جهاز تحليل مساحة السطح (BET)

TriStar II 3020, Micromeritics, USA
:Specifications
Pressure Measurement
 Absolute Range: 0 to 950 mmHg
Resolution: Within 0.05 mmHg
Accuracy: Within 0.1% of full scale

Linearity: < ± 0.1% of span

Relative P/Po range: 0 to 1.0 P/Po
Resolution: < 10-4
 

Analysis

Specific Surface Area From 0.01 m2/g, nitrogen unit
From 0.001 m2/g, krypton unit

Total Surface Area From 0.1 m2, nitrogen unit
From 0.01 m2, krypton unit
Pore Volume From 4 × 10-6 cm³/g
Dewar Duration Up to 40 hours
Gas Consumption Up to 300 cm³ STP per port
 

Adsorptive Gases

Nitrogen Unit Nitrogen; argon, carbon dioxide, or other non-corrosive gases; butane, methane, or other light hydrocarbon vapors. Oxygen can also be used only with an appropriate vacuum pump.
Krypton Unit Same as nitrogen unit, plus the capability to perform krypton surface area analyses at lower pressures
The TriStar II Plus should be operated in a properly vented environment when using flammable or toxic gases.

 

Manifold Temperature

Accuracy ±0.25 °C
Resolution Within 0.1 °C
 

Vacuum System

Nitrogen Unit Must accommodate 20 × 10-3 mmHg or better; uses oil-based or oil-free vacuum pump
Krypton Unit Must accommodate 1 × 10-3 mmHg; oil-free vacuum pump required
 

Operating Environment

Temperature 10 to 35 °C (50 to 95 °F), operating
0 to 50 °C (32 to 122 °F), non-operating
Humidity 20 to 80% relative, non-condensing
Indoor or Outdoor Use Indoor only
Altitude: 2000 m maximum
Pollution degree of the intended environment: 2
 

Physical

Height 74 cm (29 in.)
Width 40 cm (16 in.)
Depth 51 cm (20 in.)
Weight 37 kg (82 lbs)
 

Electrical

Voltage 100-240V~
Power 150VA, maximum
Frequency 50/60Hz
Overvoltage category II
TriStar II Plus