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Ux-820A

Ux-820A

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产品名称

Ux-820A

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产品描述

Function and principle

Function Description

It is mainly used for rapid nondestructive detection of heavy metal elements such as cadmium (Cd) lead (Pb), As (arsenic), chromium (Cr) and selenium (Se) in rice, wheat, brown rice, soybean, tea and other crops. There is no need to chemically pretreat samples, powder and granular samples can be tested directly and samples can be quickly screened in minutes.

Technical principle

After the sample is irradiated with X-rays, the electrons in the inner shell of the element are excited to cause an electronic energy level transition, and the characteristic X-ray fluorescence of the element is emitted. Qualitative and quantitative analysis of the elements can be performed by measuring the wavelength and intensity of the sample, emission characteristic X-ray fluorescence. Taking into account the measurement accuracy and efficiency, the test can be adjusted to the fast screening mode and the accurate measurement mode by setting test conditions such as test time.

 

Product features

1. The instrument is easy to operate, no sample pretreatment, no consumables, and can be used for rapid qualitative and quantitative analysis of Cd in rice and other cereals.

2, the fuselage full lead plate protection, fully guarantee the personal safety of the operators.

3. Within 120 seconds, the Cd element limited value of 0.2ppm in rice can be screened, and the precise quantification can be completed within 1200 seconds. The sample weight is about 8g.

4. The sample number is identified by the two-dimensional code, and the automatic sample changer does not need to place the sample in the order of number.

5, the hardware has a linkage device - permission security lock, even if the software fails, the device can be controlled to ensure the personal safety of the device during use.

 

The UX-820A also has the following features:

1. The auto-changer has dual operation modes of “sample placement in sequence and test function mode” and “sample disorder placement and test function mode”.

The QR code information is not scanned in the order of number and in the test function mode, so it is not necessary to print the QR code sticker.

2. Sample spin function: The sample rotates automatically during the test, which can effectively reduce the test deviation caused by uneven sample preparation.

 

Test capability

Test element

The detection limit(mg/kg)

Analysis accuracy (RSD)

Linear range(mg/kg)

Cd

≤0.04

≤5%

0.04-3.0

Se

≤0.05

≤10%

0.05-3.0

As

≤0.08

≤10%

0.05-3.0

Pb

≤0.1

≤20%

0.1-3.0

Cr

≤0.15

≤20%

0.15-3.0

 

 

Test grain

Test element type

Testing time

Quick check

Rice, brown rice, rice, wheat, corn, tea, tobacco, Chinese medicine, etc.

Cd、Pb

180s

Precise detection

Cd、Se、As、Pb、Cr

600S

 

Grain heavy metal screening analysis method

 

Radiation safety

The device has no radioactive leakage during use. Radiation protection is better than the international "X-ray diffractometer and fluorescence analyzer health protection standard GBZ115-2002".

(1) Cover protection Safety measures: When the test or X-ray tube is working, open the cover, the instrument should immediately interrupt the X-ray tube to avoid diffraction leakage.

(2) Radiation level There is a hardware design that guarantees no ray leakage. The radiation level at work is much lower than the national safety standard, and there is no radiation leakage during testing

(3) Hardware linkage protection Hardware linkage device can control the device in case of software failure to ensure the personal and environmental safety of the device in use

 

Product specifications:

Detector: Original integrated package detector, energy resolution: ≤ 129eV

High-voltage power supply: high-precision digital control high-voltage power supply, high voltage & ge; 65kV, power & ge; 100W, 8 hours stability & nbsp; 0.05%

X-ray tube: high quality air-cooled side window X-ray tube, tungsten target light tube, ≥ 65kV

Autosampler: 88-position autosampler

Sample cup: Recyclable

Test chamber: The test chamber cover is automatically opened and closed without manual opening and closing to ensure the safety and operation of the tester

Product dimensions (deep & times; wide & times; high): 550 mm & times; 470 mm & times; 720 mm

Product weight: about 50kg

Working voltage: AC 220V & plusmn; 25V

Working current: rated <1A, no more than 2A

Environmental adaptability: Temperature: -15 ° C ~ 30 ° C; Humidity: 0% RH ~ 85% RH

 

Application range

It is mainly used for rapid non-destructive testing of heavy metal elements such as Cd, Pb, As, Cr and Se in rice, wheat, brown rice, soybean, tea and other crops.

There is no need to chemically pretreat samples, powder and granular samples can be tested directly and samples can be quickly screened in minutes. Up to 88 samples can be tested automatically and continuously.

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