DW-W6 Optical Emission Spectrometers (Arc/Spark-OES)

Scope of supply

1. Supply list

No.	Item	Specifications	QTY	Unit	Remarks
1	Optical Emission Spectrometer	DW-W6	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

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.

If the customer has type sample demand, the type sample number can be provided, and the customer can purchase the type sample by himself; if the salesman buys the type sample on behalf of the salesman, the type sample will be shipped separately by Chongqing Drawell.

Technical Data of DW-W6

1. Parameter

Item		Index
Optical System	Focal Length	400nm
	Wavelength range	165~589nm (Extendable)
	Detector	High resolution CCD Multi detectors
	Degree of vacuum	Auto control within 6-20 pa
	Pixel resolution	30pm
	Grating line	2400m1/mm
	First order spectral line dispersion rare	1.2nm/mm
	Average resolution ratio	10pm/pixel
	Full spectrum
	Light room 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	650mm(L)*860mm*1200mm(H)
	weight	About 235kg
	Storage temperature	0℃-45℃
	Operating temperature	10℃-35℃, 23±2℃ is recommended
	Power	AC220V/50Hz(Customized)
	Power consumption	Excitation:750W/Stand by:100W
	Argon quality	99.999%, Argon pressure>4Mpa
	Argon consumption	5L/min during spark mode
	Interface	Ethernet data transmission based on DM9000A

2. Main features

1. Optimized vacuum optics system ⑴ Integrated optics room and Paschen Runge construction design, making all the spectrum lines focused on the gratings. ⑵ Direct-jet type optics technology and MgF2 material lens to make sure ultraviolet wave′s best energy of elements, such as C,S, P and N.
2. Full Digital Inspire Light Source (1) The system uses the most internationally-advanced plasma inspire light source, and generates ultra-stable energy release to excite samples in the environment filled with argon gas. ⑵ Full Digital Inspire Light Source ensures ultra-high resolution and high-stability output rate of plasma in the excitation samples. ⑶ Full Digital Inspire Light Source can satisfy inspire requirements for different type of materials.
3. Functional design excitation device Integrated gas lines, Jet type electrode technology and opened copper spark platform not only can insure the samples’ measuring precision but also cater to different shapes’ samples.(Including wire materials) Single plate lens equipment design is easy to user for washing and maintaining the excitation platform and lens.
4. Unique argon gas supply system New integrated gas circuit module for the argon system and spark argon flow design significantly improve the ability of argon gas cleaning metal dust, built-in thermal argon supply device, ensure to achieve the best excitation condition and the stability of the stimulating environment. Ensure the stability of the data.
5. Advanced vacuum system Adopted the new vacuum chamber system design, light in the instrument non-working state does not require real-time optical chamber of argon purging, greatly reduces the usage of argon gas, saving the cost of the customer use.Adopt international standard vacuum unit, maximum limit to ensure the safety of the vacuum system, to ensure low ultraviolet (VUV) spectrum signal has very good performance. Instrument for real-time monitoring the working state of the vacuum chamber of light.
6. Highly integrated and direct reading system ⑴ Flexible sample clamp design of Open-Access Excitation Stand satisfies user on-site analysis of samples with different sizes and shapes ⑵ The small sample clamps in cooperative use can make the analytic precision of wire rods achieve 1.5 mm at the minimum.
7. Visual and easy-operate analysis software The multi-language CCD full spectrum analysis software, which based on the WINDOWS system, provides powerful data processing ability and testing report output capacity for users under the whole management and controlment of the measuring process. The apparatus equips many factory calibration curves and many materials to the more advanced solution methods. The apparatus realizes the full spectrum analysis of intelligent jammer, dark current, the algorithm of appearing and disappearing faces, highly improving the analysis ability of testing machine.

Guarantee & Service

1. Technical documents and software

• 1.1 Drive and application software installation CD
• 1.2 User manuals
• 1.3 Daily maintenance sheet

2. Installation

The Seller’s professional technicians will install the instruments and training the users within 2 to 3 workdays for free.

Commissioning will be taken before acceptance. Both parties should sign the acceptance report after the instrument reaches all the technical data prescribed in this agreement.

3. Acceptance

The Buyer should acknowledge receipt of goods after checking them against the list shown in the agreement. After the instrument runs steadily at least 24 hours, the testing results should be reached the technical data by using the homogeneous national or international first grade CRM.

4. Training

Installation Engineer in the field installation and commissioning process, the Buyer shall organize the relevant users and maintenance responsible person to receive on-site training, training time generally not more than 3 days. Through training, so that the relevant personnel more in-depth understanding of spectral analysis related technologies, skilled in instrument operation and maintenance.

The training includes instrument installation, commissioning, testing samples, testing user’s samples, training lab operators about equipment theory, daily operation, software application, daily maintenance and repair, to make sure that users can operate the instrument properly.

5. After-sales service

5.1 The calculation of the warranty period

● The warranty period of the instrument shall be in accordance with the contract stipulations.

