Three - point capacitance Automatic Emission Spectrometer for mineral elements analyzing
Technical data of NBICP-1000II:
Radio Frequency Generator (RF)
(1) Electric Circuit: Three - point capacitance self-excited oscillation circuit
(2) Frequency:40.68MHz
(3) Frequency Stability:<0.1％
(4) Output Power:800-1200W
(5) Output Power Stability:≤0 3％
(6) Electromagnetism Leakage Intensity: 30cm from the main machine
Electric Field E:<2V／m
Sampling Device
(1) Output Work coil: ID 25mm, 3 turns.
(2) Torch pipe:OD 20mm, quartz
(3) Coaxial type nebulizer: OD 6mm
(4) Double barrel chamber: OD 34mm
(5) Argon Flow Meter:
① Plasma gas flow meter: (100—1000)L／h (1.6-16L/min)
② Assistant gas flow meter: (10-100)L／h
(0.6-1.66L/min)
③ Carrier gas flow meter: mass flow meter, controlled by PC(0-5L/min)
Optical Splitter
(1) Optical Path:Czemy—Turner
(2) Focal Length: 1000mm
(3) Grating: Ion etching holographic grating, 3600 lines／mm, 80×110mm
(Optional: 2400 lines／mm, 80×110mm)
(4) Reciprocal of Linear Dispersion Ratio:0 26nm
(5)Resolution:≤0．008nm
(6)Scan Wavelength Scope:
3600 lines／mm:195—500nm
2400 lines／mm:195—800nm
(7) Minimum Step Distance of Stepping Motor Drive:0 0006nm
(8) Exit and incident slit:20um
(9) Reflector:(78×105×16)mm
(10) Lens: Φ30,1:1 imaging
(11) Splitter Thermostat:32°±1°
Photometric Device
(1) Photomultiplier Tube:R21 2UH or R928
(2) Negative High Voltage of Photomultiplier Tube:200—1000V
Stability <0.05％
(3) Current Measure Range of Photomultiplier Tube:10-4～10-9 A
(4) Signal Acquisition: V/F exchange: 1 mV corresponds to 100Hz
