K. V. Scientific Instruments Co.

Kirti Nagar, Delhi

The updated models of Salt/Cass Fog Test Chamber specially designed for evaluating the corrosion resistance of the surface treatment of metallic materials by Copper Accelerated Acetic Acid Salt Spray Test Method. It consists of following parts :

• Test Chamber : It consists of Cabinet and Lid and is constructed with insulated double structure made of FRP (Fiber Reinforced Plastic) Moulded Sheet. The Interior & Exterior Sides of the Chamber are Acid Proof, Alkali Proof, Impact Proof and easy to clean. The upper part (triangular shaped lid made of FRP with Acrylic Glass Window) has sufficient space for the mist to accumulate naturally on it and is so shaped that drops so accumulated do not fall on specimen being tested. A full top opening door will be provided for ensuring maximum working space inside the Chamber.
• Air-Saturator : It is provided to supply heated and humidified clean air, over 90% to 98% RH, for Atomization of the solution. It consists of Body (made of stainless steel), Heater, Bubbling Nozzle, Air Cleaner & Pressure Regulator.
• Air Regulator : The Air Regulator will maintain a constant pressure of air at 70 to 170 kpa
• Air Filter : The compressed air will be passed through a filter arrangement to remove all traces of oil and solid matters before sent to the saturation tower.
• Lid Sealing : Lid sealing through water seal method
• Mist Dispersion Atomizer : Atomizer made of Acrylic Glass will be equipped in the Chamber having property of non-choking. It produces a mist of atomized solution, which is distributed uniformly throughout the exposure zone by means of Mist Dispersion Atomizer incorporated with a baffle to prevent dispersion of large liquid droplets.
• Heating System : The temperature within the chamber maintained by heater with blower system, which provided in-between the exterior and interior walls.
• Solution Supply Tank : Solution Supply Tank will be provided to supply solution to Mist Dispersion Tower and will be made of FRP (Fiber Reinforced Plastic) Moulded Sheet.
• Solution Heating : Heating of solution in the Solution Tank by a special type of Glass Heating Element (two nos) fitted in the Solution Tank.
• Mist Collector : Two Mist Cylinders are provided for measurement mist quantity. Each has 80 cm² of horizontal area. The condensate is collected in individual graduated cylinders.
• pH Indicator : pH Indicator is inbuilt in Control Panel
• Control Panel : Separate Control Panel will be provided.

The Control Panel will House :

• RH and Temperature Controller-cum-Indicator for Main Chamber.
• PID Temperature Controller-cum-Indicator for Air Saturating Tower.
• PID Temperature Controller-cum-Indicator for Solution Tank.
• Pre – Set Timer, ON/OFF Switches, MCB, Electronic Relays, Indicating Lamps & Time Totaliser
• pH Indicator.

Safety DeviceAudiovisual Alarm start at the time of shortage of water in both the Saturating Tower and Solution Tank.

WiringAll wiring will be as IS code.  Channel type wiring will be done with suitable current rated copper wires.

Standard Accessories

• SS Rod with PVC coating : 05 pcs
• Measuring Cylinder with Rubber Cork : 02 nos
• Glass Funnel : 02 nos
• S. S. Hanger : 15 pcs
• EPT Tube : 01 Mtr.                                                          

Power Supply : 220/240 V, 50 Hz, Single Phase, AC Mains.                                                                                                                             
Performance

• Test Temperature :  Ambient to 50°C
• Temperature Accuracy : ± 1^oC.
• Humidity Range :  95% to 98% will be maintained during the Salt Spray with  saturation of Salt Solution.
• Humidity Indicator :  RH Indicator will measure 90% to 100%.
• Mist Collection :  1-3ml/80cm²/hour at the same position as specimen to be tested.
• Mist Pressure :  0.8-1.8Kg/cm² (70-170 KPA).
• Heating System :  Through hot air tower system.

Standards  : As per ISO 7253:1984, IS – 101 (Part 6/Sec 1 – June 1997), IS – 9000, IS – 6910, ISO – 3768 Part-I, ASTM – B – 117 – 73, ASTM – B – 368, DIN – 50021, JIS – 2371

We are Manufacturing Environmental Test Chamber for customers in India and overseas. We are a recognized Environmental Test Chamber Manufacturer, Exporter and Supplier. Our Environmental Test Chambers are precisely designed by our domain experts as per the set industrial standards and norms.

Environment Chamber

• Chamber  : Double Walled
• Exterior Chamber : Made of Heavy Duty Mild Sheet with three coats of paint.
• Interior Chamber : Made of Heavy Duty Stainless Steel Sheet 304 qlty.
• Insulation  : The Interior Chamber is insulated with with 150 mm thick glass wool and Puff Insulation all around for ordering to limit radiation.
• Door : A full front opening door, double walled insulated and interior lined  with Stainless Steel will be provided for ensuring full access to the working space inside the  chamber.
• Gasket : Two gaskets, one on the chamber and the other one for leakproofness  at the door, are fitted.
• Locking System : The door is also provided with heavy duty hinges & latches with toggle type locking arrangement.
• Portability : Trolley mounting with casters for easy portability.

