Online Paper Moisture Tester Parameter Introduction and Precautions

Online paper moisture tester is widely used in paper, coal, milk powder, wood-based panels and other industries to detect products on the production line in real time. Due to the production process and process requirements, online monitoring of the moisture content of products has become an important link. The online paper moisture tester uses the principle of infrared light diffuse reflection to detect the moisture content of products, and transmits the real-time moisture data to the video to provide guidance on detection parameters for the technical department. The moisture content of paper is about 5% or 6%, and if it is required to be preserved, the moisture content of paper needs to be controlled at 3%-4%. The online paper moisture tester has accurate measurement accuracy and good product quality and stability. It has been recognized and praised by customers in the industry and conquered many companies with its affordable prices.

Precautions for using infrared online paper moisture tester:

Online moisture meter infrared lamp diameter 8cm  

Light source irradiation thickness: 5mm 3cm tube hanging aperture (insulation)

3. Check if a glass cover is installed: the glass should be of normal light transmittance, with a 20-degree angle to the light source, and should not be installed vertically

4. Operation setting SET zero value description: Set SET up + SET1 channel number SET1-10 SET positive and negative switch

SET1: Zero value Distance from material: 25cm _+5cm The data is most stable

Set SET 2 = (actual - display) + now SET2

Example: Displayed 5.6 Actual 4.9 Now SET2 -4.5

New SET2 = (4.9-5.6) + (-4.5)

=-5.2

Online Paper Moisture Tester Application Range:

It can be used for online determination of moisture content of materials in mining, coal and other industries.

The infrared moisture meter adopts grating type infrared moisture meter, which has much higher stability than six-beam and eight-beam meters. The average test accuracy can reach about 0.1%-0.5% (depending on the material being tested), which meets the production process requirements.

The traditional method of measuring the moisture content in materials is the oven method, which has the disadvantage of taking a long time to operate. In addition, the information is seriously delayed, so this method cannot be applied to the production line and can only be used in the laboratory. The infrared paper moisture meter can measure quickly and continuously on the conveyor belt without contacting the measured material, realizing online dynamic real-time detection, with a response time of only 8ms, realizing real-time control of the moisture content of the product.

Features:

1. Non-contact, using infrared technology to measure moisture in a slow reflection manner

2. Multi-channel setting: the same instrument can meet the needs of measuring different types of materials. The QL series online paper moisture tester has 10 channels, numbered from 1 to 10. Each channel number represents a set of the above channel parameters. Changing the channel number means selecting different channel parameters to meet the needs of measuring different types of materials with the same instrument.

3. It is basically not affected by external light changes, has automatic temperature compensation, and is basically not affected by external temperature changes. It has good long-term stability

4. Simple installation, convenient and fast operation

5. The installation and commissioning of the instrument only takes a few days, and the normal production will not be affected during the installation and commissioning. The QL-300 series moisture meter adopts pre-calibration, and the calibration work can be completed on site by simply correcting the intercept (zero position). The instrument uses a single-chip microcomputer for digital calculation and a simplified touch-type operation, which is very suitable for general operators.

6. Moisture error measurement range: 0.01%-100%

7. Moisture accuracy: ±0.3%

Principle of infrared online paper moisture tester:

1. The hydrogen-oxygen bonds in water molecules absorb near-infrared rays of a specific wavelength (specific measurement band 1.94μm). At a specific wavelength, the energy of the reflected near-infrared rays is inversely proportional to the energy of the near-infrared rays absorbed by the water molecules in the material. The moisture content of the measured material is calculated based on the amount of energy loss.

2. When water molecules are excited by a specific energy band and become in a vibrational state, the hydrogen-oxygen bond between the two hydrogen atoms and one oxygen atom in the water molecule will stretch, shrink, or distort in other forms. The energy that can make water molecules vibrate covers a specific band of the entire electromagnetic spectrum. In different parts of the entire spectrum, some absorption bands are very strong, and some absorption bands are very weak. In the near-infrared part of the spectrum, this band is particularly strong for water molecules, and the instrument is easier to achieve in terms of emitting, filtering and receiving energy.

3. Near infrared measurement technology is a non-destructive, non-contact real-time measurement technology.

The online paper moisture tester probe is an intelligent device that performs all system measurement and processing functions internally and directly outputs calibrated measurement values. It can also generate display content on microcomputers and touch computers.

Online Paper Moisture Tester Features:

1. Highly integrated electronic devices, SMT technology circuit boards, and output interfaces reliably and effectively reduce possible failure points, with stable and reliable quality

2. Dynamic real-time diagnostic system, no need for regular maintenance

3. Built-in cooling system can be added

4. Can add built-in product temperature measurement system

5. High sensitivity: None

6. Sensitivity to material color/formula: Minimum, better applicability.

7. The filters are smaller than those designed by traditional brands and are less affected by bandwidth.

8. The stainless steel shell is used to prevent corrosion and water vapor and dust.

9. The power supply and digital signal output are separated from the host, which avoids the output signal of traditional brands being affected by the internal temperature of the probe and causing signal instability.

10. More output signal modes, including two sets of RS485 output and two sets of 4-20mA analog signal output.

Online Paper Moisture Tester Specifications:

Measuring range: 0-95%  

Measurement accuracy: ±0.2%-±0.01%. (value)

Resolution: 0.001%.

Light spot: diameter 60mm

Measuring speed: 0.0125 seconds

Calibration and adjustment: quick calibration, pre-calibration, no need for daily re-calibration

Filter time: linear or exponential (0.1-180 seconds)

Analog output: two sets of 4-20mA output

Communication mode: RS232, RS485, Modbus, TCP/IP

Calibration files: 31 calibration files can be stored

Working temperature: -10--80℃

Working distance: 150-400mm

Dimensions: 130X149X277mm

Weight: 5KG

Working power supply: 24VDC/35VA

Equipment protection: Stainless steel housing (IP65 protection grade)

Cleaning and purge interface: purge port diameter 6mm, compressed air 0.25MPa 

Online paper moisture tester application areas:

Steel industry: sintering mixture, pelletizing raw materials, before and after drying, pelletizing, etc.

Non-ferrous metals: bauxite, copper concentrate, mineral sand, nickel ore, gold, silver, lead and zinc concentrate, alumina and non-ferrous smelting, etc.

Tobacco industry: cigarette packs, tobacco stems, tobacco leaves, tobacco shreds, redried tobacco, tobacco branches, etc.

Grain industry, food processing, ceramic industry, glass industry, cement industry, pharmaceutical industry, chemical industry, wood industry, paper industry, etc.