Development of Automatic Verification/Calibration System for Temperature and Humidity Test Equipment
The calibration of temperature and humidity test equipment is an important measurement and calibration project that has developed rapidly in the past decade. It is a crucial aspect for many thermal or physical and chemical professions. Due to the heavy workload and complex data processing, we began developing the automatic verification/calibration system for temperature and humidity test equipment in 1997. After years of continuous upgrading of hardware and software for automatic verification/calibration of temperature and humidity test equipment, we have gradually accumulated some experience. We are now sharing it with everyone here, hoping to help the development of similar automatic verification systems.
First, the composition of the system
An automatic verification/calibration data acquisition system consists of a temperature sensor, a humidity sensor, a laptop (PDA or smartphone), as shown in Figure 1.
Automatic verification systems can be connected via RS-232 or USB port of a laptop computer, or through wireless Bluetooth (Bluetooth) or other communication methods to connect with a smartphone (or PDA), offering convenience and flexibility. Especially with the popularity of smartphones, it has become increasingly convenient and popular to use smartphones as data display, recording, and processing tools. Data collectors can be stacked together according to user requirements to meet the measurement needs of dozens of channels.
Second, the problems and solutions solved by the software and hardware systems:
1) Visually reflecting the performance of the calibrated device:
To visually reflect the initial performance of the calibrated equipment, we use the real-time curve drawing method, which can intuitively reflect the temperature and humidity fluctuations of the calibrated equipment. According to the degree of dispersion of the curve, the uniformity of the calibrated equipment can be visually reflected. You can use the curve to visually determine whether the equipment is in balance and whether you can start recording data. To distinguish the curves for each channel, we mark them in different colors and change the color of each channel curve at any time. The system has designed up to 20 curves to meet the recording requirements of multi-channel temperature and humidity curves.
2) Correction of sensors and data collectors:
In the automatic detection system, we usually use Class A Pt100 or Pt1000 platinum resistance temperature sensing elements. However, even in class A platinum resistance, there is still an allowed error of ±0.35°C at 100°C. Therefore, it is necessary to correct the sensor and meter in the automatic detection system.
3) The original record and the certificate automatically generated:
The automatic verification system can automatically generate the original records and certificates that meet the laboratory's approval requirements. However, because each unit's certificate format and information content are different, in order to enable each unit to carry out the original records and certificate formats according to their own habits, we adjust the way we use the database. The database will store the original record information corresponding to the position of the Excel table. As long as the location database stored Excel table changes, you can fill in the corresponding information to a new location, allowing users to adjust the original record and certificate format as needed.
4) Problems with accurate measurement of relative humidity:
Temperature measurement techniques are relatively mature, but there are often problems with this or that in the field of relative humidity measurement. In the early days, we used the dry and wet bulb method to measure the relative humidity and obtained the relative humidity value by correcting parameters such as wind speed and air pressure. However, the use of dry and wet ball method has certain limitations, such as not being able to achieve the required wind speed of 2.5 m/s, which restricts measurement accuracy; on-site use requires wet ball gauze, needing to consider water supply and other issues, making it more cumbersome and less efficient; and in environments with low relative humidity, the dry and wet ball method cannot accurately measure. Therefore, after many years of selection, we chose a temperature and humidity sensor imported from abroad (with a relative humidity measurement accuracy of ±1.0%), ensuring the measurement accuracy of the sensor and avoiding A/D conversion errors.
5) The problem of accurate measurement of the temperature of the cold junction of the thermocouple:
In the detection of high-temperature furnaces such as box-type resistance furnaces and industrial annealing furnaces, we choose K-type or S-type thermocouples as sensors. The accuracy of the cold junction temperature measurement when using a thermocouple for detection is critical to the overall measurement accuracy. Therefore, we use four-wire Pt100 as the sensor, with a measurement accuracy better than ±0.05°C. A sealed constant temperature zone is designed at the terminal of the temperature data collector to ensure that the temperature of the cold junction is relatively stable. Because it is a confined space, it is less affected by the ambient temperature. The four-wire platinum resistance measurement can easily lengthen the cold junction temperature sensor, reducing the use of the compensation wire, and the measurement is accurate and reliable.
6) How to connect the sensor conveniently and quickly:
In the temperature field calibration process, connecting the sensor is a more tedious task. After years of choice, we have used two connections: one is a standard connector using European paperless recorder, screwed to the data collector with screws, suitable for on-site inspection of small units; the second method uses a 12-core quick connector, one connector can be connected to three four-wire platinum resistance sensors, which not only improves the efficiency of on-site inspection but also makes it easy to find and replace when there is damage to the sensor.
