DW-W4 Optical Emission Spectrometers (Arc/Spark-OES) Economical and Easy Metal Analyzer

Scope of supply

1. Supply list

No.	Item	Specifications	QTY	Unit	Remarks
1	Optical Emission Spectrometer	DW-W4	1	Set	Include in quotation.
2	Business computer		1	Set
3	Printer		1	Set
4	Tungsten electrode		1	Pc
5	Electrode pressure spring		1	Pc
6	The electrode fixed screw		2	Pcs
7	Electrode brush	Φ6	2	Pcs
8	Lens holder sealing ring	Φ16×2.65	2	Pcs
9	Lens holder sealing ring	Φ72×2.65	1	Pc
10	Exhaust gas filter core		1	Pc
11	Degreasing cotton		15	G
12	Power socket		1	Pc
13	M2 Internal hexagonal wrench		1	Set
14	M4 Internal hexagonal wrench		1	Set
15	Long handle phillips screwdriver		1	Pc
16	13－15 fixed wrench		1	Pc
17	Spark machine screw	M6	4	Pcs
18	Fuse	10A	2	Pcs
19	Argon gas pressure reducing valve		1	Pc
20	Argon gas pipeline		2	M
21	Exhaust pipe		1	Pc
22	Gas bottle		2	Pcs
23	Print paper		1	Pc
24	Spectrometer manual		1	Set

Notes: The Buyer knows and agrees that the Seller may adjust the supply when the production of the above-mentioned instruments, spare parts and other suppliers change due to technological progress, product upgrading, market changes, etc.

2. Optical items

Optional item	Qty	Note
High purity argon gas (pure ≧ 99.999%)	1 bottle	Should prepare by customer. If can’t get should use argon purifier to get 99.999% argon gas.
Small air conditioning	1 set	Essential, customer should prepare by themselves.
High precision magnetic saturation voltage stabilizer (1KVA)	1 set	Need for voltage instability, if the customer uses intermediate frequency furnace, then need 3KVA Voltage Stabilizer
Argon purifier	1 set	When argon gas is not as pure as 99.999%.
Samples grinder (ferrous metals) or Mini lathe (non-ferrous metals)	1 set	Essential
Type samples	pieces	Essential for foundry

Analytical Program

The analysis ranges and elements of Al base
		Al-000	Al-001	Al-002	Al-003	Al-004	Al-005
No.	Elements	GlobalProgram	Al Low Alloy	Al-Si Alloy	Al-Zn Alloy	Al-Cu Alloy	Al-Mg-Si Alloy
1	Si	0.01-24	0.01-1.63	0.02-24	0.02-9.4	0.02-7	0.02-2.3
2	Fe	0.01-4	0.01-1.65	0.02-4	0.03-1	0.05-1.9	0.07-0.80
3	Cu	0.002-13	0.002-1	0.005-6	0.01-4.3	0.01-13	0.07-1
4	Mn	0.001-2.4	0.001-1	0.005-1	0.02-1	0.05-1	0.03-2.4
5	Mg	0.002-10.2	0.002-1	0.01-1.5	0.01-4	0.01-2.7	0.006-10.2
6	Cr	0.001-0.5	0.001-0.15	0.005-0.5	0.01-0.4	0.01-0.14	0.01-0.4
7	Ni	0.001-2.5	0.001-0.16	0.02-2.5	0.01-0.2	0.01-2.3	0.005-0.25
8	Zn	0.002-12	0.002-0.5	0.005-3.5	0.01-12	0.05-3.5	0.01-1
9	Ti	0.001-0.4	0.001-0.15	0.005-0.4	0.005-0.3	0.001-0.2	0.007-0.3
10	Cd	0.001-0.3	0.01-0.3	0.001-0.3	0.002-0.3	0.01-0.3	0.01-0.3
11	Pb	0.001-0.5	0.02-0.5	0.005-0.5	0.005-0.5	0.01-0.5	0.001-0.5
12	Sb	0.005-0.4		0.005-0.4
13	Sn	0.005-0.5	0.01-0.2	0.003-0.5	0.005-0.2	0.02-0.3	0.007-0.2
14	Sr	0.005-0.1		0.005-0.1
15	V	0.002-0.2	0.004-0.05	0.005-0.2	0.005-0.03	0.01-0.03	0.002-0.03
16	Zr	0.001-0.3	0.001-0.12	0.005-0.2	0.01-0.3	0.001-0.2	0.003-0.12
17	p	0.002-0.005		0.002-0.005
18	Al	Reference	Reference	Reference	Reference	Reference	Reference

No.	Elements	Brass
1	Zn	0.5-43.0
2	Pb	0.01-6.0
3	Sn	0.009-4.8
4	P	0.002-0.14
5	Mn	0.001-5.3
6	Fe	0.02-3.0
7	Ni	0.009-1.8
8	Si	0.001-4.6
9	Mg	0.001-0.01
10	Cr	0.001-0.2
11	Co	0.004-0.1
12	Al	0.001-6.7
13	S	0.001-0.15
14	Cu	Reference

Note:

The instrument is calibrated with limited standard samples which Chongqing Drawell Instrument Co., Ltd. have for general purpose. For special alloy and special elements, the instrument must be calibrated by customer themselves. Or if customer is willing to provide sample collaboration for program development, the customer must provide accurate sample element content tables and ensure sample uniformity, but such curves are not used as acceptance indicators of the instrument.

