1、 Product Overview

The instrument adopts the solution absorption method to collect various toxic and harmful gases in the environment and indoor environment, and can also be used as a smoke sampler. It can be used for routine or emergency monitoring of gaseous substances by departments such as environmental protection, health, labor, safety supervision, military, scientific research, and education.

The instrument has the advantages of dual constant current sampling function, good stability, and high accuracy. Under the condition of a large load, the actual sampling flow can still be accurately displayed within the flow range required by the specifications.

2、 Execution standards

HJ/T375-2007 "Technical Requirements and Testing Methods for Environmental Air Samplers"

HJ/T 375-2007 "Technical Requirements and Testing Methods for Environmental Air Samplers"

JJG 956-2013 Atmospheric Sampler

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

3、 Performance characteristics

1. AC/DC dual-use, built-in lithium battery, extraordinary power supply time, continuous power supply time of more than 8 hours when fully charged;

2. Dual channel electronic flow meter, with no fluctuation in flow rate, constant current sampling, and either channel can be single * controlled;

3. The high-speed processor automatically calculates and controls the sampling flow rate, compensating for flow changes caused by voltage fluctuations and resistance changes;

4. Equal interval sampling, the sampling frequency can be set arbitrarily between 1 and 99 times;

During the sampling process, the power supply status of the automatic monitoring system is automatically monitored. When the AC power is disconnected or the built-in lithium battery voltage is low, the current sampling status is automatically memorized, and when it is powered on again, the previous sampling is automatically restored;

6. Power saving protection function: When the system is not working in standby mode under battery power, it will automatically shut down one hour after startup, maximizing battery power savings;

7. The air circuit is equipped with anti backflow suction drying bottles to prevent the absorption liquid from being sucked back;

8. Pipeline blockage protection function: During the sampling process, if the pipeline is blocked or the load is too large, the system will automatically stop the pump to protect the instrument from damage due to long-term overload. If the load is greater than negative 20kPa for a long time, the protection function will be automatically activated;

9. Automatically measure ambient atmospheric pressure and temperature, display real-time sampling flow rate, cumulative sampling volume, and standard condition volume;

10. Automatically measure the ambient temperature and start the absorption bottle for constant temperature heating at low temperatures;

11. Built in real-time clock, which can pre-set the sampling start time;

12. Low frequency brushless diaphragm pump, enablingLong service life;

13. Red and blue dual color air path connecting pipe, easy and accurate connection of air path;

14. Chinese LCD display with automatic contrast adjustment, capable of working normally at sub zero temperatures;

15. Equipped with a height adjustable triangular bracket;

16. Equipped with RS232 digital communication interface, it can be connected to an external printer for convenient data output.

4、 Technical parameters

5、 Configuration Description