Peristaltic pump with 5-8 meters of self-priming capacity,with the function of check valve globe valve,is widely used in water quality sampling instruments and online analysis instruments.The product,also called constant current pump and peristaltic pump,can be accurately measured and sampled to meet the precise collection and delivery of water samples and test reagents by water samplers and on-line analytical instruments.

Sinuo peristaltic pump can provide users with a full range of peristaltic pump products and supporting solutions,which can provide technical support and proposal for customers to quickly realize system development and integration,save customers'development and application cycle and save costs.

Online analytical instrument and water quality sampling instrument as a kind of high automation and unattended monitoring instrument,usually form a complete set of all required components to ensure long-term,stable and reliable operation,can tolerate high temperature and high humidity,organic solvents,such as environmental pollution,so the life of the peristaltic pump and related accessories,organic solvent resistance,high temperature resistance and weather resistance and other indicators have very high requirements.Therefore,the following points should be paid attention to when the peristaltic pump is applied to online analytical instruments and water quality samplers:

1.The material and pump tube of peristaltic pump need to meet the requirements of relevant transportation,and the pump shell uses new solvent resistant materials.

2.The control system of peristaltic pump should be as stable and reliable as possible,usually driven by stepper motor,but attention should be paid to the control of co-shock point to prevent excessive noise.

3.If the sample liquid collected by peristaltic pump has a certain head and a long sampling time,it is necessary to pay attention to the use of pump tubes with thicker walls and lower pump speed,so as to improve the service life of pump tubes and reduce the frequency of maintenance and tube change.

4.In the early stage of system development and life test,it is necessary to fully test,because many peristaltic pumps cannot see problems in the short term.If the peristaltic pump is not solid with materials or has defects in design,its problems will be found after long-term test.

5.The precision of peristaltic pump has a certain relationship with the supporting pump pipe diameter and speed.Usually,the frequency of some pulses will increase with high speed,but the peak value of pulsation will be reduced,and the natural delivery will be more stable.Therefore,if there is a need for conveying smoothness,it is necessary to consider the relationship between the increase of speed and the reduction of pump tube life and balance it.