 380V/50A | |||
| Current for air fan | Not over 2.8A(380V or 220V can be directly connected) | |||
| Maximum load of socket | 12 KW(total of 4 sockets) | |||
| Water tap | 1 set (remote control valve + water nozzle) | No | 1 set (remote control valve + water nozzle) | No |
| Water discharge way | Magnetic chemical pump strong discharge | |||
| Using environment | For non-explosion indoor use, within 0-40 degrees Celsius. | |||
| Applicable fields | Inorganic chemistry experiment; Food, medicine, electronics, environment, metallurgy, mining, etc. | |||
| Ways of Purification | Spray sodium hydroxide solution, no less than 8 cubic meters/hour | Spray sodium hydroxide solution.no less than 12 cubic meters/ hour | ||
| Ways of surface air speed control | Manual control (through the electric air valve to adjust the exhaust air volume or adjust the height of the moving door) | |||
| Average surface air speed | 0.6-0.8 m/s Exhaust air volume: 1420-1890m3/h (when door height h =500mm) | 0.6-0.8 m/s Exhaust air volume: 1760-2340m3/h (when door height h =500mm) | ||
| Speed deviation of surface air | Not higher than 10% | |||
| The average intensity of illumination | Not less than 700 Lux; Standard white and uv-free yellow LED lamps; The illumination is adjustable. | |||
| Noise | Within 55 decibels | |||
| Flow display | White smoke can pass through the exhaust outlet, no overflow. | |||
| Safety inspection | No spikes, edges; Charged body and the exposed metal resistance is greater than 2 mQ; Under 1500V voltage, no breakdown or flashover occurred for 1min test. | |||
| Resistance of exhaust cabinet | Less than 160 pa | |||
| Power consumption | Less than 1.0kw/h (excluding power consumption of fans and external instruments) | Less than 1.2kw/h (excluding power consumption of fans and external instruments) | ||
| Water consumption | Less than 3.2L/ h | Less than 4.0L/ h | ||
| Performance of wind compensation | With a unique wind compensation structure, the volume of the wind will not cause turbulence in exhaust cabinet and will not directly blow to the staff (need to connect to the air compensation system of the laboratory) | |||
| Air volume regulating valve | 315mm diameter flanged type anti-corrosion electric air flow regulating valve (electric contact actuator) | |||
FUME HOOD MATERIALS
A. Steel: High quality, cold rolled, mild steel meeting requirements of ASTM A366; gauges U.S. Standard.
B. Stainless Steel: Type 304; gauges U.S. Standard.
C. Ceiling Closure Panels: Minimum 18-gauge; finish to match hood exterior.
D. Bypass Grilles: Low resistant type, 18-gauge steel, upward directional louvers.
E. Safety Glass: 7/32" thick laminated safety glass.
F. Sash Cables: 7 x 7 steel, coated, 1/16" diameter coated to 3/32". (Military spec. quality)
G. Sash Guides: Full length extruded corrosion resistant polyvinyl chloride or powder coated steel with PVC guides to protect against metal to metal contact.
H. Pulley Assembly for Sash Cable: 2" diameter, nylon tired, ball bearing type with cable retaining device.
I. Sash Pull: Full width 16-gauge steel to match hood color.
J. Interior Access Panels: To be made of the same material as the fume hood liner. Panels are to be held in place by means of a non-mechanical type fastening system.
K. Fastenings:
1. Exterior structural members attachments: Sheet metal screws, zinc plated.
2. Interior fastening devices concealed. Exposed screws not acceptable.
3. Exterior panel member fastening devices to be corrosion resistant non-metallic material. Exposed screws not acceptable
• Hoods should be evaluated by the user before each use to ensure adequate face velocities and the absence of excessive turbulence.
• In case of exhaust system failure while using a hood, shut off all services and accessories and lower the sash completely. Leave the area immediately.6 Questions to Ask When Buying a Fume Hood:
-Which chemicals will you use within the hood?
-Is a ducted or ductless hood best suited to your needs and available space?
-Where will you place the fume hood in the lab? Consider workflows, access to external exhaust systems, and competing air patterns.
-What size fume hood will best suit your needs? Be sure to consider what (if any) equipment will be enclosed in the hood.
-Are any service fixtures or accessories such as airflow monitors, electrical outlets, water, or gas fixtures required?
-Are base cabinets for acid, solvent, or non-chemical storage required?
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