ONTECH822B Constant current sampler

1. No power, no use of gas pump, the whole sampling process is passive precise control of flow;

2. Silanized inert treatment of  whole equipment, effectively reduce the catalysis and adsorption of VOCs;

3. The flow is adjustable 0.5-300 ccm (ml/min), and the sampling time is 0.5H-168H optional;

4.  Perfect compatible with  different brands, different valve body, different volume of the sampling canister in current market;

5. Super large diaphragm design, to ensure minimal flow fluctuations, so that the final vacuum maintain compliance.

1.  Imported German AB brand stainless steel vacuum pressure composite gauge, canister pressure is clear and easy to read in  the sampling process;

2. 1 / 4 inch stainless steel injection bend pipe, after strict silanized inert treatment, rain prevention and fog prevention;

3.  The length of the inlet bend pipe is optional (10cm or 30cm), and the inlet is equipped with a replaceable pure copper protective cover;

4. Standard particulate matter filter, containing a silanized stainless steel sintered filter that can replace the aperture diameter of 2 µ m- -4 µ m;

5. Standard ruby flow limiting hole, a total of 5 models in different flow range, users can replace by themselves;

6. The lower end interface of the equipment adopts standard British 1 / 4 " Swagelok internal thread, and the lower branch pipe can be replaced.

Current limiting valve / constant current sampler is a flow control device used for sampling  in ecological environment monitoring and fixed pollution source detection. It adopts the principle of hole plate and back pressure assistance to limit the gas flow, and is the most accurate mechanical flow limiting device at present.

 The main body of 316 / 316L uses stainless steel material, the whole silanization and inert treatment can ensure that no residue and pollution during sampling or storage. The equipment contains high precision nozzle, ruby flow limiting hole plate and super large diameter diaphragm structure, which can ensure constant flow throughout the sampling process.