Technical Data of DW-W4

1. Parameter

Item		Index
Optical System	Focal Length	350mm
	Wavelength range	165nm-589nm(extendable)
	Detector	High resolution CMOS Multi detectors
	Light chamber	Argon cycle filling
	Pixel resolution	30pm
	Grating line	3600m1/mm
	First order spectral line dispersion rare	1.2nm/mm
	Average resolution ratio	10pm/pixel
	Full spectrum
	Light chamber temperature is controlled automatically
Spark Source	Type	Digital arc and spark source
	Spark frequency	100-1000HZ
	Discharge current	1-400A
	Ignition voltage	>15000V
	Excitation light	Optimization of discharge parameters design
		High energy precombustion technology HEPS
	Processor	High-speed data synchronization acquisition and processing
Spark Stand	Electrode	Tungsten electrode technology
	Make up	Thermal deformation self-compensation design
	Argon flushed with minimal consumption of Argon
	Spray discharge electrode technology
	Adjustable electrode technology
Others	Measurable elements	Fe、Al、Cu、Ni、Ti、Co、Zn、Sn、Mg、Pb  etc
	Dimension	714mm(L)*558mm*270mm(H)
	weight	About 40kg
	Storage temperature	0℃-45℃
	Operating temperature	10℃-35℃, 23±2℃ is recommended
	Power	AC220V/50Hz(Customized)
	Power consumption	Excitation:400W/Stand by:50W
	Argon quality	99.999%, Argon pressure>4Mpa
	Argon consumption	5L/min during spark mode
	Interface	Ethernet data transmission based on DM9000A

2. Main features

The DW-W4 optical emission spectrometer has a number of patented technologies that enable rapid determination of elements in metallic materials. The optical system uses a CMOS detector with a spectral range covering all typical materials. It is accurate and reliable for analysis from low-level elements to high-level elements. For different materials and different requirements, the cost-effective full-spectrum direct reading spectrometer can meet the requirements of metal manufacturing, processing industry and metal smelting for quality monitoring, material identification, material research and development.

1. Optical system with superior performance

• The Paschen-Longge structure concave grating, full spectrum coverage, meets the customer’s need for full element detection.
• Direct optical technology and use optics made with MgF materials ensure optimum performance in the UV region.
• High resolution multi-CMOS readout system, lower dark current, better detection limit, higher stability, stronger sensitivity, meet N analysis requirements.

2. Large energy digital spark light source

• Fully digital intelligent composite light source DDD technology brings superior analytical performance.
• The compact design and semiconductor control technology make the light source more stable and more reliable.
• High-energy pre-combustion technology(HEPS), spark parameter adjustment, fully meet the excitation requirements of different substrates, different samples and different analytical elements.

3. Humanized sample spark stand design

• The spark stand directly introduces the spark light into the optical system
• Open sample stage for large sample testing requirements.
• Change electrodes provide better performance for small sample and complex geometry samples

4. Simple argon flow design

• Intelligent argon flow design and dust collection and cleaning device
• The unique argon jet technology effectively eliminates the drift of the plasma during the spark process, ensuring that the CCD detector can observe the high-temperature regional light signal, improving accuracy and stability.
• After sparking, pulsed argon purge improves dust removal and improves instrument short-term and long-term stability.

5. Fully intelligent vacuum measurement and control

• The vacuum system is fully programmed to reduce the running time of vacuum pump while ensuring the vacuum.
• The two-stage setting turns on the standby vacuum operation state when the instrument is not running.
• Multi-stage vacuum isolation measures and the addition of oil filter devices ensure that optical components work in a reliable environment.

6. Convenient and quick lens cleaning device

• The integrated vacuum ball valve has good isolation when cleaning the lens.
• Single-plate lens design, easy to assemble and disassemble.
• Cross-mechanical devices, the optical system is effectively protected without isolation.

7. Cloud computing and reading system

• The computer and mobile phone (or PAD) can be displayed simultaneously for easy panel operation.
• High resolution multi-CMOS readout system and FPGA, DSP and ARM technology for data acquisition.
• Ethernet and TCP/IP protocols, data transmission is fast and reliable.
• Data can be transmitted remotely and fully networked. Real-time monitoring and control of the operating state of the instrument.
• Data can be cloud printed.

8. Dedicated spectral analysis software

• The international spectrometer produces a standard dedicated spectrometer software with user-friendly interface and standardized functions.
• The instrument is equipped with multiple factory calibration curves and more material analysis methods and advanced solutions in the software.
• The upper and lower limits of the standard curve can be extended on site according to the material requirements of the user.

9. The instrument and software computing power is powerful

• Automatic optical path calibration
• Low argon consumption
• Universal adjustable sample adapter
• Base extension
• Standardized parameter modification
• Type standardization function
• Safer, more open and convenient design
• The result is displayed in real time, and the print report function can be customized for the user.
• Software rapid diagnosis
• Simple interface operation
• Reliable factory calibration