7) The problem of the on-site sensor is difficult to clean up:
In the temperature field calibration process, another cumbersome work is that the sensor leads are relatively long, and the detection process sometimes resembles a mess and is difficult to clean up. We have custom-made three-color four-core wire for the manufacturer of high-temperature wire, which is used for temperature field detection to prevent it from being scattered during use. These three types of lines are easier to clean because the lines of each sensor are not scattered. In addition, if a 12-pin quick connector is used, it is easier to pack one end of the three sensors on one plug.
8) Other problems solved by the software and hardware system:
The software system uses the database method to store the calibrated equipment in the database over the past year. It does not need to input sample information during the period of detection, which reduces the workload and saves valuable time.
In order to improve the efficiency of on-site inspection, the system can simultaneously depict the curves of multiple schools and can also calibrate two devices at the same time without interfering with each other.
In the process of on-site inspection, it is often encountered that the temperature is not balanced yet to leave the meal. In the software system, we solve it by delay (timed) automatic detection or automatic loop detection, so that we only need to pack the sensor after the meal, which improves the work efficiency.
In order to solve the problem that sometimes there is no power supply in the field detection, we design the charging circuit, which is powered by the rechargeable battery. It can work continuously for more than 24 hours without external power supply, which is convenient for on-site inspection.
Considering that the on-site inspection instrument needs to be light, easy to carry, and not afraid of vibration, we have specially developed a plastic mold for the data acquisition device of this system, and carried out reasonable structural design, which also improves the reliability of the instrument while being convenient to carry.
Third, the application of the system:
The purpose of the automatic verification/calibration system is mainly for constant temperature and humidity chamber (room), high and low temperature test chamber, drying oven, incubator, cement curing box, water bath, refrigerator, cold storage, box resistance furnace, high temperature carbon furnace, etc. Verification or calibration of temperature and relative humidity parameters of isothermal and humidity test equipment. Since the system is actually a multi-channel high-precision temperature and humidity data acquisition and processing system, it can also be applied to the following aspects:
1) The collection, recording, and processing of temperature and humidity data used in research and development of products. Since the system provides the function of exporting temperature and humidity data recorded by all channels to the Excel table, the user can flexibly analyze and process the data.
2) Applied to the GMP certification of the pharmaceutical industry for data recording and processing of the test process.
3) Temperature rise experiments for electrical equipment, circuit boards, transformers, etc., used in the electrical and electronic industry. Calculate the temperature difference between the specified channels, the difference between each channel and the ambient temperature, and draw an intuitive curve to visually reflect the change in temperature difference.
Fourth, the conclusion:
Compared with similar automatic detection systems at home and abroad, the system has the characteristics of small size, light weight, and good stability. Because software and hardware developers have many years of on-site inspection experience, in the process of software and hardware development, the perspective of personnel use is always considered. Therefore, the software system has a friendly interface and meets the characteristics of on-site testing. In the process of system development and improvement, the relevant personnel of the Institute of Metrology, China Institute of Metrology and Quality Measurement, etc., have put forward many valuable opinions. Thank you.
Sarms Liquid
Sarms Liquid is lineup on the market. I'll go through each one in detail and explain how they work.
MK-2866
The MK-2866 is one of the most popular SARMS in the fitness industry today. Its purpose is to prevent muscle atrophy and osteoporosis. Ostalin is popular because it is extremely mild on the body and does not suppress natural testosterone levels.
In a 12-week double-blind study, participants gained an average of 3 pounds of muscle and lost 1 pound of fat. Remember, this is without changing diet or physical activity. Basically, the people who took oxtaline and did nothing else, their physique improved a lot. This is remarkable when you consider that the participants had no significant side effects.
As I said before, oxytaline is very mild and doesn't have any meaningful side effects. Nevertheless, some have reported slight inhibition of testosterone for periods of more than 12 weeks. In my opinion, if you keep it to eight weeks or less, you should be fine.
Mk-2866 dose regimen
Most people find that 20 to 40 milligrams a day is perfect. You can use ostalin in the cut and fill cycle without problem. You can also superimpose this compound on other SARMS to achieve this goal more efficiently. Read more about mK-2866 here.
