Three - Point Capacitance Automatic Emission Spectrometer For Mineral Elements Analyzing

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

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