Lab Visible Digital Spectrophotometer 721 LCD 350-1020nm Accuracy ±2nm US

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Lab Visible Digital Spectrophotometer 721 LCD 350-1020nm Accuracy ±2nm US
Product Description
Product description:
The product is an economical analytical instrument with RS232 (not included) interface output. Excellent metering accuracy is higher than that of the same instrument. It is widely used in medical testing, food, petrochemical industry, environmental protection and monitoring. field.
★ Digital display measurement value
★Automatic light door, automatic zero adjustment and 100 instrument calibration
★Use original imported tungsten lamp to ensure the service life of the instrument
★ Large sample room, can hold up to 10cm cuvette
★Optional output port RS232, which can connect printer and connect computer function
Product specifications:
Optical system: achromatic Czerny-Turner (1200L / mm grating)
Wavelength range: 350-1020 nm
Wavelength accuracy: ±2nm
Spectral bandwidth: 6nm
Wavelength repeatability: ≤1nm
Stray light: ≤0.1%T @ 360nm
Photometric accuracy: 0.5% T
Photometric repeatability: 0.2% T
Drift: ≤0.2%T
Noise: ≤0.3%T
Stability: ±0.004A / h@500nm
Working mode: T, A, C
Zero mode: automatic
Wavelength drive mode: manual wavelength
Print interface: optional RS232 (not included)
Energy (light source): tungsten lamp
Weight: 10 kg
The package includes:
1 x visible spectrophotometer
1 x power cord
1 x glass cuvette
1 x instruction
Precautions:
1. The instrument should be placed in a dry room. When used, it should be placed on a firm and stable workbench. The indoor lighting should not be too strong. In the hot weather, you can not use the fan to blow directly to the instrument to prevent the bulb filament from becoming bright and unstable.
2. Before using the instrument, the user should first understand the structure and working principle of the instrument, as well as the functions of each control knob. Before the power is turned on, the safety performance of the instrument should be checked. The power supply wiring should be firm and the power supply should be good. The starting position of each adjustment knob should be correct, and then press the power switch.
3. When the instrument has not been powered on, the meter pointer must be on the “O” engraving line. If this is not the case, you can adjust it with the calibration screw on the meter.
Instrument maintenance:
1. Temperature and humidity are important factors affecting the performance of the instrument. They can cause corrosion of mechanical parts, reduce the smoothness of the metal mirror surface, cause errors or performance degradation of the mechanical parts of the instrument; cause optical components such as gratings, mirrors, focusing mirrors, etc. The aluminum film is rusted, resulting in insufficient light energy. Stray light, noise, etc., even the instrument stops working, thus affecting the life of the instrument. It should be regularly corrected during maintenance. It should have an instrument room with four seasons and constant humidity, and be equipped with constant temperature equipment, especially ground. Laboratory in the southern region
2, dust and corrosive gases in the environment can also affect the flexibility of the mechanical system, reduce the reliability of various limit switches, buttons, photoelectric couplers, and also cause one of the reasons why the aluminum film corrosion of the components must be learned. Clean, protect the environment and the indoor sanitary conditions of the instrument, dustproof
3. After the instrument has been used for a certain period of time, a certain amount of dust will accumulate inside. It is best to start the dust removal work by the maintenance engineer or the engineer under the guidance of the engineer, and re-tighten the radiator of each heating element. The sealed window of the box is cleaned. If necessary, calibrate the optical path, clean the mechanical parts and necessary lubrication, and finally, restore the original condition, and then perform some necessary tests, adjustments and records.
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Payment must be received within 7 days after order is made.
Fees such as import duties, taxes are not included in the item price or shipping costs. These charges are the buyer's responsibility.
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Shipping:
The item will be shipped from our US warehouse to United States, which is more faster than from aboard.
2-9 working days to: USA
Terms of sales
We maintain high standards of excellence and strive for hundred percent customer satisfaction. Feedback is very important to us. We hope that you contact us immediately before you give neutral or negative feedback, so that we can address your concerns. It is impossible to address issues if we do not know about them!
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Your satis
faction is our ultimate goal. We work hard to earn your trust and future business. Our certified technicians have tested each item before shipping. The unit comes with 1 year limited warranty on all manufacturing defects.
a) If you receive a defective item, you may return it or ask for a discount. Please contact us within 14 days after you receive the package.
b) What you returned must be intact and in its original packaging as re? u. Customer is responsible for shipping costs of the returned item.
c) We will cover the cost of shipping back t with the shipping rate indicated in the registration page. We will send you a new unit or refund the full payment you paid.
Thank you.
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Business Hour
Business Hour: Monday To Friday: 8:30 AM to 5:00 PM (Beijing China time)
Due to time zones, our reply to your questions may not be immediately. But within above working time, we will reply your email within 24 hours. If it's non-workdays, please kindly be patient and wait till Monday.
Please contact us with ebay message.
Please feel free to contact us if you have any questions.
: Monday To Friday: 8:30 AM to 5:00 PM (Beijing China time)
Due to time zones, our reply to your questions may not be immediately. But within above working time, we will reply your email within 24 hours. If it's non-workdays, please kindly be patient and wait till Monday.
Please contact us with ebay message.
Please feel free to contact us if you have any questions.
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Shipping
Return policy
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On Jun-20-21 at 20:30:20 PDT, seller added the following information: