Constant-temperature multipath air and particle sampler

Abstract

The invention discloses a constant-temperature multipath air and particle sampler. The constant-temperature multipath air and particle sampler comprises a cutter, a blower box and a main case. The main case is arranged on a frame. The cutter is connected to the blower box. The blower box is arranged on the frame. The constant-temperature multipath air and particle sampler also comprises an air exhaust part, a thermostatic part, a heating part and a particle sampler in the main case. The air exhaust part comprises singlechip control units, sucking pumps, solenoid valves and electronic flowmeters, and the sucking pump, the solenoid valve and the electronic flowmeter are electrically connected to the singlechip control unit. The constant-temperature multipath air and particle sampler can realize continuous switchable sampling and single path or double path simultaneous sampling, can be used in a low temperature area, has simple appearance, complete functions and light weight, is convenient for use and carrying, really realizes unattended operation and saves a lot of resources.

Description

technical field [0001] The invention relates to an air sampling instrument, in particular to a constant-temperature multi-channel air sampler and a particle sampler, and belongs to the technical field of environmental monitoring. Background technique [0002] At present, in the environmental assessment, for SO in the ambient atmosphere 2 The collection of nitrogen oxides, the state stipulates SO 2 The sampling temperature of nitrogen oxides is 23-29 degrees Celsius, and the sampling temperature of nitrogen oxides is 16-24 degrees Celsius. When collecting in the same incubator, the temperature of the incubator should be kept between 23-24 degrees Celsius. Traditional constant temperature samplers are mostly The structure of the host plus a constant temperature box, most of the samplers with this structure can only perform single-channel or double-channel sampling, and the gas circuit connection is cumbersome. For many situations that require intermittent sampling (multiple s...

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Problems solved by technology

[0002] At present, in the environmental evaluation, for SO in the ambient atmosphere 2 The collection of nitrogen oxides, the state stipulates SO 2 The sampling temperature of nitrogen oxides is 23-29 degrees Celsius, and the sampling temperature of nitrogen oxides is 16-24 degrees Celsius. When collecting in the same incubator, the temperature of the incubator should be kept between 23-24 degrees Celsius. Traditional constant temperature samplers are mostly The structure of the host plus a constant temperature box, most of the samplers with this structure can only perform single-channel or double-channel sampling, and the gas circuit connection is cumbersome. For many situations that require intermittent sampling (multiple sampling) of the atmosphere, traditional constant temperature sampling is used. Sampling requires frequent replacement of absorption bottles, and sometimes, a sampler with particulate matter is required, which is time-consuming and laborious, and cannot be used in some low-temperature areas, causing great trouble to use

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