Air CirculationThe homogeneous condition of temperature inside the chamber maintaining by a forced blower with continuous duty rated TEFC motor for circulation. The conditioning space in the main chamber is baffled and heater and cooling coil is located in the conditioning space. The refrigeration unit is fitted under the chamber so as to ensure minimum space utilization.

Heating SystemLow surface loading sealed tubular heaters conforming to IS-4159 provided to add heat in the chamber. The heaters are located in the conditioning space and there will not be any direct radiation of heat on the item under test.

Humidity SystemLow-pressure moisture generator will be provided to generate moisture and add humidity in the chamber. The generator will be of minimum water level controller and mechanical float type refilling arrangement. Soft water will be used for the moisture generator.

Refrigeration SystemTwo-stage air cooled cascade refrigeration system will be provided with evaporative cooling attachment for working in high summer ambient condition. The system is fitted with HP/LP cut off switch, overload protector, backup fuse protection etc. Low RH condition is maintained by smooth tube evaporation coil dehumidification arrangement.

Controller Microprocessor Based Programmable Controller for Temperature and RH with Printing Facility.

Control Panel & Wiring Control Panel will be provided at the lower side of the chamber, which will house Microprocessor Based Programmable Controller for Temperature and RH with Printing Facility, On/Off Switches, Fuses, Contactors, Digital Volt Mater, Digital Ampere Meter, Limit Switch, MCB and Indicating Lamps etc. All the channel type wiring will be as per IS code.                                                                                                                    

Safety Protection

• Back up fuse protection for mains and individuals circuit.
• Over temperature safety cut off thermostat with audiovisual alarm.
• Overload protector for motor.
• HP/LP cut off switch for compressor.
• MCB for heaters.
• Minimum Water Level Controller with Mechanical Float Type refilling arrangement will be provided.

Utilities

• One Stainless Steel bar shelf with adjustable height arrangement will be provided.
• Window  : 30 cm x 30 cm, 2 pane with low wattage heater.
• Chamber drain.

The updated model of Water / Rain Spray Chamber specially designed to determine suitability of electronic and electrical components driving under rain conditions.

Construction

• Chamber :  Double Wall and leak proof.
• Interior Chamber :  Will be made of Heavy Duty Stainless Steel
• Exterior Chamber : Will be made of Heavy Duty Mild Steel / Stainless Steel
• Bottom Tank :   Made  of  Heavy Duty Stainless  Steel  Sheet and is mounted on the Trolley below the Main Chamber.
• Portability  :   Mounting type trolley with casters for easy portability will be provided.
• Drainage System : The Chamber will be provided with Tapered Drain Holes to drain out water accumulated inside the Chamber.
• Viewing Window : A viewing window of 30 x 30 cms will be provided on Front Door.
• Door : A full front opening door, double walled insulated will be provided for ensuring full access to the working space inside the chamber.
• Gasket : Two gaskets, one on the chamber and the other one for leakproofness at the door, will be fitted.
• Locking System : The  door  is  also  provided  with  heavy  duty  hinges  &  ratchet type locking system.

Chamber The chamber will be provided with a cylinder in the centre with 8 nos. of sockets, which will be connected to the nozzle. The cylinder will be fed through a suitable pump to create the sufficient pressure with by-pass valve and the main valves will control the pressure in the cylinder which in-turn control the pressure at the nozzle tips. All the connections will be provided with compression fitting for leakproofness. The same water will be re-circulated.

Precipitation Measurement  : Precipitation measurement will be done by using collector of 100 mm height and inside diameter 140 mm.

Water Spray Nozzles  As per IS – 9000 : Water Spraying 8 Nozzles capable of spraying water in solid cone form to get precipitation rate of 2.5 mm / minute will be equipped in the chamber. Eight Water Spray Nozzles will be equipped in the Chamber out of which Four Nozzles at the top Four Corners at an angle of 45° and four Nozzles in the centre of each four sides.

Rain & Shower Nozzle As Per JIS D 0203 : Shower through 40 holes and rain through two holes. Rotation of the Rain & Shower Nozzle is 17 rpm.

Pressure Gauges  :  Separate pressure gauge will be provided for each spray nozzle along with Pressure Regulator, for indicating the pressure of the nozzles at the nozzles. The pressure gauges will be mounted on the panel  and equivalent  length of copper tubing which run to the nozzle end  and the gauges will be calibrated  accordingly.

Port Holes : Port Holes with suitable Rubber Plugs will be provided to access for Internal Chamber Volume and for connecting wires/pneumatic pipes etc.

