Intelligent hot plate instrument

Intelligent hot plate instrument/Can only use a hot plate pain tester/hot plate pain relieverH18460

Intelligent hot plate instrumentThe hot plate method is a commonly used method for screening and detecting analgesic drugs, and it is also a method that can determine and distinguish the analgesic mechanisms of central and peripheral nerves. It has a wide range of applications. In the past, due to lax temperature control, inaccurate timing, and errors in personnel operation during use, the specificity of experimental results was often low. Based on the above issuesSolved the problems in the hot plate method.

There are three key aspects in the hot plate method experiment: firstly, the surface of the hot plate should have good thermal conductivity and a certain degree of smoothness, so that the soles of the animal's feet can have sufficient contact area with the hot plate for heat conduction, achieving the purpose of pain. At the same time, there should be physical requirements for acid and alkali resistance, corrosion resistance, and strong hardness. Therefore, we have treated the surface of the hot plate, which has a corrosion resistance higher than stainless steel and a surface smoothness that meets the requirements of the hot plate method experiment. The second is temperature control, which is the core issue of the hot plate instrument. Inaccurate temperature control and excessive fluctuations will inevitably cause huge errors in the latency of animal pain reactions, such as controlling temperature fluctuationsAt 2 ℃, the latency time of animal pain reactions can differ by 5-6 seconds, sometimes directly rendering the experimental results meaningless. Therefore, we used microcomputer dot matrix sampling technology with a sampling interval of 0.25 seconds for temperature control, with precise self-control adjustment amplitude, to control the surface temperature of the hot plate within ± 0.2 ℃, which meets the requirements of pharmacological experiments. The third is timing. The accuracy of timing is crucial for the hot plate instrument to accurately describe the impact of drugs on animal pain thresholds. If timed in seconds, small differences in drug effects are often masked. For example, a difference of nearly 1 second between 5.01 seconds and 5.91 seconds, when displayed in seconds, is only 5 seconds. This difference is significant in pharmacological experiments. The new equipment also adds printing function and wired control functions for foot and hand presses, which can easily complete detection experiments on mice, rats, and guinea pigs. It is an instrument for teaching and scientific research. This instrument is easy to use, with clear indicators, minimal tissue damage, and can be repeatedly used in animals. It has a long latency period for pain response, making it convenient to observe and measure small differences between drugs, compare the strength, speed, and duration of drug analgesic effects, and print out detection data.

2、 Main technical indicators:

1. Heating time from room temperature to 55 ℃: ≤ 10 minutes

2. Temperature display accuracy: 0.1 ℃

3. Temperature control accuracy: 0.1 ℃

4. Time display accuracy: 0.01s

5. Time display range: 0.01 seconds to 99 minutes and 59.99 seconds

6. Temperature sensor: Imported PT100 digital temperature sensor

7. Temperature sensor resolution: 0.0625 ℃

8. Temperature setting range: room temperature~80 ℃

9. Display mode: 5-inch touch screen, all indicators are displayed simultaneously

10. Display content: actual temperature, set temperature, pain threshold time, number of foot lifts, total group time, perpetual calendar, output

wait

11. Data output: with USB interface, data can be stored externally

12. Internal data storage capacity: 500 sets of data

13. Recording method: foot switch, touch switch

14. Working temperature: 0 ℃~45 ℃

15. Relative humidity of air: 15-80% RH

16. Power supply voltage: AC110~220V ± 20V

17. Power frequency 50Hz ± 2Hz

18. Input power: ≤ 300W

19. Host dimensions: 330mm × 280mm × 150mm

20. Weight: 3Kg

21. Reliability: MTBF ≥ 10000

2.Constant current air sampler/Constant current atmospheric sampler/air samplerH18459

I. Overview

A constant current air sampler is an instrument used to collect gaseous or vapor samples from the atmosphere, suitable for sampling individual toxic substances and dust substances such as metals at designated locations for occupational hazards in the workplace; It is also applicable to routine and emergency monitoring of environmental atmosphere and public health.

The constant flow air sampler mainly consists of an operating system, an intelligent control system, an air pump, and a flow measurement system. Fully charged once for continuous operation More than 20 hours, convenient for sampling work. This instrument has real-time flow rate, sampling volume, sampling time, temperature, atmospheric pressure, and electricity display. It has a compact structure, strong load capacity, stable flow rate, and low noise. Can be carried with you for easy use when sampling.

2、 Application Fields

The constant flow air sampler is an instrument used by disease prevention centers, environmental monitoring stations, colleges, research institutions, and environmental protection personnel for short-term or long-term air detection and sampling.

Execution standard:

JJG956-2013 Calibration Regulations for Atmospheric Samplers

GBZ/T300-2017 Sampling Specification for Hazardous Substances in Workplace Air

GB50325-2010 Code for Indoor Environmental Pollution Control of Civil Building Engineering

HJ 194-2017 Technical Specification for Manual Monitoring of Environmental Air Quality

3、 Technical parameters

1. Flow range:

（500ml-5000ml)/min configuration pre separator to collect individual dust (flow rate optional)

2. Constant current method: Electronic constant current (digital constant current; built-in high-precision sensor; instrument can be self calibrated), flow rate is not affected by voltage fluctuations and gas resistance changes

3. Flow error: ≤± 5%

4. Traffic stability: ≤ 5%

5. Traffic repeatability: ≤ 2%

6. Timing error: ≤± 0.1%

7. Timing range: 1min to 99h59min

8. Working temperature: -10~50 ℃

9. Relative humidity: ≤ 95% RH

10. Battery life:>20 hours

11. Load capacity: ≥ 35000pa

12. Timer mode: ① Loop sampling (99 cycles), can cycle volume or time sampling, set sampling time, set pause time,

Number of cycles.

② Manual sampling: After setting the sampling flow rate, you can directly sample, start timing, and manually shut down.

③ Timed sampling, set the sampling time, and stop sampling when the time is up.

④ Fixed volume sampling (1000L), set the sampling volume for sampling.

13. Host size: 122 * 60 * 72mm (length * width * height)

14. Operating noise: ＜ 60db

15. Instrument weight: 0.5kg

16. Power supply: DC7.4V, 220VAC ± 10%;

3.Portable gas detector/Oxygen, combustible gas, VOC/four in one gas detector model:H18458

Portable gas detection alarm is a device that can continuously and quickly monitor the concentration of specific gases in the surrounding environment. Whether it is the sensors or circuit chips used in the instrument, from selection, testing, to finished products, they have undergone strict review processes. The instrument has fast response speed, high measurement accuracy, stability, and good repeatability. The instrument casing is made of engineering plastic material, and the screen is made of2.4-inch dot matrix LCD screen, Chinese display, clear interface, easy to understand, operation interface and misoperation recovery function

Ø Support voice broadcasting of gas concentration exceeding standards, battery undervoltage, and other related content

Powered by a large capacity lithium battery, it can perform long-term continuous operations

Ø Dot matrix LCD display, capable of simultaneously displaying gas types, units, measured values, time, etc

Ø Supports both Chinese and English operation interfaces, with simple and convenient switching

Explosion proof design, explosion-proof grade: Exia II CT4

Ø Made of high-strength ABS engineering plastic, waterproof, anti slip, dustproof, explosion-proof

Ø Aluminum alloy suitcase packaging

Ø USB interface for high-speed data transfer, downloadable printing data (optional)

Ø With data storage function, adjustable storage interval time (optional)

Low maintenance costs

Sampling method: diffusion based

Ø Display size: 2.4-inch dot matrix LCD

Ø Operating language: Supports both Chinese and English (other languages can be customized)

Ø Alarm method: Level 2 sound and light alarm

Ø Working voltage: DC7.4V

Ø Battery capacity: 5000mAh, with charging protection circuit

Working hours: 16 hours or more

Explosion proof grade: Exia II CT4

Ø Protection level: IP65

Operating temperature: -20 ℃~50 ℃

Ø Working humidity: 0~95% RH

Ø Shell material: ABS+PC

Ø Overall dimensions: 149mm * 68mm * 38mm

Ø Weight of the whole machine: 330g

4.Electromagnetic field strength measuring instrumentHandheld field strength meter Portable electromagnetic radiation detector Model:H18457

Product Introduction

H18457The handheld field strength meter (portable electromagnetic radiation detector) is a high-quality electromagnetic field comprehensive measuring instrument that meets the requirements of occupational health and safety supervision and environmental protection monitoring technical specifications, with excellent quality and stable performance.

Scope of application

Instruments are devices used to measure electromagnetic fields. Suitable for measuring various forms of electromagnetic radiation sources with different frequencies and intensities generated by radar systems, television and broadcasting transmission systems, radio frequency induction, medium heating equipment, radio frequency microwave medical equipment, various electrical processing equipment, communication transmission stations, satellite earth communication stations, large power generation stations, transmission and transformation equipment, high-voltage and ultra high voltage transmission lines, subway trains, electric trains, computers, and most household appliances.

Applicable standard

GB8702-2014 Electromagnetic Environment Control Limits of the People's Republic of China;

HJ/T10.2-1996 Electromagnetic Radiation Monitoring Instruments and Methods;

HJ/T10.3-1996 Methods and Standards for Environmental Impact Assessment of Electromagnetic Radiation;

HJ681-2014 Electromagnetic Radiation Monitoring Method for AC Transmission and Transformation Engineering;

HJ972-2018 Monitoring Methods for Electromagnetic Radiation Environment of Mobile Communication Base Stations;

GBZ/T189.1-2007 Workplace Physical Factors Measurement Part 1: Ultra High Frequency Radiation;

GBZ/T189.2-2007 Workplace Physical Factors Measurement Part 2: High Frequency Radiation;

GBZ/T189.3-2018 Workplace Physical Factors Measurement Part 3: 1Hz~100kHz Electric and Magnetic Fields;

GBZ/T189.5-2007 Workplace Physical Factors Measurement Part 5: Microwave Radiation.

Product Features

The instrument is designed and manufactured using electronic technology, sensor technology, and computer technology;

Ø The instrument simultaneously measures the electric and magnetic fields along the three free axes of X, Y, and Z in three-dimensional space;

The instrument measures electric and magnetic fields without affecting each other;

The instrument is equipped with one power frequency probe and one radio frequency probe; Measuring power frequency electromagnetic fields or radio frequency electromagnetic fields, the measuring probe can be freely replaced, and the instrument has automatic recognition and self checking probe sensor functions, automatically displaying corresponding test parameters;

The temperature and humidity of the measurement environment are automatically incorporated into the compensation and correction test results, and the instrument has high measurement accuracy and wide range;

Ø The instrument features a large screen display, a user-friendly and aesthetically pleasing interface with vivid graphics and text, human-machine dialogue, prompt operation, and easy to use;

Ø The measurement parameter unit can be selected by the user, and the dimensional instrument automatically switches;

The measurement results can be displayed in component mode, percentage mode, and eigenvalue mode, and can be freely switched;

The instrument is equipped with clock, battery display, and automatic alarm function for set values;

Powered by lithium batteries, the instrument has a large battery capacity, low power consumption, and long working time;

The instrument has a measurement data storage function and can query historical data at any time;

The instrument has high integration, small size, light weight, and is easy to carry.

5.Intelligent scattered light turbidity meter/Microcomputer turbidity meter/intelligent turbidity meter/desktop turbidity meter Model:H18455

The intelligent turbidity meter adopts the principle of scattered light, and its calibration solution uses the commonly used standard solution of fumarate hydrazine. It is a precision and intelligent instrument that measures turbidity with good linearity, accurate and reliable values, and easy operation.

This instrument is suitable for water treatment plants, reclaimed water treatment plants, swimming pool water reuse, food and beverage industries, etc. It's an instrument from the water laboratory

Measurement principle90 ° scattered light

Minimum indication（NTU） 0.1

Measurement range（NTU） 0～500

indication error±8％(±2.5％F.S)

Correction point0NTU 50NTU 100NTU 200NTU 400NTU 500NTU

heavyRepeatability ≤ 0.8%

zero drift±0.8％F. S

The above parameter information corresponds to the image