Noise meter
The noise detector can be used as a teaching equipment for extracurricular environmental monitoring activities in primary and secondary schools. Mainly used for measuring environmental noise, conducting noise engineering, quality control, and health prevention and control. Used for measuring noise volume in various occasions such as factories, offices, transportation roads, audio systems, homes, as well as air conditioning, refrigerators, etc.
This instrument is a high-precision noise measuring instrument, which uses LCD display and has an accuracy of ± 1.5dB. Equipped with power on self-test, self
The automatic shutdown function will automatically shut down the instrument after 20 minutes of standby, reducing power consumption.
Technical indicators
1. Measurement range: 40dB to 130dB.
2. Resolution: 0.1 dB.
3. Measurement error: ± 0.1dB.
4. Display features: display of numbers and bar barcodes.
5. Has fast and slow response switching function.
6. Equipped with A and C weighting function (displayed in small letters on the middle right).
7. Has maximum value locking function.
8. It has undervoltage display function (the small text in the bottom left corner of the display screen is BAT).
9. It has an automatic shutdown function.
10. The digital display refresh time is about 160ms, and the chart display refresh time is about 40ms.
11. It has the function of switching between automatic range and manual range measurement (the small text in the upper left corner of the automatic range display screen shows AUTO, and the small text in the upper left corner of the manual range display screen shows MANU)
12. Manual range measurement grouping display: 40dB~70dB, 60dB~90dB, 80dB~110dB, 100dB~130dB, displaying lower limit values respectively.
13. In manual range measurement mode, when the measured value is less than the set lower limit, the display screen shows L0; when the measured value is greater than the set upper limit, the display screen shows HI; and when the measured value is within the set range, the display screen shows the measured value.
14. The directional characteristics should comply with the requirements of the national standard GB3785 for type II sound level meters.
evaporator
Evaporator is an instrument used to measure the evaporation of water in the atmosphere at a certain time interval. Compact structure, beautiful appearance, sturdy and durable, strong practicality, can be used as teaching equipment for extracurricular environmental monitoring activities in primary and secondary schools.
Technical indicators:
1. A metal circular basin with an inner diameter of 200mm and a height of approximately 100mm for the evaporator.
2. The evaporator is a metal circular structure with smooth inner walls, and the blade edge of the evaporator must not have defects such as burrs or bumps.
3. All parts in contact with water should be smooth, and the welds at their mating or connecting parts should be tight, firm, and free of water leakage.
4. The assembly of all components and parts of the evaporator should be correct, without any looseness, deformation, or other defects that may affect its use.
5. The protective layer applied to each component of the evaporator should be firm, uniform, and smooth, without defects such as delamination or rust.
6. The evaporator and installation frame should be easy to install and able to prevent the evaporator from detaching due to wind force during normal use.
7. Attachment: One graduated measuring cup, one water reservoir, one installation frame, and one metal mesh cover (for bird proof drinking water, users can choose).
Soil testing box
The soil testing box allows primary and secondary school students to step out of the laboratory and directly measure the data required for soil conditions on site. Easy to use and carry.
Testing content
1. Determination of soil acidity and alkalinity.
2. Determination of ammonium nitrogen in soil.
3. Determination of available phosphorus.
Water quality testing box
The water quality testing box allows primary and secondary school students to step out of the laboratory and directly measure the data required for water quality on site. Easy to use and carry.
Testing content
1. Determination of total hardness of water.
2. Determination of Six Prices.
3. Determination of Pb2+.
Digital acidity meter
Digital acidity meters can be used as teaching equipment for extracurricular environmental monitoring activities in primary and secondary schools. This instrument is a small, portable, and low-power product. It can quickly determine the pH of the measuring solution, and the measuring part adopts a new pH sensor to improve the testing accuracy. Displayed on a high brightness LCD screen, the reading is intuitive and clear.
Technical indicators:
1. Measurement range: 0-14.0.
2. Resolution: 0.1.
3. Accuracy: ≤± 0.1.
4. Digital LCD display.
5. It has power shutdown, measurement, and locking functions.
Air quality testing box
The air quality testing box integrates good foreign instruments and combines them into an advanced detection box, allowing primary and secondary school students to step out of the laboratory and directly measure the data required for air quality on site. Easy to use and carry.
Testing content
1. Determination of sulfur dioxide gas
(1) Measurement range: 0-20ppm
(2) Measurement accuracy: ± 10%
2. Determination of nitrogen dioxide gas
(1) Measurement range: 0-20ppm
(2) Measurement accuracy: ± 10%
3. Determination of dust particles in the air (exploratory experiment)
Environmental rapid testing box
The environmental rapid testing box is a combination of middle school natural science and high school geography and chemistry textbooks, as well as experimental books. It can complete rapid monitoring of eight gases in the air, as well as group experiments for soil pH, P, N determination, water quality determination, air quality determination, etc. It includes two parts: classroom rapid detection experiment and experimental analysis experiment.