Revolving Table  : Revolving Table with geared motor with Clockwise & Anticlockwise rotation having diameter between 450 mm to 500 mm at the centre of the working space will be provided. Table will be capable of rotating around its vertical axis.  
Table RPM  :The RPM of the table will be variable between 2 to 10 rpm with an accuracy of ±0.5 rpm.

Hour Meter  : The Chamber will be equipped with Hour Meter for chamber operation time measurement.

Control Panel & WiringAt the right hand side of the chamber a control panel will be fixed with all the controls, switches, fuses, contactor assemblies and indicating lamps etc. All the channel type wiring will be as per IS Code for suitable current rated copper wires.

Timer : Timer will be provided in the Chamber for Auto Switch Off of the complete chamber after completion of the selectable test time period.

Other Specifications

• Showers/Nozzles :  8 Nos (as per IS – 9000)
• Pressure Gauges :  8 Nos (as per IS – 9000)
• Rain & Shower Nozzle :  1 No. (as per JIS D 0203)
• Pressure Gauges :  1 No.
• Indicator :  Elapsed Time Indicator
• Power Supply :  220/415 Volt, AC, 50Hz

Other Features

• Door opening :  From front side.
• Precipitation Rate :  Precipitation Rate of Water Spray will be 2.5 mm/min.
• The Chamber will be capable of spraying water at Ambient temperature.

Standard : IS-9000 (Part XVI)-1983 & JIS D 0203

Size : 1.0 Cubic Meter

Safety Protection

• Back up fuse protection for Mains, Pump and Geared Motor.
• Overload protection for Pump and Geared Motor.
• Audio-Visual Alarm for High Temperature and Test Completion.
• Safety Limit Switch will also be provided.

We offer a high grade Dust Chamber to customers in India and overseas. The construction of the Chamber will be such to avoid direct radiation of heat on the test specimen. The floor of the chamber will be so designed as to permit the dust fall in to the hopper for recirculation of supporting specified load of the floor area.

Construction 

• Exterior Chamber :   Will be made of Heavy Duty Mild / Stainless Steel
• Interior Chamber : Made of Heavy Duty Stainless Steel
• Door : Double walled full front opening door, insulated with interior stainless  steel lining.
• Gasket : To avoid leak proofing, the chamber will be provided with gaskets for the Chamber and for the Door.
• Mounting Trolley : Mounting type trolley with casters for portability will be provided.
• Hinges & Latches : Heavy duty Hinges with toggle type locking arrangement

Heating System  For temperature uniformity in the chamber, low surface loading sealed tubular heaters will be provided as per IS 4159. The heaters will be fixed in conditioning space in the chamber duly baffled to avoid direct radiation.

Heat input Controlling  : Through Solid State Triac Firing Energy Regulator will control with 0 to 100 % proportional control for heating.

Port Holes  Port Holes with suitable Rubber Plugs will be provided to access for Internal Chamber Volume and for connecting wires/pneumatic pipes etc.

Dust Agitating Mechanism

• Dust Agitating Mechanism will be provided with fan with motor of sufficient capacity without allowing heating up unduly during constant operation of 200 hours.
• Pressure Vacuum will be provided in the dust spray chamber.
• Provision of using, either fan or vacuum or both can be used at a time, will be provided.
• Average dust sprayed will be 25 gms ±5 gms in 5 minutes.

Timer  Programmable Weekly Timer will be provided in the Chamber for Auto Switch Off of the complete chamber after completion of the selectable test time period.

Dust Collector  : Hopper shaped bottom will be provided to collect agitating dust (approx 3 to 5 kg).

Dust Measuring Device  : Dust measuring device will also be provided.

Viewing Window  : A viewing window of 30 x 30 cms will be provided on Front Door.

Control Panel 
Separate Control Panel on top of the Chamber will be provided with Contactors, On/Off Switches, Fuses, Indicating lamps. The wiring, will be channel type with suitable current rated copper wire as per,   IS Code.

Other specifications  

• Temp. Range :   Ambient +5^oC to 80^oC
• Gradient in Space :   1.5 ^oC
• Insulation : 75 mm Thick Glass Wool Insulation
• Power Supply : 220 / 415 V, Single / Three phase
• Size : As per Customer’s requirement
• Wiring  : The wiring will be channel type with suitable current rated copper wire as per IS code.

Provision of using, either fan or vacuum or both can be used at a time, will be provided.

Safety Protection 

• Overload Protector for motor.
• MCB for heaters.
• Back up Fuse.
• Protection for Mains and Individual Circuit.

Standards
The Equipment will meet requirement :

• IS : 12063 – 1987
• IS : 13947 (Part – I) – 1993
• IEC : 60529

Instrumentation   Solid State Digital Temperature Controller-cum-Indicator will be provided with PT-100 Temperature Thermocouple.