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Time-sharing multiple-sample constant-temperature constant-current air sampler

An atmospheric sampler and multi-sample technology, applied in sampling devices and other directions, can solve problems such as laborious and time-consuming

Inactive Publication Date: 2010-09-29
青岛恒远检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is time-consuming and labor-intensive to go to the monitoring point 8 times when performing the first-level evaluation with the existing equipment, and most of the time is outside normal working hours.

Method used

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Embodiment Construction

[0014] A time-divided multi-sample constant-temperature and constant-flow air sampler includes a single-chip microcomputer and two gas circuits with the same structure. Such as figure 1 As shown, the single-chip microcomputer 22 is provided with a keyboard 17 and a display 18, and the air inlet 1 of each air circuit is connected in parallel with four absorption bottles 3,5,7,9 through the connecting pipe 2, wherein each absorption bottle 3,5,7, 9 all correspond to a solenoid valve 4, 6, 8, 10 connected in series and are all communicated with the drying bottle 12, and the absorbing bottle is covered with a thermostat 21, and a temperature sensor 20 and a semiconductor thermostat 19 are arranged in the thermostat 21; Sensor 20, semiconductor thermostat 19, solenoid valve 4, 6, 8, 10 and air pump 15 and small flow mass flow sensor 13 are all electrically connected with single-chip microcomputer 22, be provided with between small flow mass flow sensor 13 and air pump 15 Buffer bo...

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Abstract

The invention discloses a time-sharing multiple-sample constant-temperature constant-current air sampler which comprises a single chip computer and two air paths, wherein the single chip computer is provided with a keyboard and a display; each air path comprises an air inlet, absorbing bottles, electromagnetic valves, a flow sensor, an air suction pump and an air vent which are connected sequentially. The air sampler is characterized in that each air inlet is connected with at least two absorbing bottles in parallel by a connecting pipe, wherein each absorbing bottle is connected with an electromagnetic valve in series and is communicated with a drying bottle; the absorbing bottles are arranged in a constant-temperature tank which is internally provided with a temperature sensor and a temperature controller; and the electromagnetic valves, the flow sensors, the temperature sensors, the temperature controllers and the air suction pumps are all electrically connected with the single chip computer. The sampler is connected with a plurality of absorbing bottles in parallel in one air path; the single chip computer is used for controlling the conversion of sampling branch air paths according to set conditions to finish the constant-temperature constant-current collection of multiple samples at time sharing by one air path; and the air sampler has accurate control, and saves labor force.

Description

technical field [0001] The invention relates to an atmospheric sampler, in particular to a multi-sample constant-temperature and constant-flow atmospheric sampler capable of collecting multiple samples at different time intervals using the same gas path, and belongs to the technical field of environmental protection monitoring. Background technique [0002] The existing atmospheric sampler generally can only collect one sample in one air path, and is composed of an absorption bottle, a flow meter, an air pump and a timing device. Used to collect SO 2 , NO X When taking samples, generally two gas channels are set in the instrument, and one SO 2 , a NO X sample. Chinese utility model patent 90204510.5 discloses a 24-hour constant temperature automatic continuous air sampler, which is mainly used for air sample collection by environmental protection departments. Its two sampling bottles are connected to the air inlet of the solenoid valve, and the air outlet of the solenoid...

Claims

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Application Information

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IPC IPC(8): G01N1/24
Inventor 王鹏张明池张国荣禚照宇包汉进刘宗樾
Owner 青岛恒远检测技术有限公司
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