Dr-803a water quality automatic sampler (online connected model)

  Application Overview: the automatic water quality sampler is widely used in pollution sources and sewage treatment plants, and is used online with online monitors such as cod, ammonia nitrogen and heavy metals
In addition to the traditional timing, time and flow proportional sampling mode, it also has the functions of synchronous sampling, over standard sample retention and remote control sampling

When the online monitor data is abnormal, the backup sample will be automatically retained for cause analysis and environmental law enforcement, in order to solve the problem of no evidence to check
Remote control sampling can be realized through the remote monitoring platform, which can be used as a remote monitoring and law enforcement terminal
This product is an effective supplement to the on-line monitor, and has been installed in a large number at the total discharge outlet

Functional features:
Conventional sampling: timing, time, flow, liquid level and external control sampling;
Bottle splitting method: parallel sampling, single mining, mixed mining and other bottle splitting methods;
Synchronous sample retention: synchronous sampling and sample retention with online monitor, which is often used for data comparison;
Over standard sample retention: it is used in conjunction with the on-line monitoring instrument
When the monitoring data is abnormal, the water sample is automatically retained in the sampling bottle;
Remote control (optional): it can realize remote status query, parameter setting, record upload, remote control sampling, etc;
Power off protection: power off automatic protection, power on automatic recovery; Record: with sampling record, closing record and power failure record;
External pump control: directly control the external pump to lengthen the sampling distance;
Automatic moistening and washing: before each sampling, moisten and wash the pipeline with the water sample to be tested to retain the representativeness of the sample
Automatic emptying: after each sampling, automatically empty the pipeline and blow back the sampling head;
Digital temperature control: accurate digital temperature control of refrigerator, equipped with soaking system, the temperature is uniform and accurate

Technical indicators:

Sampling bottle	Specification: 1000ml & times; 25 bottles
Single sampling quantity	10ml~1000ml
Sampling interval	(1～9999)min
Sampling record	1000 articles
Door opening and closing record	200 articles
Sampling error	& plusmn; 7%
Proportional sampling error	& plusmn; 8%
System clock time control error	& Delta; 1≤ 0 1%  & Delta; 12≤ 30s
Water sample retention	2℃～6℃（±1 5℃）
Sampling vertical height	& ge; 8m
Horizontal sampling distance	& ge; 80m
Air tightness of pipeline system	& le;- 0 085MPa
Mean time between failures (MTBF)	& ge; 1440 H / time
Insulation impedance	＞ 20 MΩ
communication interface	RS-232/RS-485
Analog interface	4mA～20mA
Digital input interface	Switching value