● If the contract does not specifically point out that the warranty shall be implemented in accordance with the following terms:

The warranty period shall be 12 months from the date of acceptance of the goods or 12 months from the date of receipt of the goods by the buyer, whichever comes first.

The general fragile parts (such as mouse, ordinary keyboard, etc.) are guaranteed for three months from the date of the factory.

The warranty period for external parts (PC, printer, stabilized power supply, etc.) is subject to the manufacturer’s requirements.

The repair period is three months.

Consumables (filter cotton, electrode brush, etc.) are not guaranteed.

● If the quality problem of the instrument is affected, the warranty period will be postponed accordingly.

5.2 During the warranty period, the equipment will be repaired free of charge if it breaks down in normal use. However, due to the buyer’s operation or maintenance personnel’s mis-operation or improper use and force majeure factors (war, earthquake, lightning strike, flood and so on), the seller will charge cost and maintenance fees.

5.3 After the instrument has been repaired, the seller confirms the malfunction by telephone and solves the problem. If the problem needs to be solved on site, the seller can rush to the site within 48 hours.

5.4 Maintenance beyond warranty period:

Over the warranty period, the seller will continue to provide maintenance services and use of consultation, if need to go to the customer site service, the Seller will properly charge parts fees, service fees and other fees.

5.5 Spare parts and consumable supplies: the seller will supply spare parts and consumables to the buyer at a favorable price.

Installation & Training

After the seller received the buyer’s instrument installation notice, sent to the user’s site for installation and debugging. It’s totally free. The buyer only bears our engineer round airfares and local accommodation (Including the VISA cost).

1. Installation Conditions see Attachment 1 and Attachment 2.
2. After the instruments have arrived at your esteem company, warehouse storage, warehouse temperature 0 ~ 30 ℃, relative humidity is not more than 75%, after waiting for installation personnel arrived, mutual unpacking, counting number according to the packing list.
3. Use the standard sample which is bought by your esteem company for instrument acceptance at the scene and check the analysis precision. Or if the customers don’t know the standard samples at all, we company can help customer buy from China and ship together with the machine.
4. After installation and debugging, it must be paid to return if the quality can’t meet the technical requirements. If only individual elements analysis deviation is slightly larger, mutual analysis reason, through friendly consultation.
5. The training includes how to use the instrument, daily maintenance, software operation.
6. After installation completely, Engineers need to complete an installation acceptance report, and on behalf of the signature or stamp by both parties.
7. Warranty period in accordance with the contract to perform

Attachment 1 Installation conditions should be prepared by buyer.

1. Space: The optical room and sample prepare room should separately. In order to operate convenient, please leave 1 meter space around the instrument.
2. Prepare two bottles of high purity argon gas, the purity should be more than 99.996%.
3. Spectrometer access side should be equipped with power protection, air switch, over-current protection of the 20A
4. Independent special ground, ground resistance is less than 1 ohm, grounding body with 38 ~ 50 mm diameter copper bar, its length is 2.1 m, the method of making the ground see the attachment.
5. According to the space of the laboratory, it should be equipped with air conditioner.
6. Equip with a double disc grinding prototype or a floor grinder, mill Φ 350 mm diameter, used in steel specimen surface polishing, generally need 40-60 mesh. If the sample is non-ferrous metals, need a small lathe to sampling.
7. In order to ensure the argon gas purity, need to configure an argon gas purifier. If the purity is more than 99.999%, it will not be necessary.
8. The standard sample should be prepared by the user. It is used for the calibration function.
9. Equip with a high precision regulated power supply if it is before the furnace analysis or harmonic interference.

Note

• Spectrometer power supply system should be separate with high power electric equipment (such as the power of the medium frequency furnace and its frequent start-stop devices).
• Stay away from high-power electrical appliances at least 50 m or so.
• Spectral laboratory dustproof effect should be good.
• Spectral instrument avoid single heat or direct sunlight.

Attachment 2 The installation of ground wire method

Grounding resistance requirement

(1) Resistance<2Ω

The value of the grounding resistance can define the value of earth current. If grounding electric resistance is smaller, the grounding device of grounding voltage value will be smaller. That is to say, the value of the grounding resistance has marked the equipment grounding performance is good or bad.

Resistance measurement

Grounding resistance is generally measured by ammeter, voltmeter, bridge method, grounding resistance measuring instrument etc. At present it is measured by grounding resistance measuring instrument. This method is simple and convenient. Common grounding resistance measuring instrument is the type of ZC – 8 and ZC – 29. Before the grounding resistance test, it should unscrew the ground down lead first.

Installation

Generally speaking, a ground wire buried depth should not be less than 2 m. Installation of grounding in special places, if the depth of less than 2 m should be placed around the grounding salt 5 kg, wood carbon about 10 kg and add water, to reduce the grounding resistance. If you use a minimum of 2 and 2 root of grounding, the distance between each pole should not be less than 2.0 m, in order to reduce the diaspora of the earth resistance. In strong corrosive soil, it should use plating of copper or galvanized grounding electrodes. And grounding shall not be buried in the garbage and ash layer, laying on the ground and the ground is extremely should not be painted, in order to avoid the grounding resistance is too big.