Atmospheric Negative (Oxygen) Ion Monitor

Our company has independently developed a set of high-precision atmospheric anion monitor, which conforms to the international technical specifications, and all technical indicators have reached the international advanced level. The product adopts a unique collecting cylinder capacitor and a pure imported signal processing unit, with high efficiency of ion charge conversion and stable charge collection. It has the characteristics of strong anti-interference ability, rain proof ability, stable communication, high test accuracy, strong adaptability to the environment and long-term uninterrupted work in the field.

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Features

●The measurement method is based on the Japanese JIS measurement method, and meets the data standards specified by the Japan Functional Ion Association's certified material function. It is designed with the most accurate coaxial double-cylinder structure. Compared with the flat plate structure on the market, Significantly improved accuracy.

●Designed for long-term outdoor operation, the sensor collection tube and internal analysis circuit adopt a separate design, which has strong waterproof and moisture-proof characteristics.

●The sensor is equipped with a special separate radiation shield, which is rainproof and sunproof, suitable for long-term monitoring.

●Internal hardware monitoring design, real-time monitoring and collection of internal working voltage, output through RS232 / 485.

●The sensor has an advanced amplification circuit and filtering technology, which can detect the number of negative ions with high sensitivity, stability and accuracy.

●The sensor has excellent electromagnetic shielding function, which can better overcome the adverse influence of static electricity on the measurement.

●Advanced automatic working mode, without manual processing, it will work automatically when power on;

●The use of special material insulation materials, super moisture resistance, to ensure normal work in high humidity environments.

●With a variety of open data interfaces and protocols, it is widely used in various environmental monitoring sites.

●Small size, convenient installation and easy on-site implementation.

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Specifications

▲Measurement method: capacitive suction method

▲Measuring range：:0～5×104/cm3

▲Resolution：10/cm3

▲Measuring ions: negative oxygen

▲Error: negative ≤ ± 15% of reading; ion mobility ≤ ± 15%

▲Sampling frequency: 3 minutes / times (factory default, can be adjusted according to actual conditions)

▲Mobility：0.4（cm2／V•sec）

▲Working mode: stand-alone rotation

▲Communication interface: Standard RS485

▲Working voltage：DC12V

▲Working environment：Temperature：-30～60℃ Humidity：0～100%RH（Non-condensing)

▲Average power consumption：≤3W

▲Body size：195*88*88（mm）

▲Outline size：300*100*103（mm）

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Size

Installation

1.Location selection

●Selection of the installation site may affect the measurement accuracy or data of the equipment.

●The measuring point shall be the area with good air flow, and the place with pollution source such as pollutant, fine particle and aerosol in the air shall be avoided as far as possible.

●It is better to have water sources near the survey site, especially waterfalls, streams, fountains, etc., but keep a certain distance to ensure that the air is not condensed.

●The survey location shall not be the place that is easy to be struck by lightning, such as local commanding point and high-altitude minefield.

●It is better to use vegetation without vegetation or with low bottom under and around the survey site, and too high vegetation may affect the survey.

●There is no interference source near the measurement site. Such as wireless transmission tower, air conditioning outdoor unit, fan metal isolation network, etc.

●The measurement location shall avoid the selection of the air outlet or the place with excessive wind speed, which has certain influence on the measurement accuracy.

●The best measurement time is long time, and the average value is better. Too short a measurement time does not reflect the real data of the measurement location.

●It is recommended to delete the suddenly high data caused by interference during the measurement. Because the interference data can not reflect the real data of the measurement site.

2.Installation steps

（1）Open the box and check whether the accessories are complete. If there is any omission, please contact our company in time.

（2）Connect power line and signal line (refer to Part 6: wiring instructions).

（3）Fixed mounting base.

（4）Securing the mounting base to a pole or bracket.

3.Buttons and displays

The panel indicators are described below：

4.Wiring method

（1）Hardware interface

There are two aviation sockets on both sides of the instrument, which are power supply, data output and two expansion interfaces, power socket pow, data output com, and two expansion interfaces ch1 and CH2. 4-20mA output is 2 pins, RS232 output is 3 pins. The two expansion interfaces are four cores, which can expand other sensors or different signal outputs.

（2）Interface