The product conforms to HJ 664-2013 environmental air quality monitoring point layout technical specification (Trial), HJ 194-2017 technical specification for manual monitoring of ambient air quality, HJ / t374-2007 technical requirements and detection methods for TSP sampler, HJ / T 375-2007 technical requirements and detection methods for ambient air sampler, hj955-2018 determination of fluoride in ambient air, filter membrane sampling / fluoride ion selective electrode method.
The adjustment range of sampling flow rate is (10 ~ 100) l / min (the fluoride sampling flow rate in national standard can be set as 16.7 L / min and 50 L / min), the error is 2%, the instrument automatically constant current, the adjustment accuracy is 0.1 L / min, and the constant current stability is better than 5%;
When the negative pressure is 20KPa, the flow rate of the instrument is not less than 50L / min;
With power down data saving function, automatically save the parameters, can continue to sample after the call;
The instrument can measure and save the atmospheric pressure, temperature, system load, flow and other parameters, and can automatically count the actual cumulative volume, calculate the accumulated volume under standard conditions and save it;
The instrument can use manual sampling and automatic sampling. Automatic sampling can set the cycle sampling days of a week according to the needs, and the starting time and sampling time of five sampling sections can be set every day; the manual sampling only needs to set the sampling time to immediately sample;
The sampling function can be set with "interval sampling" and "time compensation sampling": in the "interval sampling" function, the sampling can be suspended for a period of time after continuous sampling of the instrument, and the cycle can be continued until the end of sampling; "time compensated sampling" function refers to whether the continuous sampling time needs to be compensated after the instrument is powered down. The function can be turned on or off according to the user's requirements;
The instrument is equipped with flow and load alarm functions, which will give protection prompt when abnormal flow or overload is detected;
The instrument can be equipped with printer to print current or historical sampling data;
The instrument can be equipped with TSP / PM10 / PM2.5 metal cutter to collect particulate fluoride according to users' needs;
The instrument adopts rainproof design and can be used for 24-hour unattended sampling.
Th-150e ambient air fluoride sampler is a necessary instrument for environmental monitoring departments to collect fluoride samples of particulate matter in ambient air. The instrument is mainly used in environmental monitoring, environmental assessment sampling and scientific research experiments, striving to be small and portable; it is suitable for continuous fluoride sampling for 1 hour or 24 hours according to the new monitoring specification - unattended all-weather work. Super brushless pump is the biggest feature of this product.