Technical parameters:
1. Air quality measurement
(1) Determination of dust particles in the air (exploratory experiment)
(2) Determination of sulfur dioxide (SO2) in the air
(3) Determination of nitrogen dioxide (NO2) in the air
2. Water quality determination
(1) Determination of water temperature and pH value
(2) Eutrophication pollution of water (exploratory experiment)
(3) Number of bacteria in water (exploratory experiment)
(4) Determination of ammonium in water
(5) Determination of Phosphates in Water
3. Soil testing
(1) Determination of Soil pH Content
(2) Determination of phosphorus (P) content in soil
(3) Determination of nitrogen (N) content in soil
Dust analyzer
The dust analyzer is a fully automatic dust analyzer with microcomputer control added to the original manual system. The teaching equipment available for extracurricular environmental monitoring activities in primary and secondary schools is an ideal sampling instrument that can monitor the concentration and pollution status of floating dust, smoke, and radioactivity in the atmosphere. This instrument adopts a new microcomputer chip, which is easy to operate, has high timing accuracy, is sturdy and durable, compatible with AC and DC, and convenient and fast time selection. Countdown time of 0-99 hours, freely selected, it is currently one of the most offline and practical filter membrane dust measuring instruments among similar instruments in China.
Application areas:
This instrument is portable and suitable for environmental teaching and real-time indoor monitoring of air pollution detection.
Technical indicators:
1. Inhalation pump: The gas flow rate should not be less than 25 L/min when unloaded.
2. Timer: Set freely between 0 and 99 hours and 59 minutes.
3. Working voltage: AC 220V/50Hz, DC: DC12V.
4. Extraction stability: allowable jumping ± 1 small grid (15L/min)
5. Flow error: ≤± 5%
6. Timing error: ≤± 2min/day
7. Working temperature: -25~45 ℃
8. Relative humidity: ≤ 85%
9. Host size: 220 × 155 × 175 (mm).
System composition:
The host consists of an air pump, flow meter, DC motor, dust sampling head, chassis, and microcomputer timer.
Product features:
This instrument adopts a dual-purpose power supply method of AC and DC, which can be connected to 220V AC mains power or 12V DC power supply. The suction pump adopts a full metal structure with long service life and high suction force.
air sampler
An atmospheric sampler is a commonly used instrument for collecting various harmful gases. It is widely used in atmospheric environment monitoring, health and epidemic prevention, labor protection, scientific research, teaching and other units, and can be used as teaching equipment for extracurricular environmental monitoring activities in primary and secondary schools. It is also suitable for outdoor atmospheric pollution monitoring and workshop mine hygiene investigation. By analyzing the sampled gases, we can understand the degree of environmental damage caused by harmful gases and provide the actual situation of pollution to relevant regulatory authorities for taking countermeasures to ensure a healthy living environment for people.
This instrument adopts microcomputer control technology, with accurate sampling time and high brightness digital display for intuitive and clear observation. For the purpose of portable collection of carbon dioxide and sulfur dioxide samples from the atmosphere. This instrument has a compact structure, stable performance, small size, light weight, and is easy to carry. It is currently an ideal instrument among small portable atmospheric sampling instruments in China. By switching different sampling loads and using different absorption methods, the sampling instrument can be used for multiple purposes.
Technical indicators
1. Vacuum pump: The flow rate should not be less than 2L/min when unloaded. (Full scale value)
2. Sampling flow rate: ≥ 1L/min
3. Timer: Set freely between 0-99 minutes and 59 seconds.
4. Timing error:<5%
5. Working voltage: AC220V/50Hz, DC voltage: DC9V.
6. Extraction stability: allowable jumping ± 1 small grid (1.5L/min).
7. Environmental temperature: -10~40 ℃
8. Relative humidity: 35-85% RH
Carbon dioxide analyzer
The carbon dioxide analyzer can be used as a teaching equipment for extracurricular environmental monitoring activities in primary and secondary schools, and is also suitable for measuring the gas controlled storage and preservation of grains, vegetables, dried and fresh fruits, medicinal materials, tobacco, and other materials. In terms of industry: environmental protection, chemical industry, power station, smelting, boiler, kiln exhaust gas measurement, etc. This instrument is a small, portable, and low-power product. It can quickly determine the percentage content of CO2 in mixed gases, and the measuring part adopts a new type of CO2 dual sensor, which improves the testing accuracy. Display with a high brightness digital tube, the reading is intuitive and clear.
Product features:
1. Small size, light weight, easy to carry
2. Using high brightness digital display, low power consumption, and convenient reading.
Technical parameters:
1. Working power supply: DC 12V AC 220V
2. Environmental temperature: 5-40 ° C
3. Relative humidity: 35-85% RH
4. Weight: 1.4 Kg
5. Power consumption: ≤ 0.7 W.
6. Measurement range: Measurement range 0-99.9%.
7. Response time:<40 seconds (90% of full scale).
8. Display accuracy: ≤± 3.0% ± 1 word between 0-50.0%, and ≤± 5.0% ± 1 word between 50.0-99.9%.
Teaching instrument manufacturer - Ningbo Kaidi Science and Education Instrument Co., Ltd
