Details:
Compliance with following International Standards
- ASTM D1881
Purpose
- This test method covers a simple glassware test for evaluating the tendency of engine coolants to foam under laboratory controlled conditions of aeration and temperature.
Apparatus Description
- The complete set‐up will be supplied with following parts and accessories.
1) Test cylinder
- Capacity : 500‐mL graduated container of heat resistant glass
- Material : Made of Borosilicate glass material
- Diameter : 45 to 50 mm
- Height : 380 mm
2) Magnetic Stirrer with Hot Plate (Heat Source)
- Magnetic stirrer with hot plate will serve the purpose of heating temperature requirements.
- Stirring capacity : 5 Liters
- Speeds range : 100 ‐ 1500 rpm
- Material of hot plate : Porcelain Enamel Hot Plate model
- Temp range : Up to 340 °C
- Temp accuracy : ± 1 °C
- Temp Sensor : External temperature probe (PT‐1000) for control of fluid temperature
- Display : Easy‐to‐read backlit LCD for display of set & actual parameters
- Monitoring of set & actual temperature / speed
- High accuracy of temperature control with embedded dual sensors
- Last parameter recall, ideal for repetitive processes
- Scratch proof & excellent chemical resistance top plate
- A mode for running without external temperature sensor
- B Mode for control of temperature through external sensor
- Advanced Stirrers with microprocessor technology ,
- Unique safety temperature control system
- Constant speed even with change of load / Voltage,
- Settable safe temperature limit to avoid overheating
- Residual Temperature warning when unit is switched off for operator safety
3) Spherical Diffuser stone
- Spherical diffuser stone with defined pore diameter as per ASTM D‐1881 Standard.
- Connection for rubber tubing : A cadmium‐plated brass nipple fitting serrated for 0.5cm (3/16") rubber tubing
- Material of diffuser stone : Made of Alundum fused crystalline aluminum oxide.
- Permeability @ 2.45 kPa : 3000 to 6400 mL of air/min
- Pore diameter : not greater than 80 Micro meter
- Diffuser stone diameter : 1 inch (25.4 mm)
- Connection for rubber tubing : A cadmium‐plated brass nipple fitting serrated for 0.5cm (3/16") rubber tubing
4) Supply tubing
- Aerator tube having diameter of 1 inch (25.4 mm)for gas diffuser stone. This tube is connected to the spherical diffuser stone to supply the air pressure from pump.
5) Flow meter
- Rotameter assembly with flow control valve capable of maintaining the flow of 1000 ± 25 mL/min through spherical diffuser stone.
6) Digital stop watch
- Digital stop watch for observing and calculating time for gas supply through flow meter and for foam breakdown.
7) Air source (Air compressor)
- A clean and dry source, free from grease and other contaminants, capable of maintaining the prescribed flow rate as per ASTM D1881 requirement through the diffuser stone.
8) Rigid base support
- Entire setup is mounted on metal rigid frame which is powder coated in attractive shades.
9) Thermometer
- ASTM Partial Immersion Thermometer number ‐ 1C having a range from −20 to +150°C (0 to 302°F)
Note:
ASTM D892 Compliant Gas Diffuser Stone is imported & It will be supplied without calibration certificate. NIST Traceable Calibration Certificate will be charged at extra cost of Rs 80,000/-per piece. Please take note of it.
Optional accessories at extra cost:
- Glass Thermometer - (-20°C To 102°C X 0.2°C) Density Wide Range - (ASTM 12C / IP 64C): Price on request
- Three Way Stop Watch - PTFE: Price on request
