Low Nitrogen Determination in Steel
EMGA-930: Oxygen/Nitrogen/Hydrogen analyzer
Principle
Oxygen: Non Dispersive Infrared detector
Nitrogen: Thermal Conductivity detector（TCD）
Hydrogen: Non dispersive Infrared detector (as H2O)
Measurement range*:
Oxygen: 0-5%, Nitrogen: 0-3%, Hydrogen: 0-0.25%
*Up to 100% wt is possible by decreasing the sample weight.
Sample weight: 1.0 ± 0.1g
Sensitivity(Minimum reading): Oxygen/Nitrogen/Hydrogen: 0.001 ppm.
Accuracy**(Repeatability)
Oxygen/Nitrogen
σn-1≦0.02 ppm or RSD≦0.5% whichever is larger (Reference gas)
σn-1≦0.3 ppm or RSD≦1.0% whichever is larger (Standard sample)
Hydrogen
σn-1≦0.04 ppm or RSD≦2% whichever is larger (Reference gas)
** Based on the sample weight 1.0 ± 0.1g and with automation functions described below
Display
1) Measurement result: LCD or printout
2) Alarm message: LCD or printout
3) Flow sheet: LCD
Power of furnace
Inert gas fusion in impulse furnace
Enable to set the generating power 0 – 8.0 kw
Sample introduction: Dual sample/flux introduction mechanism
Automation functions: Auto cleaner, Crucible loader
Integration conditions:
Preset time integration
Integration up to reach comparator level
Preset time integration or integration up to reach comparator level, whichever is shorter
Sample ID: Enter up to 20 one-byte characters
Calibration
- One point or multi point calibration (Reference gas or standard samples)
- Calibration using previous analysis data
- Calibration curve correction function
Functions
- Display of real time extraction curve
- Analysis interruption
- Self diagnosis and alarm display
- Analysis of extraction curve (Superposition, difference etc analysis)
- Out put (RC-232C or TCP/IP)
Dimensions: 750mm(H)×785mm(D)×653mm(W)
Sample introduction is positioned at 650mm from table.
Weight: 230kg
On carrying, it is divided in two units (Under 140kg/unit)
Computer: PC model operating OS Windows® XP(SP2) and beyond
Power
Main unit: AC200/220/230/240V ± 10%
Auto cleaner: AC100V (Step-down transformer)
Frequency: 50/60 ± 1Hz
Electric power consumption
Main unit:12kVA (MAX)
Auto cleaner: 1.5kVA (MAX)
Ground resistance: Less than 10Ω
Installation condition
Operation temperature: 5-40°C
Performance temperature: 5-35°C
Humidity: Maximal relative humidity 80％RH between 5-31℃, linearly decrease down to 50％RH between 31-40℃
Vibration: Duplex amplitude 20micron and less than 0.098m/S2 accelerations at frequency band
Required gas
He carrier gas: Purity greater than 99.995%, Pressure 0.35MPa
Stainless steel pipe(O.D.3mm) and suitable connecter fitting within 3m of unit
Dry air or N2 as operating gas: Pressure 0.45MPa
Nylon pipe (O.D.6mm) and suitable connecter fitting within 5m of unit
Cooling mechanism: Radiator unit (Separation type)
Electronic balance (Option)
Enable connection with electronic balance with 1-0.01mg minimum display
Optional automatic voltage regulator (AVR)
Capacity:15kVA
Weight: 130kg
Fully Supported Accessories give simple operation
