How to use VOC gas detector for data collection, what are the steps and methods
As is well known, VOC gas detectors are used to continuously measure toxic and harmful organic gases in hazardous or industrial environments, and are particularly suitable for personal safety protection and on-site VOC detection. Therefore, they have very high requirements for data collection. If the data collection is incorrect, it is likely to directly affect the effectiveness of subsequent use. Do you know how VOC gas detectors collect data?
Data collection of VOC gas detector:
1. Data collection mode:
When the VOC gas detector is collecting data, the instrument displays a disk symbol, indicating that data collection is in progress. The instrument saves gas concentration data, user ID, site ID, serial number, last calibration date, alarm limit and other information at the end of each data collection cycle (data collection is enabled). Even if the instrument is turned off, all data is saved in the instrument's memory and will not be lost. Can transfer data to a computer.
The VOC gas detector equipment has three data acquisition modes:
(1) Automatic: default mode. When the instrument starts sampling, it automatically collects detection data.
(2) Manual: Data collection can only be performed after manually enabling the data collection function.
(3) Snapshot: Collect data in snapshot sampling state (activate single event data capture by pressing the mode key).
2. Data collection event:
After data collection is enabled, the detected data is saved. These data are saved in the form of "groups" or "events". Every time the instrument is turned on, or parameters are changed, or data collection is interrupted, a new test time is generated and relevant information is saved. The duration of each event shall not exceed 24 hours, or the amount of data collected shall not exceed 28800 points. If the same event lasts for more than 24 hours, a new event will be automatically generated. The start time of the event, user ID, on-site ID, gas name, serial number, last calibration date, alarm limit and other information will be automatically recorded and saved.
3. Data collection samples:
When recording data collection events, the instrument saves the abbreviated form of the data. When data is transmitted to a computer, it can be presented with sample size, date, gas concentration, and other relevant information through software arrangement.