LGD 4033
Do you want to gain muscle as soon as possible? The LGD 4033 is what you've been waiting for. In one study, men who took LGD 4033 for 21 days increased lean body mass dramatically. Natural testosterone levels also had little inhibitory effect. A daily dose of 1 mg was used in this study.
LGD4033 also showed increased libido, attention and bone density. No side effects such as an enlarged prostate or hair loss have been reported.
It is important to consider that LGD4033 shows no ability to reduce fat. So if you want to gain muscle and lose adipose tissue, I recommend stacking it with MK2866 or GW501516 alkali for best results.
Dosage of LGD 4033
You can see the results of 1 mg per day. Most people like to take about 10 milligrams a day for eight weeks. I have seen clients use this SARM at much higher doses, but the benefits seem to diminish beyond 20 mg per day.
GW501516
GW501516 is one of my favorite compounds on the market right now. It's the only one on this list that actually improves your cardiovascular function. Literally, if you take cardamom, you'll be able to run longer and harder in the gym. Cardamom also has the ability to burn a lot of fat.
The study showed that participants doubled their muscular endurance and lost an average of 6 pounds of body fat in 12 weeks. It's crazy. You can't find a more effective way to reduce
MK-677
Mk-677 is another exciting compound that is rapidly becoming popular. What's special about it is that it dramatically increases your growth hormone levels. As far as I know, this is the only efficient SARM. For decades, bodybuilders have been using HGH to boost their growth hormone levels. However, growth hormone can be injected
There are two main disadvantages:
HGH is very expensive. It usually costs about 2000 dollars a month when you use it a lot and you have to inject HGH multiple times a day. That's why mK-677 is so exciting. First of all, you take it orally, so you don't need an injection. Also, it has a long half-life, which means you only need to inject it -- once a day.
MK677 is a flexible growth hormone because you can take it at the same time. Nutrilbo also promotes deep sleep, which is essential for recovery and muscle growth.
Mk-677 dose regimen
Most people found that 5 mg to 20 mg was the "sweet spot" for mK-677. You don't need to cycle the compound, so you can run it however you want. I have a friend who has been using it for two years straight and his blood tests look great.
RAD1 40
The RAD140, also known as Testolone, is another exciting SARM. It reportedly has an anabolic rate of an incredible 90:1. The testosterone ratio is 100 to 100. This means that Rad-140 is almost anabolic, but has almost none of the androgenic effects of true testosterone. What is this equal to? There is a lot of muscle gain, but no hair loss or conversion to estrogen.
Rad-1 40 dose used
I recommend taking 15-30 mg of test dragon daily. Don't go more than a week or two and make sure you have enough water when you take rad-140. This is one of my favorite SARM, it goes well with MK2866 and L GD4033.
Yk-11: - A real myostatin?
Discovered as recently as 2011, YK-11 quickly gained a reputation as one of the most powerful compounds ever created. To better explain this, you need to understand what YK-11 does and why it's so powerful. Basically, all humans have a hormone called myostatin that inhibits muscle growth. Very few people and animals are born without this hormone, and every one of them has one thing in common: they are completely shattered.
Ever since myostatin was discovered, scientists have been trying to suppress its effects. In theory, if you could suppress the effects of myostatin on the body, you could create an ability to make muscles get crazy amounts beyond what could be achieved through hard work or even Steroids.
Yk-11 may be the world's first true myostatin inhibitor. People who took YK-11 all had the same result: massive muscle growth in a short period of time.
YK - 11 dose
For best results, take 5mg twice daily. Because yK-11 has a short half-life, frequent dosing is required. The S4 is similar to ostalin. It is one of the OG compounds and one of the oldest. The effect is mild and can run safely for a long time. The most powerful effect of Andalin is to promote weight loss. It can also lower body fat slightly.
Dose of S4
Most people find that 50 milligrams a day is enough. Two days off, five days off as required.
SR9009
Last but not least, let's talk about shorthand. When the SARM first hit the market, the study called it "movement in a pill" because of its effect on mitochondria. In a study of mice, those given the speedsolvent ran 50 percent longer than those not treated with the compound. Another finding of the study was that mice given the enzyme lost 60 percent of their fat compared with mice not given the drug. Diet and exercise did not change in the study.
The recommended dose of SR9009
SR9009 has a half-life of 2.5 hours, so you have to take it three to four times a day. Most people like to take a daily dose of 20 to 30mg.
The benefit of SARMS is that side effects are minimal, so you don't have to worry about any negative effects. However, everything has its limits, and some people may experience closure, or even gynecologic mastitis, if you are currently predisposed to it.
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