TM-998F spark photoelectric direct reading spectrometer

Features:

1.750mm/1000mm focal length grating design, Paschen-lange device, high vacuum, high resolution, high sensitivity and so on. Since the engraved grating can produce a higher order spectrum, the line selection is more flexible, thereby avoiding spectral interference.

2. The structure design of the instrument is reasonable. The electronic system adopts the international standard German chassis, high integrated circuit design, and low failure rate.

3. The analysis speed is fast, the repeatability is good, and the stability is good.

4. Using a highly stable excitation source, the excitation frequency varies between 150-500 Hz, different samples can be analyzed, and different excitation parameters can be selected to achieve the best analysis results.

5. Highly integrated acquisition and control system with high degree of automation.

6. The imported photomultiplier tube has the characteristics of small dark current, high signal to noise ratio and long service life.

7. Analyze the scanning process to scan all the elements at the same time. The scanning process is simple, and the deviation of each element relative to the matrix element can be quickly analyzed.

During the excitation of the sample, there is no need to water-cool the excitation stage, and continuous analysis of the sample can achieve better data.

8. The measurement and control system adopts microcomputer measurement and control, and exchanges data with the computer to improve the running speed.

9. The computer software is used to adjust the negative voltage of the photomultiplier tube of each channel, and the negative and high voltage of the channel are adjusted in 8 steps, thereby greatly improving the utilization of the channel and analyzing the optimal linear range of the spectral line. Reduce the number of channels used and reduce costs.

10. Can be used for a variety of matrix analysis: Fe, Co, Cu, Ni, Al, Pb, Mg, Zn, Sn, and the like.

11. Using the operating software under the pure Chinese Windows system, the English operating software can be provided according to the user's requirements, and the operation is simple and easy to understand.

12. The computer software has a database system, which is convenient for querying and printing measurement data, and can also transmit data remotely through the network, which is convenient and quick.

13. Each system is independently powered and composed of units, which is easy to use and easy to maintain.

14. The optical part adopts constant temperature measures, which reduces the environmental requirements and ensures the normal operation of the instrument.

15. High-precision German imported linear motor for seam scanning, fast speed and high precision.

16. The overall exit slit is used to facilitate the addition of channels.

Technical Parameters:

Vacuum optical system

Lower limit of detection: 1ppm

Grating focal length: 750mm

High-gloss concave holographic grating: 2400 strips/mm

Spectral range: 200nm~680nm

Dispersion rate: first-order dispersion rate = 0.55 nm / mm

2. Secondary dispersion rate = 0.275 nm / mm

Resolution: better than 0.01nm

Maximum detection channel: 62

Optional line: 240

3. Line

Each strip to be tested corresponds to a slit

Use integral seaming technology to ensure consistency of all elements

High performance photomultiplier

a mirror (depending on the position of the PMT)

The high voltage of the photomultiplier tube is adjustable

According to the analysis requirements, the number of channels in an optical system can be increased to 62

4. Control and data acquisition electronics unit

64-bit analog-to-digital conversion microprocessor

5. Negative high pressure

Software adjustable, independent high precision negative high voltage module, negative high voltage accuracy <0.05%.

The negative high pressure has analytical program control, which improves the analysis accuracy of the analysis program and expands the analysis range of the elements.

6. Spark excitation source

Discharge parameters are protected by password

Spark source discharge is stable, not affected by fluctuations in the power supply system, with magnetic saturation power supply

High energy pre-ignition spark technology up to 800Hz

Adjustable parameters such as source frequency energy

7. Automatic trace

The newly designed automatic tracing system is fast and accurate, which greatly improves the efficiency of instrument analysis and reduces the difficulty of operation. It provides automatic and manual tracing switching function, and the one-time tracing seam fills the domestic blank, patented technology.

8. Spark table

The new unique design open spark table measures 140mm x 120mm, and the analytical sample weighs up to 8Kg

Safety equipment prevents unsafe fire

The newly designed coaxial spark table uses an optimized internal gas path, which greatly reduces the consumption of argon, reduces the residual metal dust inside the spark table and improves the stability of the instrument analysis data.

Lens thermostat system to prevent lens fogging

9. Vacuum system

The newly designed casting light chamber has a very low thermal expansion coefficient, which greatly improves the stability of the instrument.

Vacuum is controlled by vacuum pump and vacuum control equipment

Adsorption well

The new suspension vacuum pump isolation valve has no circuit design, is stable and reliable, and prevents the vacuum pump oil from being poured into the light chamber.