Compressed air online dew point meter

The dew point temperature range of FT60DT compressed air dew point meter is from ambient temperature to -80 ℃ (-112 ℉), and may be lower in some special cases. The compressed air generated by compressor systems without drying function is often saturated compressed air at ambient temperature. Compressed air passes through the heat exchanger of a refrigerated dryer, causing water vapor in the airflow to condense and precipitate. The dew point of the air generated by this system is usually not lower than 5 ℃ (23 ℉). The adsorption drying system absorbs water vapor from the airflow and can produce air with a dew point of -40 ℃ (-40 ℉) or drier as needed.

Dew point meter is an instrument used to measure the dew point of compressed air pressure. Why is it necessary to measure pressure dew point? We have explained it in detail before, so let's quickly review it here. Firstly, water is one of the three main impurities in compressed air as defined by the ISO 8573 standard. The water content in compressed air directly determines the quality level of compressed air. And the pressure dew point is used to indicate the amount of water content in compressed air. In order to understand the quality of compressed air, it is necessary to measure the pressure dew point; Secondly, the pressure dew point is a key parameter for measuring the performance of compressed air drying equipment. In order to understand the working status of the drying equipment, it is necessary to measure the pressure dew point; Thirdly, many production equipment and processes have clear limits on the pressure dew point of compressed air. For example, the pressure dew point of compressed air used for automotive spraying cannot exceed -40 ° C. In order to ensure the safety of production equipment and meet product quality standards, it is necessary to measure the pressure dew point.

Dew point meter is sometimes referred to as a micro water meter. Therefore, this compressed air dew point meter is used to measure the content of gaseous water in compressed air, which is ISO 8573 levels 0 to 6. Compressed air of grades 7, 8, 9, and X contains liquid water that cannot be measured by a dew point meter. What areas or locations are dew point meters generally installed in compressed air systems? According to the reasons for measuring pressure dew point mentioned earlier, there are generally three types. Firstly, the air outlet of the compressed air station is used to monitor the quality of the compressed air at the supply end; Secondly, the outlet of the drying equipment is used to monitor the working status of the equipment; Thirdly, the workshop supervisor or production equipment inlet is used to monitor the quality of compressed air at the demand end, also known as the gas end.

At present, users still have many doubts about the application of pressure dew point in compressed air systems. Therefore, in most cases, users only refer to the dew point meter provided with the dryer itself. However, due to the leakage, there are often differences in the dew point value of the pressure at the outlet of the dryer itself, the outlet of the air compression station, and the workshop. It is difficult to determine how much difference there is, as the severity of the leakage is also a difficult factor to investigate in the compressed air system. In this case, evaluation can only be made through measurement. In addition, currently the proportion of drying machines equipped with dew point meters is not high, with adsorption and membrane drying machines accounting for about 10% to 30% of the total. More than 95% of cold drying machines do not come with dew point meters. In this case, we need to use dew point meters even more to measure.

FT60DT Compressed Air Online Dew Point Meter

The compressed air dew point meter adopts imported dew point sensor and microprocessor technology, with functions such as large screen display, self checking, and self correction; It can directly measure dew point and micro water. The instrument consists of a built-in dew point sampling system, a microcomputer controlled measurement circuit, a large screen display touch screen, a built-in mass flow meter, and a rechargeable lithium battery. It is an integrated structure, and the entire instrument is packed in a suitcase, making it very easy to carry and operate. The detection components of the instrument consist of imported precision dew point sensors and miniature platinum resistors, forming a complete dew point sensing and detection system with temperature compensation function. After calculation and correction by a microprocessor, the dew point sensor is precisely compensated and calibrated, resulting in dew point measurement accuracy better than ± 2.0 ℃ and resolution of 0.1ppm. Suitable for detecting trace water concentrations in gases such as air, nitrogen, hydrogen, argon, etc.

Features:

5-inch touch screen design

Imported sensor, self calibration, long calibration cycle, low maintenance, anti condensation and dew condensation, fast response

Dew point and micro water ppm value display, no need to check the table for calculation

● Automatic storage of measurement data with recorder function

● USB transfer function

● High sensitivity and good stability

● Small and beautiful size, easy to carry

● Built in vacuum pump (optional)

Technical parameters of compressed air dew point meter:

Dew point range: Type A: -60 ℃~+60 ℃ DP

Type B: DP from -80 ℃ to+20 ℃

Type C: DP from -110 ℃ to+20 ℃

Micro water range: 0~30000 PPM

Measurement accuracy: better than ± 2 ℃

Resolution: Dew point 0.1 ℃, micro water 0.1ppm

Communication interface: USB interface

Storage capacity: 4000 sets of data

Record interval: 1S~24H

Working temperature: -20~50 ℃/0~99% RH

Measurement environment: Non corrosive gas (corrosive gas needs to be customized)

Sample gas flow rate: 0~1L/min (recommended 0.5L/min)

Power supply: rechargeable lithium battery, battery status indicator

Charging power supply: AC100~240V (1.8A 50-60Hz)

Lithium battery, AC/DC dual-use, with built-in switching and overcharge/over discharge protection function